Zhou L

References (95)

Title : MAGL protects against renal fibrosis through inhibiting tubular cell lipotoxicity - Zhou_2024_Theranostics_14_1583
Author(s) : Zhou S , Ling X , Zhu J , Liang Y , Feng Q , Xie C , Li J , Chen Q , Chen S , Miao J , Zhang M , Li Z , Shen W , Li X , Wu Q , Wang X , Liu R , Wang C , Hou FF , Kong Y , Liu Y , Zhou L
Ref : Theranostics , 14 :1583 , 2024
Abstract : Rationale: Renal fibrosis, with no therapeutic approaches, is a common pathological feature in various chronic kidney diseases (CKD). Tubular cell injury plays a pivotal role in renal fibrosis. Commonly, injured tubular cells exhibit significant lipid accumulation. However, the underlying mechanisms remain poorly understood. Methods: 2-arachidonoylglycerol (2-AG) levels in CKD patients and CKD model specimens were measured using mass spectrometry. 2-AG-loaded nanoparticles were infused into unilateral ureteral obstruction (UUO) mice. Lipid accumulation and renal fibrosis were tested. Furthermore, monoacylglycerol lipase (MAGL), the hydrolyzing enzyme of 2-AG, was assessed in CKD patients and models. Tubular cell-specific MAGL knock-in mice were generated. Moreover, MAGL recombination protein was also administered to unilateral ischemia reperfusion injury (UIRI) mice. Besides, a series of methods including RNA sequencing, metabolomics, primary cell culture, lipid staining, etc. were used. Results: 2-AG was increased in the serum or kidneys from CKD patients and models. Supplement of 2-AG further induced lipid accumulation and fibrogenesis through cannabinoid receptor type 2 (CB2)/beta-catenin signaling. beta-catenin knockout blocked 2-AG/CB2-induced fatty acid beta-oxidation (FAO) deficiency and lipid accumulation. Remarkably, MAGL significantly decreased in CKD, aligning with lipid accumulation and fibrosis. Specific transgene of MAGL in tubular cells significantly preserved FAO, inhibited lipid-mediated toxicity in tubular cells, and finally retarded fibrogenesis. Additionally, supplementation of MAGL in UIRI mice also preserved FAO function, inhibited lipid accumulation, and protected against renal fibrosis. Conclusion: MAGL is a potential diagnostic marker for kidney function decline, and also serves as a new therapeutic target for renal fibrosis through ameliorating lipotoxicity.
ESTHER : Zhou_2024_Theranostics_14_1583
PubMedSearch : Zhou_2024_Theranostics_14_1583
PubMedID: 38389852
Gene_locus related to this paper: human-MGLL , mouse-MGLL

Title : Comparison of Flavonoid Content, Antioxidant Potential, Acetylcholinesterase Inhibition Activity and Volatile Components Based on HS-SPME-GC-MS of Different Parts from Matteuccia struthiopteris (L.) Todaro - Wang_2024_Molecules_29_
Author(s) : Wang QY , Gao Y , Yao JN , Zhou L , Chen HP , Liu JK , Wang X , Guo J , Zang S , Liu B , Wu Y
Ref : Molecules , 29 : , 2024
Abstract : Matteuccia struthiopteris is one of the most globally consumed edible ferns and widely used in folk medicine. Reports mainly focus on young fronds and the rhizome which are common edible medicinal parts. However, there are few detailed reports on other parts. Therefore, the volatile components of different parts based on HS-SPME-GC-MS were identified, and total flavonoid contents, antioxidant activities and acetylcholinesterase inhibitory activities were compared in order to reveal the difference of volatile components and potential medicinal value of different parts. The results showed that total flavonoid contents, antioxidant activities and volatile components of different parts were obviously different. The crozier exhibited the strongest antioxidant activities, but only underground parts exhibited a dose-dependent inhibition potential against AChE. Common volatile compounds were furfural and 2-furancarboxaldehyde, 5-methyl-. In addition, it was found that some volatile components from adventitious root, trophophyll, sporophyll and petiole were important ingredients in food, cosmetics, industrial manufacturing and pharmaceutical applications.
ESTHER : Wang_2024_Molecules_29_
PubMedSearch : Wang_2024_Molecules_29_
PubMedID: 38338359 || 38474653

Title : Metabolic reprogramming based on RNA sequencing of gemcitabine-resistant cells reveals the FASN gene as a therapeutic for bladder cancer - Zhou_2024_J.Transl.Med_22_55
Author(s) : Zhou L , Du K , Dai Y , Zeng Y , Luo Y , Ren M , Pan W , Liu Y , Zhang L , Zhu R , Feng D , Tian F , Gu C
Ref : J Transl Med , 22 :55 , 2024
Abstract : Bladder cancer (BLCA) is the most frequent malignant tumor of the genitourinary system. Postoperative chemotherapy drug perfusion and chemotherapy are important means for the treatment of BLCA. However, once drug resistance occurs, BLCA develops rapidly after recurrence. BLCA cells rely on unique metabolic rewriting to maintain their growth and proliferation. However, the relationship between the metabolic pattern changes and drug resistance in BLCA is unclear. At present, this problem lacks systematic research. In our research, we identified and analyzed resistance- and metabolism-related differentially expressed genes (RM-DEGs) based on RNA sequencing of a gemcitabine-resistant BLCA cell line and metabolic-related genes (MRGs). Then, we established a drug resistance- and metabolism-related model (RM-RM) through regression analysis to predict the overall survival of BLCA. We also confirmed that RM-RM had a significant correlation with tumor metabolism, gene mutations, tumor microenvironment, and adverse drug reactions. Patients with a high drug resistance- and metabolism-related risk score (RM-RS) showed more active lipid synthesis than those with a low RM-RS. Further in vitro and in vivo studies were implemented using Fatty Acid Synthase (FASN), a representative gene, which promotes gemcitabine resistance, and its inhibitor (TVB-3166) that can reverse this resistance effect.
ESTHER : Zhou_2024_J.Transl.Med_22_55
PubMedSearch : Zhou_2024_J.Transl.Med_22_55
PubMedID: 38218866

Title : Rhynchophylline relieves nonalcoholic fatty liver disease by activating lipase and increasing energy metabolism - Liu_2023_Int.Immunopharmacol_117_109948
Author(s) : Liu K , Liu S , Wu C , Wang Y , Zhang Y , Yu J , Li X , Qi X , Su S , Zhou L , Li Y
Ref : Int Immunopharmacol , 117 :109948 , 2023
Abstract : Hepatic fat metabolism may be altered in the context of overnutrition and obesity, often resulting in the accumulation of triglycerides in hepatocytes and leading to nonalcoholic fatty liver disease (NAFLD). Natural plant alkaloids have demonstrated great potential for the prevention and treatment of NAFLD. However, the role of rhynchophylline (RHY) in lipid metabolism is not clear. We explored the role of RHY in lipid metabolism in cells treated with oleic and palmitic acids to mimic high-fat diet (HFD) conditions. RHY attenuated oleic and palmitic acid-induced increases in triglyceride accumulation in HepG2, AML12, and LMH cells. RHY also increased energy metabolism and reduced oxidative stress. We further investigated the effect of RHY on hepatic lipid metabolism in mice fed an HFD including 40 mg/kg RHY. RHY alleviated hepatic steatosis, reduced fat deposition, promoted energy metabolism, and improved glucose metabolism. We investigated the mechanism responsible for this activity by docking with key proteins of lipid metabolism disorders using Discovery Studio software, which showed that RHY interacted well with lipases. Finally, we found that adding RHY promoted lipase activity and lipolysis. In conclusion, RHY ameliorated HFD-induced NAFLD and its complications by increasing lipase activity.
ESTHER : Liu_2023_Int.Immunopharmacol_117_109948
PubMedSearch : Liu_2023_Int.Immunopharmacol_117_109948
PubMedID: 37012893

Title : Ameliorative effect of scopolamine-induced cognitive dysfunction by Fufangmuniziqi formula: The roles of alkaloids, saponins, and flavonoids - Zhao_2023_J.Ethnopharmacol__116792
Author(s) : Zhao X , Hu X , Xie Q , Qi S , Xiang Z , Sun X , Xie Z , Dang R , Zhou L , Liu W , Cheng X , Wang C
Ref : J Ethnopharmacol , :116792 , 2023
Abstract : ETHNOPHARMACOLOGICAL RELEVANCE: Fufangmuniziqi formula (FFMN), a traditional Uyghur medicine used in China, is derived from an ancient Uyghur medical book and consists of 13 herbs. The herbs of FFMN, such as Peganum harmala L., Glycyrrhiza uralensis Fisch., and Nigella glandulifera, have been demonstrated to have acetylcholinesterase (AChE) inhibitory, anti-neuroinflammatory, or antioxidant effects. Therefore, FFMN may have a good anti-Alzheimer's disease (AD) effect, but its specific action and mechanism need to be further proven. AIM OF THE STUDY: This study aims to investigate the anti-AD effects of FFMN and the role played by alkaloids, flavonoids, and saponins in anti-AD. MATERIALS AND METHODS: The alkaloids, flavonoids, and saponins fractions of FFMN were prepared by macroporous resin chromatography. The absorbed ingredients in the drug-containing serum were identified by UPLC-Q-TOF-MS. An AD mouse model was established by intraperitoneal injection of scopolamine (SCO). The role of different fractions of FFMN in the anti-AD process was examined by Morris water maze (MWM), in-vitro cell, and AChE inhibition assay. RESULTS: A total of 20 ingredients were identified in the serum samples collected after oral administration of FFMN, and seven compounds were selected as candidate active compounds. MWM experiments showed that different fractions of FFMN could significantly improve SCO-induced learning memory impairment in mice. The alkaloids fraction (ALK) regulated cholinergic function by inhibiting AChE activity, activating choline acetyltransferase activity, and protein expression. Flavonoids and saponins were more potent than the ALK in downregulating pro-inflammatory factors or inflammatory mediators, such as TNF-alpha, MPO, and nitric oxide. Western blot results further confirmed that flavonoids and saponins attenuated neuroinflammation by inhibiting the phosphorylation of IkappaB and NF-kappaB p65. This result was also verified by in-vitro cellular assays. FFMN enhanced antioxidant defense by increasing the activity of superoxide dismutase and reducing the production of MDA. Combined with cellular experiments, flavonoids and saponins were proven more protective against oxidative damage. CONCLUSION: FFMN improved cognitive and memory impairment in the SCO-induced AD mouse model. ALK mainly enhanced the function of the cholinergic system. Flavonoid and saponin fractions mainly attenuated neuroinflammation and oxidative stress by modulating the NF-kappaB pathway. All these findings strongly suggested that the combination of alkaloid, flavonoid, and saponin fractions derived from FFMN is a promising anti-AD agent that deserves further development.
ESTHER : Zhao_2023_J.Ethnopharmacol__116792
PubMedSearch : Zhao_2023_J.Ethnopharmacol__116792
PubMedID: 37356745

Title : Platinum nanoflowers stabilized with aloe polysaccharides for detection of organophosphorus pesticides in food - Zhao_2023_Int.J.Biol.Macromol__126552
Author(s) : Zhao H , Li R , Zhang T , Zhou L , Wang L , Han Z , Liu S , Zhang J
Ref : Int J Biol Macromol , :126552 , 2023
Abstract : Organophosphorus pesticides can inhibit the activity of acetylcholinesterase and cause neurological diseases. Therefore, it is crucial to establish an efficient and sensitive platform for organophosphorus pesticide detection. In this work, we extracted aloe polysaccharide (AP) from aloe vera with the number average molecular weight of 29,271 Da and investigated its reducing property. We prepared aloe polysaccharide stabilized platinum nanoflowers (AP-Pt(n) NFs), their particle size ranges were 29.4-67.3 nm. Furthermore, AP-Pt(n) NFs exhibited excellent oxidase-like activity and the catalytic kinetics followed the typical Michaelis-Menten equation. They showed strong affinity for 3,3',5,5'-tetramethylbenzidine substrates. More importantly, we developed a simple and effective strategy for the sensitive colorimetric detection of organophosphorus pesticides in food using biocompatible AP-Pt(n) NFs. The detection range was 0.5 microg/L - 140 mg/L, which was wider than many previously reported nanozyme detection systems. This colorimetric biosensor had good selectivity and good promise for bioassay analysis.
ESTHER : Zhao_2023_Int.J.Biol.Macromol__126552
PubMedSearch : Zhao_2023_Int.J.Biol.Macromol__126552
PubMedID: 37660849

Title : A Scd1-mediated metabolic alteration participates in liver responses to low-dose bavachin - Shen_2023_J.Pharm.Anal_13_806
Author(s) : Shen P , Bai ZJ , Zhou L , Wang NN , Ni ZX , Sun DZ , Huang CS , Hu YY , Xiao CR , Zhou W , Zhang BL , Gao Y
Ref : J Pharm Anal , 13 :806 , 2023
Abstract : Hepatotoxicity induced by bioactive constituents in traditional Chinese medicines or herbs, such as bavachin (BV) in Fructus Psoraleae, has a prolonged latency to overt drug-induced liver injury in the clinic. Several studies have described BV-induced liver damage and underlying toxicity mechanisms, but little attention has been paid to the deciphering of organisms or cellular responses to BV at no-observed-adverse-effect level, and the underlying molecular mechanisms and specific indicators are also lacking during the asymptomatic phase, making it much harder for early recognition of hepatotoxicity. Here, we treated mice with BV for 7 days and did not detect any abnormalities in biochemical tests, but found subtle steatosis in BV-treated hepatocytes. We then profiled the gene expression of hepatocytes and non-parenchymal cells at single-cell resolution and discovered three types of hepatocyte subsets in the BV-treated liver. Among these, the hepa3 subtype suffered from a vast alteration in lipid metabolism, which was characterized by enhanced expression of apolipoproteins, carboxylesterases, and stearoyl-CoA desaturase 1 (Scd1). In particular, increased Scd1 promoted monounsaturated fatty acids (MUFAs) synthesis and was considered to be related to BV-induced steatosis and polyunsaturated fatty acids (PUFAs) generation, which participates in the initiation of ferroptosis. Additionally, we demonstrated that multiple intrinsic transcription factors, including Srebf1 and Hnf4a, and extrinsic signals from niche cells may regulate the above-mentioned molecular events in BV-treated hepatocytes. Collectively, our study deciphered the features of hepatocytes in response to BV insult, decoded the underlying molecular mechanisms, and suggested that Scd1 could be a hub molecule for the prediction of hepatotoxicity at an early stage.
ESTHER : Shen_2023_J.Pharm.Anal_13_806
PubMedSearch : Shen_2023_J.Pharm.Anal_13_806
PubMedID: 37577386

Title : Quinolinones Alkaloids with AChE inhibitory Activity from Mangrove Endophytic Fungus Penicillium citrinum YX-002 - Zhang_2023_Chem.Biodivers__e202300735
Author(s) : Zhang Y , Liu Y , Xue X , Zhou L , Yang W , She Z , Liao Q , Feng Y , Chen X
Ref : Chem Biodivers , :e202300735 , 2023
Abstract : Acetylcholinesterase (AChE) inhibitory activity-guided studies on the mangrove-derived endophytic fungus Penicillium citrinum YX-002 led to the isolation of nine secondary metabolites, including one new quinolinone derivative, quinolactone A (1), a pair of epimers quinolactacin C1 (2) and 3-epi-quinolactacin C1 (3), together with six known analogues (4-9) . Their structures were elucidated based on extensive mass spectrometry (MS) and 1D/2D nuclear magnetic resonance (NMR) spectroscopic analyses, and compared with data in the literature. The absolute configurations of compounds 1-3 was determined by combination of electronic circular dichroism (ECD) calculations and X-Ray single crystal diffraction technique using Cu Kalpha radiation. In bioassays, compounds 1, 4 and 7 showed moderate AChE inhibitory activities with IC50 values of 27.6, 19.4 and 11.2 micromol/L, respectively. The structure-activity relationships (SARs) analysis suggested that the existence of carbonyl group on C-3 and the oxygen atom on the five-membered ring were beneficial to the activity. Molecular docking results showed that compound 7 had a lower affinity interaction energy (-9.3 kcal/mol) with stronger interactions with different sites in AChE activities, which explained its higher activities.
ESTHER : Zhang_2023_Chem.Biodivers__e202300735
PubMedSearch : Zhang_2023_Chem.Biodivers__e202300735
PubMedID: 37423890

Title : Clinical and genetic characteristics of CEL-MODY (MODY8): a literature review and screening in Chinese individuals diagnosed with early-onset type 2 diabetes - Sun_2023_Endocrine__
Author(s) : Sun S , Gong S , Li M , Wang X , Wang F , Cai X , Liu W , Luo Y , Zhang S , Zhang R , Zhou L , Zhu Y , Ma Y , Ren Q , Zhang X , Chen J , Chen L , Wu J , Gao L , Zhou X , Li Y , Zhong L , Han X , Ji L
Ref : Endocrine , : , 2023
Abstract : OBJECTIVE: CEL-related maturity-onset diabetes of the young (CEL-MODY, MODY8) is a special type of monogenetic diabetes caused by mutations in the carboxyl-ester lipase (CEL) gene. This study aimed to summarize the genetic and clinical characteristics of CEL-MODY patients and to determine the prevalence of the disease among Chinese patients with early-onset type 2 diabetes (EOD). METHODS: We systematically reviewed the literature associated with CEL-MODY in PubMed, Embase, Web of Science, China National Knowledge Infrastructure and Wanfang Data to analyze the features of patients with CEL-MODY. We screened and evaluated rare variants of the CEL gene in a cohort of 679 Chinese patients with EOD to estimate the prevalence of CEL-MODY in China. RESULTS: In total, 21 individuals reported in previous studies were diagnosed with CEL-MODY based on the combination of diabetes and pancreatic exocrine dysfunction as well as frameshift mutations in exon 11 of the CEL gene. CEL-MODY patients were nonobese and presented with exocrine pancreatic affection (e.g., chronic pancreatitis, low fecal elastase levels, pancreas atrophy and lipomatosis) followed by insulin-dependent diabetes. No carriers of CEL missense mutations were reported with exocrine pancreatic dysfunction. Sequencing of CEL in Chinese EOD patients led to the identification of the variant p.Val736Cysfs*22 in two patients. However, these patients could not be diagnosed with CEL-MODY because there were no signs that the exocrine pancreas was afflicted. CONCLUSION: CEL-MODY is a very rare disease caused by frameshift mutations affecting the proximal VNTR segments of the CEL gene. Signs of exocrine pancreatic dysfunction provide diagnostic clues for CEL-MODY, and genetic testing is vital for proper diagnosis. Further research in larger cohorts is needed to investigate the characteristics and prevalence of CEL-MODY in the Chinese population.
ESTHER : Sun_2023_Endocrine__
PubMedSearch : Sun_2023_Endocrine__
PubMedID: 37726640

Title : A FRET sensor for the real-time detection of long chain acyl-CoAs and synthetic ABHD5 ligands - Mottillo_2023_Cell.Rep.Methods_3_100394
Author(s) : Mottillo EP , Mladenovic-Lucas L , Zhang H , Zhou L , Kelly CV , Ortiz PA , Granneman JG
Ref : Cell Rep Methods , 3 :100394 , 2023
Abstract : Intracellular long-chain acyl-coenzyme As (LC-acyl-CoAs) are thought to be under tight spatial and temporal controls, yet the ability to image LC-acyl-CoAs in live cells is lacking. Here, we developed a fluorescence resonance energy transfer (FRET) sensor for LC-acyl-CoAs based on the allosterically regulated interaction between alpha/beta hydrolase domain-containing 5 (ABHD5) and Perilipin 5. The genetically encoded sensor rapidly detects intracellular LC-acyl-CoAs generated from exogenous and endogenous fatty acids (FAs), as well as synthetic ABHD5 ligands. Stimulation of lipolysis in brown adipocytes elevated intracellular LC-acyl-CoAs in a cyclic fashion, which was eliminated by inhibiting PNPLA2 (ATGL), the major triglyceride lipase. Interestingly, inhibition of LC-acyl-CoA transport into mitochondria elevated intracellular LC-acyl-CoAs and dampened their cycling. Together, these observations reveal an intimate feedback control between LC-acyl-CoA generation from lipolysis and utilization in mitochondria. We anticipate that this sensor will be an important tool to dissect intracellular LC-acyl-CoA dynamics as well to discover novel synthetic ABHD5 ligands.
ESTHER : Mottillo_2023_Cell.Rep.Methods_3_100394
PubMedSearch : Mottillo_2023_Cell.Rep.Methods_3_100394
PubMedID: 36936069
Gene_locus related to this paper: human-ABHD5

Title : The screening for marine fungal strains with high potential in alkaloids production by in situ colony assay and LC-MS\/MS based secondary metabolic profiling - Lu_2023_Front.Microbiol_14_1144328
Author(s) : Lu T , Liu Y , Zhou L , Liao Q , Nie Y , Wang X , Lei X , Hong P , Feng Y , Hu X , Zhang Y
Ref : Front Microbiol , 14 :1144328 , 2023
Abstract : BACKGROUND: Alkaloids are the second primary class of secondary metabolites (SMs) from marine organisms, most of which have antioxidant, antitumor, antibacterial, anti-inflammatory, and other activities. However, the SMs obtained by traditional isolation strategies have drawbacks such as highly reduplication and weak bioactivity. Therefore, it is significantly important to establish an efficient strategy for screening strains and mining novel compounds. METHODS: In this study, we utilized in situ colony assay combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) to identify the strain with high potential in alkaloids production. The strain was identified by genetic marker genes and morphological analysis. The secondary metabolites from the strain were isolated by the combine use of vacuum liquid chromatography (VLC), ODS column chromatography, and Sephadex LH-20. Their structures were elucidated by 1D/2D NMR, HR-ESI-MS, and other spectroscopic technologies. Finally, these compounds bioactivity were assay, including anti-inflammatory and anti-beta aggregation. RESULTS: Eighteen marine fungi were preliminarily screened for alkaloids production by in situ colony assay using Dragendorff reagent as dye, and nine of them turned orange, which indicated abundant alkaloids. By thin-layer chromatography (TLC), LC-MS/MS, and multiple approaches assisted Feature-Based Molecular Networking (FBMN) analysis of fermentation extracts, a strain ACD-5 (Penicillium mallochii with GenBank accession number OM368350) from sea cucumber gut was selected for its diverse alkaloids profiles especially azaphilones. In bioassays, the crude extracts of ACD-5 in Czapek-dox broth and brown rice medium showed moderate antioxidant, acetylcholinesterase inhibitory, anti-neuroinflammatory, and anti-beta aggregation activities. Three chlorinated azaphilone alkaloids, compounds 1-3 (sclerotioramine, isochromophilone VI, and isochromophilone IX, respectively), were isolated from the fermentation products of ACD-5 in brown rice medium guided by bioactivities and mass spectrometry analysis. Compound 1 had shown remarkable anti-neuroinflammatory activity in liposaccharide induced BV-2 cells. CONCLUSION: In summary, in situ colony screening together with LC-MS/MS, multi-approach assisted FBMN can act as an efficient screening method for strains with potential in alkaloids production.
ESTHER : Lu_2023_Front.Microbiol_14_1144328
PubMedSearch : Lu_2023_Front.Microbiol_14_1144328
PubMedID: 37206330

Title : Simple and novel icariin-loaded pro-glycymicelles as a functional food: physicochemical characteristics, in vitro biological activities, and in vivo experimental hyperlipidemia prevention evaluations - Cui_2023_Food.Funct__
Author(s) : Cui Q , Wang C , Zhou L , Wei Y , Liu Z , Wu X
Ref : Food Funct , : , 2023
Abstract : A novel functional food for hyperlipidemia named icariin (ICA) pro-glycymicelles (ICA-PGs) using glycyrrhizin as a phytonanomaterial was easily prepared with improved storage, pH, and salt stabilities. ICA-PGs can easily dissolve in water to self-assemble into a clear glycymicelle solution with high ICA encapsulation efficiency. The ICA in ICA-PGs exhibits significantly increased aqueous solubility, faster in vitro release, and higher bioaccessibility than bare ICA. The ICA-PGs exhibited improved in vitro activities including antioxidant, anti-alpha-glucosidase, anti-lipase, and anti-cholesterol esterase activities. The ICA-PG also demonstrated improved antioxidant activity in cells. In vivo evaluation confirmed that the ICA-PG demonstrated a significant protective effect against experimental hyperlipidemia in mice, exhibiting decreasing levels of triglycerides (TGs), total cholesterol (TC), and low-density lipoprotein-cholesterol (LDL-C) in the serum, and restoring the hepatic morphology to the normal state. These results indicated that the ICA-PG could improve in vitro/in vivo profiles of ICA, providing a new concept and a promising functional food for hyperlipidemia.
ESTHER : Cui_2023_Food.Funct__
PubMedSearch : Cui_2023_Food.Funct__
PubMedID: 37853783

Title : Identification of genes related to glucose metabolism and analysis of the immune characteristics in Alzheimer's disease - Wang_2023_Brain.Res_1819_148545
Author(s) : Wang Y , Shen Z , Wu H , Yu Z , Wu X , Zhou L , Guo F
Ref : Brain Research , 1819 :148545 , 2023
Abstract : OBJECTIVE: Glucose metabolism plays a crucial role in the progression of Alzheimer's disease (AD). The purpose of this study is to identify genes related to glucose metabolism in AD by bioinformatics, construct an early AD prediction model from the perspective of glucose metabolism, and analyze the characteristics of immune cell infiltration. METHODS: AD-related modules and genes were screened by weighted gene co-expression network analysis (WGCNA). The GO and KEEG enrichment analysis were used to explore the potential biological functions of glucose metabolism related genes (GMRGs) in AD. The Least Absolute Shrinkage Selection Operator (LASSO) method was used to construct an early AD prediction model based on GMRGs. Then, the receiver operating characteristic curve (ROC) and nomogram were introduced to evaluate the effectiveness of this model. Finally, CIBERSORT and single-cell analysis were applied for illustrating the immune characteristics in AD patients. RESULTS: A total of 462 differential expressed genes (DEGs) were obtained between Non-Alzheimer's disease (ND,) and AD groups. The genes in the blue module had the highest correlation with AD by WGCNA analysis. We found 18 intersected genes among DEGs, blue model genes and GMRGs according to the Venn diagram. The GO and KEEG enrichment analysis showed that these 18 genes were mainly involved in the production of metabolites and energy, glycolysis, amino acid biosynthesis and so on. The early AD prediction model including ENO2, TPI1, AEBP1, HERC1, PCSK1, PREPL, SLC25A4, UQCRC2, CHST6, DDIT4, ACSS1 and SUCLA2 was constructed by LASSO analysis. The area under the curve (AUC) of this model in brain tissues was 0.942. Then, we draw the nomogram of this model and the C-index was 0.942. The model was further validated in blood samples and the AUC was 0.644. Immune cell infiltration analysis showed that the proportion of plasma cells, T cells follicular helper and activated NK cells in AD group were significantly lower than ND group, while the proportion of M1 macrophages, neutrophils, T cells CD4 naive and gamma-delta T cells was significantly increased when compared with the ND group. Additionally, the specific GMRGs such as ENO2, DDIT4, and SUCLA2 are significantly correlated with certain immune cells such as plasma cells, follicular helper T cells, and M1 macrophages. Single-cell analysis results suggested that the increased macrophages in AD was associated with the up-regulation of AEBP1, DDIT4 and ACSS1. CONCLUSIONS: The diagnosis model based on the twelve GMRGs has strong predictive ability and can be used as early diagnosis biomarkers for AD. In addition, these GMRGs closely associate with AD development by influencing the glucose metabolism of immune cells.
ESTHER : Wang_2023_Brain.Res_1819_148545
PubMedSearch : Wang_2023_Brain.Res_1819_148545
PubMedID: 37619853

Title : Coumarins from Sarcandra glabra (Thunb.) Nakai and Acetylcholinesterase Inhibiting Activity - Du_2022_Chem.Biodivers__
Author(s) : Du NN , Bai M , Zhang X , Zhou L , Huang XX , Song SJ
Ref : Chem Biodivers , : , 2022
Abstract : Nine coumarins including a pair of new enantiomers ( 1a / 1b ) and seven known compounds ( 2-8 ) were isolated from Sarcandra glabra (Thunb.) Nakai. Among them, compounds 1a and 1b were naturally occurring coumarin-phenylpropanoid conjugate enantiomers. Their structures were identified by NMR and ECD calculations. Compounds 1-8 were tested for acetylcholinesterase (AchE) inhibiting activity. The results of the enzymology experiment showed that compound 3 demonstrated obvious AchE inhibitory activity which showed an IC 50 value of 1.982 +/- 0.003 micro M, and the binding sites were predicted by molecular docking.
ESTHER : Du_2022_Chem.Biodivers__
PubMedSearch : Du_2022_Chem.Biodivers__
PubMedID: 36036517

Title : Construction, Pesticidal Activities, Control Effects, and Detoxification Enzyme Activities of Osthole Ester\/Amide Derivatives - Hao_2022_J.Agric.Food.Chem_70_9337
Author(s) : Hao M , Lv M , Zhou L , Li H , Xu J , Xu H
Ref : Journal of Agricultural and Food Chemistry , 70 :9337 , 2022
Abstract : Pesticide research and development has entered an era of safety, efficiency, and environmental friendliness. Discovery of effective active products directly or indirectly from plant secondary metabolites as pesticide candidates has been one of the current research focuses. Herein, two series of new ester and amide derivatives were prepared by structural modifications of a natural coumarin-type product osthole at its C-4' position. Their structures were characterized by IR, mp, (1)H NMR, and HRMS. Confirmation of steric configuration of seven compounds was based on single-crystal analysis. Against Tetranychus cinnabarinus Boisduval (Acari: Tetranychidae), (2'E)-3'-ethoxycarbonylosthole (4b) and (2'E)-3'-(n)hexyloxycarbonylosthole (4e) exhibited 3.2 and 3.1 times acaricidal activity of osthole, and particularly, they also showed 2.4 and 2.2 times control efficiency on the 5th day of osthole. Against Aphis citricola Van der Goot (Homoptera: Aphididae), (2'E)-3'-(p-CF(3))benzyloxycarbonylosthole (4w), (2'E)-3'-benzylaminocarbonylosthole (5f), and (2'E)-3'-phenylethylaminocarbonylosthole (5g) showed 1.9-2.1-fold aphicidal activity of osthole. Furthermore, the changes in two detoxification enzyme [carboxylesterase (CarE) and glutathione S-transferase (GST)] activities over time in treated T. cinnabarinus were investigated. These results can pave the foundation for future design and preparation of osthole derivatives as botanical agrochemicals.
ESTHER : Hao_2022_J.Agric.Food.Chem_70_9337
PubMedSearch : Hao_2022_J.Agric.Food.Chem_70_9337
PubMedID: 35857419

Title : LC-MS\/MS assay of fluoropezil and its two major metabolites in human plasma: an application to pharmacokinetic studies - Guo_2022_Bioanalysis_14_817
Author(s) : Guo R , Hu J , Jing J , Liu Y , Li J , Zhou Y , Liu H , Zhou L , Chen X
Ref : Bioanalysis , 14 :817 , 2022
Abstract : Background: LC-MS/MS methods were developed for pharmacokinetic analysis and verified to measure fluoropezil, a new AchE inhibitor for Alzheimer's disease treatment, and its two primary metabolites (N-debenzyl fluoride fluoropezil [M1] and N-oxidized fluoropezil [M11]) in human plasma. Methods & results: Analytes were extracted from 50 microl plasma using protein precipitation and separated by HPLC using a bridged ethyl hybrid column and gradient elution procedure. Analytical detection was performed with a triple quadrupole mass spectrometer and electrospray ionization source in multiple reaction monitoring mode. The LC-MS/MS method was fully validated. The quantification linear ranges were 0.100-50.0 ng/ml (fluoropezil), 0.0500-25.0 ng/ml (M1) and 0.0500-25.0 ng/ml (M11). Conclusion: A sensitive, reliable LC-MS/MS method was established and used successfully to explore the pharmacokinetics of fluoropezil.
ESTHER : Guo_2022_Bioanalysis_14_817
PubMedSearch : Guo_2022_Bioanalysis_14_817
PubMedID: 35735138

Title : Combined toxicity of chlorpyrifos, abamectin, imidacloprid, and acetamiprid on earthworms (Eisenia fetida) - Teng_2022_Environ.Sci.Pollut.Res.Int__
Author(s) : Teng M , Zhao X , Wang C , Zhou L , Wu X , Wu F
Ref : Environ Sci Pollut Res Int , : , 2022
Abstract : Mixed pesticides have been broadly used in agriculture. However, assessing the combined effects of pesticides in the environment is essential for potential risk assessment, though the task is far from complete. Median lethal concentrations of pesticides as well as acetylcholinesterase (AChE) levels and cellulose activities were measured in earthworms (Eisenia fetida) individually and jointly exposed to pesticides imidacloprid (IMI), acetamiprid (ACE), chlorpyrifos (CRF), and abamectin (ABM)). A 3:1 mixture of CRF and IMI had additive effects, while a 3:1 mixture of CRF and ACE had synergic effects. The joint effects of ABM with IMI or with ACE were synergistic. As CRF concentration increased, AChE activities were significantly decreased. For high concentrations of IMI, AChE activities under combined CRF and IMI applications were significantly inhibited following increased exposure time. Moreover, the cellulase activities under combined applications of CRF with IMI or with ACE had similar effects. This study provides basic data for scientifically evaluating the environmental risk and safety of combined uses of pesticides.
ESTHER : Teng_2022_Environ.Sci.Pollut.Res.Int__
PubMedSearch : Teng_2022_Environ.Sci.Pollut.Res.Int__
PubMedID: 35297002

Title : Marine fungal metabolite butyrolactone I prevents cognitive deficits by relieving inflammation and intestinal microbiota imbalance on aluminum trichloride-injured zebrafish - Nie_2022_J.Neuroinflammation_19_39
Author(s) : Nie Y , Yang J , Zhou L , Yang Z , Liang J , Liu Y , Ma X , Qian Z , Hong P , Kalueff AV , Song C , Zhang Y
Ref : J Neuroinflammation , 19 :39 , 2022
Abstract : BACKGROUND: Mounting evidences indicate that oxidative stress, neuroinflammation, and dysregulation of gut microbiota are related to neurodegenerative disorders (NDs). Butyrolactone I (BTL-I), a marine fungal metabolite, was previously reported as an in vitro neuroprotectant and inflammation inhibitor. However, little is known regarding its in vivo effects, whereas zebrafish (Danio rerio) could be used as a convenient in vivo model of toxicology and central nervous system (CNS) diseases. METHODS: Here, we employed in vivo and in silico methods to investigate the anti-NDs potential of BTL-I. Specifically, we established a cognitive deficit model in zebrafish by intraperitoneal (i.p.) injection of aluminum trichloride (AlCl(3)) (21 microg) and assessed their behaviors in the T-maze test. The proinflammatory cytokines interleukin-1beta (IL-1beta) and tumor necrosis factor-alpha (TNF-alpha) as well as acetylcholinesterase (AChE) activity or glutathione (GSH) levels were assayed 24 h after AlCl(3) injection. The intestinal flora variation of the zebrafish was investigated by 16S rDNA high-throughput analysis. The marine fungal metabolite, butyrolactone I (BTL-I), was used to modulate zebrafish cognitive deficits evoked by AlCl(3) and evaluated about its effects on the above inflammatory, cholinergic, oxidative stress, and gut floral indicators. Furthermore, the absorption, distribution, metabolism, excretion, and toxicity (ADMET) and drug-likeness properties of BTL-I were studied by the in silico tool ADMETlab. RESULTS: BTL-I dose-dependently ameliorated AlCl(3)-induced cognitive deficits in zebrafish. While AlCl(3) treatment elevated the levels of central and peripheral proinflammatory cytokines, increased AChE activity, and lowered GSH in the brains of zebrafish, these effects, except GSH reduction, were reversed by 25-100 mg/kg BTL-I administration. Besides, 16S rDNA high-throughput sequencing of the intestinal flora of zebrafish showed that AlCl(3) decreased Gram-positive bacteria and increased proinflammatory Gram-negative bacteria, while BTL-I contributed to maintaining the predominance of beneficial Gram-positive bacteria. Moreover, the in silico analysis indicated that BTL-I exhibits acceptable drug-likeness and ADMET profiles. CONCLUSIONS: The present findings suggest that BTL-I is a potential therapeutic agent for preventing CNS deficits caused by inflammation, neurotoxicity, and gut flora imbalance.
ESTHER : Nie_2022_J.Neuroinflammation_19_39
PubMedSearch : Nie_2022_J.Neuroinflammation_19_39
PubMedID: 35130930

Title : Human umbilical cord mesenchymal stem cells-derived exosomes for treating traumatic pancreatitis in rats - Han_2022_Stem.Cell.Res.Ther_13_221
Author(s) : Han L , Zhao Z , Chen X , Yang K , Tan Z , Huang Z , Zhou L , Dai R
Ref : Stem Cell Res Ther , 13 :221 , 2022
Abstract : BACKGROUND: The therapeutic and protective effects of human umbilical cord mesenchymal stem cells-exosomes (hucMSC-Exs) on traumatic pancreatitis (TP) remain unknown. Here, we established a rat model of TP and evaluated and compared the therapeutic effects of hUC-MSCs and hucMSC-Exs. METHODS: HucMSC-Exs were obtained by ultracentrifugation and identified using transmission electron microscopy and western blot analysis. TP rats were treated by tail vein injection of hUC-MSCs and hucMSC-Exs. Their homing in rats was observed by performing fluorescence microscopy. The degree of pancreatic tissue damage was assessed by HE staining, the expression levels of amylase, lipase, and inflammatory cytokines were detected by ELISA, apoptosis was detected by TUNEL assay, and the expression levels of various apoptosis-related proteins were detected by western-blot. The expression levels of apoptosis-related molecular markers were detected by RT-qPCR. RESULTS: The colonization of exosomes was observed in pancreatic tissue. Compared to TP group, the histopathological score of pancreas was significantly decreased in the TP + hUC-MSCs group and TP + hucMSC-Exs group (P < 0.05). Compared to TP group, the activity of serum amylase and lipase was significantly decreased (P < 0.05). The expression levels of IL-6 and TNF-alpha were significantly decreased, while those of IL-10 and TGF-beta were significantly increased (P < 0.05). The apoptosis index of the TP group was significantly increased (P < 0.05), whereas that of the TP + hUC-MSCs and TP + hucMSC-Exs groups was significantly decreased (P < 0.05). Compared to TP group, the expression levels of Bax, Bcl-2, and Caspase-3 were significantly decreased in the TP + hUC-MSCs group and TP + hucMSC-Exs group (P < 0.05). CONCLUSION: HucMSC-Exs can colonize injured pancreatic tissue, inhibit the apoptosis of acinar cells, and control the systemic inflammatory response to facilitate the repair of pancreatic tissue.
ESTHER : Han_2022_Stem.Cell.Res.Ther_13_221
PubMedSearch : Han_2022_Stem.Cell.Res.Ther_13_221
PubMedID: 35619158

Title : Structural and functional insights into ABHD5, a ligand-regulated lipase co-activator - Tseng_2022_Sci.Rep_12_2565
Author(s) : Tseng YY , Sanders MA , Zhang H , Zhou L , Chou CY , Granneman JG
Ref : Sci Rep , 12 :2565 , 2022
Abstract : Alpha/beta hydrolase domain-containing protein 5 (ABHD5) is a highly conserved protein that regulates various lipid metabolic pathways via interactions with members of the perilipin (PLIN) and Patatin-like phospholipase domain-containing protein (PNPLA) protein families. Loss of function mutations in ABHD5 result in Chanarin-Dorfman Syndrome (CDS), characterized by ectopic lipid accumulation in numerous cell types and severe ichthyosis. Recent data demonstrates that ABHD5 is the target of synthetic and endogenous ligands that might be therapeutic beneficial for treating metabolic diseases and cancers. However, the structural basis of ABHD5 functional activities, such as protein-protein interactions and ligand binding is presently unknown. To address this gap, we constructed theoretical structural models of ABHD5 by comparative modeling and topological shape analysis to assess the spatial patterns of ABHD5 conformations computed in protein dynamics. We identified functionally important residues on ABHD5 surface for lipolysis activation by PNPLA2, lipid droplet targeting and PLIN-binding. We validated the computational model by examining the effects of mutating key residues in ABHD5 on an array of functional assays. Our integrated computational and experimental findings provide new insights into the structural basis of the diverse functions of ABHD5 as well as pathological mutations that result in CDS.
ESTHER : Tseng_2022_Sci.Rep_12_2565
PubMedSearch : Tseng_2022_Sci.Rep_12_2565
PubMedID: 35173175
Gene_locus related to this paper: human-ABHD5

Title : Ratiometric imaging of butyrylcholinesterase activity in mice with nonalcoholic fatty liver using an AIE-based fluorescent probe - Xiang_2022_J.Mater.Chem.B__
Author(s) : Xiang C , Xiang J , Yang X , Li C , Zhou L , Jiang D , Peng Y , Xu Z , Deng G , Zhu B , Zhang P , Cai L , Gong P
Ref : J Mater Chem B , : , 2022
Abstract : Butyrylcholinesterase (BChE) is an essential human biomarker which is related to liver and neurodegenerative diseases. It is of great significance to develop a fluorescent probe that can image BChE in vitro and in vivo. Unfortunately, most fluorescent probes that are based on a single change in fluorescence intensity are susceptible to environmental interference. Therefore, we reported an easily available ratiometric fluorescent probe, TB-BChE, with aggregation-induced emission (AIE) characteristics for ratiometric imaging of BChE. TB-BChE demonstrated excellent sensitivity (LOD = 39.24 ng mL(-1)) and specificity for BChE. Moreover, we have successfully studied the ratiometric imaging of TB-BChE to BChE in a nonalcoholic fatty liver disease model. These results indicated that TB-BChE is expected to become a powerful analysis tool for butyrylcholinesterase research in basic medicine and clinical applications.
ESTHER : Xiang_2022_J.Mater.Chem.B__
PubMedSearch : Xiang_2022_J.Mater.Chem.B__
PubMedID: 35583194

Title : An easily available endoplasmic reticulum targeting near-infrared fluorescent probe for esterase imaging in vitro and in vivo - Xiang_2022_Analyst__
Author(s) : Xiang C , Xiang J , Yang X , Zhu B , Mo Q , Zhou L , Gong P
Ref : Analyst , : , 2022
Abstract : Here, we report an easily available endoplasmic reticulum-targeting near-infrared fluorescent probe (ER-CE), which can detect esterase in the endoplasmic reticulum and monitor the changes in the esterase amount in tumors in mice in real time. These results indicate that ER-CE is expected to become a powerful analysis tool for the research of endoplasmic reticulum esterase-related diseases.
ESTHER : Xiang_2022_Analyst__
PubMedSearch : Xiang_2022_Analyst__
PubMedID: 35107444

Title : Hesperidin methyl chalcone ameliorates lipid metabolic disorders by activating lipase activity and increasing energy metabolism - Liu_2022_Biochim.Biophys.Acta.Mol.Basis.Dis__166620
Author(s) : Liu S , Liu K , Wang Y , Wu C , Xiao Y , Yu J , Ma Z , Liang H , Li X , Li Y , Zhou L
Ref : Biochimica & Biophysica Acta Mol Basis Dis , :166620 , 2022
Abstract : Obesity has become an increasingly serious health issue with the continuous improvement in living standards. Its prevalence has become an economic burden on health care systems worldwide. Flavonoids have been shown to be beneficial in the prevention and treatment of obesity. Here, we evaluated the therapeutic potential of the flavonoid hesperidin methyl chalcone (HMC) on mice with high-fat diet (HFD)-induced hepatic steatosis in vivo and in vitro. Treatment with HMC reduced oleic and palmitic acid-induced increases in intracellular triglyceride accumulation in HepG2, AML12 and LMH cells. HMC also enhanced energy metabolism and lowered oxidative stress. We used Discovery studio to dock key proteins associated with lipid metabolism disorders to HMC, and found that HMC interacted with lipase. Furthermore, we demonstrated that HMC improved lipase activity and lipolysis. In addition, we found that HMC promoted glucose absorption, alleviated lipid metabolic disorders, improved HFD-induced liver injury, and regulated HFD-induced changes in energy metabolism. In conclusion, our study demonstrated that HMC ameliorated HFD-induced obesity and its complications by promoting lipase activity, and provides a novel approach for the prevention and treatment of obesity and related diseases.
ESTHER : Liu_2022_Biochim.Biophys.Acta.Mol.Basis.Dis__166620
PubMedSearch : Liu_2022_Biochim.Biophys.Acta.Mol.Basis.Dis__166620
PubMedID: 36494040

Title : Analysis of transcript-wide profile regulated by microsatellite instability of colorectal cancer - Xu_2022_Ann.Transl.Med_10_169
Author(s) : Xu Y , Wang X , Chu Y , Li J , Wang W , Hu X , Zhou F , Zhang H , Zhou L , Kuai R , Jin Y , Yang D , Peng H
Ref : Ann Transl Med , 10 :169 , 2022
Abstract : BACKGROUND: Microsatellite instability-high (MSI-H) is a form of genomic instability present in 15% of colorectal cancer (CRC) cases. Several differential gene analyses have been conducted on CRC; however, none have specifically explored the differentially expressed genes in MSI-H CRC. Research on the different gene expressions between MSI-H CRC and microsatellite stable (MSS) CRC, and their different patterns of metastasis will provide invaluable insights for diagnosis, prognosis, and treatment. METHODS: In this study, the differential expression of 46,602 genes were analyzed across 613 different tissue samples from The Cancer Genome Atlas (TCGA)-colon adenocarcinoma (COAD) and TCGA-rectum adenocarcinoma (READ) as part of a gene association analysis. R package TCGAbiolinks (version 2.18.0) was used to download the data set, and DESeq2 (version 1.30.1) was used for the differential gene analysis. The resulting genes were then analyzed for shared pathways with R package clusterProfiler (version 3.0.4). RESULTS: A total of 237 significantly differentially expressed genes (P(adj)<0.05) were found between MSI-H and MSS CRC. Differentially expressed genes include insulin like growth factor 2 (IGF2) and fibroblast growth factor 3 (FGF3), and the enriched pathways mostly involve hearing, digestive regulation, and neurogenesis.463 differentially expressed genes were found between metastatic and non-metastatic CRC. Notably differentially expressed genes in metastatic CRC include DEAD-box helicase 53 (DDX53) and adiponectin, C1Q and collagen domain containing (ADIPOQ), and enriched pathways include the immune system, cell adhesion, and cell signaling. For MSI-H CRC, a total of 34 genes were significantly differently expressed between metastatic and non-metastatic CRC. These include notum, palmitoleoyl-protein carboxylesterase (NOTUM), serpin family B member 2 (SERPINB2), and several keratin (KRT) genes, and the pathway analysis showed the major enrichment of the hormonal and secretion and regulation pathways. Of the differentially expressed genes in metastatic CRC, 25 were immunity related and include fatty acid binding protein 4 (FABP4), and the pathway analysis showed the enrichment of humoral immunity and lymphocyte regulation. CONCLUSIONS: Of the biologically plausible differentially expressed genes, the most notable were NOTUM, KRT6A, KRT14, SERPINB2, and serum amyloid A1 (SAA1). NOTUM, KRT6A, and KRT14 are active in the Wnt pathway. All five are also involved in various inflammation pathways.
ESTHER : Xu_2022_Ann.Transl.Med_10_169
PubMedSearch : Xu_2022_Ann.Transl.Med_10_169
PubMedID: 35280417

Title : Molecular Mechanisms Underlying Metabolic Resistance to Cyflumetofen and Bifenthrin in Tetranychus urticae Koch on Cowpea - Liu_2022_Int.J.Mol.Sci_23_16220
Author(s) : Liu Z , Wu F , Liang W , Zhou L , Huang J
Ref : Int J Mol Sci , 23 :16220 , 2022
Abstract : Tetranychus urticae Koch (T. urticae) is one of the most tremendous herbivores due to its polyphagous characteristics, and is resistant to most acaricides. In this study, enzyme-linked immunosorbent assay (ELISA), transcriptome sequencing (RNA-seq) and quantitative real-time PCR (qRT-PCR) were carried out to analyze the mechanisms of T. urticae metabolic resistance to cyflumetofen and bifenthrin on cowpea. The enzyme activity of UDP-glucuronosyltransferases (UGTs) and carboxylesterases (CarEs) in the cyflumetofen-resistant (R_cfm) strain significantly decreased, while that of cytochrome P450 monooxygenases (P450s) significantly increased. Meanwhile, the activities of glutathione-S-transferases (GSTs), CarEs and P450s in the bifenthrin-resistant (R_bft) strain were significantly higher than those in the susceptible strain (Lab_SS). According to the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) analyses, in the R_cfm mite strain, two carboxyl/cholinesterase (CCE) genes and two P450 genes were upregulated and one gene was downregulated, namely CYP392E7; in the R_bft mite strain, eleven CCE, nine UGT, two P450, four GST and three ABC genes were upregulated, while four CCE and three P450 genes were downregulated. Additionally, 94 differentially expressed genes (DEGs) were common to the two resistant groups. Specifically, TuCCE46 and TuCCE70 were upregulated in both resistant groups. Furthermore, the qRT-PCR validation data were consistent with those from the transcriptome sequencing analysis. Specifically, TuCCE46 (3.37-fold) was significantly upregulated in the R_cfm strain, while in the R_bft strain, TeturUGT22 (5.29-fold), teturUGT58p (1.74-fold), CYP392A11 (2.89-fold) and TuGSTd15 (5.12-fold) were significantly upregulated and TuCCE01 (0.13-fold) and CYP392A2p (0.07-fold) were significantly downregulated. Our study indicates that TuCCE46 might play the most important role in resistance to cyflumetofen, and TuCCE01, teturUGT58p, teturUGT22, CYP392A11, TuGSTd15, TuGSTm09 and TuABCG-13 were prominent in the resistance to bifenthrin. These findings provide further insight into the critical genes involved in the metabolic resistance of T. urticae to cyflumetofen and bifenthrin.
ESTHER : Liu_2022_Int.J.Mol.Sci_23_16220
PubMedSearch : Liu_2022_Int.J.Mol.Sci_23_16220
PubMedID: 36555861

Title : Desorption electrospray ionization (DESI) source coupling ion mobility mass spectrometry for imaging fluoropezil (DC20) distribution in rat brain - Guo_2021_Anal.Bioanal.Chem_413_5835
Author(s) : Guo R , Zhou L , Chen X
Ref : Anal Bioanal Chem , 413 :5835 , 2021
Abstract : Fluoropezil (DC20) is a new selective acetylcholinesterase inhibitor, and it was developed for the treatment of Alzheimer's disease patients. In this study, a desorption electrospray ionization source coupling ion mobility mass spectrometry imaging (DESI/IMS-MSI) method was developed to explore the distribution of DC20 in brain tissue following oral administration. Rat brain coronal slices obtained 1 h and 3 h following drug dosing were used in the study. D6-DC20 was used as internal standard and sprayed by matrix sprayer on the brain slices to calibrate the matrix effect. Ion mobility separation was used to reduce the interference from background noise and the biological matrix. By optimizing DESI-MSI parameters for improved sensitivity, the limit of quantitation of the method was 1.45 pg/mm(2) with a linear range from 1.45 to 72.7 pg/mm(2). DESI-MSI data showed that DC20 could quickly enter and diffuse across whole brain and tended to be much more enriched in striatum than cerebral cortex and hippocampus, which was consistent with quantitative analysis using high-performance liquid chromatography-electrospray tandem mass spectrometry to measure DC20 concentration in each homogenized brain sub-region. The workflow of tissue imaging method optimization and strategy were established, and for the first time, the DESI-MSI technique and optimized method were used to explore the distribution characteristics of DC20 in rat brain, which could help elucidate pharmacological effect mechanisms and improve clinical outcomes.
ESTHER : Guo_2021_Anal.Bioanal.Chem_413_5835
PubMedSearch : Guo_2021_Anal.Bioanal.Chem_413_5835
PubMedID: 34405263

Title : Discovery of novel beta-carboline derivatives as selective AChE inhibitors with GSK-3beta inhibitory property for the treatment of Alzheimer's disease - Liu_2021_Eur.J.Med.Chem_229_114095
Author(s) : Liu W , Liu X , Gao Y , Wu L , Huang Y , Chen H , Li D , Zhou L , Wang N , Xu Z , Jiang X , Zhao Q
Ref : Eur Journal of Medicinal Chemistry , 229 :114095 , 2021
Abstract : The natural product harmine, a representative beta-carboline alkaloid from the seeds of Peganum harmala L. (Zygophyllaceae), possesses a broad spectrum of biological activities. In this study, a novel series of harmine derivatives containing N-benzylpiperidine moiety were identified for the treatment of Alzheimer's disease (AD). The results showed that all the derivatives possessed significant anti-acetylcholinesterase (AChE) activity and good selectivity over butyrylcholinesterase (BChE). In particular, compound ZLWH-23 exhibited potent anti-AChE activity (IC(50) = 0.27 microM) and selective BChE inhibition (IC(50) = 20.82 microM), as well as acceptable glycogen synthase kinase-3 (GSK-3beta) inhibition (IC(50) = 6.78 microM). Molecular docking studies and molecular dynamics simulations indicated that ZLWH-23 could form stable interaction with AChE and GSK-3beta. Gratifyingly, ZLWH-23 exhibited good selectivity for GSK-3beta over multi-kinases and very low cytotoxicity towards SH-SY5Y, HEK-293T, HL-7702, and HepG2 cell lines. Importantly, ZLWH-23 displayed efficient reduction against tau hyperphosphorylation on Ser-396 site in Tau (P301L) 293T cell model. Collectively, harmine-based derivatives could be considered as possible drug leads for the development of AD therapies.
ESTHER : Liu_2021_Eur.J.Med.Chem_229_114095
PubMedSearch : Liu_2021_Eur.J.Med.Chem_229_114095
PubMedID: 34995924

Title : Effect of Chitosan Coatings with Cinnamon Essential Oil on Postharvest Quality of Mangoes - Yu_2021_Foods_10_
Author(s) : Yu K , Xu J , Zhou L , Zou L , Liu W
Ref : Foods , 10 : , 2021
Abstract : Mango (Mangifera indica Linn.) is a famous climacteric fruit containing abundant flavor and nutrients in the tropics, but it is prone to decay without suitable postharvest preservation measures. In this study, the chitosan (CH)-cinnamon essential oil (CEO) Pickering emulsion (CH-PE) coating was prepared, with cellulose nanocrystals as the emulsifier, and applied to harvested mangoes at the green stage of maturity. It was compared with a pure CH coating and a CH-CEO emulsion (CH-E) coating, prepared with the emulsifier Tween 80. Results showed that the CH-PE coating had a lower water solubility and water vapor permeability than the other coatings, which was mainly due to electrostatic interactions, and had a better sustained-release performance for CEO than the CH-E coating. During mango storage, the CH-PE coating effectively improved the appearance of mangoes at 25 degreesC for 12 d by reducing yellowing and dark spots, and delayed water loss. Hardness was maintained and membrane lipid peroxidation was reduced by regulating the activities of pectin methyl esterase, polygalacturonase, and peroxidase. In addition, the nutrient quality was improved by the CH-PE coating, with higher contents of total soluble solid, titratable acid, and ascorbic acid. Therefore, the CH-PE coating is promising to comprehensively maintain the postharvest quality of mangoes, due to its enhanced physical and sustained-release properties.
ESTHER : Yu_2021_Foods_10_
PubMedSearch : Yu_2021_Foods_10_
PubMedID: 34945553

Title : A Neuroligin Isoform Translated by circNlgn Contributes to Cardiac Remodeling - Du_2021_Circ.Res__
Author(s) : Du WW , Xu J , Yang W , Wu N , Li F , Zhou L , Wang S , Li X , He AT , Du KY , Zeng K , Ma J , Lyu J , Zhang C , Zhou C , Maksimovic K , Yang BB
Ref : Circulation Research , : , 2021
Abstract : Rationale: Fibrotic cardiac remodeling is a maladaptive response to acute or chronic injury that leads to arrythmia and progressive heart failure. The underlying mechanisms remain unclear.Objective: We performed high-throughput RNA sequencing to analyze circular RNA (circRNA) profile in human cardiac disease and developed transgenic mice to explore the roles of circNlgn. Methods and Results: Using RNA sequencing, we found that circular neuroligin RNA (circNlgn) was highly upregulated in myocardial tissues of patients with selected congenital heart defects with cardiac overload. Back-splicing of the neuroligin gene led to the translation of a circular RNA-derived peptide (Nlgn173) with a 9-amino-acid nuclear localization motif. Binding of this motif to the structural protein LaminB1 facilitated the nuclear localization of Nlgn173. CHIP analysis demonstrated subsequent binding of Nlgn173 to both ING4 and C8orf44-SGK3 promoters, resulting in aberrant collagen deposition, cardiac fibroblast proliferation, and reduced cardiomyocyte viability. Three-dimensional ultrasound imaging of circNlgn transgenic mice showed impaired left ventricular function, with further impairment when subjected to left ventricular pressure overload compared to wild type mice. Nuclear translocation of Nlgn173, dysregulated expression of ING4 and C8orf44-SGK3, and immunohistochemical markers of cardiac fibrosis were detected in a panel of 145 patient specimens. Phenotypic changes observed in left ventricular pressure overload and transgenic mice were abrogated with silencing of circNlgn or its targets ING4 and SGK3. Conclusions: We show that a circular RNA can be translated into a novel protein isoform. Dysregulation of this process contributes to fibrosis and heart failure in cardiac overload-induced remodeling. This mechanism may hold therapeutic implications for cardiac disease.
ESTHER : Du_2021_Circ.Res__
PubMedSearch : Du_2021_Circ.Res__
PubMedID: 34261347

Title : Melatonin inhibits lipid accumulation to repress prostate cancer progression by mediating the epigenetic modification of CES1 - Zhou_2021_Clin.Transl.Med_11_e449
Author(s) : Zhou L , Zhang C , Yang X , Liu L , Hu J , Hou Y , Tao H , Sugimura H , Chen Z , Wang L , Chen K
Ref : Clin Transl Med , 11 :e449 , 2021
Abstract : BACKGROUND: Androgen deprivation therapy (ADT) is the main clinical treatment for patients with advanced prostate cancer (PCa). However, PCa eventually progresses to castration-resistant prostate cancer (CRPC), largely because of androgen receptor variation and increased intratumoral androgen synthesis. Several studies have reported that one abnormal lipid accumulation is significantly related to the development of PCa. Melatonin (MLT) is a functionally pleiotropic indoleamine molecule and a key regulator of energy metabolism. The aim of our study is finding the links between CRPC and MLT and providing the basis for MLT treatment for CRPC. METHODS: We used animal CRPC models with a circadian rhythm disorder, and PCa cell lines to assess the role of melatonin in PCa. RESULTS: We demonstrated that MLT treatment inhibited tumor growth and reversed enzalutamide resistance in animal CRPC models with a circadian rhythm disorder. A systematic review and meta-analysis demonstrated that MLT is positively associated with an increased risk of developing advanced PCa. Restoration of carboxylesterase 1 (CES1) expression by MLT treatment significantly reduced lipid droplet (LD) accumulation, thereby inducing apoptosis by increasing endoplasmic reticulum stress, reducing de novo intratumoral androgen synthesis, repressing CRPC progression and reversing the resistance to new endocrine therapy. Mechanistic investigations demonstrated that MLT regulates the epigenetic modification of CES1. Ces1-knockout (Ces(-/-) ) mice verified the important role of endogenous Ces1 in PCa. CONCLUSIONS: Our findings provide novel preclinical and clinical information about the role of melatonin in advanced PCa and characterize the importance of enzalutamide combined with MLT administration as a therapy for advanced PCa.
ESTHER : Zhou_2021_Clin.Transl.Med_11_e449
PubMedSearch : Zhou_2021_Clin.Transl.Med_11_e449
PubMedID: 34185414
Gene_locus related to this paper: human-CES1

Title : Two novel Mutations of the LPL Gene in two Chinese family cases with Familial Chylomicronemia Syndrome - Wang_2021_Clin.Chim.Acta__
Author(s) : Wang M , Zhou Y , He X , Deng C , Liu X , Li J , Zhou L , Li Y , Zhang Y , Liu H , Li L
Ref : Clinica Chimica Acta , : , 2021
Abstract : The aim of this study was to investigate the clinical features and genetic causes of two family cases with familial chylomicronemia syndrome (FCS). Clinical manifestations of proband 1 and her families, and also proband 2 showed severe hypertriglyceridemia, especially the triglycerides levels of two probands were extremely high. Gene sequencing results showed that the LPL genes in each of the two probands had a new mutation site. For the proband 1, a compound heterozygous mutation at c.429 (c.429+1G>T) was detected in the LPL gene, which was splicing mutation and inherited from her mother. Homozygous mutation was detected in the LPL gene of proband 2, the nucleotide mutation at c.802 (c.802C > T) exhibited missense mutation, his parents and brother had a heterozygous mutation at the same site. It was confirmed that the conservative lipoprotein lipase superfamily domain changed an amino acid from histidine to tyrosine at p. 268 (p. His268Tyr). Flow cytometry confirmed the deficient expression of LPL protein in two families. These results indicated that the mutation in LPL gene might be the cause of familial chylomicronemia syndrome.
ESTHER : Wang_2021_Clin.Chim.Acta__
PubMedSearch : Wang_2021_Clin.Chim.Acta__
PubMedID: 34324844
Gene_locus related to this paper: human-LPL

Title : Herbal complex 'Buyang Huanwu Tang' improves motor endplate function of denervated-dependent skeletal muscle atrophy in rat - Zhou_2020_J.Integr.Neurosci_19_89
Author(s) : Zhou L , Huang YF , Xie H , Mei XY , Cao J
Ref : J Integr Neurosci , 19 :89 , 2020
Abstract : Denervated-dependent skeletal muscle atrophy is a disease induced by skeletal muscle associated peripheral neuro-disconnection. Its specific molecular mechanisms remain unknown. The treating for denervated-dependent skeletal muscle atrophy is applied with an herbal complex Buyang Huanwu Tang used in traditional Chinese medicine and subjected to the established denervated-dependent skeletal muscle atrophy in rat models, and the therapeutic effects and associated mechanisms were evaluated in the pathogenesis of denervated-dependent skeletal muscle atrophy. Denervated-dependent skeletal muscle atrophy in rats was established and randomly divided into eight groups, including Normal control, Model, Positive control, Model + Buyang Huanwu Tang, Model + astragalus extracts, Model + Buyang Huanwu Tang-astragalus, Buyang Huanwu Tang + LY294002, and astragalus extract + LY294002 group. Hematoxylin-eosin staining and quantitative RT-PCR (qRT-PCR) assay were used to examine the inflammatory response of muscle tissues. Quantitative RT-PCR and Western blotting assay were utilized to analyze mRNA and protein expression. Immunohistochemistry assay was used to detect molecule expression in anterior cervical muscle tissues. Motor endplate activity was examined using the wholemount acetylcholinesterase staining method. The wet mass ratio of anterior cervical muscle was measured. The results indicated that Buyang Huanwu Tang treatment significantly alleviated inflammatory response, enhanced acetylcholinesterase activity, and motor endplate functions, and promoted wet mass of anterior cervical muscle compared to denervated-dependent skeletal muscle atrophy rat models (P < 0.05). Buyang Huanwu Tang regulated molecules of PI3K/PKB/GSK3beta/FOXO1 signaling pathway. Buyang Huanwu Tang significantly reduced muscle atrophy F-box protein, MuFR-1, Bax and caspase 9 expression, significantly enhanced Bcl-2 expression, and remarkably increased element-binding protein and vascular endothelial growth factor levels, compared to Model group (P < 0.05). Buyang Huanwu Tang suppressed caspase 9 and caspase 3 activity and associated apoptosis. Moreover, PI3K specific blocker, LY294002, significantly inhibited the effects of Buyang Huanwu Tang on the above molecule expression (P < 0.05). In conclusion, Buyang Huanwu Tang improved motor endplate functions of denervated-dependent skeletal muscle atrophy rat model through suppressing mitochondria-mediated apoptosis and activating PI3K/PKB/FOXO1 signaling pathway.
ESTHER : Zhou_2020_J.Integr.Neurosci_19_89
PubMedSearch : Zhou_2020_J.Integr.Neurosci_19_89
PubMedID: 32259889

Title : Simple analogues of natural product chelerythrine: Discovery of a novel anticholinesterase 2-phenylisoquinolin-2-ium scaffold with excellent potency against acetylcholinesterase - Zhou_2020_Eur.J.Med.Chem_200_112415
Author(s) : Zhou B , Li H , Cui Z , Li D , Geng H , Gao J , Zhou L
Ref : Eur Journal of Medicinal Chemistry , 200 :112415 , 2020
Abstract : As simple analogues of the natural compound chelerythrine, a novel anti-cholinesterase 2-phenylisoquinolin-2-ium scaffold was designed by structure imitation. The activity evaluation led to the discovery of seven compounds with potent anti-acetylcholinesterase activity with IC50 values of
ESTHER : Zhou_2020_Eur.J.Med.Chem_200_112415
PubMedSearch : Zhou_2020_Eur.J.Med.Chem_200_112415
PubMedID: 32454229

Title : Toxicological and biochemical analyses demonstrate no toxic effect of Bt maize on the Folsomia candida - Jiang_2020_PLoS.One_15_e0232747
Author(s) : Jiang Z , Zhou L , Wang B , Wang D , Wu F , Yin J , Song X
Ref : PLoS ONE , 15 :e0232747 , 2020
Abstract : The potential effects of Bt (Bacillus thuringiensis) maize on non-target organisms must be conducted before the Bt maize is commercially planted. Folsomia candida is one of the non-target organisms of Bt maize, also as an important indicator of soil quality and environmental pollution. In this study, a 90-day F. candida feeding test were conducted to evaluate the potential effects of two Bt maize lines IE09S034 and BT799 and their non-Bt conventional isolines Zong 31 and Zheng 58. The results show that Bt maize lines had no significant effects on the survival rate, reproduction, adult body length, larval body length, and the activities of acetyl cholinesterase, catalase and superoxide dismutase on the F. candida. Namely, Bt maize had no toxic effects on the F. candida.
ESTHER : Jiang_2020_PLoS.One_15_e0232747
PubMedSearch : Jiang_2020_PLoS.One_15_e0232747
PubMedID: 32374765

Title : Effects of lincomycin hydrochloride on the neurotoxicity of zebrafish - Cheng_2020_Ecotoxicol.Environ.Saf_201_110725
Author(s) : Cheng B , Jiang F , Su M , Zhou L , Zhang H , Cao Z , Liao X , Xiong G , Xiao J , Liu F , Lu H
Ref : Ecotoxicology & Environmental Safety , 201 :110725 , 2020
Abstract : Lincomycin hydrochloride is one of the commonly used drugs in clinic. However, it has many side effects on patients, and its mechanism is still poorly understood. In this study, 6 h post-fertilization (6 hpf) zebrafish embryos were exposed to several concentrations of lincomycin hydrochloride (15, 30, 60 mug/mL) for up to 24 or 96 hpf to detect their developmental toxicity and neurotoxicity, and to 6 days post-fertilization (6 dpf) to detect their behavioral toxicity. Our results showed that lincomycin hydrochloride could lead to embryonic head deformities (unclear ventricles, smaller ventricles, fewer new neurons). The studies showed that the frequency of spontaneous tail flick of zebrafish embryo increased at 24 hpf, and the lincomycin hydrochloride exposed zebrafish embryos showed increased heart rate, shorter body length, and yolk sac edema with severe pericardial edema at 96 hpf. The studies also showed that lincomycin hydrochloride increased oxidative stress level, Acetylcholinesterase (AChE) activity, ATPase activity and apoptosis in zebrafish larvae. In addition, the swimming behavior of zebrafish larvae decreased with the increase of lincomycin hydrochloride concentration, but the angular velocity and meandering degree increased, which might be due to the decreased activity of AChE and ATPase, as well as the decreased expression of genes related to neurodevelopment and neurotransmitter system, leading to the change of their motor behaviors. In summary, we found that lincomycin hydrochloride induced developmental toxicity and neurotoxicity in zebrafish larvae, contributing to a more comprehensive evaluation of the safety of the drug.
ESTHER : Cheng_2020_Ecotoxicol.Environ.Saf_201_110725
PubMedSearch : Cheng_2020_Ecotoxicol.Environ.Saf_201_110725
PubMedID: 32474209

Title : Efficacy and safety of DBPR108 monotherapy in patients with type 2 diabetes: a 12-week, randomized, double-blind, placebo-controlled, phase II clinical trial - Wang_2020_Curr.Med.Res.Opin_36_1107
Author(s) : Wang W , Yao J , Guo X , Guo Y , Yan C , Liu K , Zhang Y , Wang X , Li H , Wen Z , Li S , Xiao X , Liu W , Li Z , Zhang L , Shao S , Ye S , Qin G , Li Y , Li F , Zhang X , Li X , Peng Y , Deng H , Xu X , Zhou L , Huang Y , Cao M , Xia X , Shi M , Dou J , Yuan J
Ref : Curr Med Res Opin , 36 :1107 , 2020
Abstract : Objective: DBPR108, a novel dipeptidyl-peptidase-4 inhibitor, has shown great antihyperglycemic effect in animal models. This study was to evaluate the efficacy and safety of DBPR108 monotherapy in type 2 diabetes mellitus (T2DM).Methods: This was a 12-week, double-blind, placebo-controlled phase II clinical trial. The newly diagnosed or inadequately controlled untreated T2DM patients were randomized to receive 50, 100, 200 mg DBPR108 or placebo in a ratio of 1:1:1:1. The primary efficacy outcome was HbA1c change from baseline to week 12. Relevant secondary efficacy parameters and safety were assessed. The clinical trial registration is NCT04124484.Results: Overall, 271 of the 276 randomized patients, who received 50 mg (n = 68), 100 mg (n = 67), 200 mg (n = 69) DBPR108 or placebo (n = 67), were included in full analysis set. At week 12, HbA1c change from baseline was -0.04 +/- 0.77 in placebo group, -0.51 +/- 0.71, -0.75 +/- 0.73, and -0.57 +/- 0.78 (%, p < .001 vs. placebo) in 50, 100, and 200 mg DBPR108 groups, respectively. Since week 4, DBPR108 monotherapy resulted in significant improvements in secondary efficacy parameters. At end of 12-week treatment, the goal of HbA1c >=7% was achieved in 29.85, 58.82, 55.22, and 47.83% of the patients in placebo, 50, 100, and 200 mg DBPR108 groups, respectively. The incidence of adverse events did not show significant difference between DBPR108 and placebo except mild hypoglycemia in DBPR108 200 mg group.Conclusions: The study results support DBPR108 100 mg once daily as the primary dosing regimen for T2DM patients in phase III development program.
ESTHER : Wang_2020_Curr.Med.Res.Opin_36_1107
PubMedSearch : Wang_2020_Curr.Med.Res.Opin_36_1107
PubMedID: 32338063

Title : Dynamic interactions of ABHD5 with PNPLA3 regulate triacylglycerol metabolism in brown adipocytes - Yang_2019_Nat.Metab_1_560
Author(s) : Yang A , Mottillo EP , Mladenovic-Lucas L , Zhou L , Granneman JG
Ref : Nat Metab , 1 :560 , 2019
Abstract : Patatin-Like Phospholipase Domain Containing 2 (PNPLA2)/Adipose Triglyceride Lipase (ATGL) and PNPLA3/Adiponutrin are close paralogs that appear to have opposite functions on triacylglycerol (TAG) mobilization and storage. PNPLA2/ATGL is a major triglyceride lipase in adipose tissue and liver, whereas a common human variant of PNPLA3, I148M, greatly increases risk of hepatosteatosis. Nonetheless, the function of PNPLA3 and the mechanism by which the I148M variant promotes TAG accumulation are poorly understood. Here we demonstrate that PNPLA3 strongly interacts with alpha/beta hydrolase domain-containing 5 (ABHD5/CGI-58), an essential co-activator of PNPLA2/ATGL. Molecular imaging experiments demonstrate that PNPLA3 effectively competes with PNPLA2/ATGL for ABHD5, and that PNPLA3 I148M is more effective in this regard. Inducible overexpression of PNPLA3 I148M greatly suppressed PNPLA2/ATGL-dependent lipolysis and triggered massive TAG accumulation in brown adipocytes, and these effects were dependent on ABHD5. The interaction of PNPLA3 and ABHD5 can be regulated by fatty acid supplementation and synthetic ABHD5 ligands, raising the possibility that this interaction might be targeted for treatment of fatty liver disease.
ESTHER : Yang_2019_Nat.Metab_1_560
PubMedSearch : Yang_2019_Nat.Metab_1_560
PubMedID: 31497752
Gene_locus related to this paper: human-ABHD5

Title : Buyang Huanwu Tang alleviates inflammation and improves motor endplate functions in DSMA rat models by activating several biological molecules and associated signaling pathways - Zhou_2019_Am.J.Transl.Res_11_3056
Author(s) : Zhou L , Huang YF , Xie H , Mei XY , Gao J
Ref : Am J Transl Res , 11 :3056 , 2019
Abstract : Denervated-dependent skeletal muscle atrophy (DSMA) is considered to be the neuro-disconnection of skeletal muscle. This study aimed to investigate the protective effects of Buyang Huanwu Tang (BYHWT) on the DSMA and clarify associated molecular and genetic mechanisms. DSMA rat models were established according to the previously published study and divided into Model group and BYHWT group. Meanwhile, normal rats were assigned as Normal control (NC) group. Hematoxylin and eosin (HE) staining was used to examine inflammatory responses. Motor endplate activity was evaluated with wholemount acetylcholinesterase (AChE) staining. Mass-spectrometry analysis was conducted to compare differentially expressed proteins. RNAs were prepared and applied to gene functional analysis. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) were employed to analyze biological functions. The results indicated that BYHWT remarkably alleviated inflammatory responses and significantly improved motor endplate function, compared to that in DSMA Model rats (P<0.05). In BYHWT group, there were 393 differentially up-regulated and 576 differentially down-regulated molecules compared to that in Model group. Comparing to Model group, the cellular response to interferon-gamma, integral component of plasma membrane and voltage-gated potassium channel activity genes in BYHWT group were the most biological process (BP), cellular component (CC) and molecular function (MF) differential genes, respectively. Fructose/mannose metabolism and glycerolipid metabolism KEGG signaling pathways illustrated the most significant enrichment of differentially expressed genes. In conclusion, BYHWT alleviated the inflammations and improved the motor endplate function of DSMA rats by activating cellular response to interferon-gamma, integral component of plasma membrane and voltage-gated potassium channel activity genes and associated signaling pathways.
ESTHER : Zhou_2019_Am.J.Transl.Res_11_3056
PubMedSearch : Zhou_2019_Am.J.Transl.Res_11_3056
PubMedID: 31217875

Title : Clethodim exposure induced development toxicity and behaviour alteration in early stages of zebrafish life - Wang_2019_Environ.Pollut_255_113218
Author(s) : Wang H , Zhou L , Meng Z , Su M , Zhang S , Huang P , Jiang F , Liao X , Cao Z , Lu H
Ref : Environ Pollut , 255 :113218 , 2019
Abstract : Clethodim is one of the most widely used herbicides in agriculture, however, its potential toxic effects on organisms and the underlying toxicity mechanism are still poorly understood. In this study, zebrafish embryos at 6h post-fertilization (hpf) were exposed to 10mg/L, 20mg/L, and 30mg/L clethodim for up to 24 hpf, and zebrafish larvae at 6 days post-fertilization (dpf) were exposed to the same density gradient for 24h. Our results showed that clethodim could cause head and cardiovascular malformations in embryos: blurred brain ventricles, unapparent brain regions, condensation of nucleus and cytoplasm in brain cells, increased intercellular space, developmental malformations of eyes and ears, reduced neonatal neurons, disorder migration of neural ridge cells; morphological aberrations of the vascular ICM, slowing of heart beat and blood flow, reduction of circulating red blood cells, and delayed development of head and tail blood vessels. These defects could be a result of clethodim-induced oxidative stress and decreased acetylcholinesterase (AChE) activity, which in turn affected the expression of neurodevelopmental genes, decreased ATPase activity, and ultimately led to developmental malformations. The swimming behaviour of zebrafish larvae was observed to decrease with increasing concentration of clethodim exposure, but the angular velocity and mobility increased. These could be due to reduced AChE activity and disturbed gene expression of GABA, dopamine and glutamatergic neurotransmitter systems, which thus altered the locomotor behaviour. In summary, we found that clethodim induces developmental toxicity and neurotoxicity in zebrafish embryos and larvae.
ESTHER : Wang_2019_Environ.Pollut_255_113218
PubMedSearch : Wang_2019_Environ.Pollut_255_113218
PubMedID: 31541821

Title : Laboratory and field evaluation of the aphidicidal activity of moso bamboo (Phyllostachys pubescens) leaf extract and identification of the active components - Gao_2019_Pest.Manag.Sci_75_3167
Author(s) : Gao Q , Shi Y , Liao M , Xiao J , Li X , Zhou L , Liu C , Liu P , Cao H
Ref : Pest Manag Sci , 75 :3167 , 2019
Abstract : BACKGROUND: Botanical pesticides increasingly play important roles in the control of agricultural pests. In this study, the aphidicidal effect of moso bamboo (Phyllostachys pubescens) extract against mustard aphid was confirmed, the main active compounds identified, and aphidicidal mechanism of the most active compound established. RESULTS: When the treatment concentration was 10.0 g L(-1) , the corrected mortality of bamboo leaf extract (BE) was 53.22 +/- 5.20% and the petroleum ether component of bamboo leaf extract (PE) reached 82.76 +/- 4.50%, which also showed a synergistic effect with imidacloprid. Four flavonoids were identified as the main active components in the BE via activity tracking and phytochemical method. Isoorientin had an LC50 of 313.22 mg L(-1) , and affected the activities of acetylcholinesterase and peroxidase significantly, revealing the possible aphidicidal mechanism. When the treatment of 11.1% PE.imidacloprid was 200 mL, the control effect was 99.07%, which was better than that observed with 10% of imidacloprid or 0.5% of matrine. CONCLUSIONS: These data provide a better understanding of the aphidicidal activity and aphidicidal mechanism of moso bamboo leaf extract and the most active compound, isoorientin. This will help in developing a more effective botanical aphicide. (c) 2019 Society of Chemical Industry.
ESTHER : Gao_2019_Pest.Manag.Sci_75_3167
PubMedSearch : Gao_2019_Pest.Manag.Sci_75_3167
PubMedID: 30941856

Title : Hierarchical nanocomposites with an N-doped carbon shell and bimetal core: Novel enzyme nanocarriers for electrochemical pesticide detection - Ma_2018_Biosens.Bioelectron_121_166
Author(s) : Ma L , Zhou L , He Y , Wang L , Huang Z , Jiang Y , Gao J
Ref : Biosensors & Bioelectronics , 121 :166 , 2018
Abstract : Core-shell structured nanocomposites (named PtPd@NCS) with N-doped carbon shell and bimetal core (Pt and Pd) were fabricated through a facile strategy for the first time. The PtPd@NCS nanocomposites were obtained through reduction of K2PtCl4, H2PtCl6 and Na2PdCl4 species, self-polymerization of dopamine (DA) and co-assembly of Pluronic F127 using a one-pot approach. DA serves as a reductant, as well as a carbon and nitrogen source. The core-shell structure of the PtPd@NCS nanocomposites was characterized and the result indicated that Pt-Pd nanoparticle core with a diameter of approximately 15nm was encased in the N-doped carbon shells with a thickness of approximately 35nm. The PtPd@NCS nanocomposites were used as an electrode material to prepare acetylcholinesterase (AChE) biosensors for detecting organophosphate pesticides. The obtained AChE biosensor exhibited a linear range of 1x10(-14) to 1x10(-10) M and 1x10(-9) to 1x10(-5) M within the detection limit of 7.9x10(-15) M for malathion, 1x10(-13) to 1x10(-6) within the detection limit of 7.1x10(-14) M for chlopyrifos, and 1x10(-14) to 1x10(-11) M and 1x10(-10) to 1x10(-5) M within the detection limit of 8.6x10(-15) M for parathion methyl. The proposed biosensor also exhibited high selectivity, reproducibility and stability. The AChE biosensor was also applied in real samples for detecting organophosphate pesticides and exhibited acceptable recovery. This work demonstrated that the PtPd@NCS had great potential in constructing biosensors to detect organophosphate pesticides and other analytes.
ESTHER : Ma_2018_Biosens.Bioelectron_121_166
PubMedSearch : Ma_2018_Biosens.Bioelectron_121_166
PubMedID: 30218924

Title : A Verticillium dahliae Extracellular Cutinase Modulates Plant Immune Responses - Gui_2018_Mol.Plant.Microbe.Interact_31_260
Author(s) : Gui YJ , Zhang WQ , Zhang DD , Zhou L , Short DPG , Wang J , Ma XF , Li TG , Kong ZQ , Wang BL , Wang D , Li NY , Subbarao KV , Chen JY , Dai XF
Ref : Mol Plant Microbe Interact , 31 :260 , 2018
Abstract : Cutinases have been implicated as important enzymes during the process of fungal infection of aerial plant organs. The function of cutinases in the disease cycle of fungal pathogens that invade plants through the roots has been less studied. Here, functional analysis of 13 cutinase (carbohydrate esterase family 5 domain-containing) genes (VdCUTs) in the highly virulent vascular wilt pathogen Verticillium dahliae Vd991 was performed. Significant sequence divergence in cutinase family members was observed in the genome of V. dahliae Vd991. Functional analyses demonstrated that only VdCUT11, as purified protein, induced cell death and triggered defense responses in Nicotiana benthamiana, cotton, and tomato plants. Virus-induced gene silencing showed that VdCUT11 induces plant defense responses in Nicotiana benthamania in a BAK1 and SOBIR-dependent manner. Furthermore, coinfiltration assays revealed that the carbohydrate-binding module family 1 protein (VdCBM1) suppressed VdCUT11-induced cell death and other defense responses in N. benthamiana. Targeted deletion of VdCUT11 in V. dahliae significantly compromised virulence on cotton plants. The cutinase VdCUT11 is an important secreted enzyme and virulence factor that elicits plant defense responses in the absence of VdCBM1.
ESTHER : Gui_2018_Mol.Plant.Microbe.Interact_31_260
PubMedSearch : Gui_2018_Mol.Plant.Microbe.Interact_31_260
PubMedID: 29068240

Title : Benzo(a)pyrene inhibits the accumulation and toxicity of cadmium in subcellular fractions of Eisenia fetida - Zhang_2018_Chemosphere_219_740
Author(s) : Zhang L , Zhou L , Han L , Zhao C , Norton JM , Li H , Hu F , Xu L
Ref : Chemosphere , 219 :740 , 2018
Abstract : Cadmium (Cd) and benzo [a]pyrene (BaP) often co-occur in the environment, and the critical body residue of organisms is used as an indicator of the toxic effects of contaminants. However, little is known about their distributions and toxicities when pollution of Cd and BaP are combined. Semi-static solution culture experiment was used to study the impacts of BaP on the subcellular distribution of the toxic metal Cd in the earthworm Eisenia fetida. We explored the mechanisms by which this organism responds to combined exposure to these pollutants by measuring the protein content of each of three subcellular fractions, as well as acetylcholinesterase (AChE) and glutathione S-transferase (GST) activities. The subcellular partitioning of Cd was heterogeneous and Cd mainly accumulated in the cytosolic fraction (Fraction C), which was previously reported to be involved in metal immobilization. In Fraction C, Cd accumulation was correlated with the external concentration to which the earthworm had been exposed; however, in the presence of BaP, Cd accumulation was inhibited and plateaued at high external Cd concentrations. A principal component analysis revealed that this decreased Cd accumulation might be caused by increases in GST activity, which likely increased the excretion of Cd. BaP was also found to stimulate protein biosynthesis and upregulate AChE and GST activities in the debris fraction (Fraction E), indicating other potential detoxification mechanisms in this fraction. Granule fraction (Fraction D) had a lower protein content, AChE and GST activities than the other subcellular fractions, supporting previous findings that Fraction D is largely inert.
ESTHER : Zhang_2018_Chemosphere_219_740
PubMedSearch : Zhang_2018_Chemosphere_219_740
PubMedID: 30557731

Title : New 2-Aryl-9-methyl-beta-carbolinium salts as Potential Acetylcholinesterase Inhibitor agents: Synthesis, Bioactivity and Structure-Activity Relationship - Zhou_2018_Sci.Rep_8_1559
Author(s) : Zhou B , Zhang B , Li X , Liu X , Li H , Li D , Cui Z , Geng H , Zhou L
Ref : Sci Rep , 8 :1559 , 2018
Abstract : A series of 2-aryl-9-methyl-beta-carbolinium bromides (B) were synthesized and explored for anti-acetylcholinesterase (AChE) activities in vitro, action mechanism and structure-activity relationship. All the compounds B along with their respective 3,4-dihydro intermediates (A) presented anti-AChE activity at 10 muM. Thirteen compounds B showed the excellent activity with IC50 values of 0.11-0.76 muM and high selectivity toward AChE relative to butyrylcholinesterase (BChE), superior to galantamine (IC50 = 0.79 muM), a selective AChE inhibitor drug. Kinetic analysis showed that the action mechanisms of both compounds B and A are a competitive inhibition model. Structure-activity relationship analyses showed that the C = N(+) moiety is a determinant for the activity. Substituents at 6, 7 or 4' site, the indole-N-alkyl and the aromatization of the C-ring can significantly improve the activity. Molecular docking studies showed that the compounds could combine with the active site of AChE by the pi-pi or cation-pi action between the carboline ring and the phenyl rings of the residues, and the beta-carboline moiety is embedded in a cavity surrounded by four aromatic residues of Trp86, Tyr337, Trp439 and Tyr449. The present results strongly suggest that the para-position of the D-ring should be a preferred modification site for further structural optimization design. Thus, 2-aryl-9-methyl-beta-carboliniums emerged as novel and promising tool compounds for the development of new AChE inhibitor agents.
ESTHER : Zhou_2018_Sci.Rep_8_1559
PubMedSearch : Zhou_2018_Sci.Rep_8_1559
PubMedID: 29367595

Title : Rare Hybrid Dimers with Anti-Acetylcholinesterase Activities from a Safflower (Carthamus tinctorius L.) Seed Oil Cake - Peng_2017_J.Agric.Food.Chem_65_9453
Author(s) : Peng XR , Wang X , Dong JR , Qin XJ , Li ZR , Yang H , Zhou L , Qiu MH
Ref : Journal of Agricultural and Food Chemistry , 65 :9453 , 2017
Abstract : Safflower (Carthamus tinctorius) is commercially cultivated for vegetable oil extracted from the seeds. However, during the production process of seed oil, a large amount of the oil cake is thrown away or fermented as fertilizer to improve the homing rate of pigeons. Therefore, to solve the ecological problem and develop its new function, we investigated the chemical constituents of a safflower seed oil cake, and six new hybrid dimers, (+/-)-carthatins A-F (1-6, respectively), with a phenylpropanoid and a feruloylserotonin fused via a dihydrofuran ring, together with four known compounds, including sinapyl alcohol (7), coniferyl alcohol (8), serotobenine (9), and feruloylserotonin (10), were isolated. The extensive nuclear magnetic resonance spectra, combined with electronic circular dichroism analysis and chiral high-performance liquid chromatography, allowed the complete structural assignments of (+/-)-carthatins A-F. Moreover, we evaluated their anti-acetylcholinesterase activities. Racemic carthatins A and B (1 and 2, respectively) showed anti-acetylcholinesterase effects with IC50 values of 17.96 and 66.83 muM, respectively. To some extent, our findings provide a new scaffold of acetylcholinesterase inhibitors, which could be beneficial for developing therapeutic molecules for the treatment of Alzheimer's disease and supporting folk application of a safflower seed oil cake.
ESTHER : Peng_2017_J.Agric.Food.Chem_65_9453
PubMedSearch : Peng_2017_J.Agric.Food.Chem_65_9453
PubMedID: 28992692

Title : The genome draft of coconut (Cocos nucifera) - Xiao_2017_Gigascience_6_1
Author(s) : Xiao Y , Xu P , Fan H , Baudouin L , Xia W , Bocs S , Xu J , Li Q , Guo A , Zhou L , Li J , Wu Y , Ma Z , Armero A , Issali AE , Liu N , Peng M , Yang Y
Ref : Gigascience , 6 :1 , 2017
Abstract : Coconut palm (Cocos nucifera,2n = 32), a member of genus Cocos and family Arecaceae (Palmaceae), is an important tropical fruit and oil crop. Currently, coconut palm is cultivated in 93 countries, including Central and South America, East and West Africa, Southeast Asia and the Pacific Islands, with a total growth area of more than 12 million hectares [1]. Coconut palm is generally classified into 2 main categories: "Tall" (flowering 8-10 years after planting) and "Dwarf" (flowering 4-6 years after planting), based on morphological characteristics and breeding habits. This Palmae species has a long growth period before reproductive years, which hinders conventional breeding progress. In spite of initial successes, improvements made by conventional breeding have been very slow. In the present study, we obtained de novo sequences of the Cocos nucifera genome: a major genomic resource that could be used to facilitate molecular breeding in Cocos nucifera and accelerate the breeding process in this important crop. A total of 419.67 gigabases (Gb) of raw reads were generated by the Illumina HiSeq 2000 platform using a series of paired-end and mate-pair libraries, covering the predicted Cocos nucifera genome length (2.42 Gb, variety "Hainan Tall") to an estimated x173.32 read depth. A total scaffold length of 2.20 Gb was generated (N50 = 418 Kb), representing 90.91% of the genome. The coconut genome was predicted to harbor 28 039 protein-coding genes, which is less than in Phoenix dactylifera (PDK30: 28 889), Phoenix dactylifera (DPV01: 41 660), and Elaeis guineensis (EG5: 34 802). BUSCO evaluation demonstrated that the obtained scaffold sequences covered 90.8% of the coconut genome and that the genome annotation was 74.1% complete. Genome annotation results revealed that 72.75% of the coconut genome consisted of transposable elements, of which long-terminal repeat retrotransposons elements (LTRs) accounted for the largest proportion (92.23%). Comparative analysis of the antiporter gene family and ion channel gene families between C. nucifera and Arabidopsis thaliana indicated that significant gene expansion may have occurred in the coconut involving Na+/H+ antiporter, carnitine/acylcarnitine translocase, potassium-dependent sodium-calcium exchanger, and potassium channel genes. Despite its agronomic importance, C. nucifera is still under-studied. In this report, we present a draft genome of C. nucifera and provide genomic information that will facilitate future functional genomics and molecular-assisted breeding in this crop species.
ESTHER : Xiao_2017_Gigascience_6_1
PubMedSearch : Xiao_2017_Gigascience_6_1
PubMedID: 29048487
Gene_locus related to this paper: cocnu-a0a8k0hu18

Title : Four new bi-phenylethylchromones from artificial agarwood - Xiang_2017_Fitoterapia_120_61
Author(s) : Xiang P , Mei W , Chen H , Kong F , Wang H , Liao G , Zhou L , Dai H
Ref : Fitoterapia , 120 :61 , 2017
Abstract : Four new bi-phenylethylchromones (1-4) were isolated from the EtOAc extract of artificial agarwood induced by holing method originating from Aquilaria sinensis (Lour.) Gilg. The structures of new compounds were unambiguously elucidated by one- and two-dimensional NMR and HRESIMS measurements, and the absolute configuration was determined by analysis of circular dichroism (CD) spectra. All compounds were tested for acetylcholinesterase (AChE) inhibitory activity using modified Ellman's colorimetric method and alpha-glucosidase inhibitory activity using PNPG method. Compounds 2-4 exhibited different levels of inhibitory activity against AChE with the inhibition ratios in the range of 10-45%. However, none of the compounds was active against the alpha-glucosidase.
ESTHER : Xiang_2017_Fitoterapia_120_61
PubMedSearch : Xiang_2017_Fitoterapia_120_61
PubMedID: 28576723

Title : Dibenzo-alpha-pyrones: a new class of larvicidal metabolites against Aedes aegypti from the endophytic fungus Hyalodendriella sp. Ponipodef12 - Mao_2017_Pest.Manag.Sci_73_1478
Author(s) : Mao Z , Lai D , Liu X , Fu X , Meng J , Wang A , Wang X , Sun W , Liu ZL , Zhou L , Liu Y
Ref : Pest Manag Sci , 73 :1478 , 2017
Abstract : BACKGROUND: In our search for new agrochemicals from endophytic fungi, the crude extract of the endophytic Hyalodendriella sp. Ponipodef12 associated with the hybrid 'Neva' of Populus deltoides Marsh x P. nigra L. was found to possess larvicidal activity against Aedes aegypti.
RESULTS: Fractionation of the extract has led to the isolation of 11 dibenzo-alpha-pyrones (1-11), including three new congeners: hyalodendriols A-C (1-3). The structures of the new compounds were elucidated by comprehensive spectroscopic analyses, including the modified Mosher's method for the assignment of the absolute configuration. Compounds 2-7 showed potent larvicidal activities against the fourth-instar larvae of A. aegypti with IC50 values ranging from 7.21 to 120.81 microg mL-1 . Among them, penicilliumolide D (6) displayed the strongest activity (IC50 = 7.21 microg mL-1 ). A structure-larvicidal activity relationship was discussed. The possible mode of action of these compounds was assessed for their acetylcholinesterase inhibitory activities. In addition, hyalodendriol C (3) displayed antibacterial activity against Bacillus subtilis and Xanthomonas vesicatoria, and exhibited strong inhibition against the spore germination of Magnaporthe oryzae. CONCLUSION: Our study revealed dibenzo-alpha-pyrones to be a new class of larvicidal metabolites against A. aegypti. (c) 2016 Society of Chemical Industry.
ESTHER : Mao_2017_Pest.Manag.Sci_73_1478
PubMedSearch : Mao_2017_Pest.Manag.Sci_73_1478
PubMedID: 27862895

Title : The Potential Liver, Brain, and Embryo Toxicity of Titanium Dioxide Nanoparticles on Mice - Jia_2017_Nanoscale.Res.Lett_12_478
Author(s) : Jia X , Wang S , Zhou L , Sun L
Ref : Nanoscale Res Lett , 12 :478 , 2017
Abstract : Nanoscale titanium dioxide (nano-TiO2) has been widely used in industry and medicine. However, the safety of nano-TiO2 exposure remains unclear. In this study, we evaluated the liver, brain, and embryo toxicity and the underlying mechanism of nano-TiO2 using mice models. The results showed that titanium was distributed to and accumulated in the heart, brain, spleen, lung, and kidney of mice after intraperitoneal (i.p.) nano-TiO2 exposure, in a dose-dependent manner. The organ/body weight ratios of the heart, spleen, and kidney were significantly increased, and those of the brain and lung were decreased. High doses of nano-TiO2 significantly damaged the functions of liver and kidney and glucose and lipid metabolism, as showed in the blood biochemistry tests. Nano-TiO2 caused damages in mitochondria and apoptosis of hepatocytes, generation of reactive oxygen species, and expression disorders of protective genes in the liver of mice. We found ruptured and cracked nerve cells and inflammatory cell infiltration in the brain. We also found that the activities of constitutive nitric oxide synthases (cNOS), inducible NOS (iNOS), and acetylcholinesterase, and the levels of nitrous oxide and glutamic acid were changed in the brain after nano-TiO2 exposure. Ex vivo mouse embryo models exhibited developmental and genetic toxicity after high doses of nano-TiO2. The size of nano-TiO2 particles may affect toxicity, larger particles producing higher toxicity. In summary, nano-TiO2 exhibited toxicity in multiple organs in mice after exposure through i.p. injection and gavage. Our study may provide data for the assessment of the risk of nano-TiO2 exposure on human health.
ESTHER : Jia_2017_Nanoscale.Res.Lett_12_478
PubMedSearch : Jia_2017_Nanoscale.Res.Lett_12_478
PubMedID: 28774157

Title : Pretreatment serum pseudocholinesterase level as a novel prognostic biomarker for upper tract urothelial carcinoma - Zhang_2016_Int.Urol.Nephrol_48_1993
Author(s) : Zhang B , Shen C , Jin J , Song Y , Zhao Z , Zhang X , Wang G , Fan Y , Mi Y , Hu S , Cui Y , Zhou L , He Z , Yu W , Han W
Ref : International Urology & Nephrology , 48 :1993 , 2016
Abstract : PURPOSE: Pretreatment serum pseudocholinesterase (PChE) has been reported to be a prognostic predictor in several cancers. However, the prognostic significance of serum PChE level in patients with upper tract urothelial carcinoma (UTUC) remains unknown.
METHODS: A total of 180 patients who underwent radical nephroureterectomy (RNU) for UTUC were included in this retrospective analysis. The associations of pretreatment serum PChE levels with clinicopathological characteristics and clinical outcomes were assessed.
RESULTS: The median (IQR) pretreatment serum PChE level was 6385 (5449-7260) IU/L, and an optimal cutoff value of 5336 IU/L was set according to ROC analysis. Decreased pretreatment serum PChE levels were significantly correlated with older patient age, higher preoperative chronic kidney disease (CKD) stage and pT stage (all P < 0.05). On multivariate analysis, adjusting for preoperative variables, decreased pretreatment serum PChE levels independently predicted higher pT stage (P = 0.011). Moreover, Kaplan-Meier curves suggested that patients with PChE levels <5336 IU/L were predicted to have a shorter overall survival (OS) and cancer-specific survival (CSS) than those with PChE levels >/=5336 IU/L (both P < 0.001). On multivariate analysis, decreased pretreatment serum PChE levels were significantly associated with shorter OS (HR 0.553; 95 %CI 0.322-0.951; P = 0.032) and CSS (HR 0.484; 95 %CI 0.269-0.870; P = 0.015).
CONCLUSIONS: Decreased pretreatment serum PChE level is an independent predictor for higher pT stage, shorter OS and CSS in patients with UTUC. Pretreatment serum PChE levels may act as a simple and effective parameter to predict prognosis for UTUC patients after RNU.
ESTHER : Zhang_2016_Int.Urol.Nephrol_48_1993
PubMedSearch : Zhang_2016_Int.Urol.Nephrol_48_1993
PubMedID: 27554671

Title : NDRG1 overexpression promotes the progression of esophageal squamous cell carcinoma through modulating Wnt signaling pathway - Ai_2016_Cancer.Biol.Ther_17_943
Author(s) : Ai R , Sun Y , Guo Z , Wei W , Zhou L , Liu F , Hendricks DT , Xu Y , Zhao X
Ref : Cancer Biol Ther , 17 :943 , 2016
Abstract : N-myc down-regulated gene 1 (NDRG1) has been shown to regulate tumor growth and metastasis in various malignant tumors and also to be dysregulated in esophageal squamous cell carcinoma (ESCC). Here, we show that NDRG1 overexpression (91.9%, 79/86) in ESCC tumor tissues is associated with poor overall survival of esophageal cancer patients. When placed in stable transfectants of the KYSE 30 ESCC cell line generated by lentiviral transduction with the ectopic overexpression of NDRG1, the expression of transducin-like enhancer of Split 2 (TLE2) was decreased sharply, however beta-catenin was increased. Mechanistically, NDRG1 physically associates with TLE2 and beta-catenin to affect the Wnt pathway. RNA interference and TLE2 overexpression studies demonstrate that NDRG1 fails to active Wnt pathway compared with isogenic wild-type controls. Strikingly, NDRG1 overexpression induces the epithelial mesenchymal transition (EMT) through activating the Wnt signaling pathway in ESCC cells, decreased the expression of E-cadherin and enhanced the expression of Snail. Our study elucidates a mechanism of NDRG1-regulated Wnt pathway activation and EMT via affecting TLE2 and beta-catenin expression in esophageal cancer cells. This indicates a pro-oncogenic role for NDRG1 in esophageal cancer cells whereby it modulates tumor progression.
ESTHER : Ai_2016_Cancer.Biol.Ther_17_943
PubMedSearch : Ai_2016_Cancer.Biol.Ther_17_943
PubMedID: 27414086

Title : Arsenicitalea aurantiaca gen. nov., sp. nov., a new member of the family Hyphomicrobiaceae, isolated from high-arsenic sediment - Mu_2016_Int.J.Syst.Evol.Microbiol_66_5478
Author(s) : Mu Y , Zhou L , Zeng XC , Liu L , Pan Y , Chen X , Wang J , Li S , Li WJ , Wang Y
Ref : Int J Syst Evol Microbiol , 66 :5478 , 2016
Abstract : A novel arsenic-resistant bacterium, designated 42-50T, was isolated from the high-arsenic sediment of Jianghan Plain, Hubei Province, China. Phylogenetic and biochemical analysis indicated that this bacterium represents the first species of a novel genus belonging to the family Hyphomicrobiaceae. The 16S rRNA gene of strain 42-50T shares 96.3-94.2, 96.3, 96.2 and 94.9-93.8 % sequence identities to those of species from the genera Devosia, Youhaiella, Paradevosia and Pelagibacterium, respectively. The major cellular fatty acids are C16 : 0, C18 : 0, C18 : 1omega7c 11-methyl and summed feature 8 (comprising C18 : 1omega7c and C18 : 1omega6c). The predominant polar lipids are diphosphatidylglycerol, phosphatidylglycerol and two unidentified glycolipids. The predominant respiratory quinone is ubiquinone-10 (Q-10). The DNA G+C content of strain 42-50T is 73.7 mol%. The distinct phylogenetic lineage and unique cellular fatty acids suggest that strain 42-50T represents a novel species of a new genus affiliated with the family Hyphomicrobiaceae, for which the name Arsenicitalea aurantiaca gen. nov., sp. nov. is proposed. The type strain is 42-50T (=CCTCC AB 2014325T=KCTC 42825T).
ESTHER : Mu_2016_Int.J.Syst.Evol.Microbiol_66_5478
PubMedSearch : Mu_2016_Int.J.Syst.Evol.Microbiol_66_5478
PubMedID: 27902179
Gene_locus related to this paper: 9rhiz-a0a433xfq5

Title : Baicalein improves behavioral dysfunction induced by Alzheimer's disease in rats - Zhou_2016_Neuropsychiatr.Dis.Treat_12_3145
Author(s) : Zhou L , Tan S , Shan YL , Wang YG , Cai W , Huang XH , Liao XY , Li HY , Zhang L , Zhang BJ , Lu ZQ
Ref : Neuropsychiatr Dis Treat , 12 :3145 , 2016
Abstract : BACKGROUND: Alzheimer's disease (AD) is considered to be a neurodegenerative disorder that is characterized by increased oxidative stress. Medicinal plants, with their antioxidant properties, have been used to cure several human diseases. The aim of the current study was to explore the protective and therapeutic effect of baicalein on AD-induced rats. MATERIALS AND
METHODS: Swiss Wistar rats were used in the study. The rats were divided into five groups. Group I: normal control group treated with water; Group II: disease control treated with AlCl3 to induce the mimicking AD for 4 successive weeks (SW); Group III: normal control group treated with baicalein (5 mg/kg) for 2 SW followed by combination of baicalein and AlCl3 for 4 SW; Group IV: normal control group treated with baicalein (10 mg/kg) for 2 SW followed by combination of baicalein and AlCl3 for 4 SW; Group V: normal control group treated with rivastigmine (0.3 mg/kg) for 2 SW followed by combination of rivastigmine and AlCl3 for 4 SW. Moreover, the therapeutic groups are as follows: Group VI: AD disease control treated with AlCl3 for 4 SW and serving as the therapeutic positive group; Group VII: AD disease control + baicalein (5 mg/kg) for 12 SW; Group VIII: AD disease control + baicalein (10 mg/kg) for 12 SW; Group IX: AD disease control + rivastigmine (0.3 mg/kg) for 12 SW. Behavioral test, T-maze, and rotarod test were also performed before and after the treatment. At the end of the experimental study, all the rats were sacrificed and their brains were removed and divided into two portions. The first portion was homogenated for estimating the level of acetylcholinesterase (AchE) and acetylcholine (Ach). Another portion was used for histopathological evaluation.
RESULTS: The current investigation showed that baicalein significantly reduced the duration of revolving on the rotarod, cage activity, and T-maze activity in a dose-dependent manner compared with the AD control group rats. It also altered the AchE and Ach levels in the brain homogenates. The histopathology study also provides strength to the protective effect of baicalein. CONCLUSION: The current study showed that baicalein significantly (P<0.05) improved the biochemical and histopathological condition of AD in rats.
ESTHER : Zhou_2016_Neuropsychiatr.Dis.Treat_12_3145
PubMedSearch : Zhou_2016_Neuropsychiatr.Dis.Treat_12_3145
PubMedID: 28003750

Title : Draft Genome Sequence of Brevibacillus panacihumi Strain W25, a Halotolerant Hydrocarbon-Degrading Bacterium - Wang_2014_Genome.Announc_2_e01215
Author(s) : Wang X , Jin D , Zhou L , Wu L , An W , Chen Y , Zhao L
Ref : Genome Announc , 2 : , 2014
Abstract : Brevibacillus panacihumi strain W25 was isolated from hydrocarbon-contaminated saline soil. Here, we report the 5.5-Mb draft genome sequence of this strain, which may provide insights into the mechanism of microbial hydrocarbon degradation in saline environments.
ESTHER : Wang_2014_Genome.Announc_2_e01215
PubMedSearch : Wang_2014_Genome.Announc_2_e01215
PubMedID: 24459276
Gene_locus related to this paper: 9bacl-v6m6g6 , 9bacl-v6m535

Title : Specific adaptation of Ustilaginoidea virens in occupying host florets revealed by comparative and functional genomics - Zhang_2014_Nat.Commun_5_3849
Author(s) : Zhang Y , Zhang K , Fang A , Han Y , Yang J , Xue M , Bao J , Hu D , Zhou B , Sun X , Li S , Wen M , Yao N , Ma LJ , Liu Y , Zhang M , Huang F , Luo C , Zhou L , Li J , Chen Z , Miao J , Wang S , Lai J , Xu JR , Hsiang T , Peng YL , Sun W
Ref : Nat Commun , 5 :3849 , 2014
Abstract : Ustilaginoidea virens (Cooke) Takah is an ascomycetous fungus that causes rice false smut, a devastating emerging disease worldwide. Here we report a 39.4 Mb draft genome sequence of U. virens that encodes 8,426 predicted genes. The genome has ~25% repetitive sequences that have been affected by repeat-induced point mutations. Evolutionarily, U. virens is close to the entomopathogenic Metarhizium spp., suggesting potential host jumping across kingdoms. U. virens possesses reduced gene inventories for polysaccharide degradation, nutrient uptake and secondary metabolism, which may result from adaptations to the specific floret infection and biotrophic lifestyles. Consistent with their potential roles in pathogenicity, genes for secreted proteins and secondary metabolism and the pathogen-host interaction database genes are highly enriched in the transcriptome during early infection. We further show that 18 candidate effectors can suppress plant hypersensitive responses. Together, our analyses offer new insights into molecular mechanisms of evolution, biotrophy and pathogenesis of U. virens.
ESTHER : Zhang_2014_Nat.Commun_5_3849
PubMedSearch : Zhang_2014_Nat.Commun_5_3849
PubMedID: 24846013
Gene_locus related to this paper: ustvr-a0a063bxn3

Title : Draft Genome Sequence of Gordonia alkanivorans Strain CGMCC6845, a Halotolerant Hydrocarbon-Degrading Bacterium - Wang_2014_Genome.Announc_2_e01274
Author(s) : Wang X , Jin D , Zhou L , Wu L , An W , Zhao L
Ref : Genome Announc , 2 : , 2014
Abstract : Gordonia alkanivorans strain CGMCC6845 is a halotolerant hydrocarbon-degrading bacterium isolated from petroleum-contaminated saline soil. Here we present the 5.0-Mb draft genome sequence of this strain, which will improve our understanding of the diversity of G. alkanivorans and the mechanisms of microbial hydrocarbon degradation in saline environment.
ESTHER : Wang_2014_Genome.Announc_2_e01274
PubMedSearch : Wang_2014_Genome.Announc_2_e01274
PubMedID: 24482528
Gene_locus related to this paper: 9acto-f9vud5 , 9acto-f9vut3 , 9acto-f9vtq6

Title : Population genomics reveal recent speciation and rapid evolutionary adaptation in polar bears - Liu_2014_Cell_157_785
Author(s) : Liu S , Lorenzen ED , Fumagalli M , Li B , Harris K , Xiong Z , Zhou L , Korneliussen TS , Somel M , Babbitt C , Wray G , Li J , He W , Wang Z , Fu W , Xiang X , Morgan CC , Doherty A , O'Connell MJ , McInerney JO , Born EW , Dalen L , Dietz R , Orlando L , Sonne C , Zhang G , Nielsen R , Willerslev E , Wang J
Ref : Cell , 157 :785 , 2014
Abstract : Polar bears are uniquely adapted to life in the High Arctic and have undergone drastic physiological changes in response to Arctic climates and a hyper-lipid diet of primarily marine mammal prey. We analyzed 89 complete genomes of polar bear and brown bear using population genomic modeling and show that the species diverged only 479-343 thousand years BP. We find that genes on the polar bear lineage have been under stronger positive selection than in brown bears; nine of the top 16 genes under strong positive selection are associated with cardiomyopathy and vascular disease, implying important reorganization of the cardiovascular system. One of the genes showing the strongest evidence of selection, APOB, encodes the primary lipoprotein component of low-density lipoprotein (LDL); functional mutations in APOB may explain how polar bears are able to cope with life-long elevated LDL levels that are associated with high risk of heart disease in humans.
ESTHER : Liu_2014_Cell_157_785
PubMedSearch : Liu_2014_Cell_157_785
PubMedID: 24813606
Gene_locus related to this paper: ursma-a0a384cw87 , ursma-a0a384cqm7 , ursma-a0a452vbh6 , ursma-a0a384cyu0

Title : Separation and purification of bioactive botrallin and TMC-264 by a combination of HSCCC and semi-preparative HPLC from endophytic fungus Hyalodendriella sp. Ponipodef12 - Mao_2014_World.J.Microbiol.Biotechnol_30_2533
Author(s) : Mao Z , Luo R , Luo H , Tian J , Liu H , Yue Y , Wang M , Peng Y , Zhou L
Ref : World J Microbiol Biotechnol , 30 :2533 , 2014
Abstract : Two dibenzo-alpha-pyrones, botrallin (1) and TMC-264 (2) were preparatively separated from crude ethyl acetate extract of the endophytic fungus Hyalodendriella sp. Ponipodef12, which was isolated from the hybrid 'Neva' of Populus deltoides Marsh x P. nigra L. using a combination of high-speed counter-current chromatography (HSCCC) and semi-preparative HPLC. Botrallin (1) with 74.73 % of purity and TMC-264 (2) with 82.29 % of purity were obtained through HSCCC by employing a solvent system containing n-hexane-ethyl acetate-methanol-water at a volume ratio of 1.2:1.0:0.9:1.0. It was the first time for TMC-264 (2) to be isolated from this fungus. TMC-264 (2) showed strong antimicrobial and antinematodal activity, and botrallin (1) exhibited moderate inhibitory activity on acetylcholinesterase.
ESTHER : Mao_2014_World.J.Microbiol.Biotechnol_30_2533
PubMedSearch : Mao_2014_World.J.Microbiol.Biotechnol_30_2533
PubMedID: 24898177

Title : Importing, caring, breeding, genotyping, and phenotyping a genetic mouse in a chinese university - Kuo_2014_J.Mol.Neurosci_53_487
Author(s) : Kuo ST , Wu QH , Liu B , Xie ZL , Wu X , Shang SJ , Zhang XY , Kang XJ , Liu LN , Zhu FP , Wang YS , Hu MQ , Xu HD , Zhou L , Chai ZY , Zhang QF , Liu W , Teng SS , Wang CH , Guo N , Dou HQ , Zuo PL , Zheng LH , Zhang CX , Zhu DS , Wang L , Wang SR , Zhou Z
Ref : Journal of Molecular Neuroscience , 53 :487 , 2014
Abstract : The genetic manipulation of the laboratory mouse has been well developed and generated more and more mouse lines for biomedical research. To advance our science exploration, it is necessary to share genetically modified mouse lines with collaborators between institutions, even in different countries. The transfer process is complicated. Significant paperwork and coordination are required, concerning animal welfare, intellectual property rights, colony health status, and biohazard. Here, we provide a practical example of importing a transgenic mice line, Dynamin 1 knockout mice, from Yale University in the USA to Perking University in China for studying cell secretion. This example including the length of time that required for paper work, mice quarantine at the receiving institution, and expansion of the mouse line for experiments. The procedure described in this paper for delivery live transgenic mice from USA to China may serve a simple reference for transferring mouse lines between other countries too.
ESTHER : Kuo_2014_J.Mol.Neurosci_53_487
PubMedSearch : Kuo_2014_J.Mol.Neurosci_53_487
PubMedID: 24385195

Title : Natural Dibenzo-alpha-Pyrones and Their Bioactivities - Mao_2014_Molecules_19_5088
Author(s) : Mao Z , Sun W , Fu L , Luo H , Lai D , Zhou L
Ref : Molecules , 19 :5088 , 2014
Abstract : Natural dibenzo-alpha-pyrones are an important group of metabolites derived from fungi, mycobionts, plants and animal feces. They exhibit a variety of biological activities such as toxicity on human and animals, phytotoxicity as well as cytotoxic, antioxidant, antiallergic, antimicrobial, antinematodal, and acetylcholinesterase inhibitory properties. Dibenzo-alpha-pyrones are biosynthesized via the polyketide pathway in microorganisms or metabolized from plant-derived ellagitannins and ellagic acid by intestinal bacteria. At least 53 dibenzo-alpha-pyrones have been reported in the past few decades. This mini-review aims to briefly summarize the occurrence, biosynthesis, biotransformation, as well as their biological activities and functions. Some considerations related to synthesis, production and applications of dibenzo-alpha-pyrones are also discussed.
ESTHER : Mao_2014_Molecules_19_5088
PubMedSearch : Mao_2014_Molecules_19_5088
PubMedID: 24759070

Title : Effect of Cocaine on Ion Channels and Glutamatergic EPSCs in Noradrenergic Locus Coeruleus Neurons - Liu_2014_J.Mol.Neurosci_53_345
Author(s) : Liu LN , Zhu FP , Song MY , Kang XJ , Shang SJ , Zhang XY , Xu HD , Teng SS , Liu B , Kuo ST , Liu W , Li ML , Zhou L , Jiao RY , Wang CH , Wang SR , Yang H , Zhang B , Zhou Z , Xu ZQ
Ref : Journal of Molecular Neuroscience , 53 :345 , 2014
Abstract : The locus coeruleus (LC) is an important brainstem area involved in cocaine addiction. However, evidence to elucidate how cocaine modulates the activity of LC neurons remains incomplete. Here, we performed whole recordings in brain slices to evaluate the effects of cocaine on the sodium (Na(+)), potassium (K(+)), calcium (Ca(2+)) channels, and glutamatergic synaptic transmission in the locus coeruleus neurons. Local application of cocaine significantly and reversibly reduced the spontaneous firing rate but did not affect action potential amplitude, rising time, decay time, or half width of noradrenergic locus coeruleus neurons. Moreover, cocaine attenuated the sodium current but did not affect potassium and calcium currents. The N-methyl-D-aspartate receptor mediated excitatory postsynaptic currents were reduced by neuropeptide galanin but not cocaine. All those data demonstrate that cocaine has inhibitory effect on the spontaneous activities and sodium current in locus coeruleus neurons. Therefore, neuromodulation of sodium channel in locus coeruleus neurons may play an important role in drug addiction.
ESTHER : Liu_2014_J.Mol.Neurosci_53_345
PubMedSearch : Liu_2014_J.Mol.Neurosci_53_345
PubMedID: 24214104

Title : Draft Genome Sequence of Advenella kashmirensis Strain W13003, a Polycyclic Aromatic Hydrocarbon-Degrading Bacterium - Wang_2014_Genome.Announc_2_e00003
Author(s) : Wang X , Jin D , Zhou L , Wu L , An W , Zhao L
Ref : Genome Announc , 2 : , 2014
Abstract : Advenella kashmirensis strain W13003 is a polycyclic aromatic hydrocarbon (PAH)-degrading bacterium isolated from PAH-contaminated marine sediments. Here, we report the 4.8-Mb draft genome sequence of this strain, which will provide insights into the diversity of A. kashmirensis and the mechanism of PAH degradation in the marine environment.
ESTHER : Wang_2014_Genome.Announc_2_e00003
PubMedSearch : Wang_2014_Genome.Announc_2_e00003
PubMedID: 24482505
Gene_locus related to this paper: 9burk-v8qqd2 , 9burk-v8qwq7 , 9burk-v8qui1 , 9burk-v8qu97 , 9burk-v8ql39

Title : Enhanced therapeutic efficacy of combined use of sorafenib and transcatheter arterial chemoembolization for treatment of advanced hepatocellular carcinoma - Zhou_2014_Jpn.J.Clin.Oncol_44_711
Author(s) : Zhou L , Li J , Ai DL , Fu JL , Peng XM , Zhang LZ , Wang JY , Zhao Y , Yang B , Yu Q , Liu CZ , Wang HM
Ref : Japanese Journal of Clinical Oncology , 44 :711 , 2014
Abstract : OBJECTIVE: Clinical trials suggest that combining transcatheter arterial chemoembolization with sorafenib in patients with advanced hepatocellular carcinoma shows a superior safety and tolerability profile. Our study aimed to retrospectively analyze the utility and prognostic factors of this combined therapy in these patients.
METHODS: Patients with advanced hepatocellular carcinoma, treated by transcatheter arterial chemoembolization and sorafenib subsequently, between February 2010 and September 2012 in our hospital, were retrospectively analyzed. After sorafenib treatment for 12 weeks, abdominal enhanced computed tomography or magnetic resonance imaging was used to evaluate short-term outcomes and clinical benefit rate. Overall survival and adverse events were recorded during follow-up. Univariate and multivariate analyses were used to identify relationships between baseline characteristics and overall survival.
RESULTS: Fifty-one advanced hepatocellular carcinoma patients were included. Common adverse events for sorafenib were hand-foot skin reaction, alopecia, diarrhea, anorexia and fatigue. The clinical benefit rate was 64% and the median survival time was 7.5 months. Median survival of patients with and without portal vein tumor thrombi was 6.0 months and 10.3 months (P < 0.001), respectively. Median survival of patients with cholinesterase >/=5000 U/l and < 5000 U/l was 10.6 months and 6.1 months (P < 0.001), respectively. Multivariate analysis identified the presence of portal vein tumor thrombi and low cholinesterase level as independent negative predictors of survival.
CONCLUSIONS: Combining sorafenib and transcatheter arterial chemoembolization was safe and effective for advanced hepatocellular carcinoma patients with extrahepatic spread but without portal vein tumor thrombi. Portal vein tumor thrombi and cholinesterase level are independent predictors of prognosis following this combined therapy.
ESTHER : Zhou_2014_Jpn.J.Clin.Oncol_44_711
PubMedSearch : Zhou_2014_Jpn.J.Clin.Oncol_44_711
PubMedID: 24855686

Title : Oncogenic but non-essential role of N-myc downstream regulated gene 1 in the progression of esophageal squamous cell carcinoma - Wei_2012_Cancer.Biol.Ther_14_
Author(s) : Wei W , Bracher-Manecke JC , Zhao X , Davies NH , Zhou L , Ai R , Oliver L , Vallette FM , Hendricks DT
Ref : Cancer Biol Ther , 14 : , 2012
Abstract : N-myc downstream regulated gene 1 (NDRG1/Cap43/Drg-1) has previously been shown to be dysregulated in esophageal squamous cell carcinoma (ESCC). In this study, we investigated the role of NDRG1 in the neoplastic progression of ESCC using ectopic gain-of-function and loss-of-function approaches. Stable transfectants of the KYSE30 ESCC cell line with altered NDRG1 levels were generated by lentiviral transduction. Although no measurable effects on in vitro cell proliferation were observed with altered NDRG1 expression, the ectopic overexpression of NDRG1 was positively linked to recognized markers of metastasis, angiogenesis and apoptotic evasion. Accordingly, in the nude mouse xenograft model system, NDRG1 overexpression promoted the in vivo growth of KYSE30 derived xenografts, which could be attributed to the reduced apoptotic and enhanced angiogenic activities associated with this gene. These processes were mediated in part by increased NFkappaB activity in NDRG1 overexpressing cells. Nevertheless, no significant phenotypic changes were observed in response to NDRG1 knock-down, suggesting that this gene might not be essential for the neoplastic progression of ESCC. Taken together, our results suggest that NDRG1 may play positive but dispensable roles in the progression of esophageal squamous cell carcinoma.
ESTHER : Wei_2012_Cancer.Biol.Ther_14_
PubMedSearch : Wei_2012_Cancer.Biol.Ther_14_
PubMedID: 23192272

Title : Benzopyranones from the endophytic fungus Hyalodendriella sp. Ponipodef12 and their bioactivities - Meng_2012_Molecules_17_11303
Author(s) : Meng X , Mao Z , Lou J , Xu L , Zhong L , Peng Y , Zhou L , Wang M
Ref : Molecules , 17 :11303 , 2012
Abstract : The endophytic fungus Hyalodendriella sp. Ponipodef12 was isolated from the hybrid 'Neva' of Populus deltoides Marsh x P. nigra L. In this study, four benzopyranones were isolated from the ethyl acetate extract of Hyalodendriella sp. Ponipodef12, and identified as palmariol B (1), 4-hydroxymellein (2), alternariol 9-methyl ether (3), and botrallin (4) by means of physicochemical and spectroscopic analysis. All the compounds were evaluated for their antibacterial, antifungal, antinematodal and acetylcholinesterase inhibitory activities. 4-Hydroxymellein (2) exhibited stronger antibacterial activity than the other compounds. Palmariol B (1) showed stronger antimicrobial, antinematodal and acetylcholinesterase inhibitory activities than alternariol 9-methyl ether (3) which indicated that the chlorine substitution at position 2 may contribute to its bioactivity. The results indicate the potential of this endophytic fungus as a source of bioactive benzopyranones.
ESTHER : Meng_2012_Molecules_17_11303
PubMedSearch : Meng_2012_Molecules_17_11303
PubMedID: 23011274

Title : Implication of lipid metabolism disturbance and Alzheimer's disease: focus on the lipoprotein lipase plays an important role in learning and memory function PMCID: PMC3287633 -
Author(s) : Chui D , Zhou T , Zhou L , Yang H , Liu X , Liu T , Yu J , Liu Y , Wu XF , Zhang H , Fan D
Ref : Mol Neurodegener , 7 Suppl 1 :O9 , 2012

Title : Diversity and plasticity of the intracellular plant pathogen and insect symbiont Candidatus Liberibacter asiaticus as revealed by hypervariable prophage genes with intragenic tandem repeats - Zhou_2011_Appl.Environ.Microbiol_77_6663
Author(s) : Zhou L , Powell CA , Hoffman MT , Li W , Fan G , Liu B , Lin H , Duan Y
Ref : Applied Environmental Microbiology , 77 :6663 , 2011
Abstract : "Candidatus Liberibacter asiaticus" is a psyllid-transmitted, phloem-limited alphaproteobacterium and the most prevalent species of "Ca. Liberibacter" associated with a devastating worldwide citrus disease known as huanglongbing (HLB). Two related and hypervariable genes (hyv(I) and hyv(II)) were identified in the prophage regions of the Psy62 "Ca. Liberibacter asiaticus" genome. Sequence analyses of the hyv(I) and hyv(II) genes in 35 "Ca. Liberibacter asiaticus" DNA isolates collected globally revealed that the hyv(I) gene contains up to 12 nearly identical tandem repeats (NITRs, 132 bp) and 4 partial repeats, while hyv(II) contains up to 2 NITRs and 4 partial repeats and shares homology with hyv(I). Frequent deletions or insertions of these repeats within the hyv(I) and hyv(II) genes were observed, none of which disrupted the open reading frames. Sequence conservation within the individual repeats but an extensive variation in repeat numbers, rearrangement, and the sequences flanking the repeat region indicate the diversity and plasticity of "Ca. Liberibacter asiaticus" bacterial populations in the world. These differences were found not only in samples of distinct geographical origins but also in samples from a single origin and even from a single "Ca. Liberibacter asiaticus"-infected sample. This is the first evidence of different "Ca. Liberibacter asiaticus" populations coexisting in a single HLB-affected sample. The Florida "Ca. Liberibacter asiaticus" isolates contain both hyv(I) and hyv(II), while all other global "Ca. Liberibacter asiaticus" isolates contain either one or the other. Interclade assignments of the putative Hyv(I) and Hyv(II) proteins from Florida isolates with other global isolates in phylogenetic trees imply multiple "Ca. Liberibacter asiaticus" populations in the world and a multisource introduction of the "Ca. Liberibacter asiaticus" bacterium into Florida.
ESTHER : Zhou_2011_Appl.Environ.Microbiol_77_6663
PubMedSearch : Zhou_2011_Appl.Environ.Microbiol_77_6663
PubMedID: 21784907
Gene_locus related to this paper: libap-c6xgr3

Title : The Medicago genome provides insight into the evolution of rhizobial symbioses - Young_2011_Nature_480_520
Author(s) : Young ND , Debelle F , Oldroyd GE , Geurts R , Cannon SB , Udvardi MK , Benedito VA , Mayer KF , Gouzy J , Schoof H , Van de Peer Y , Proost S , Cook DR , Meyers BC , Spannagl M , Cheung F , De Mita S , Krishnakumar V , Gundlach H , Zhou S , Mudge J , Bharti AK , Murray JD , Naoumkina MA , Rosen B , Silverstein KA , Tang H , Rombauts S , Zhao PX , Zhou P , Barbe V , Bardou P , Bechner M , Bellec A , Berger A , Berges H , Bidwell S , Bisseling T , Choisne N , Couloux A , Denny R , Deshpande S , Dai X , Doyle JJ , Dudez AM , Farmer AD , Fouteau S , Franken C , Gibelin C , Gish J , Goldstein S , Gonzalez AJ , Green PJ , Hallab A , Hartog M , Hua A , Humphray SJ , Jeong DH , Jing Y , Jocker A , Kenton SM , Kim DJ , Klee K , Lai H , Lang C , Lin S , Macmil SL , Magdelenat G , Matthews L , McCorrison J , Monaghan EL , Mun JH , Najar FZ , Nicholson C , Noirot C , O'Bleness M , Paule CR , Poulain J , Prion F , Qin B , Qu C , Retzel EF , Riddle C , Sallet E , Samain S , Samson N , Sanders I , Saurat O , Scarpelli C , Schiex T , Segurens B , Severin AJ , Sherrier DJ , Shi R , Sims S , Singer SR , Sinharoy S , Sterck L , Viollet A , Wang BB , Wang K , Wang M , Wang X , Warfsmann J , Weissenbach J , White DD , White JD , Wiley GB , Wincker P , Xing Y , Yang L , Yao Z , Ying F , Zhai J , Zhou L , Zuber A , Denarie J , Dixon RA , May GD , Schwartz DC , Rogers J , Quetier F , Town CD , Roe BA
Ref : Nature , 480 :520 , 2011
Abstract : Legumes (Fabaceae or Leguminosae) are unique among cultivated plants for their ability to carry out endosymbiotic nitrogen fixation with rhizobial bacteria, a process that takes place in a specialized structure known as the nodule. Legumes belong to one of the two main groups of eurosids, the Fabidae, which includes most species capable of endosymbiotic nitrogen fixation. Legumes comprise several evolutionary lineages derived from a common ancestor 60 million years ago (Myr ago). Papilionoids are the largest clade, dating nearly to the origin of legumes and containing most cultivated species. Medicago truncatula is a long-established model for the study of legume biology. Here we describe the draft sequence of the M. truncatula euchromatin based on a recently completed BAC assembly supplemented with Illumina shotgun sequence, together capturing approximately 94% of all M. truncatula genes. A whole-genome duplication (WGD) approximately 58 Myr ago had a major role in shaping the M. truncatula genome and thereby contributed to the evolution of endosymbiotic nitrogen fixation. Subsequent to the WGD, the M. truncatula genome experienced higher levels of rearrangement than two other sequenced legumes, Glycine max and Lotus japonicus. M. truncatula is a close relative of alfalfa (Medicago sativa), a widely cultivated crop with limited genomics tools and complex autotetraploid genetics. As such, the M. truncatula genome sequence provides significant opportunities to expand alfalfa's genomic toolbox.
ESTHER : Young_2011_Nature_480_520
PubMedSearch : Young_2011_Nature_480_520
PubMedID: 22089132
Gene_locus related to this paper: medtr-b7fki4 , medtr-b7fmi1 , medtr-g7itl1 , medtr-g7iu67 , medtr-g7izm0 , medtr-g7j641 , medtr-g7jtf8 , medtr-g7jtg2 , medtr-g7jtg4 , medtr-g7kem3 , medtr-g7kml3 , medtr-g7ksx5 , medtr-g7leb3 , medtr-q1s5d8 , medtr-q1s9m3 , medtr-q1t171 , medtr-g7k9e1 , medtr-g7k9e3 , medtr-g7k9e5 , medtr-g7k9e8 , medtr-g7k9e9 , medtr-g7lbp2 , medtr-g7lch3 , medtr-g7ib94 , medtr-g7ljk8 , medtr-g7i6w5 , medtr-g7kvg4 , medtr-g7iam1 , medtr-g7iam3 , medtr-g7l754 , medtr-g7jr41 , medtr-g7l4f5 , medtr-g7l755 , medtr-a0a072vyl4 , medtr-g7jwk8 , medtr-a0a072vhg0 , medtr-a0a072vrv9 , medtr-g7kmk5 , medtr-a0a072uuf6 , medtr-a0a072urp3 , medtr-g7zzc3 , medtr-g7ie19 , medtr-g7kst7 , medtr-a0a072u5k5 , medtr-a0a072v056 , medtr-scp1 , medtr-g7kyn0 , medtr-g7inw6 , medtr-g7j3q3

Title : Immobilization of Candida antarctica lipase B by adsorption in organic medium - Sun_2010_N.Biotechnol_27_53
Author(s) : Sun J , Jiang Y , Zhou L , Gao J
Ref : N Biotechnol , 27 :53 , 2010
Abstract : Candida antarctica lipase B (CALB) was immobilized on the macroporous resin by physical adsorption in organic medium. The immobilization was performed in 5 mL isooctane, and the immobilization conditions were optimized. The results were achieved with the mass ratio of lipase to support 1:80, the buffer of pH 6.0, initial addition of PBS 75 microL, and immobilization time of two hours at 30 degrees C. Under the optimal conditions, the activity recovery was 83.3%. IM-CALB presented enhanced pH and thermal stability compared to the free lipase, and showed comparable stability with the commercial Novozym 435, after 7 times repeated use for catalyzing the synthesis of ethyl lactate, 56.9% of its initial activity was retained, and only 24.7% was retained when used for catalyzing the hydrolysis of olive oil.
ESTHER : Sun_2010_N.Biotechnol_27_53
PubMedSearch : Sun_2010_N.Biotechnol_27_53
PubMedID: 20004754

Title : Regulation of gene expression by FSP27 in white and brown adipose tissue - Li_2010_BMC.Genomics_11_446
Author(s) : Li D , Zhang Y , Xu L , Zhou L , Wang Y , Xue B , Wen Z , Li P , Sang J
Ref : BMC Genomics , 11 :446 , 2010
Abstract : BACKGROUND: Brown and white adipose tissues (BAT and WAT) play critical roles in controlling energy homeostasis and in the development of obesity and diabetes. The mouse Fat-Specific protein 27 (FSP27), a member of the cell death-inducing DFF45-like effector (CIDE) family, is expressed in both BAT and WAT and is associated with lipid droplets. Over-expression of FSP27 promotes lipid storage, whereas FSP27 deficient mice have improved insulin sensitivity and are resistant to diet-induced obesity. In addition, FSP27-deficient white adipocytes have reduced lipid storage, smaller lipid droplets, increased mitochondrial activity and a higher expression of several BAT-selective genes. To elucidate the molecular mechanism by which FSP27 controls lipid storage and gene expression in WAT and BAT, we systematically analyzed the gene expression profile of FSP27-deficient WAT by microarray analysis and compared the expression levels of a specific set of genes in WAT and BAT by semi-quantitative real-time PCR analysis.
RESULTS: BAT-selective genes were significantly up-regulated, whereas WAT-selective genes were down-regulated in the WAT of FSP27-deficient mice. The expression of the BAT-selective genes was also dramatically up-regulated in the WAT of leptin/FSP27 double deficient mice. In addition, the expression levels of genes involved in multiple metabolic pathways, including oxidative phosphorylation, the TCA cycle, fatty acid synthesis and fatty acid oxidation, were increased in the FSP27-deficient WAT. In contrast, the expression levels for genes involved in extracellular matrix remodeling, the classic complement pathway and TGF-beta signaling were down-regulated in the FSP27-deficient WAT. Most importantly, the expression levels of regulatory factors that determine BAT identity, such as CEBP alpha/beta, PRDM16 and major components of the cAMP pathway, were markedly up-regulated in the WAT of FSP27-deficient mice. The expression levels of these regulatory factors were also up-regulated in leptin/FSP27 double deficient mice. Interestingly, distinct gene expression profiles were observed in the BAT of FSP27-deficient mice. Taken together, these data suggest that the WAT of FSP27-deficient mice have a gene expression profile similar to that of BAT.
CONCLUSIONS: FSP27 acts as a molecular determinant that controls gene expression for a diversity of metabolic and signaling pathways and, in particular, the expression of regulatory factors, including CEBP alpha/beta, PRDM16 and components of the cAMP signaling pathway, that control the identity of WAT and BAT.
ESTHER : Li_2010_BMC.Genomics_11_446
PubMedSearch : Li_2010_BMC.Genomics_11_446
PubMedID: 20649970

Title : Synthesis of thermo-sensitive copolymer with affinity butyl ligand and its application in lipase purification - Zhou_2010_J.Chromatogr.B.Analyt.Technol.Biomed.Life.Sci_878_1025
Author(s) : Zhou L , Wan J , Cao X
Ref : Journal of Chromatography B Analyt Technol Biomed Life Sciences , 878 :1025 , 2010
Abstract : In this study, thermo-sensitive N-alkyl substituted polyacrylamide polymer P(NNB) was synthesized by using N-hydroxymethyl acrylamide(NHAM), N-isopropyl acrylamide (NIPA) and butyl acrylate (BA) as monomers, and its low critical solution temperature (LCST) was controlled to be 28 degrees C. The recovery of the thermo-sensitive polymer was over 98%. Butanol as a hydrophobic ligand was covalently attached onto polymer P(NNB) and butyl ligand density was 80 micromol g(-1) polymer. The affinity polymer was used for purification of lipase from crude material. Optimized condition was pH 7.0, 35 degrees C adsorption temperature, 120 min adsorption time and 0.5 mg ml(-1) initial concentration of lipase. The adsorption isotherm accords with a typical Langmuir isotherm. The maximum adsorption capacity (Q(m)) of the affinity polymer for lipase was 24.8 mg g(-1)polymer. The affinity copolymer could be recycled by temperature-inducing precipitation and there was only about 6% loss of adsorption capacity after five recyclings. Specific activity of lipase was improved from 14IU mg(-1) to 506 IU mg(-1) protein, and its recovery achieved 82%. The affinity polymer is suitable for the purification of target proteins from the crude material with large volume and dilute solution.
ESTHER : Zhou_2010_J.Chromatogr.B.Analyt.Technol.Biomed.Life.Sci_878_1025
PubMedSearch : Zhou_2010_J.Chromatogr.B.Analyt.Technol.Biomed.Life.Sci_878_1025
PubMedID: 20363673

Title : Three genomes from the phylum Acidobacteria provide insight into the lifestyles of these microorganisms in soils - Ward_2009_Appl.Environ.Microbiol_75_2046
Author(s) : Ward NL , Challacombe JF , Janssen PH , Henrissat B , Coutinho PM , Wu M , Xie G , Haft DH , Sait M , Badger J , Barabote RD , Bradley B , Brettin TS , Brinkac LM , Bruce D , Creasy T , Daugherty SC , Davidsen TM , DeBoy RT , Detter JC , Dodson RJ , Durkin AS , Ganapathy A , Gwinn-Giglio M , Han CS , Khouri H , Kiss H , Kothari SP , Madupu R , Nelson KE , Nelson WC , Paulsen I , Penn K , Ren Q , Rosovitz MJ , Selengut JD , Shrivastava S , Sullivan SA , Tapia R , Thompson LS , Watkins KL , Yang Q , Yu C , Zafar N , Zhou L , Kuske CR
Ref : Applied Environmental Microbiology , 75 :2046 , 2009
Abstract : The complete genomes of three strains from the phylum Acidobacteria were compared. Phylogenetic analysis placed them as a unique phylum. They share genomic traits with members of the Proteobacteria, the Cyanobacteria, and the Fungi. The three strains appear to be versatile heterotrophs. Genomic and culture traits indicate the use of carbon sources that span simple sugars to more complex substrates such as hemicellulose, cellulose, and chitin. The genomes encode low-specificity major facilitator superfamily transporters and high-affinity ABC transporters for sugars, suggesting that they are best suited to low-nutrient conditions. They appear capable of nitrate and nitrite reduction but not N(2) fixation or denitrification. The genomes contained numerous genes that encode siderophore receptors, but no evidence of siderophore production was found, suggesting that they may obtain iron via interaction with other microorganisms. The presence of cellulose synthesis genes and a large class of novel high-molecular-weight excreted proteins suggests potential traits for desiccation resistance, biofilm formation, and/or contribution to soil structure. Polyketide synthase and macrolide glycosylation genes suggest the production of novel antimicrobial compounds. Genes that encode a variety of novel proteins were also identified. The abundance of acidobacteria in soils worldwide and the breadth of potential carbon use by the sequenced strains suggest significant and previously unrecognized contributions to the terrestrial carbon cycle. Combining our genomic evidence with available culture traits, we postulate that cells of these isolates are long-lived, divide slowly, exhibit slow metabolic rates under low-nutrient conditions, and are well equipped to tolerate fluctuations in soil hydration.
ESTHER : Ward_2009_Appl.Environ.Microbiol_75_2046
PubMedSearch : Ward_2009_Appl.Environ.Microbiol_75_2046
PubMedID: 19201974
Gene_locus related to this paper: korve-q1ihr9 , korve-q1ii02 , korve-q1iit0 , korve-q1ilk4 , korve-q1imj9 , korve-q1ims4 , korve-q1iqj0 , korve-q1isy7 , korve-q1itj5 , korve-q1itz6 , korve-q1ivc8 , acic5-c1f1u6 , acic5-c1f2i7 , acic5-c1f4m6 , acic5-c1f4y4 , acic5-c1f5a7 , acic5-c1f5u2 , acic5-c1f7a9 , acic5-c1f7x6 , acic5-c1f8y9 , acic5-c1f9m2 , acic5-c1f594 , acic5-c1f609 , acic5-c1f692 , acic5-c1f970 , acic5-c1fa52 , korve-q1iiw2 , korve-q1ivn9 , solue-q01nb0 , solue-q01qj6 , solue-q01r37 , solue-q01rq8 , solue-q01rz0 , solue-q01t44 , solue-q01t57 , solue-q01ts5 , solue-q01tv4 , solue-q01vd8 , solue-q01vr3 , solue-q01vw5 , solue-q01w12 , solue-q01wt9 , solue-q01y40 , solue-q01ym8 , solue-q01z24 , solue-q01z97 , solue-q01zl4 , solue-q01zm0 , solue-q01zm5 , solue-q01zm7 , solue-q02aa4 , solue-q02ab9 , solue-q02b72 , solue-q02bs8 , solue-q02bt7 , solue-q02cp0 , solue-q02d61 , solue-q020h3 , solue-q020i8 , solue-q021i6 , solue-q022b1 , solue-q022p8 , solue-q022q2 , solue-q022q3 , solue-q022x2 , solue-q022x5 , solue-q022x6 , solue-q022x8 , solue-q023e7 , solue-q024d9 , solue-q025c1 , solue-q026j1 , solue-q026k6 , solue-q026r6 , solue-q027p2 , solue-q027r8 , solue-q01zt5 , korve-q1itw6 , solue-q01yh7 , solue-q02ad6 , korve-q1imj6 , korve-q1iuf6 , acic5-c1f891 , solue-q026h7

Title : [Immobilized lipase-catalyzed synthesis of biodiesel from crude cottonseed oil] - Liu_2009_Sheng.Wu.Gong.Cheng.Xue.Bao_25_1996
Author(s) : Liu W , Zhou L , Jiang Y , Gao J
Ref : Sheng Wu Gong Cheng Xue Bao , 25 :1996 , 2009
Abstract : We investigated the transesterification of crude cottonseed oil with methyl acetate to biodiesel, by using Lipozyme TL IM and Novozym 435 as catalysts. Results showed that the biodiesel yield significantly increased with the addition of methanol into the reaction system, and the highest biodiesel yield of 91.83% was achieved with the optimum conditions as follows: n-hexane as solvent, molar ratio of methyl acetate to oil 9:1, 3% methanol based on the oil mass to inhibit the creation of acetic acid, 10% Lipozyme TL IM and 5% Novozym 435 as catalyst based on the oil mass, reaction temperature 55 degrees C and reaction time 8 h. Additionally, we explored the kinetics of lipase-catalyzed crude cottonseed oil to biodiesel, and proposed a kinetic model.
ESTHER : Liu_2009_Sheng.Wu.Gong.Cheng.Xue.Bao_25_1996
PubMedSearch : Liu_2009_Sheng.Wu.Gong.Cheng.Xue.Bao_25_1996
PubMedID: 20352980

Title : Complete genome sequence of citrus huanglongbing bacterium, 'Candidatus Liberibacter asiaticus' obtained through metagenomics - Duan_2009_Mol.Plant.Microbe.Interact_22_1011
Author(s) : Duan Y , Zhou L , Hall DG , Li W , Doddapaneni H , Lin H , Liu L , Vahling CM , Gabriel DW , Williams KP , Dickerman A , Sun Y , Gottwald T
Ref : Mol Plant Microbe Interact , 22 :1011 , 2009
Abstract : Citrus huanglongbing is the most destructive disease of citrus worldwide. It is spread by citrus psyllids and is associated with a low-titer, phloem-limited infection by any of three uncultured species of alpha-Proteobacteria, 'Candidatus Liberibacter asiaticus', 'Ca. L. americanus', and 'Ca. L. africanus'. A complete circular 'Ca. L. asiaticus' genome has been obtained by metagenomics, using the DNA extracted from a single 'Ca. L. asiaticus'-infected psyllid. The 1.23-Mb genome has an average 36.5% GC content. Annotation revealed a high percentage of genes involved in both cell motility (4.5%) and active transport in general (8.0%), which may contribute to its virulence. 'Ca. L. asiaticus' appears to have a limited ability for aerobic respiration and is likely auxotrophic for at least five amino acids. Consistent with its intracellular nature, 'Ca. L. asiaticus' lacks type III and type IV secretion systems as well as typical free-living or plant-colonizing extracellular degradative enzymes. 'Ca. L. asiaticus' appears to have all type I secretion system genes needed for both multidrug efflux and toxin effector secretion. Multi-protein phylogenetic analysis confirmed 'Ca. L. asiaticus' as an early-branching and highly divergent member of the family Rhizobiaceae. This is the first genome sequence of an uncultured alpha-proteobacteria that is both an intracellular plant pathogen and insect symbiont.
ESTHER : Duan_2009_Mol.Plant.Microbe.Interact_22_1011
PubMedSearch : Duan_2009_Mol.Plant.Microbe.Interact_22_1011
PubMedID: 19589076
Gene_locus related to this paper: libap-c6xhk4 , libap-c6xgr3

Title : An organophosphorus hapten used in the preparation of monoclonal antibody and as an active immunization vaccine in the detoxication of soman poisoning - Jia_2009_Toxicol.Lett_187_45
Author(s) : Jia P , Wang Y , Yu M , Wu J , Yang R , Zhao Y , Zhou L
Ref : Toxicol Lett , 187 :45 , 2009
Abstract : Soman is an organophosphorus neurotoxin which inhibits the activity of acetylcholinesterase (AChE). The goal of this work was to find out whether antibodies against an organophosphorus hapten could protect mice from soman toxicity. An organophosphorus hapten P6 was synthesized. Its chemical conjugates with limulus polyphemus hemocyanin and bovine serum albumin were used as immune antigen (P6-LPH) and detection antigen (P6-BSA), respectively. Eight hybridoma cell lines secreting monoclonal antibodies (Mabs) were established. The binding reactivities of Mabs with P6 and soman were determined by competitive inhibition enzyme immunoassay (CIEIA). All antibodies recognized P6 and four of them (2C10, 3G1, 3B9 and 3C11) combined with soman. The IC(50) was 10(-6.5) to 10(-5.3)mol/l for P6 and 10(-5) to 10(-3.5)mol/l for soman. Furthermore, Mab 3G1 reduced the inhibition of AChE activity by soman in vitro. When soman was pre-incubated with Mabs before being injected into mice, soman potency was reduced, indicating that Mabs could protect mice from soman toxicity. In an active immunization regimen, mice immunized with P6-LPH and challenged with 0.15mg/kg soman injected subcutaneously, had fewer signs of intoxication and a higher survival rate compared with control mice. These results demonstrate that the anti-soman antibodies have proper characteristics as scavengers in the detoxication of soman poisoning.
ESTHER : Jia_2009_Toxicol.Lett_187_45
PubMedSearch : Jia_2009_Toxicol.Lett_187_45
PubMedID: 19429243

Title : Rational design and synthesis of highly potent anti-acetylcholinesterase activity huperzine A derivatives - Yan_2009_Bioorg.Med.Chem_17_6937
Author(s) : Yan J , Sun L , Wu G , Yi P , Yang F , Zhou L , Zhang X , Li Z , Yang X , Luo H , Qiu M
Ref : Bioorganic & Medicinal Chemistry , 17 :6937 , 2009
Abstract : By targeting multi-active sites of acetylcholinesterase (AChE), a series of huperzine A (Hup A) derivatives with various aromatic ring groups were designed and synthesized by Schiff reaction. They were evaluated as AChE and butyrylcholinesterase (BChE) inhibitors. Results showed very significant specificity that the group of imine derivatives could inhibit TcAChE and hAChE, but no inhibitory effect on hBChE was detected. The experiment was explained by a docking study. In the docking model, we confirmed that aromatic ring of Hup A derivatives played the pi-pi stacking against aminophenol residues of AChE, and the structure-activity relationship (SAR) was discussed.
ESTHER : Yan_2009_Bioorg.Med.Chem_17_6937
PubMedSearch : Yan_2009_Bioorg.Med.Chem_17_6937
PubMedID: 19726199

Title : Detection of broadly distributed sodium channel alleles characteristic of insect pyrethroid resistance in West Nile virus vector Culex pipiens complex mosquitoes in the United States - Zhou_2009_J.Med.Entomol_46_321
Author(s) : Zhou L , Lawrence GG , Vineis JH , McAllister JC , Wirtz RA , Brogdon WG
Ref : Journal of Medical Entomology , 46 :321 , 2009
Abstract : West Nile virus (WNV) has emerged as a health threat to the North American population since its initial outbreak in New York City in 1999. Culex (Culex) pipiens complex mosquitoes have been considered to play the primary role in the enzootic maintenance and transmission of WNV in North America. The voltage-gated sodium channel (NaCh) gene contains pyrethroid resistance-associated mutations in the coding region in many insect species. However, the knowledge of potential NaCh mutations was minimal in Culex. Seeking pyrethroid resistance alleles in Culex, we evaluated a transect along the east coast of the United States with an NaCh-based genotyping tool that amplified a portion of the transcribed sequence containing kdr mutations and the intron immediately downstream of the mutation site. Three genotypes that are typically associated with pyrethroid resistance in insects have been identified in Culex pipiens complex mosquitoes in this study: susceptible wild type kds, the classical knock-down resistance Leu --> Phe mutation (Phe/kdr), and a second resistance mechanism, a Leu --> Ser mutation (Ser/kdr). Moreover, we observed heterozygotic individual mosquitoes possessing both kdr alleles. Results of this study advance our knowledge of the potential for pyrethroid insecticide resistance among the populations of Cx. pipiens complex in the United States.
ESTHER : Zhou_2009_J.Med.Entomol_46_321
PubMedSearch : Zhou_2009_J.Med.Entomol_46_321
PubMedID: 19351083

Title : Mechanism of bis(7)-tacrine inhibition of GABA-activated current in cultured rat hippocampal neurons - Zhou_2009_Neuropharmacol_57_33
Author(s) : Zhou L , Liu YW , Peoples RW , Yang M , Tian X , Ai YX , Pang YP , Li ZW , Han YF , Li CY
Ref : Neuropharmacology , 57 :33 , 2009
Abstract : Bis(7)-tacrine is a novel dimeric acetylcholinesterase inhibitor derived from tacrine that shows promise for the treatment of Alzheimer's disease. We have previously reported that bis(7)-tacrine inhibits GABA(A) receptors. In the present study we investigated the mechanism of bis(7)-tacrine inhibition of GABA(A) receptor function using whole-cell patch-clamp recording in cultured rat hippocampal neurons. Bis(7)-tacrine produced a gradual decline of GABA-activated current to a steady-state, but this was not an indication of use-dependence, as the gradually declining component could be eliminated by exposure to bis(7)-tacrine prior to GABA application. In addition, bis(7)-tacrine inhibition did not require the presence of agonist, and GABA-activated current recovered completely from inhibition by bis(7)-tacrine in the absence of agonist. The slow onset of inhibition by bis(7)-tacrine was not apparently due to an action at an intracellular site, as inclusion of 25 microM bis(7)-tacrine in the recording pipette did not alter inhibition by bis(7)-tacrine applied externally. Bis(7)-tacrine shifted the GABA concentration-response curve to the right in a parallel manner and the pA(2) value estimated from a Schild plot was 5.7. Bis(7)-tacrine increased the time constant of activation of GABA-gated ion channels without affecting the time constants of deactivation or desensitization. These results suggest that bis(7)-tacrine is a competitive GABA(A) receptor antagonist with slow onset and offset kinetics. The competitive inhibition of GABA receptors by bis(7)-tacrine could contribute to its ability to enhance memory.
ESTHER : Zhou_2009_Neuropharmacol_57_33
PubMedSearch : Zhou_2009_Neuropharmacol_57_33
PubMedID: 19393253

Title : Genetic and biochemical characterization of the poly(3-hydroxybutyrate-co-3-hydroxyvalerate) synthase in Haloferax mediterranei - Lu_2008_J.Bacteriol_190_4173
Author(s) : Lu Q , Han J , Zhou L , Zhou J , Xiang H
Ref : Journal of Bacteriology , 190 :4173 , 2008
Abstract : The haloarchaeon Haloferax mediterranei has shown promise for the economical production of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), a desirable bioplastic. However, little is known at present about the genes involved in PHBV synthesis in the domain Archaea. In this study, we cloned the gene cluster (phaEC(Hme)) encoding a polyhydroxyalkanoate (PHA) synthase in H. mediterranei CGMCC 1.2087 via thermal asymmetric interlaced PCR. Western blotting revealed that the phaE(Hme) and phaC(Hme) genes were constitutively expressed, and both the PhaE(Hme) and PhaC(Hme) proteins were strongly bound to the PHBV granules. Interestingly, CGMCC 1.2087 could synthesize PHBV in either nutrient-limited medium (supplemented with 1% starch) or nutrient-rich medium, up to 24 or 18% (wt/wt) in shaking flasks. Knockout of the phaEC(Hme) genes in CGMCC 1.2087 led to a complete loss of PHBV synthesis, and only complementation with the phaEC(Hme) genes together (but not either one alone) could restore to this mutant the capability for PHBV accumulation. The known haloarchaeal PhaC subunits are much longer at their C termini than their bacterial counterparts, and the C-terminal extension of PhaC(Hme) was proven to be indispensable for its function in vivo. Moreover, the mixture of purified PhaE(Hme)/PhaC(Hme) (1:1) showed significant activity of PHA synthase in vitro. Taken together, our results indicated that a novel member of the class III PHA synthases, composed of PhaC(Hme) and PhaE(Hme), accounted for the PHBV synthesis in H. mediterranei.
ESTHER : Lu_2008_J.Bacteriol_190_4173
PubMedSearch : Lu_2008_J.Bacteriol_190_4173
PubMedID: 18408025
Gene_locus related to this paper: halme-b3frm5

Title : Molecular characterization of the phaECHm genes, required for biosynthesis of poly(3-hydroxybutyrate) in the extremely halophilic archaeon Haloarcula marismortui - Han_2007_Appl.Environ.Microbiol_73_6058
Author(s) : Han J , Lu Q , Zhou L , Zhou J , Xiang H
Ref : Applied Environmental Microbiology , 73 :6058 , 2007
Abstract : Although many haloarchaea produce biodegradable polyhydroxyalkanoates (PHAs), the genes involved in PHA synthesis in the domain of Archaea have not yet been experimentally investigated yet. In this study, we revealed that Haloarcula marismortui was able to accumulate poly(3-hydroxybutyrate) (PHB) up to 21% of cellular dry weight when cultured in a minimal medium with excessive glucose and identified the phaE(Hm) and phaC(Hm) genes, probably encoding two subunits of a class III PHA synthase. These two genes were adjacent and directed by a single promoter located 26 bp upstream of the transcriptional start site and were constitutively expressed under both nutrient-rich and -limited conditions. Interestingly, PhaC(Hm) was revealed to be strongly bound with the PHB granules, but PhaE(Hm) seemed not to be. Introduction of either the phaE(Hm) or phaC(Hm) gene into Haloarcula hispanica, which harbors highly homologous phaEC(Hh) genes, could enhance the PHB synthesis in the recombinant strains, while coexpression of the both genes always generated the highest PHB yield. Significantly, knockout of the phaEC(Hh) genes in H. hispanica led to a complete loss of the PHA synthase activity. Complementation with phaEC(Hm) genes, but not a single one, restored the capability of PHB accumulation as well as the PHA synthase activity in this phaEC-deleted haloarchaeon. These results indicated that the phaEC genes are required for biosynthesis of PHB and might encode an active PHA synthase in the Haloarcula species.
ESTHER : Han_2007_Appl.Environ.Microbiol_73_6058
PubMedSearch : Han_2007_Appl.Environ.Microbiol_73_6058
PubMedID: 17675423
Gene_locus related to this paper: halma-q5uym0

Title : Comparative genomic evidence for a close relationship between the dimorphic prosthecate bacteria Hyphomonas neptunium and Caulobacter crescentus - Badger_2006_J.Bacteriol_188_6841
Author(s) : Badger JH , Hoover TR , Brun YV , Weiner RM , Laub MT , Alexandre G , Mrazek J , Ren Q , Paulsen IT , Nelson KE , Khouri HM , Radune D , Sosa J , Dodson RJ , Sullivan SA , Rosovitz MJ , Madupu R , Brinkac LM , Durkin AS , Daugherty SC , Kothari SP , Giglio MG , Zhou L , Haft DH , Selengut JD , Davidsen TM , Yang Q , Zafar N , Ward NL
Ref : Journal of Bacteriology , 188 :6841 , 2006
Abstract : The dimorphic prosthecate bacteria (DPB) are alpha-proteobacteria that reproduce in an asymmetric manner rather than by binary fission and are of interest as simple models of development. Prior to this work, the only member of this group for which genome sequence was available was the model freshwater organism Caulobacter crescentus. Here we describe the genome sequence of Hyphomonas neptunium, a marine member of the DPB that differs from C. crescentus in that H. neptunium uses its stalk as a reproductive structure. Genome analysis indicates that this organism shares more genes with C. crescentus than it does with Silicibacter pomeroyi (a closer relative according to 16S rRNA phylogeny), that it relies upon a heterotrophic strategy utilizing a wide range of substrates, that its cell cycle is likely to be regulated in a similar manner to that of C. crescentus, and that the outer membrane complements of H. neptunium and C. crescentus are remarkably similar. H. neptunium swarmer cells are highly motile via a single polar flagellum. With the exception of cheY and cheR, genes required for chemotaxis were absent in the H. neptunium genome. Consistent with this observation, H. neptunium swarmer cells did not respond to any chemotactic stimuli that were tested, which suggests that H. neptunium motility is a random dispersal mechanism for swarmer cells rather than a stimulus-controlled navigation system for locating specific environments. In addition to providing insights into bacterial development, the H. neptunium genome will provide an important resource for the study of other interesting biological processes including chromosome segregation, polar growth, and cell aging.
ESTHER : Badger_2006_J.Bacteriol_188_6841
PubMedSearch : Badger_2006_J.Bacteriol_188_6841
PubMedID: 16980487
Gene_locus related to this paper: hypna-q0bwt8 , hypna-q0bwv5 , hypna-q0bww7 , hypna-q0bxb2 , hypna-q0bxr5 , hypna-q0by84 , hypna-q0byl3 , hypna-q0bz23 , hypna-q0bzi5 , hypna-q0c0f7 , hypna-q0c0f8 , hypna-q0c2v8 , hypna-q0c2w1 , hypna-q0c2w4 , hypna-q0c3g0 , hypna-q0c4j0 , hypna-q0c4n1 , hypna-q0c4q9 , hypna-q0c4v5 , hypna-q0c386 , hypna-q0c539 , hypna-q0c611

Title : Comparative genomics of emerging human ehrlichiosis agents - Dunning Hotopp_2006_PLoS.Genet_2_e21
Author(s) : Dunning Hotopp JC , Lin M , Madupu R , Crabtree J , Angiuoli SV , Eisen JA , Seshadri R , Ren Q , Wu M , Utterback TR , Smith S , Lewis M , Khouri H , Zhang C , Niu H , Lin Q , Ohashi N , Zhi N , Nelson W , Brinkac LM , Dodson RJ , Rosovitz MJ , Sundaram J , Daugherty SC , Davidsen T , Durkin AS , Gwinn M , Haft DH , Selengut JD , Sullivan SA , Zafar N , Zhou L , Benahmed F , Forberger H , Halpin R , Mulligan S , Robinson J , White O , Rikihisa Y , Tettelin H
Ref : PLoS Genet , 2 :e21 , 2006
Abstract : Anaplasma (formerly Ehrlichia) phagocytophilum, Ehrlichia chaffeensis, and Neorickettsia (formerly Ehrlichia) sennetsu are intracellular vector-borne pathogens that cause human ehrlichiosis, an emerging infectious disease. We present the complete genome sequences of these organisms along with comparisons to other organisms in the Rickettsiales order. Ehrlichia spp. and Anaplasma spp. display a unique large expansion of immunodominant outer membrane proteins facilitating antigenic variation. All Rickettsiales have a diminished ability to synthesize amino acids compared to their closest free-living relatives. Unlike members of the Rickettsiaceae family, these pathogenic Anaplasmataceae are capable of making all major vitamins, cofactors, and nucleotides, which could confer a beneficial role in the invertebrate vector or the vertebrate host. Further analysis identified proteins potentially involved in vacuole confinement of the Anaplasmataceae, a life cycle involving a hematophagous vector, vertebrate pathogenesis, human pathogenesis, and lack of transovarial transmission. These discoveries provide significant insights into the biology of these obligate intracellular pathogens.
ESTHER : Dunning Hotopp_2006_PLoS.Genet_2_e21
PubMedSearch : Dunning Hotopp_2006_PLoS.Genet_2_e21
PubMedID: 16482227
Gene_locus related to this paper: anapz-q2gj80 , anapz-q2gle9 , anapz-q2glf0 , anapz-q2gln7 , ehrch-q40iu0 , ehrch-q40jj7 , ehrcr-q2gfq9 , neosm-q2gcq8 , neosm-q2gdf2 , neosm-q2gcn8 , anapz-q2gk48 , ehrcr-q2ggj6

Title : Whole-genome sequence analysis of Pseudomonas syringae pv. phaseolicola 1448A reveals divergence among pathovars in genes involved in virulence and transposition - Joardar_2005_J.Bacteriol_187_6488
Author(s) : Joardar V , Lindeberg M , Jackson RW , Selengut J , Dodson R , Brinkac LM , Daugherty SC , Deboy R , Durkin AS , Giglio MG , Madupu R , Nelson WC , Rosovitz MJ , Sullivan S , Crabtree J , Creasy T , Davidsen T , Haft DH , Zafar N , Zhou L , Halpin R , Holley T , Khouri H , Feldblyum T , White O , Fraser CM , Chatterjee AK , Cartinhour S , Schneider DJ , Mansfield J , Collmer A , Buell CR
Ref : Journal of Bacteriology , 187 :6488 , 2005
Abstract : Pseudomonas syringae pv. phaseolicola, a gram-negative bacterial plant pathogen, is the causal agent of halo blight of bean. In this study, we report on the genome sequence of P. syringae pv. phaseolicola isolate 1448A, which encodes 5,353 open reading frames (ORFs) on one circular chromosome (5,928,787 bp) and two plasmids (131,950 bp and 51,711 bp). Comparative analyses with a phylogenetically divergent pathovar, P. syringae pv. tomato DC3000, revealed a strong degree of conservation at the gene and genome levels. In total, 4,133 ORFs were identified as putative orthologs in these two pathovars using a reciprocal best-hit method, with 3,941 ORFs present in conserved, syntenic blocks. Although these two pathovars are highly similar at the physiological level, they have distinct host ranges; 1448A causes disease in beans, and DC3000 is pathogenic on tomato and Arabidopsis. Examination of the complement of ORFs encoding virulence, fitness, and survival factors revealed a substantial, but not complete, overlap between these two pathovars. Another distinguishing feature between the two pathovars is their distinctive sets of transposable elements. With access to a fifth complete pseudomonad genome sequence, we were able to identify 3,567 ORFs that likely comprise the core Pseudomonas genome and 365 ORFs that are P. syringae specific.
ESTHER : Joardar_2005_J.Bacteriol_187_6488
PubMedSearch : Joardar_2005_J.Bacteriol_187_6488
PubMedID: 16159782
Gene_locus related to this paper: pse14-q48cb3 , pse14-q48ck7 , pse14-q48cs3 , pse14-q48ct2 , pse14-q48d82 , pse14-q48da3 , pse14-q48dj9 , pse14-q48dq5 , pse14-q48e33 , pse14-q48es1 , pse14-q48f84 , pse14-q48fg2 , pse14-q48g47 , pse14-q48g51 , pse14-q48gq9 , pse14-q48h40 , pse14-q48ha4 , pse14-q48hb4 , pse14-q48he1 , pse14-q48hq0 , pse14-q48hq2 , pse14-q48ia0 , pse14-q48im0 , pse14-q48j48 , pse14-q48ji2 , pse14-q48k54 , pse14-q48k55 , pse14-q48k63 , pse14-q48kc1 , pse14-q48kt9 , pse14-q48ku0 , pse14-q48lb6 , pse14-q48lj1 , pse14-q48ln2 , pse14-q48m56 , pse14-q48mh5 , pse14-q48mq7 , pse14-q48nt0 , pse14-q48p24 , pse14-q48pi7 , pse14-q48pi8 , pse14-q48pi9 , pse14-q48pq2 , pse14-q48pq5 , psesm-METX , psesm-q87y20 , psesm-q889k3 , psesy-PIP , psesy-PSPTO0162 , psesy-PSPTO1766 , psesy-PSPTO2134 , psesy-PSPTO3135 , pseu2-q4zwv7 , psesg-e7p3i0

Title : Hydroxychloroquine causes severe vacuolar myopathy in a patient with chronic graft-versus-host disease - Bolanos-Meade_2005_Am.J.Hematol_78_306
Author(s) : Bolanos-Meade J , Zhou L , Hoke A , Corse A , Vogelsang G , Wagner KR
Ref : Am J Hematol , 78 :306 , 2005
Abstract : A 51-year-old man developed progressive debilitating limb and respiratory muscle weakness while undergoing treatment for chronic graft-versus-host disease secondary to allogeneic bone marrow transplant for mantle cell lymphoma. He had a normal serum creatine kinase level and acetylcholine receptor antibodies were negative. Electromyography showed a severe, nonirritable myopathy and a sensory motor axonal polyneuropathy. A muscle biopsy showed a necrotizing, vacuolar myopathy with many fibers containing autophagic and red-rimmed vacuoles, suggestive of an amphiphilic drug myopathy. The patient's strength and function improved significantly after discontinuation of hydroxychloroquine.
ESTHER : Bolanos-Meade_2005_Am.J.Hematol_78_306
PubMedSearch : Bolanos-Meade_2005_Am.J.Hematol_78_306
PubMedID: 15795921

Title : Complete genome sequence of the plant commensal Pseudomonas fluorescens Pf-5 - Paulsen_2005_Nat.Biotechnol_23_873
Author(s) : Paulsen IT , Press CM , Ravel J , Kobayashi DY , Myers GS , Mavrodi DV , DeBoy RT , Seshadri R , Ren Q , Madupu R , Dodson RJ , Durkin AS , Brinkac LM , Daugherty SC , Sullivan SA , Rosovitz MJ , Gwinn ML , Zhou L , Schneider DJ , Cartinhour SW , Nelson WC , Weidman J , Watkins K , Tran K , Khouri H , Pierson EA , Pierson LS, 3rd , Thomashow LS , Loper JE
Ref : Nat Biotechnol , 23 :873 , 2005
Abstract : Pseudomonas fluorescens Pf-5 is a plant commensal bacterium that inhabits the rhizosphere and produces secondary metabolites that suppress soilborne plant pathogens. The complete sequence of the 7.1-Mb Pf-5 genome was determined. We analyzed repeat sequences to identify genomic islands that, together with other approaches, suggested P. fluorescens Pf-5's recent lateral acquisitions include six secondary metabolite gene clusters, seven phage regions and a mobile genomic island. We identified various features that contribute to its commensal lifestyle on plants, including broad catabolic and transport capabilities for utilizing plant-derived compounds, the apparent ability to use a diversity of iron siderophores, detoxification systems to protect from oxidative stress, and the lack of a type III secretion system and toxins found in related pathogens. In addition to six known secondary metabolites produced by P. fluorescens Pf-5, three novel secondary metabolite biosynthesis gene clusters were also identified that may contribute to the biocontrol properties of P. fluorescens Pf-5.
ESTHER : Paulsen_2005_Nat.Biotechnol_23_873
PubMedSearch : Paulsen_2005_Nat.Biotechnol_23_873
PubMedID: 15980861
Gene_locus related to this paper: psef5-metx , psef5-q4k3c9 , psef5-q4k4b4 , psef5-q4k4t4 , psef5-q4k4u7 , psef5-q4k4y2 , psef5-q4k5b5 , psef5-q4k5k6 , psef5-q4k5w4 , psef5-q4k6z9 , psef5-q4k7i6 , psef5-q4k7u9 , psef5-q4k8j2 , psef5-q4k9i3 , psef5-q4k458 , psef5-q4k713 , psef5-q4k717 , psef5-q4k873 , psef5-q4k906 , psef5-q4k982 , psef5-q4k989 , psef5-q4k993 , psef5-q4kax4 , psef5-q4kay8 , psef5-q4kaz0 , psef5-q4kaz4 , psef5-q4kb21 , psef5-q4kbd7 , psef5-q4kbs3 , psef5-q4kbs6 , psef5-q4kc18 , psef5-q4kc21 , psef5-q4kcd3 , psef5-q4kch8 , psef5-q4kcj3 , psef5-q4kck4 , psef5-q4kcn8 , psef5-q4kcq2 , psef5-q4kcx3 , psef5-q4kd54 , psef5-q4kda1 , psef5-q4kdb4 , psef5-q4ke18 , psef5-q4keh1 , psef5-q4kej0 , psef5-q4keq4 , psef5-q4kes9 , psef5-q4kf14 , psef5-q4kfj4 , psef5-q4kfw0 , psef5-q4kfw1 , psef5-q4kfx7 , psef5-q4kgg3 , psef5-q4kgj9 , psef5-q4kgs6 , psef5-q4kh30 , psef5-q4kha2 , psef5-q4khf1 , psef5-q4khl0 , psef5-q4khv5 , psef5-q4ki42 , psef5-q4kj24 , psef5-q4kj95 , psef5-q4kjk5 , psef5-q4kjk7 , psef5-q4kjm8 , psef5-q4kjt7 , psef5-q4kk20 , psef5-q4kk22 , psef5-q4kk59 , psef5-q4kkf7 , psefl-PLTG , psepf-PHAZ , psef5-q4kfd8

Title : The psychrophilic lifestyle as revealed by the genome sequence of Colwellia psychrerythraea 34H through genomic and proteomic analyses - Methe_2005_Proc.Natl.Acad.Sci.U.S.A_102_10913
Author(s) : Methe BA , Nelson KE , Deming JW , Momen B , Melamud E , Zhang X , Moult J , Madupu R , Nelson WC , Dodson RJ , Brinkac LM , Daugherty SC , Durkin AS , DeBoy RT , Kolonay JF , Sullivan SA , Zhou L , Davidsen TM , Wu M , Huston AL , Lewis M , Weaver B , Weidman JF , Khouri H , Utterback TR , Feldblyum TV , Fraser CM
Ref : Proc Natl Acad Sci U S A , 102 :10913 , 2005
Abstract : The completion of the 5,373,180-bp genome sequence of the marine psychrophilic bacterium Colwellia psychrerythraea 34H, a model for the study of life in permanently cold environments, reveals capabilities important to carbon and nutrient cycling, bioremediation, production of secondary metabolites, and cold-adapted enzymes. From a genomic perspective, cold adaptation is suggested in several broad categories involving changes to the cell membrane fluidity, uptake and synthesis of compounds conferring cryotolerance, and strategies to overcome temperature-dependent barriers to carbon uptake. Modeling of three-dimensional protein homology from bacteria representing a range of optimal growth temperatures suggests changes to proteome composition that may enhance enzyme effectiveness at low temperatures. Comparative genome analyses suggest that the psychrophilic lifestyle is most likely conferred not by a unique set of genes but by a collection of synergistic changes in overall genome content and amino acid composition.
ESTHER : Methe_2005_Proc.Natl.Acad.Sci.U.S.A_102_10913
PubMedSearch : Methe_2005_Proc.Natl.Acad.Sci.U.S.A_102_10913
PubMedID: 16043709
Gene_locus related to this paper: colp3-q47uc4 , colp3-q47uc7 , colp3-q47ut6 , colp3-q47ut7 , colp3-q47v81 , colp3-q47vk3 , colp3-q47vy9 , colp3-q47w94 , colp3-q47wj4 , colp3-q47wr2 , colp3-q47ws7 , colp3-q47ws9 , colp3-q47x08 , colp3-q47x48 , colp3-q47yd5 , colp3-q47ye2 , colp3-q47yq1 , colp3-q47yv1 , colp3-q47za7 , colp3-q47zp5 , colp3-q48ac9 , colp3-q48aj8 , colp3-q48aq9 , colp3-q480e1 , colp3-q481z4 , colp3-q482y8 , colp3-q484d8 , colp3-q484k3 , colp3-q485e4 , colp3-q485t4 , colp3-q486t5 , colp3-q487b7 , colp3-q487s5 , colp3-q488a3 , colp3-q488d2 , colp3-q488d8 , colp3-q488e7 , colp3-q488f8 , colp3-q488p2 , colp3-q489b1 , colp3-q489i6 , colp3-q47ya3

Title : Muscle type-dependent responses to insulin in intramyocellular triglyceride turnover in obese rats - Guo_2005_Obes.Res_13_2081
Author(s) : Guo Z , Zhou L
Ref : Obes Res , 13 :2081 , 2005
Abstract : OBJECTIVE: To understand the role of hyperinsulinemia in intramyocellular (imc) triglyceride (TG) accumulation and in regulating imcTG turnover. RESEARCH METHODS AND PROCEDURES: imcTG was first prelabeled by continuous infusion of [U-(14)C]glycerol (pulse), and then the rate of label loss from the prelabeled imcTG pool (turnover) in gastrocnemius, tibialis anterior, and soleus muscle of awake, high-fat-fed obese rats during the subsequent hyperinsulinemic-euglycemic clamp experiments (chase) was determined.
RESULTS: Post-absorptive basal fractional imcTG turnover rate in soleus was 0.010 +/- 0.001/min, significantly lower than that in gastrocnemius (0.026 +/- 0.002/min, p < 0.001) or tibialis anterior (0.030 +/- 0.002/min, p < 0.0001), a pattern reciprocal to their imcTG pool size. Insulin infusion at 25 pmol/kg per minute resulted in pathophysiological hyperinsulinemia (5-fold increase over the baseline value). This caused an increase in imcTG turnover by 3-fold in soleus (0.029 +/- 0.006/min, p = 0.002) but a decrease in gastrocnemius (0.012 +/- 0.003/min, p = 0.001) and in tibialis anterior (0.0064 +/- 0.001/min, p < 0.0001). Pathophysiological hyperinsulinemia suppressed hormone-sensitive lipase activity in heart (p = 0.01) and mesenteric fat (p = 0.05) but not in skeletal muscle (p > 0.05). The pool size of imcTG was not affected by hyperinsulinemia. DISCUSSION: The results demonstrated muscle-type dependence in the response of imcTG turnover to hyperinsulinemia in the obesity model. The reciprocal insulin effects on imcTG turnover in oxidative vs. oxidative-glycolytic muscle indicated a possibility that oxidative muscle contributes more to insulin resistance under hyperinsulinemia if imcTG-fatty acid oxidation is a function of turnover. imcTG turnover does not seem to regulate imcTG pool size acutely.
ESTHER : Guo_2005_Obes.Res_13_2081
PubMedSearch : Guo_2005_Obes.Res_13_2081
PubMedID: 16421341

Title : Genome analysis of multiple pathogenic isolates of Streptococcus agalactiae: implications for the microbial pan-genome - Tettelin_2005_Proc.Natl.Acad.Sci.U.S.A_102_13950
Author(s) : Tettelin H , Masignani V , Cieslewicz MJ , Donati C , Medini D , Ward NL , Angiuoli SV , Crabtree J , Jones AL , Durkin AS , DeBoy RT , Davidsen TM , Mora M , Scarselli M , Margarit y Ros I , Peterson JD , Hauser CR , Sundaram JP , Nelson WC , Madupu R , Brinkac LM , Dodson RJ , Rosovitz MJ , Sullivan SA , Daugherty SC , Haft DH , Selengut J , Gwinn ML , Zhou L , Zafar N , Khouri H , Radune D , Dimitrov G , Watkins K , O'Connor KJ , Smith S , Utterback TR , White O , Rubens CE , Grandi G , Madoff LC , Kasper DL , Telford JL , Wessels MR , Rappuoli R , Fraser CM
Ref : Proc Natl Acad Sci U S A , 102 :13950 , 2005
Abstract : The development of efficient and inexpensive genome sequencing methods has revolutionized the study of human bacterial pathogens and improved vaccine design. Unfortunately, the sequence of a single genome does not reflect how genetic variability drives pathogenesis within a bacterial species and also limits genome-wide screens for vaccine candidates or for antimicrobial targets. We have generated the genomic sequence of six strains representing the five major disease-causing serotypes of Streptococcus agalactiae, the main cause of neonatal infection in humans. Analysis of these genomes and those available in databases showed that the S. agalactiae species can be described by a pan-genome consisting of a core genome shared by all isolates, accounting for approximately 80% of any single genome, plus a dispensable genome consisting of partially shared and strain-specific genes. Mathematical extrapolation of the data suggests that the gene reservoir available for inclusion in the S. agalactiae pan-genome is vast and that unique genes will continue to be identified even after sequencing hundreds of genomes.
ESTHER : Tettelin_2005_Proc.Natl.Acad.Sci.U.S.A_102_13950
PubMedSearch : Tettelin_2005_Proc.Natl.Acad.Sci.U.S.A_102_13950
PubMedID: 16172379
Gene_locus related to this paper: strag-ESTA , strag-GBS0040 , strag-GBS0107 , strag-GBS1828 , strag-pepx , strag-q3dah6 , strag-SAG0246 , strag-SAG0383 , strag-SAG0679 , strag-SAG0680 , strag-SAG0785 , strag-SAG0912 , strag-SAG1562 , strag-SAG2132

Title : The genome sequence of the anaerobic, sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough - Heidelberg_2004_Nat.Biotechnol_22_554
Author(s) : Heidelberg JF , Seshadri R , Haveman SA , Hemme CL , Paulsen IT , Kolonay JF , Eisen JA , Ward N , Methe B , Brinkac LM , Daugherty SC , DeBoy RT , Dodson RJ , Durkin AS , Madupu R , Nelson WC , Sullivan SA , Fouts D , Haft DH , Selengut J , Peterson JD , Davidsen TM , Zafar N , Zhou L , Radune D , Dimitrov G , Hance M , Tran K , Khouri H , Gill J , Utterback TR , Feldblyum TV , Wall JD , Voordouw G , Fraser CM
Ref : Nat Biotechnol , 22 :554 , 2004
Abstract : Desulfovibrio vulgaris Hildenborough is a model organism for studying the energy metabolism of sulfate-reducing bacteria (SRB) and for understanding the economic impacts of SRB, including biocorrosion of metal infrastructure and bioremediation of toxic metal ions. The 3,570,858 base pair (bp) genome sequence reveals a network of novel c-type cytochromes, connecting multiple periplasmic hydrogenases and formate dehydrogenases, as a key feature of its energy metabolism. The relative arrangement of genes encoding enzymes for energy transduction, together with inferred cellular location of the enzymes, provides a basis for proposing an expansion to the 'hydrogen-cycling' model for increasing energy efficiency in this bacterium. Plasmid-encoded functions include modification of cell surface components, nitrogen fixation and a type-III protein secretion system. This genome sequence represents a substantial step toward the elucidation of pathways for reduction (and bioremediation) of pollutants such as uranium and chromium and offers a new starting point for defining this organism's complex anaerobic respiration.
ESTHER : Heidelberg_2004_Nat.Biotechnol_22_554
PubMedSearch : Heidelberg_2004_Nat.Biotechnol_22_554
PubMedID: 15077118
Gene_locus related to this paper: desvh-q72b36 , desvh-q72ed6 , desvh-q728i3 , desvh-q729w4 , desvh-q72b15

Title : Structural flexibility in the Burkholderia mallei genome - Nierman_2004_Proc.Natl.Acad.Sci.U.S.A_101_14246
Author(s) : Nierman WC , DeShazer D , Kim HS , Tettelin H , Nelson KE , Feldblyum T , Ulrich RL , Ronning CM , Brinkac LM , Daugherty SC , Davidsen TD , DeBoy RT , Dimitrov G , Dodson RJ , Durkin AS , Gwinn ML , Haft DH , Khouri H , Kolonay JF , Madupu R , Mohammoud Y , Nelson WC , Radune D , Romero CM , Sarria S , Selengut J , Shamblin C , Sullivan SA , White O , Yu Y , Zafar N , Zhou L , Fraser CM
Ref : Proc Natl Acad Sci U S A , 101 :14246 , 2004
Abstract : The complete genome sequence of Burkholderia mallei ATCC 23344 provides insight into this highly infectious bacterium's pathogenicity and evolutionary history. B. mallei, the etiologic agent of glanders, has come under renewed scientific investigation as a result of recent concerns about its past and potential future use as a biological weapon. Genome analysis identified a number of putative virulence factors whose function was supported by comparative genome hybridization and expression profiling of the bacterium in hamster liver in vivo. The genome contains numerous insertion sequence elements that have mediated extensive deletions and rearrangements of the genome relative to Burkholderia pseudomallei. The genome also contains a vast number (>12,000) of simple sequence repeats. Variation in simple sequence repeats in key genes can provide a mechanism for generating antigenic variation that may account for the mammalian host's inability to mount a durable adaptive immune response to a B. mallei infection.
ESTHER : Nierman_2004_Proc.Natl.Acad.Sci.U.S.A_101_14246
PubMedSearch : Nierman_2004_Proc.Natl.Acad.Sci.U.S.A_101_14246
PubMedID: 15377793
Gene_locus related to this paper: burma-a5j5w8 , burma-a5tj72 , burma-a5tq93 , burma-metx , burma-q62a61 , burma-q62ar2.1 , burma-q62ar2.2 , burma-q62ax8 , burma-q62b60 , burma-q62b79 , burma-q62bh9 , burma-q62bl4 , burma-q62bl7 , burma-q62c00 , burma-q62cg5 , burma-q62d41 , burma-q62d56 , burma-q62d83 , burma-q62dg2 , burma-q62du7 , burma-q62e67 , burma-q62eb8 , burma-q62ed8 , burma-q62f28 , burma-q62fx7 , burma-q62g26 , burma-q62gx9 , burma-q62gy2 , burma-q62hq2 , burma-q62i62 , burma-q62ib8 , burma-q62ie8 , burma-q62j07 , burma-q62j15 , burma-q62jn5 , burma-q62jy7 , burma-q62kb7 , burma-q62kg0 , burma-q62kh9 , burma-q62lp7 , burma-q62m40 , burma-q62mc3 , burma-q62mf4 , burma-q62mq7 , burma-q629m1 , burma-q629p4 , burma-q629u0 , burps-q3v7s4 , burps-hboh

Title : The complete genome sequence of the Arabidopsis and tomato pathogen Pseudomonas syringae pv. tomato DC3000 - Buell_2003_Proc.Natl.Acad.Sci.U.S.A_100_10181
Author(s) : Buell CR , Joardar V , Lindeberg M , Selengut J , Paulsen IT , Gwinn ML , Dodson RJ , DeBoy RT , Durkin AS , Kolonay JF , Madupu R , Daugherty S , Brinkac L , Beanan MJ , Haft DH , Nelson WC , Davidsen T , Zafar N , Zhou L , Liu J , Yuan Q , Khouri H , Fedorova N , Tran B , Russell D , Berry K , Utterback T , Van Aken SE , Feldblyum TV , D'Ascenzo M , Deng WL , Ramos AR , Alfano JR , Cartinhour S , Chatterjee AK , Delaney TP , Lazarowitz SG , Martin GB , Schneider DJ , Tang X , Bender CL , White O , Fraser CM , Collmer A
Ref : Proc Natl Acad Sci U S A , 100 :10181 , 2003
Abstract : We report the complete genome sequence of the model bacterial pathogen Pseudomonas syringae pathovar tomato DC3000 (DC3000), which is pathogenic on tomato and Arabidopsis thaliana. The DC3000 genome (6.5 megabases) contains a circular chromosome and two plasmids, which collectively encode 5,763 ORFs. We identified 298 established and putative virulence genes, including several clusters of genes encoding 31 confirmed and 19 predicted type III secretion system effector proteins. Many of the virulence genes were members of paralogous families and also were proximal to mobile elements, which collectively comprise 7% of the DC3000 genome. The bacterium possesses a large repertoire of transporters for the acquisition of nutrients, particularly sugars, as well as genes implicated in attachment to plant surfaces. Over 12% of the genes are dedicated to regulation, which may reflect the need for rapid adaptation to the diverse environments encountered during epiphytic growth and pathogenesis. Comparative analyses confirmed a high degree of similarity with two sequenced pseudomonads, Pseudomonas putida and Pseudomonas aeruginosa, yet revealed 1,159 genes unique to DC3000, of which 811 lack a known function.
ESTHER : Buell_2003_Proc.Natl.Acad.Sci.U.S.A_100_10181
PubMedSearch : Buell_2003_Proc.Natl.Acad.Sci.U.S.A_100_10181
PubMedID: 12928499
Gene_locus related to this paper: pse14-q48ia0 , psesm-IRP1 , psesm-METX , psesm-q87y20 , psesm-q88a39 , psesm-q881b4 , psesm-q889k3 , psesy-BIOH , psesy-CFA7 , psesy-CFA9 , psesy-CMAT , psesy-ESTA , psesy-IRP4 , psesy-PHAB , psesy-PHAC , psesy-PHAG1 , psesy-PHAG2 , psesy-PIP , psesy-PSPTO0162 , psesy-PSPTO0421 , psesy-PSPTO0508 , psesy-PSPTO0675 , psesy-PSPTO0715 , psesy-PSPTO1154 , psesy-PSPTO1504 , psesy-PSPTO1559 , psesy-PSPTO1580 , psesy-PSPTO1604 , psesy-PSPTO1677 , psesy-PSPTO1766 , psesy-PSPTO1863 , psesy-PSPTO2042 , psesy-PSPTO2134 , psesy-PSPTO2150 , psesy-PSPTO2209 , psesy-PSPTO2217 , psesy-PSPTO2218 , psesy-PSPTO2293 , psesy-PSPTO2495 , psesy-PSPTO2674 , psesy-PSPTO2830 , psesy-PSPTO3135 , psesy-PSPTO3138 , psesy-PSPTO3264 , psesy-PSPTO3282 , psesy-PSPTO3306 , psesy-PSPTO3485 , psesy-PSPTO3572 , psesy-PSPTO3911 , psesy-PSPTO4089 , psesy-PSPTO4178 , psesy-PSPTO4277 , psesy-PSPTO4430 , psesy-PSPTO4519 , psesy-PSPTO4540 , psesy-PSPTO4699 , psesy-PSPTO4708 , psesy-PSPTO4781 , psesy-PSPTO4843 , psesy-PSPTO4964 , psesy-PSPTO5218 , psesy-PSPTO5299 , psesy-PSPTO5448 , psesy-PSPTO5537 , psesy-SYLD , psesy-SYPC , psesy-SYRE , psesm-q87v84

Title : [Comparison of the toxic effect of methamidophos and acephate on acetylcholinesterase] - Zhou_2002_Zhonghua.Lao.Dong.Wei.Sheng.Zhi.Ye.Bing.Za.Zhi_20_405
Author(s) : Zhou L , Zhang Y , Shi N
Ref : Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi , 20 :405 , 2002
Abstract : OBJECTIVE: To explore the inhibitory effects of highly toxic organophosphorus compound and its substitute (methamidophos and acephate) on acetylcholinesterase (AChE) and their toxic mechanisms.
METHODS: Ellman method was used to measure AChE activity in vitro and vivo.
RESULTS: Acephate and methamidophos could directly inhibit AChE activities in human erythrocyte membrane and rat brain synatosomal membrane in dose- and time-dependent manners in vitro, and this effect was irreversible. The IC50 of acephate and methamidophos affecting human erythrocyte membrane and rat synatosomal membrane were approximately 10(-4) mol/L and 10(-5) mol/L respectively and the Ki were 10(2) mol.L-1.min-1 and 10(3) mol.L-1.min-1 respectively. In vivo, after rats being administered with them for 5 d, the inhibitory rate of AChE activities in blood were increased to 68.24% and 54.80% respectively. When rats being administrated with acephate, there was 31.68% of inhibition on the brain stem, but no significant inhibition in other brain region was noticed, while methamidophos had a strong inhibitory effect on the activity of AChE in all brain regions, especially the cerebellum and brain-stem(71.51% and 61.85% respectively). CONCLUSION: Acephate and methamidophos could directly inhibit the AChE activities in vitro, but the inhibition degree was different. In vivo, both could also inhibit AChE activities in blood. The difference in inhibition on brain regions may be one of the reason of various toxic effect of them.
ESTHER : Zhou_2002_Zhonghua.Lao.Dong.Wei.Sheng.Zhi.Ye.Bing.Za.Zhi_20_405
PubMedSearch : Zhou_2002_Zhonghua.Lao.Dong.Wei.Sheng.Zhi.Ye.Bing.Za.Zhi_20_405
PubMedID: 14694584

Title : Chromosome 2 sequence of the human malaria parasite Plasmodium falciparum - Gardner_1998_Science_282_1126
Author(s) : Gardner MJ , Tettelin H , Carucci DJ , Cummings LM , Aravind L , Koonin EV , Shallom S , Mason T , Yu K , Fujii C , Pederson J , Shen K , Jing J , Aston C , Lai Z , Schwartz DC , Pertea M , Salzberg S , Zhou L , Sutton GG , Clayton R , White O , Smith HO , Fraser CM , Hoffman SL
Ref : Science , 282 :1126 , 1998
Abstract : Chromosome 2 of Plasmodium falciparum was sequenced; this sequence contains 947,103 base pairs and encodes 210 predicted genes. In comparison with the Saccharomyces cerevisiae genome, chromosome 2 has a lower gene density, introns are more frequent, and proteins are markedly enriched in nonglobular domains. A family of surface proteins, rifins, that may play a role in antigenic variation was identified. The complete sequencing of chromosome 2 has shown that sequencing of the A+T-rich P. falciparum genome is technically feasible.
ESTHER : Gardner_1998_Science_282_1126
PubMedSearch : Gardner_1998_Science_282_1126
PubMedID: 9804551

Title : The complete genome sequence of the hyperthermophilic, sulphate-reducing archaeon Archaeoglobus fulgidus - Klenk_1997_Nature_390_364
Author(s) : Klenk HP , Clayton RA , Tomb JF , White O , Nelson KE , Ketchum KA , Dodson RJ , Gwinn M , Hickey EK , Peterson JD , Richardson DL , Kerlavage AR , Graham DE , Kyrpides NC , Fleischmann RD , Quackenbush J , Lee NH , Sutton GG , Gill S , Kirkness EF , Dougherty BA , McKenney K , Adams MD , Loftus B , Peterson S , Reich CI , McNeil LK , Badger JH , Glodek A , Zhou L , Overbeek R , Gocayne JD , Weidman JF , McDonald L , Utterback T , Cotton MD , Spriggs T , Artiach P , Kaine BP , Sykes SM , Sadow PW , D'Andrea KP , Bowman C , Fujii C , Garland SA , Mason TM , Olsen GJ , Fraser CM , Smith HO , Woese CR , Venter JC
Ref : Nature , 390 :364 , 1997
Abstract : Archaeoglobus fulgidus is the first sulphur-metabolizing organism to have its genome sequence determined. Its genome of 2,178,400 base pairs contains 2,436 open reading frames (ORFs). The information processing systems and the biosynthetic pathways for essential components (nucleotides, amino acids and cofactors) have extensive correlation with their counterparts in the archaeon Methanococcus jannaschii. The genomes of these two Archaea indicate dramatic differences in the way these organisms sense their environment, perform regulatory and transport functions, and gain energy. In contrast to M. jannaschii, A. fulgidus has fewer restriction-modification systems, and none of its genes appears to contain inteins. A quarter (651 ORFs) of the A. fulgidus genome encodes functionally uncharacterized yet conserved proteins, two-thirds of which are shared with M. jannaschii (428 ORFs). Another quarter of the genome encodes new proteins indicating substantial archaeal gene diversity.
ESTHER : Klenk_1997_Nature_390_364
PubMedSearch : Klenk_1997_Nature_390_364
PubMedID: 9389475
Gene_locus related to this paper: arcfu-AF0514 , arcfu-AF0675 , arcfu-AF1134 , arcfu-AF1563 , arcfu-AF1753 , arcfu-AF1763 , arcfu-est1 , arcfu-est2 , arcfu-est3 , arcfu-estea , arcfu-o28594 , arcfu-o29442 , arcfu-pcbd

Title : The complete genome sequence of the gastric pathogen Helicobacter pylori. - Tomb_1997_Nature_388_539
Author(s) : Tomb J-F , White O , Kerlavage AR , Clayton RA , Sutton GG , Fleischmann RD , Ketchum KA , Klenk H-P , Gill S , Dougherty BA , Nelson K , Quackenbush J , Zhou L , Kirkness EF , Peterson S , Loftus B , Richardson D , Dodson R , Khalak HG , Glodek A , McKenney K , FitzGerald LM , Lee N , Adams MD , Hickey EK , Berg DE , Gocayne JD , Utterback TR , Peterson JD , Kelley JM , Cotton MD , Weidman JM , Fujii C , Bowman C , Watthey L , Wallin E , Hayes WS , Borodovsky M , Karp PD , Smith HO , Fraser CM , Venter JC
Ref : Nature , 388 :539 , 1997
Abstract : Helicobacter pylori, strain 26695, has a circular genome of 1,667,867 base pairs and 1,590 predicted coding sequences. Sequence analysis indicates that H. pylori has well-developed systems for motility, for scavenging iron, and for DNA restriction and modification. Many putative adhesins, lipoproteins and other outer membrane proteins were identified, underscoring the potential complexity of host-pathogen interaction. Based on the large number of sequence-related genes encoding outer membrane proteins and the presence of homopolymeric tracts and dinucleotide repeats in coding sequences, H. pylori, like several other mucosal pathogens, probably uses recombination and slipped-strand mispairing within repeats as mechanisms for antigenic variation and adaptive evolution. Consistent with its restricted niche, H. pylori has a few regulatory networks, and a limited metabolic repertoire and biosynthetic capacity. Its survival in acid conditions depends, in part, on its ability to establish a positive inside-membrane potential in low pH.
ESTHER : Tomb_1997_Nature_388_539
PubMedSearch : Tomb_1997_Nature_388_539
PubMedID: 9252185
Gene_locus related to this paper: helpy-HP0739 , helpy-o25061