Luo Z

References (39)

Title : A Long-Acting Lyotropic Liquid Crystalline Implant Promotes the Drainage of Macromolecules by Brain-Related Lymphatic System in Treating Aged Alzheimer's Disease - Shan_2024_ACS.Nano__
Author(s) : Shan X , Lu Y , Luo Z , Zhao X , Pang M , Yin H , Guo X , Zhou H , Zhang J , Huang J , Shi Y , Lou J , Luo L , You J
Ref : ACS Nano , : , 2024
Abstract : Numerous evidence has demonstrated that the brain is not an immune-privileged organ but possesses a whole set of lymphatic transport system, which facilitates the drainage of harmful waste from brains to maintain cerebral homeostasis. However, as individuals age, the shrinkage and dysfunction of meningeal and deep cervical lymphatic networks lead to reduced waste outflow and elevated neurotoxic molecules deposition, further inducing aging-associated cognitive decline, which act as one of the pathological mechanisms of Alzheimer's disease. Consequently, recovering the function of meningeal and deep cervical lymph node (dCLNs) networks (as an important part of the brain waste removal system (BWRS)) of aged brains might be a feasible strategy. Herein we showed that the drug brain-entering efficiency was highly related to administration routes (oral, subcutaneous, or dCLN delivery). Besides, by injecting a long-acting lyotropic liquid crystalline implant encapsulating cilostazol (an FDA-approved selective PDE-3 inhibitor) and donepezil hydrochloride (a commonly used symptomatic relief agent to inhibit acetylcholinesterase for Alzheimer's disease) near the deep cervical lymph nodes of aged mice (about 20 months), an increase of lymphatic vessel coverage in the nodes and meninges was observed, along with accelerated drainage of macromolecules from brains. Compared with daily oral delivery of cilostazol and donepezil hydrochloride, a single administered dual drugs-loaded long-acting implants releasing for more than one month not only elevated drug concentrations in brains, improved the clearing efficiency of brain macromolecules, reduced Abeta accumulation, enhanced cognitive functions of the aged mice, but improved patient compliance as well, which provided a clinically accessible therapeutic strategy toward aged Alzheimer's diseases.
ESTHER : Shan_2024_ACS.Nano__
PubMedSearch : Shan_2024_ACS.Nano__
PubMedID: 38517764

Title : Next-Generation Neonicotinoid: The Impact of Cycloxaprid on the Crustacean Decapod Penaeus vannamei - Luo_2024_Chemosphere__142150
Author(s) : Luo Z , Lin ZY , Li ZF , Fu ZQ , Han FL , Li EC
Ref : Chemosphere , :142150 , 2024
Abstract : Cycloxaprid, a new neonicotinoid pesticide, poses ecological risks, particularly in aquatic environments, due to its unique action and environmental dispersal. This study investigated the ecotoxicological effects of various concentrations of cycloxaprid on Penaeus vannamei over 28 days. High cycloxaprid levels significantly altered shrimp physiology, as shown by changes in the hepatosomatic index and fattening. Indicators of oxidative stress, such as increased serum hemocyanin, respiratory burst, and nitric oxide, as well as decreased phenol oxidase activity, were observed. Additionally, elevated activities of lactate dehydrogenase, succinate dehydrogenase, and isocitrate dehydrogenase indicated disrupted energy metabolism in the hepatopancreas. Notably, analyses of the nervous system revealed marked disturbances in neural signaling, as evidenced by elevated acetylcholine, octopamine, and acetylcholinesterase levels. Transcriptomic analysis highlighted significant effects on gene expression and metabolic processes in the hepatopancreas and nervous system. This study demonstrated that cycloxaprid disrupts neural signaling and oxidative balance in P. vannamei, potentially affecting its growth, and provides key insights into its biochemical and transcriptomic toxicity in aquatic systems.
ESTHER : Luo_2024_Chemosphere__142150
PubMedSearch : Luo_2024_Chemosphere__142150
PubMedID: 38679174

Title : Complete genome sequencing of Hortaea werneckii M-3 for identifying polyester polyurethane degrading enzymes - Ling_2024_Mar.Genomics_75_101111
Author(s) : Ling M , Zhang K , Hu J , Huang X , Fan G , Grossart HP , Luo Z
Ref : Mar Genomics , 75 :101111 , 2024
Abstract : Hortaea werneckii M-3, a black yeast isolated from the marine sediment of the West Pacific, can utilize polyester polyurethane (PU, Impranil DLN) as a sole carbon source. Here, we present the complete genome of Hortaea werneckii M-3 with the focus on PU degradation enzymes. The total genome size is 38,167,921 bp, consisting of 186 contigs with a N50 length of 651,266 bp and a GC content of 53.06%. Genome annotation analysis predicts a total of 13,462 coding genes, which include 99 tRNAs and 105 rRNAs. Some genes encoding PU degrading enzymes including cutinase and urease are identified in this genome. The genome analysis of Hortaea werneckii M-3 will be helpful for further understanding the degradation mechanism of polyester PU by marine yeasts.
ESTHER : Ling_2024_Mar.Genomics_75_101111
PubMedSearch : Ling_2024_Mar.Genomics_75_101111
PubMedID: 38735674

Title : Computational design of highly efficient thermostable MHET hydrolases and dual enzyme system for PET recycling - Zhang_2023_Commun.Biol_6_1135
Author(s) : Zhang J , Wang H , Luo Z , Yang Z , Zhang Z , Wang P , Li M , Zhang Y , Feng Y , Lu D , Zhu Y
Ref : Commun Biol , 6 :1135 , 2023
Abstract : Recently developed enzymes for the depolymerization of polyethylene terephthalate (PET) such as FAST-PETase and LCC-ICCG are inhibited by the intermediate PET product mono(2-hydroxyethyl) terephthalate (MHET). Consequently, the conversion of PET enzymatically into its constituent monomers terephthalic acid (TPA) and ethylene glycol (EG) is inefficient. In this study, a protein scaffold (1TQH) corresponding to a thermophilic carboxylesterase (Est30) was selected from the structural database and redesigned in silico. Among designs, a double variant KL-MHETase (I171K/G130L) with a similar protein melting temperature (67.58 degreesC) to that of the PET hydrolase FAST-PETase (67.80 degreesC) exhibited a 67-fold higher activity for MHET hydrolysis than FAST-PETase. A fused dual enzyme system comprising KL-MHETase and FAST-PETase exhibited a 2.6-fold faster PET depolymerization rate than FAST-PETase alone. Synergy increased the yield of TPA by 1.64 fold, and its purity in the released aromatic products reached 99.5%. In large reaction systems with 100 g/L substrate concentrations, the dual enzyme system KL36F achieved over 90% PET depolymerization into monomers, demonstrating its potential applicability in the industrial recycling of PET plastics. Therefore, a dual enzyme system can greatly reduce the reaction and separation cost for sustainable enzymatic PET recycling.
ESTHER : Zhang_2023_Commun.Biol_6_1135
PubMedSearch : Zhang_2023_Commun.Biol_6_1135
PubMedID: 37945666
Gene_locus related to this paper: geost-est30

Title : Nickel Single-Atom Catalyst-Mediated Efficient Redox Cycle Enables Self-Checking Photoelectrochemical Biosensing with Dual Photocurrent Readouts - Tan_2023_ACS.Sens__
Author(s) : Tan R , Qin Y , Liu M , Wang H , Li J , Luo Z , Hu L , Gu W , Zhu C
Ref : ACS Sens , : , 2023
Abstract : Developing a self-checking photoelectrochemical biosensor with dual photocurrent signals could efficiently eliminate false-positive or false-negative signals. Herein, a novel biosensor with dual photocurrent responses was established for the detection of acetylcholinesterase activity. To achieve photocurrent polarity-switchable behavior, the iodide/tri-iodide redox couple was innovatively introduced to simultaneously consume the photoexcited electrons and holes, which circumvents the inconvenience caused by the addition of different hole- and electron-trapping agents in the electrolyte. Importantly, benefiting from the high catalytic activity, the enhanced photoelectric responsivity can be realized after decorating the counter electrode with nickel single-atom catalysts, which promotes a more efficient iodide/tri-iodide redox reaction under low applied voltages. It is envisioned that the proposed photocurrent polarity switching system offers new routes to sensitive and reliable biosensing.
ESTHER : Tan_2023_ACS.Sens__
PubMedSearch : Tan_2023_ACS.Sens__
PubMedID: 36624088

Title : Biodegradation of polyester polyurethane by the marine fungus Cladosporium halotolerans 6UPA1 - Zhang_2022_J.Hazard.Mater_437_129406
Author(s) : Zhang K , Hu J , Yang S , Xu W , Wang Z , Zhuang P , Grossart HP , Luo Z
Ref : J Hazard Mater , 437 :129406 , 2022
Abstract : Lack of degradability and the accumulation of polymeric wastes increase the risk for the health of the environment. Recently, recycling of polymeric waste materials becomes increasingly important as raw materials for polymer synthesis are in short supply due to the rise in price and supply chain disruptions. As an important polymer, polyurethane (PU) is widely used in modern life, therefore, PU biodegradation is desirable to avoid its accumulation in the environment. In this study, we isolated a fungal strain Cladosporium halotolerans from the deep sea which can grow in mineral medium with a polyester PU (Impranil DLN) as a sole carbon source. Further, we demonstrate that it can degrade up to 80% of Impranil PU after 3 days of incubation at 28 degC by breaking the carbonyl groups (1732 cm(-1)) and C-N-H bonds (1532 cm(-1) and 1247 cm(-1)) as confirmed by Fourier-transform infrared (FTIR) spectroscopy analysis. Gas chromatography-mass spectrometry (GC-MS) analysis revealed polyols and alkanes as PU degradation intermediates, indicating the hydrolysis of ester and urethane bonds. Esterase and urease activities were detected in 7 days-old cultures with PU as a carbon source. Transcriptome analysis showed a number of extracellular protein genes coding for enzymes such as cutinase, lipase, peroxidase and hydrophobic surface binding proteins A (HsbA) were expressed when cultivated on Impranil PU. The yeast two-hybrid assay revealed that the hydrophobic surface binding protein ChHsbA1 directly interacts with inducible esterases, ChLip1 (lipase) and ChCut1 (cutinase). Further, the KEGG pathway for "fatty acid degradation" was significantly enriched in Impranil PU inducible genes, indicating that the fungus may use the degradation intermediates to generate energy via this pathway. Taken together, our data indicates secretion of both esterase and hydrophobic surface binding proteins by C. halotolerans plays an important role in Impranil PU absorption and subsequent degradation. Our study provides a mechanistic insight into Impranil PU biodegradation by deep sea fungi and provides the basis for future development of biotechnological PU recycling.
ESTHER : Zhang_2022_J.Hazard.Mater_437_129406
PubMedSearch : Zhang_2022_J.Hazard.Mater_437_129406
PubMedID: 35753302

Title : Neuroligin-mediated neurodevelopmental defects are induced by mitochondrial dysfunction and prevented by lutein in C. elegans - Maglioni_2022_Nat.Commun_13_2620
Author(s) : Maglioni S , Schiavi A , Melcher M , Brinkmann V , Luo Z , Laromaine A , Raimundo N , Meyer JN , Distelmaier F , Ventura N
Ref : Nat Commun , 13 :2620 , 2022
Abstract : Complex-I-deficiency represents the most frequent pathogenetic cause of human mitochondriopathies. Therapeutic options for these neurodevelopmental life-threating disorders do not exist, partly due to the scarcity of appropriate model systems to study them. Caenorhabditis elegans is a genetically tractable model organism widely used to investigate neuronal pathologies. Here, we generate C. elegans models for mitochondriopathies and show that depletion of complex I subunits recapitulates biochemical, cellular and neurodevelopmental aspects of the human diseases. We exploit two models, nuo-5/NDUFS1- and lpd-5/NDUFS4-depleted animals, for a suppressor screening that identifies lutein for its ability to rescue animals' neurodevelopmental deficits. We uncover overexpression of synaptic neuroligin as an evolutionarily conserved consequence of mitochondrial dysfunction, which we find to mediate an early cholinergic defect in C. elegans. We show lutein exerts its beneficial effects by restoring neuroligin expression independently from its antioxidant activity, thus pointing to a possible novel pathogenetic target for the human disease.
ESTHER : Maglioni_2022_Nat.Commun_13_2620
PubMedSearch : Maglioni_2022_Nat.Commun_13_2620
PubMedID: 35551180

Title : Associations of PNPLA3 rs738409 Polymorphism with Plasma Lipid Levels: A Systematic Review and Meta-Analysis - Luo_2022_Horm.Metab.Res_54_686
Author(s) : Luo Z , Liu Y , Li H , Zhou Y , Peng Y , Lin X , Fang Y , Wan J , Wei B
Ref : Hormone & Metabolic Research , 54 :686 , 2022
Abstract : Accumulating evidence has shown that the rs738409 polymorphism of patatin-like phospholipase domain-containing 3 (PNPLA3) is associated with non-alcoholic fatty liver disease (NAFLD). Since NAFLD has been reported to be associated with lipid metabolism, this study is conducted to explore whether the rs738409 polymorphism of PNPLA3 was associated with lipid levels. By searching PubMed and the Cochrane database from May 31, 2020, to June 30, 2021. Sixty-three studies (81 003 subjects) were included for the analysis. The consistent findings for the associations of rs738409 polymorphism with lipid levels were the significantly decreased triglycerides (TG) (SMD=-0.04, 95% CI=-0.07 to -0.01, p=0.02) and total cholesterol (TC) (SMD=-0.03, 95% CI=-0.05 to -0.01, p<0.01) levels. Subgroup analysis indicated that the associations of rs738409 polymorphism with TG and TC levels were stronger in Caucasians, obesity patients, and adult subjects than in Asians, T2DM patients, and children subjects. The rs738409 polymorphism of PNPLA3 was associated with lower TG and TC levels in Caucasians, obese and adult subjects, which may contribute to the reduced coronary artery disease (CAD) risk between PNPLA3 rs738409 polymorphism and CAD.
ESTHER : Luo_2022_Horm.Metab.Res_54_686
PubMedSearch : Luo_2022_Horm.Metab.Res_54_686
PubMedID: 36206762

Title : Iridium Single-Atomic Site Catalysts with Superior Oxygen Reduction Reaction Activity for Sensitive Monitoring of Organophosphorus Pesticides - Luo_2021_Anal.Chem__
Author(s) : Luo X , Luo Z , Wei X , Jiao L , Fang Q , Wang H , Wang J , Gu W , Hu L , Zhu C
Ref : Analytical Chemistry , : , 2021
Abstract : Tremendous efforts have been made in developing single-atomic site catalysts (SASCs) for oxygen reduction reaction (ORR), which is regarded as a pivotal cornerstone in electrochemical energy conversion. However, SASCs for ORR have not been explored for electrochemical sensing. Herein, a template-sacrificed strategy is reported for the synthesis of atomically dispersed Ir SASCs, serving as a sensing platform to detect organophosphorus pesticides (OPs) with high sensitivity and selectivity. Owing to abundant Ir single-atom active sites, Ir SASCs show excellent ORR activity and stability in a neutral medium. It is found that the ORR activity of Ir SASCs can be inhibited by thiocholine, which is the hydrolysate of acetylthiocholine. After being integrated with acetylcholinesterase (AChE), the AChE-Ir SASC-based electrochemical sensor is established and shows a superior sensitivity, which shows a wide detection range of 0.5-500 ng mL(-1) with a low detection limit of 0.17 ng mL(-1) for OPs. This work exhibits a broad application prospect of ORR for sensitive detection of biomolecules.
ESTHER : Luo_2021_Anal.Chem__
PubMedSearch : Luo_2021_Anal.Chem__
PubMedID: 34969242

Title : Adipose triglyceride lipase promotes the proliferation of colorectal cancer cells via enhancing the lipolytic pathway - Yin_2021_J.Cell.Mol.Med__
Author(s) : Yin H , Li W , Mo L , Deng S , Lin W , Ma C , Luo Z , Luo C , Hong H
Ref : J Cell Mol Med , : , 2021
Abstract : Abnormal lipid metabolism is the sign of tumour cells. Previous researches have revealed that the lipolytic pathway may contribute to the progression of colorectal cancer (CRC). However, adipose triglyceride lipase (ATGL) role in CRC cells remains unclear. Here, we find that elevated ATGL positively correlates with CRC clinical stages and negatively associates with overall survival. Overexpression of ATGL significantly promotes CRC cell proliferation, while knockdown of ATGL inhibits the proliferation and promotes the apoptosis of CRC cells in vitro. Moreover, in vivo experiments, ATGL promotes the growth of CRC cells. Mechanistically, ATGL enhances the carcinogenic function of CRC cells via promoting sphingolipid metabolism and CoA biosynthesis pathway-related gene levels by degrading triglycerides, which provides adequate nutrition for the progression of CRC. Our researches clarify for the first time that ATGL is a novel oncogene in CRC and may provide an important prognostic factor and therapeutic target for CRC.
ESTHER : Yin_2021_J.Cell.Mol.Med__
PubMedSearch : Yin_2021_J.Cell.Mol.Med__
PubMedID: 33621408

Title : MiR-188-3p and miR-133b Suppress Cell Proliferation in Human Hepatocellular Carcinoma via Post-Transcriptional Suppression of NDRG1 - Luo_2021_Technol.Cancer.Res.Treat_20_15330338211033074
Author(s) : Luo Z , Fan Y , Liu X , Liu S , Kong X , Ding Z , Li Y , Wei L
Ref : Technol Cancer Research Treat , 20 :15330338211033074 , 2021
Abstract : BACKGROUND: Previous studies reported that N-myc downstream-regulated gene 1 (NDRG1) was upregulated in various cancer tissues and decreased expression of miR-188-3p and miR-133b could suppress cell proliferation, metastasis, and invasion and induce apoptosis of cancer cells. However, the molecular mechanism of NRDG1 involved in hepatocellular carcinoma (HCC) tumorigenesis is still unknown. METHODS: The expressions of miR-188-3p, miR-133b, and NRDG1 in HCC tissues and cells were quantified by qRT-PCR and Western blot. MTT assay and transwell invasion assay were performed to evaluate cell growth and cell migration, respectively. Luciferase reporter assay were performed to determine whether miR-188-3p and miR-133b could directly bind to NRDG1 in HCC cells. RESULTS: The results showed that NRDG1 was upregulated and these 2 microRNAs were downregulated in HCC tissues. NRDG1 was negatively correlated with miR-188-3p and miR-133b in HCC tissues. MiR-188-3p and miR-133b were demonstrated to directly bind to 3'UTR of NRDG1 and inhibit its expression. Upregulation of miR-188-3p and miR-133b reduced NRDG1 expression in hepatocellular carcinoma cell lines, which consequently inhibited cell growth and cell migration. CONCLUSIONS: Our finding suggested that miR-188-3p and miR-133b exert a suppressive effect on hepatocellular carcinoma proliferation, invasion, and migration through downregulation of NDRG1.
ESTHER : Luo_2021_Technol.Cancer.Res.Treat_20_15330338211033074
PubMedSearch : Luo_2021_Technol.Cancer.Res.Treat_20_15330338211033074
PubMedID: 34355586
Gene_locus related to this paper: human-NDRG1

Title : miR-4454 up-regulated by HPV16 E6\/E7 promotes invasion and migration by targeting ABHD2\/NUDT21 in cervical cancer - Wang_2020_Biosci.Rep_40_
Author(s) : Wang H , Hu H , Luo Z , Liu S , Wu W , Zhu M , Wang J , Liu Y , Lu Z
Ref : Bioscience Reports , 40 : , 2020
Abstract : The abnormal expression of HPV16 E6/E7 activates oncogenes and/or inactivates tumor suppressor genes, resulting in the selective growth and malignant transformation of cancer cells. miR-4454 was selected by sequencing due to its abnormal high expression in HPV16 E6/E7 positive CaSki cell compared with HPV16 E6/E7 negative C33A cell. Overexpression of miR-4454 enhances cervical cancer cell invasion and migration. ABHD2 and NUDT21 are identified as a target gene of miR-4454.The effects of ABHD2 and NUDT21 on migration and invasion of CaSki and C33A cells were determined. The dual luciferase and RT-qPCR assays confirmed that miR-4454 might regulate its targets ABHD2 and NUDT21 to promote the proliferation, invasion and migration, whereas, inhibit the apoptosis in CaSki and C33A cells.
ESTHER : Wang_2020_Biosci.Rep_40_
PubMedSearch : Wang_2020_Biosci.Rep_40_
PubMedID: 32816024

Title : Pickering Emulsion-Based Microreactors for Size-Selective Interfacial Enzymatic Catalysis - Lei_2020_Front.Bioeng.Biotechnol_8_950
Author(s) : Lei J , Qi L , Luo Z
Ref : Front Bioeng Biotechnol , 8 :950 , 2020
Abstract : In this study, we have developed a mild and effective method to prepare a metal-organic framework (MOF)-based microcapsule by the self-assembly of pre-synthesized zeolite imidazolate framework-8 (ZIF-8) nanoparticles at the oil-water interface combined with deposition of a dense ZIF-8 coating outside the capsule. By introducing the enzyme Candida antarctica lipase B (CalB) directly into the stabilizer ZIF-8 or the water phase of Pickering emulsion during the preparation process, we achieved that the enzyme was immobilized within the shell (CalB@ZIF-8@cap) or in the cavity (ZIF-8@cap-CalB) of the microcapsules, respectively. The resulting CalB-loaded microcapsules were robust and had a core-shell structure proved by scanning electron microscopy. Meanwhile, Fourier transform infrared spectroscopy was conducted to confirm the encapsulation of enzymes in the microcapsules and their position in the microcapsules was confirmed by fluorescence microscopy. Furthermore, through the comparison of transesterification reactions between a pair of small substrates and a pair of larger ones, the two types of CalB-loaded microcapsules showed great catalytic activity, stability and size selectivity, and the catalytic activity of CalB@ZIF-8@cap was slightly higher than that of ZIF-8@cap-CalB. Importantly, due to the large size of the microcapsules, the catalyst could be separated from the reaction system by sedimentation, thereby reducing the energy consumption for separation. These kinds of multifunctional MOF-enzyme composites may open up new opportunities for the biocatalysis and microreactor.
ESTHER : Lei_2020_Front.Bioeng.Biotechnol_8_950
PubMedSearch : Lei_2020_Front.Bioeng.Biotechnol_8_950
PubMedID: 32974304

Title : Flexibility of the petunia strigolactone receptor DAD2 promotes its interaction with signaling partners - Lee_2020_J.Biol.Chem_295_4181
Author(s) : Lee HW , Sharma P , Janssen BJ , Drummond RSM , Luo Z , Hamiaux C , Collier T , Allison JR , Newcomb RD , Snowden KC
Ref : Journal of Biological Chemistry , 295 :4181 , 2020
Abstract : Strigolactones (SLs) are terpenoid-derived plant hormones that regulate various developmental processes, particularly shoot branching, root development, and leaf senescence. The SL receptor has an unusual mode of action. Upon binding SL, it hydrolyses the hormone, and then covalently binds one of the hydrolytic products. These initial events enable the SL receptor DAD2 (in petunia) to interact with the F-box protein PhMAX2A of the Skp-Cullin-F-box (SCF) complex and/or a repressor of SL signaling, PhD53A. However, it remains unclear how binding and hydrolysis structurally alters the SL receptor to enable its engagement with signaling partners. Here, we used mutagenesis to alter DAD2 and affect SL hydrolysis or DAD2's ability to interact with its signaling partners. We identified three DAD2 variants whose hydrolytic activity had been separated from the receptor's interactions with PhMAX2A or PhD53A. Two variants, DAD2(N242I) and DAD2(F135A), having substitutions in the core alpha/beta hydrolase fold domain and the hairpin, exhibited hormone-independent interactions with PhMAX2A and PhD53A respectively. Conversely, the DAD2(D166A) variant could not interact with PhMAX2A in the presence of SL, but its interaction with PhD53A remained unaffected. Structural analyses of DAD2N242I and DAD2D166A revealed only small differences compared with the structure of the wild-type receptor. Results of molecular dynamics simulations of the DAD2(N242I) structure suggested that increased flexibility is a likely cause for its SL-independent interaction with PhMAX2A. Our results suggest that PhMAX2A and PhD53A have distinct binding sites on the SL receptor and that its flexibility is a major determinant of its interactions with these two downstream regulators.
ESTHER : Lee_2020_J.Biol.Chem_295_4181
PubMedSearch : Lee_2020_J.Biol.Chem_295_4181
PubMedID: 32071083
Gene_locus related to this paper: pethy-dad2

Title : Chemical synthesis and characterization of a new quinazolinedione competitive antagonist for strigolactone receptors with an unexpected binding mode - Hamiaux_2019_Biochem.J_476_1843
Author(s) : Hamiaux C , Larsen L , Lee HW , Luo Z , Sharma P , Hawkins BC , Perry NB , Snowden KC
Ref : Biochemical Journal , 476 :1843 , 2019
Abstract : Strigolactones (SLs) are multifunctional plant hormones regulating essential physiological processes affecting growth and development. In vascular plants, SLs are recognized by alpha/beta hydrolase-fold proteins from the D14/DAD2 (Dwarf14/Decreased Apical Dominance 2) family in the initial step of the signaling pathway. We have previously discovered that N-phenylanthranilic acid derivatives (e.g. tolfenamic acid) are potent antagonists of SL receptors, prompting us to design quinazolinone and quinazolinedione derivatives (QADs and QADDs, respectively) as second-generation antagonists. Initial in silico docking studies suggested that these compounds would bind to DAD2, the petunia SL receptor, with higher affinity than the first-generation compounds. However, only one of the QADs/QADDs tested in in vitro assays acted as a competitive antagonist of SL receptors, with reduced affinity and potency compared with its N-phenylanthranilic acid 'parent'. X-ray crystal structure analysis revealed that the binding mode of the active QADD inside DAD2's cavity was not that predicted in silico, highlighting a novel inhibition mechanism for SL receptors. Despite a approximately 10-fold difference in potency in vitro, the QADD and tolfenamic acid had comparable activity in planta, suggesting that the QADD compensates for lower potency with increased bioavailability. Altogether, our results establish this QADD as a novel lead compound towards the development of potent and bioavailable antagonists of SL receptors.
ESTHER : Hamiaux_2019_Biochem.J_476_1843
PubMedSearch : Hamiaux_2019_Biochem.J_476_1843
PubMedID: 31186286
Gene_locus related to this paper: pethy-dad2

Title : Bioactive polycyclic polyprenylated acylphloroglucinols from Hypericum perforatum - Guo_2018_Org.Biomol.Chem_16_8130
Author(s) : Guo Y , Zhang N , Sun W , Duan X , Zhang Q , Zhou Q , Chen C , Zhu H , Luo Z , Liu J , Li XN , Xue Y , Zhang Y
Ref : Org Biomol Chem , 16 :8130 , 2018
Abstract : Fifteen new polycyclic polyprenylated acylphloroglucinols (PPAPs), hyperforatones A-O (1-15), along with 3 structurally related analogues (16-18), were isolated from the stems and leaves of Hypericum perforatum. Their structures and absolute configurations were established by a combination of NMR spectroscopic analyses, experimental and calculated electronic circular dichroism (ECD), modified Mosher's methods, Rh2(OCOCF3)4- and [Mo2(OAc)4]-induced ECD, X-ray crystallography, and the assistance of quantum chemical predictions (QCP) of 13C NMR chemical shifts. Compound 5 was found to be the first PPAP decorated by a rare 2,2,4,4,5-(pentamethyltetrahydrofuran-3-yl)methanol moiety and an oxepane ring. Furthermore, the isolates were screened for their acetylcholinesterase (AChE) and beta-site amyloid precursor protein cleaving enzyme 1 (BACE1) inhibitory activities. Compounds 5, 10, 11, and 15 showed desirable AChE inhibitory activities (IC50 6.9-9.2 muM) and simultaneously inhibited BACE1 (at a concentration of 5 muM) with inhibition rates of 50.3%, 34.3%, 47.2%, and 34.6%, respectively. Interestingly, compound 5 showed the most balanced inhibitory activities against both AChE and BACE1 of all the tested compounds, which means that 5 could serve as the first valuable dual-targeted PPAP for the treatment of Alzheimer's disease. Preliminary molecular docking studies of 5 with BACE1 and AChE were also performed.
ESTHER : Guo_2018_Org.Biomol.Chem_16_8130
PubMedSearch : Guo_2018_Org.Biomol.Chem_16_8130
PubMedID: 30334059

Title : Complex role of titanium dioxide nanoparticles in the trophic transfer of arsenic from Nannochloropsis maritima to Artemia salina nauplii - Yang_2018_Aquat.Toxicol_198_231
Author(s) : Yang F , Zeng L , Luo Z , Wang Z , Huang F , Wang Q , Drobne D , Yan C
Ref : Aquat Toxicol , 198 :231 , 2018
Abstract : Increasing concern has been focused on the potential risks associated with the trophic transfer to aquatic organisms of ambient contaminants in the presence of titanium dioxide nanoparticles (nano-TiO2). This study investigated the influence of nano-TiO2 on the trophic transfer of arsenic (As) from the microalgae Nannochloropsis maritima to the brine shrimp Artemia salina nauplii. We found that nano-TiO2 could significantly facilitate As sorption on N. maritima within an exposure period of 24h, and this sorption subsequently led to higher As trophic transfer from the algae to A. salina according to trophic transfer factors (TTFAs+nano-TiO2>TTFAs). However, after 48h of depuration, the retention of As in A. salina fed As-nano-TiO2-contaminated algae was even lower than that in A. salina fed As-contaminated algae at the same exposure concentrations. This result indicates that the increased food chain transfer of As in the presence of nano-TiO2 can be explained by adsorption of As onto nano-TiO2 in contaminated food (algae), but the bioavailability of As in A. salina is reduced after the introduction of nanoparticles. Although the stress enzyme activities of superoxide dismutase (SOD) and acetylcholinesterase (AChE) in A. salina at a lower As concentration treatment in the presence of nano-TiO2 were not significantly changed, they increased with higher exposure concentrations of As with or without nano-TiO2. Our study highlighted the complex role of nanomaterials in the transfer of ambient contaminants via trophic chains and the potential of nano-TiO2 to reduce the bioavailability of As via trophic transfer to saltwater zooplankton.
ESTHER : Yang_2018_Aquat.Toxicol_198_231
PubMedSearch : Yang_2018_Aquat.Toxicol_198_231
PubMedID: 29558708

Title : Inhibition of strigolactone receptors by N-phenylanthranilic acid derivatives: Structural and functional insights - Hamiaux_2018_J.Biol.Chem_293_6530
Author(s) : Hamiaux C , Drummond RSM , Luo Z , Lee HW , Sharma P , Janssen BJ , Perry NB , Denny WA , Snowden KC
Ref : Journal of Biological Chemistry , 293 :6530 , 2018
Abstract : The strigolactone (SL) family of plant hormones regulates a broad range of physiological processes affecting plant growth and development and also plays essential roles in controlling interactions with parasitic weeds and symbiotic fungi. Recent progress elucidating details of SL biosynthesis, signaling, and transport offers many opportunities for discovering new plant-growth regulators via chemical interference. Here, using high-throughput screening and downstream biochemical assays, we identified N-phenylanthranilic acid derivatives as potent inhibitors of the SL receptors from petunia (DAD2), rice (OsD14), and Arabidopsis (AtD14). Crystal structures of DAD2 and OsD14 in complex with inhibitors further provided detailed insights into the inhibition mechanism, and in silico modeling of 19 other plant strigolactone receptors suggested that these compounds are active across a large range of plant species. Altogether, these results provide chemical tools for investigating SL signaling and further define a framework for structure-based approaches to design and validate optimized inhibitors of SL receptors for specific plant targets.
ESTHER : Hamiaux_2018_J.Biol.Chem_293_6530
PubMedSearch : Hamiaux_2018_J.Biol.Chem_293_6530
PubMedID: 29523686
Gene_locus related to this paper: pethy-dad2

Title : A manually annotated Actinidia chinensis var. chinensis (kiwifruit) genome highlights the challenges associated with draft genomes and gene prediction in plants - Pilkington_2018_BMC.Genomics_19_257
Author(s) : Pilkington SM , Crowhurst R , Hilario E , Nardozza S , Fraser L , Peng Y , Gunaseelan K , Simpson R , Tahir J , Deroles SC , Templeton K , Luo Z , Davy M , Cheng C , McNeilage M , Scaglione D , Liu Y , Zhang Q , Datson P , De Silva N , Gardiner SE , Bassett H , Chagne D , McCallum J , Dzierzon H , Deng C , Wang YY , Barron L , Manako K , Bowen J , Foster TM , Erridge ZA , Tiffin H , Waite CN , Davies KM , Grierson EP , Laing WA , Kirk R , Chen X , Wood M , Montefiori M , Brummell DA , Schwinn KE , Catanach A , Fullerton C , Li D , Meiyalaghan S , Nieuwenhuizen N , Read N , Prakash R , Hunter D , Zhang H , McKenzie M , Knabel M , Harris A , Allan AC , Gleave A , Chen A , Janssen BJ , Plunkett B , Ampomah-Dwamena C , Voogd C , Leif D , Lafferty D , Souleyre EJF , Varkonyi-Gasic E , Gambi F , Hanley J , Yao JL , Cheung J , David KM , Warren B , Marsh K , Snowden KC , Lin-Wang K , Brian L , Martinez-Sanchez M , Wang M , Ileperuma N , Macnee N , Campin R , McAtee P , Drummond RSM , Espley RV , Ireland HS , Wu R , Atkinson RG , Karunairetnam S , Bulley S , Chunkath S , Hanley Z , Storey R , Thrimawithana AH , Thomson S , David C , Testolin R , Huang H , Hellens RP , Schaffer RJ
Ref : BMC Genomics , 19 :257 , 2018
Abstract : BACKGROUND: Most published genome sequences are drafts, and most are dominated by computational gene prediction. Draft genomes typically incorporate considerable sequence data that are not assigned to chromosomes, and predicted genes without quality confidence measures. The current Actinidia chinensis (kiwifruit) 'Hongyang' draft genome has 164 Mb of sequences unassigned to pseudo-chromosomes, and omissions have been identified in the gene models. RESULTS: A second genome of an A. chinensis (genotype Red5) was fully sequenced. This new sequence resulted in a 554.0 Mb assembly with all but 6 Mb assigned to pseudo-chromosomes. Pseudo-chromosomal comparisons showed a considerable number of translocation events have occurred following a whole genome duplication (WGD) event some consistent with centromeric Robertsonian-like translocations. RNA sequencing data from 12 tissues and ab initio analysis informed a genome-wide manual annotation, using the WebApollo tool. In total, 33,044 gene loci represented by 33,123 isoforms were identified, named and tagged for quality of evidential support. Of these 3114 (9.4%) were identical to a protein within 'Hongyang' The Kiwifruit Information Resource (KIR v2). Some proportion of the differences will be varietal polymorphisms. However, as most computationally predicted Red5 models required manual re-annotation this proportion is expected to be small. The quality of the new gene models was tested by fully sequencing 550 cloned 'Hort16A' cDNAs and comparing with the predicted protein models for Red5 and both the original 'Hongyang' assembly and the revised annotation from KIR v2. Only 48.9% and 63.5% of the cDNAs had a match with 90% identity or better to the original and revised 'Hongyang' annotation, respectively, compared with 90.9% to the Red5 models. CONCLUSIONS: Our study highlights the need to take a cautious approach to draft genomes and computationally predicted genes. Our use of the manual annotation tool WebApollo facilitated manual checking and correction of gene models enabling improvement of computational prediction. This utility was especially relevant for certain types of gene families such as the EXPANSIN like genes. Finally, this high quality gene set will supply the kiwifruit and general plant community with a new tool for genomics and other comparative analysis.
ESTHER : Pilkington_2018_BMC.Genomics_19_257
PubMedSearch : Pilkington_2018_BMC.Genomics_19_257
PubMedID: 29661190
Gene_locus related to this paper: actde-CXE3 , actde-CXE5 , actch-a0a2r6p9v4 , actch-a0a2r6phk8 , actch-a0a2r6pty2 , actch-q0zpu6 , actcc-a0a2r6q553 , actcc-a0a2r6quq2 , actcc-a0a2r6q2m9 , actcc-a0a2r6q2n7 , actcc-a0a2r6ru97 , actcc-a0a2r6r3e8 , actcc-a0a2r6qy24 , actcc-a0a2r6pzy5 , actcc-a0a2r6p5n3 , actcc-a0a2r6qdp0 , actcc-a0a2r6qgs9

Title : Asperversins A and B, Two Novel Meroterpenoids with an Unusual 5\/6\/6\/6 Ring from the Marine-Derived Fungus Aspergillus versicolor - Li_2018_Mar.Drugs_16_
Author(s) : Li H , Sun W , Deng M , Qi C , Chen C , Zhu H , Luo Z , Wang J , Xue Y , Zhang Y
Ref : Mar Drugs , 16 : , 2018
Abstract : Asperversins A (1) and B (2), two novel meroterpenoids featuring an uncommon 5/6/6/6 ring system, along with five new analogues (3(-)7) and a known compound asperdemin (8), were obtained from the marine-derived fungus Aspergillus versicolor. Their structures and absolute configurations were confirmed by extensive spectroscopic analyses, single-crystal X-ray diffraction studies, and electronic circular dichroism (ECD) calculation. All new compounds were tested for their acetylcholinesterase enzyme (AChE) inhibitory activities and cytotoxic activities, of which compound 7 displayed moderate inhibitory activity against the AChE with an IC50 value of 13.6 μM.
ESTHER : Li_2018_Mar.Drugs_16_
PubMedSearch : Li_2018_Mar.Drugs_16_
PubMedID: 29882867

Title : Waterborne Zn influenced Zn uptake and lipid metabolism in two intestinal regions of juvenile goby Synechogobius hasta - Ling_2018_Ecotoxicol.Environ.Saf_148_578
Author(s) : Ling SC , Luo Z , Chen GH , Zhang DG , Liu X
Ref : Ecotoxicology & Environmental Safety , 148 :578 , 2018
Abstract : The present study explored the influence of Zn addition in the water on Zn transport and lipid metabolism of two intestinal regions in goby Synechogobius hasta. Zn contents in water were 0.004 (control), 0.181 and 0.361mg Zn L(-1), respectively. The experiment lasted for 28 days. TG and Zn contents, mRNA contents of genes of Zn transport and lipid metabolism, and enzyme activity from anterior and mid-intestine tissues were analyzed. In anterior intestine, Zn addition in the water increased Zn contents, and mRNA concentrations of ZIP4, ZIP5, ATGL, PPARalpha, ZNF202 and KLF7, decreased TG contents, 6PGD and G6PD activities, and mRNA contents of 6PGD, G6PD, FAS, PPARgamma, ICDH and KLF4. In mid-intestine tissue, the highest Zn and TG contents were observed for 0.18mg Zn/l group, in parallel with the highest expressions of ZnT1, ZIP4, ZIP5, 6PGD, FAS, ICDH, PPARgamma, PPARalpha, ZNF202, KLF4 and KLF7, and with the highest FAS, 6PGD and G6PD activities. Thus, in the anterior intestine, Zn addition increased lipolysis and decreased lipogenesis, and accordingly reduced TG content. However, the highest mid-intestinal TG content in 0.18mg Zn/l group was due to the up-regulated lipogenesis. Although lipolysis was also increased, the incremental lipid synthesis was enough to compensate for lipid degradation, which led TG accumulation. Our results, for the first time, show an anterior/mid functional regionalization of the intestine in lipid metabolism and Zn transport of S. hasta following Zn exposure.
ESTHER : Ling_2018_Ecotoxicol.Environ.Saf_148_578
PubMedSearch : Ling_2018_Ecotoxicol.Environ.Saf_148_578
PubMedID: 29127820
Gene_locus related to this paper: 9gobi-a0a067xh99

Title : Tricyclic Polyprenylated Acylphloroglucinols from St John's Wort, Hypericum perforatum - Guo_2017_J.Nat.Prod_80_1493
Author(s) : Guo Y , Zhang N , Chen C , Huang J , Li XN , Liu J , Zhu H , Tong Q , Zhang J , Luo Z , Xue Y , Zhang Y
Ref : Journal of Natural Products , 80 :1493 , 2017
Abstract : The new polyprenylated acylphloroglucinol derivatives 1-15 and the known furohyperforin (16) were isolated from the stems and leaves of Hypericum perforatum. Their structures were determined by analyses of NMR and HRESIMS data. Their absolute configurations were elucidated by a combination of electronic circular dichroism (ECD) and Rh2(OCOCF3)4-induced ECD, as well as X-ray diffraction crystallography. The new hyperforatin F (9) contains a unique acetyl functionality at C-1 of the bicyclo[3.3.1]nonane core. Hyperforatins G (10) and H (11) are similarly the first examples of naturally occurring [3.3.1]-type polycyclic prenylated acylphloroglucinols possessing a carbonyl functionality at C-32. The compounds were tested for their acetylcholinesterase (AChE) inhibitory activities and cytotoxic activities against a panel of human tumor cell lines. Compounds 3, 5, 6, 8, and 9 exerted moderate inhibitory activities (IC50 3.98-9.13 muM) against AChE.
ESTHER : Guo_2017_J.Nat.Prod_80_1493
PubMedSearch : Guo_2017_J.Nat.Prod_80_1493
PubMedID: 28445039

Title : Galanthamine, Plicamine, and Secoplicamine Alkaloids from Zephyranthes candida and Their Anti-acetylcholinesterase and Anti-inflammatory Activities - Zhan_2016_J.Nat.Prod_79_760
Author(s) : Zhan G , Zhou J , Liu R , Liu T , Guo G , Wang J , Xiang M , Xue Y , Luo Z , Zhang Y , Yao G
Ref : Journal of Natural Products , 79 :760 , 2016
Abstract : Sixteen new alkaloids belonging to the galanthamine (1-6), plicamine (7-14), and secoplicamine (15 and 16) classes, together with eight known analogues (17-24), were isolated from Zephyranthes candida. The structures of 1-16 were determined by extensive spectroscopic analyses, and the absolute configurations of 1, 2, 7, 8, and 17 were confirmed by single-crystal X-ray diffraction analysis. The orientation of 3-OCH3 in N-methyl-5,6-dihydroplicane (22) was revised. Alkaloids 3, 12-14, and 18-21 exhibited anti-acetylcholinesterase activities with IC50 values ranging from 0.48 to 168.7 muM. Compounds 10-12, 14, and 16 showed in vitro anti-inflammatory activities with IC50 values ranging from 7.50 to 23.55 muM.
ESTHER : Zhan_2016_J.Nat.Prod_79_760
PubMedSearch : Zhan_2016_J.Nat.Prod_79_760
PubMedID: 26913788

Title : Synthesis and biological evaluation of a new series of ebselen derivatives as glutathione peroxidase (GPx) mimics and cholinesterase inhibitors against Alzheimer's disease - Luo_2014_Bioorg.Med.Chem_22_1355
Author(s) : Luo Z , Liang L , Sheng J , Pang Y , Li J , Huang L , Li X
Ref : Bioorganic & Medicinal Chemistry , 22 :1355 , 2014
Abstract : A series of ebselen derivatives were designed, synthesised and evaluated as inhibitors of cholinesterases (ChEs) and glutathione peroxidase (GPx) mimics. Most of the compounds were found to be potent against AChEs and BCHE, compounds 5e and 5i, proved to be the most potent against AChE with IC(5)(0) values of 0.76 and 0.46 muM, respectively. Among these hybrids, most of the compounds were found to be good GPx mimics compare with ebselen. The selected compounds 5e and 5i were also used to determine the catalytic parameters and in vitro hydrogen peroxide scavenging activity. The results indicate that compounds 5e and 5i may be excellent multifunctional agents for the treatment of AD.
ESTHER : Luo_2014_Bioorg.Med.Chem_22_1355
PubMedSearch : Luo_2014_Bioorg.Med.Chem_22_1355
PubMedID: 24461494

Title : Hormone-sensitive lipase in yellow catfish Pelteobagrus fulvidraco: Molecular characterization, mRNA tissue expression and transcriptional regulation by leptin in vivo and in vitro - Chen_2014_Gen.Comp.Endocrinol_206_130
Author(s) : Chen QL , Luo Z , Song YF , Wu K , Huang C , Pan YX , Zhu QL
Ref : General & Comparative Endocrinology , 206 :130 , 2014
Abstract : Hormone-sensitive lipase (hsl) plays a pivotal role in regulation of lipolysis in mammals, but information is very scarce about its gene structure and function in fish. In this study, two distinct hsl cDNAs, designated hsl1 and hsl2, were firstly isolated and characterized from yellow catfish Pelteobagrus fulvidraco. The validated cDNAs encoding for hsl1 and hsl2 were 2739 and 2629bp in length, encoding peptides of 679 and 813 amino acid residues, respectively, and shared 57.7% amino acid identity. The phylogenetic analysis revealed that hsl1 and hsl2 derived from paralogous genes that might have arisen during a teleost-specific genome duplication event. Both hsl mRNAs were expressed in a wide range of tissues, but the abundance of each hsl mRNA showed the tissue- and developmental stage-dependent expression patterns. Intraperitoneal injection in vivo and incubation in vitro of recombinant human leptin (rb-hLEP) stimulated the mRNA expression of hsl2, but not hsl1, in the liver and hepatocytes of P. fulvidraco, respectively, suggesting that two hsl isoforms might serve different roles in lipid metabolism. To our knowledge, for the first time, the present study provides evidence that two hsl mRNAs are differentially expressed with and among tissues during different developmental stages and also differentially regulated by leptin both in vivo and in vitro, which serves to increase our understanding on hsl physiological function in fish.
ESTHER : Chen_2014_Gen.Comp.Endocrinol_206_130
PubMedSearch : Chen_2014_Gen.Comp.Endocrinol_206_130
PubMedID: 25016050

Title : Molecular cloning and tissue mRNA levels of 15 genes involved in lipid metabolism in Synechogobius hasta - Chen_2014_Eur.J.Lipid.Sci.Technol_117_471
Author(s) : Chen QL , Luo Z , Huang C , Zheng JL , Pan YX , Song YF , Hu W
Ref : Eur J Lipid Sci Technol , 117 :471 , 2014
Abstract : The regulation of lipid metabolism is complex, and is currently an extensive area of research. In this study, the partial sequences of 15 genes involved in lipid metabolism were cloned from the liver of Synechogobius hasta, including g6pd, 6pgd, me, icdh, fas, acc-alpha, acc-beta, lpl, atgl, hsla, hslb, cpt 1a, srebp-1, ppar-alpha, and ppar-gamma. Phylogenetic analysis further identified these genes, and confirmed the classification and evolutionary status of S. hasta. mRNA of all genes was detected in the liver, spleen, muscle, gill, brain, intestine, and heart, but at varying levels. Practical applications: Excessive fat accumulation and disordered lipid metabolism have become serious problems in the sustainable and healthy development of aquaculture. The present study facilitates studies on the regulation of lipid metabolism at the molecular level in fish. The tissue expression profiles of genes increase our understanding of their physiological roles.
ESTHER : Chen_2014_Eur.J.Lipid.Sci.Technol_117_471
PubMedSearch : Chen_2014_Eur.J.Lipid.Sci.Technol_117_471
PubMedID:
Gene_locus related to this paper: 9gobi-a0a067xh99

Title : Synthesis and Evaluation of Multi-Target-Directed Ligands against Alzheimer's Disease Based on the Fusion of Donepezil and Ebselen - Luo_2013_J.Med.Chem_56_9089
Author(s) : Luo Z , Sheng J , Sun Y , Lu C , Yan J , Liu A , Luo HB , Huang L , Li X
Ref : Journal of Medicinal Chemistry , 56 :9089 , 2013
Abstract : A novel series of compounds obtained by fusing the cholinesterase inhibitor donepezil and the antioxidant ebselen were designed as multi-target-directed ligands against Alzheimer's disease. An in vitro assay showed that some of these molecules did not exhibit highly potent cholinesterase inhibitory activity but did have various other ebselen-related pharmacological effects. Among the molecules, compound 7d, one of the most potent acetylcholinesterase inhibitors (IC50 values of 0.042 muM for Electrophorus electricus acetylcholinesterase and 0.097 muM for human acetylcholinesterase), was found to be a strong butyrylcholinesterase inhibitor (IC50 = 1.586 muM), to possess rapid H2O2 and peroxynitrite scavenging activity and glutathione peroxidase-like activity (nu0 = 123.5 muM min(-1)), and to be a substrate of mammalian TrxR. A toxicity test in mice showed no acute toxicity at doses of up to 2000 mg/kg. According to an in vitro blood-brain barrier model, 7d is able to penetrate the central nervous system.
ESTHER : Luo_2013_J.Med.Chem_56_9089
PubMedSearch : Luo_2013_J.Med.Chem_56_9089
PubMedID: 24160297

Title : Effects of waterborne acephate exposure on antioxidant responses and acetylcholinesterase activities in Synechogobius hasta - Liu_2013_Environ.Toxicol_28_42
Author(s) : Liu XJ , Luo Z , Zheng JL , Xiong BX
Ref : Environ Toxicol , 28 :42 , 2013
Abstract : The present study was conducted to determine the 24, 48, 72, and 96-h median lethal concentration (LC50) of acephate and investigate the antioxidant response and acetylcholinesterase (AChE) activities in liver, gill, and spleen of Synechogobius hasta exposed to 0 (control), 5, and 10 mg/L acephate, at the fixed interval time of 24, 48, 72, and 96 h, respectively. LC50 value was 60.83 mg/L at 24 h, 51.36 mg/L at 48 h, 47.07 mg/L at 72 h and 40.13 mg/L at 96 h, respectively. Dismutase (SOD), catalase (CAT), AChE activities, and malondialdehyde (MDA) levels in these tissues for the control remained stable over the exposure period. However, for the two tested groups, tissue-, dose-, and time-dependent responses of these parameters were observed in S. hasta. In general, hepatic SOD and CAT activities were significantly inhibited at 24 h, activated, and increased at 48 h, but again inhibited from 48 to 96 h in fish exposed to the two tested concentrations. Hepatic MDA levels of fish for the two tested concentration peaked at 48 h, significantly higher than the control. Hepatic AChE activity was inhibited at 24 h, peaked at 48 h, and then declined at 72 h for the two tested groups. For gills, the highest SOD and CAT activities for the two tested groups were observed at 48 h, higher than the control. AChE activities for the two tested groups were significantly inhibited at 24 h, but activated at 48 h. At 96 h, AChE activities among the treatments showed no significant differences. Gill MDA levels at 48 h for the tested groups were significantly higher than the control, but showed no significant differences at 24 and 72 h among the treatments. In spleen, SOD and CAT activities at 48 h for the two tested groups were significantly higher than those in the control, but at 96 h the vice versa was true. Spleenic AChE activities and MDA levels for the two tested groups were inhibited at 24 h, activated at 48 h, and then were again inhibited at 72 h. Based on these observations earlier, the results obtained in our study will have important toxicological implications for waterborne acephate pollution and, meantime, provide the basis for the effective risk assessment of acephate in water environment and appropriate safety recommendations for fish. (c) 2011 Wiley Periodicals, Inc. Environ Toxicol 2013.
ESTHER : Liu_2013_Environ.Toxicol_28_42
PubMedSearch : Liu_2013_Environ.Toxicol_28_42
PubMedID: 21462291

Title : Novel tacrine-ebselen hybrids with improved cholinesterase inhibitory, hydrogen peroxide and peroxynitrite scavenging activity - Mao_2013_Bioorg.Med.Chem.Lett_23_6737
Author(s) : Mao F , Chen J , Zhou Q , Luo Z , Huang L , Li X
Ref : Bioorganic & Medicinal Chemistry Lett , 23 :6737 , 2013
Abstract : A series of tacrine-ebselen hybrids were synthesised and evaluated as possible multifunctional anti-Alzheimer's disease (AD) agents. Compound 6i, which is tacrine linked with 5,6-dimethoxybenzo[d][1,2]selenazol-3(2H)-one by a six-carbon spacer, was the most potent acetylcholinesterase (AChE) and butylcholinesterase (BCHE) inhibitor, with IC50 values of 2.55 and 2.80nM, respectively. Furthermore, this compound demonstrated similar hydrogen peroxide and peroxynitrite scavenging activity as ebselen by horseradish peroxidase assay and peroxynitrite scavenging activity assay, indicating that this hybrid is a good multifunctional drug candidate for the treatment of AD.
ESTHER : Mao_2013_Bioorg.Med.Chem.Lett_23_6737
PubMedSearch : Mao_2013_Bioorg.Med.Chem.Lett_23_6737
PubMedID: 24220172

Title : Genome Sequencing of Ralstonia solanacearum FQY_4, Isolated from a Bacterial Wilt Nursery Used for Breeding Crop Resistance - Cao_2013_Genome.Announc_1_e00125
Author(s) : Cao Y , Tian B , Liu Y , Cai L , Wang H , Lu N , Wang M , Shang S , Luo Z , Shi J
Ref : Genome Announc , 1 : , 2013
Abstract : Ralstonia solanacearum strain FQY_4 was isolated from a bacterial wilt nursery, which is used for breeding crops for Ralstonia resistance in China. Here, we report the complete genome sequence of FQY_4 and its comparison with other published R. solanacearum genomes, especially with the strains GMI1000 and Y45 in the same group.
ESTHER : Cao_2013_Genome.Announc_1_e00125
PubMedSearch : Cao_2013_Genome.Announc_1_e00125
PubMedID: 23661471
Gene_locus related to this paper: ralso-PCAD

Title : Molecular cloning and expression pattern of 11 genes involved in lipid metabolism in yellow catfish Pelteobagrus fulvidraco - Zheng_2013_Gene_531_53
Author(s) : Zheng JL , Luo Z , Zhu QL , Tan XY , Chen QL , Sun LD , Hu W
Ref : Gene , 531 :53 , 2013
Abstract : 11 genes involved in lipid metabolism were cloned from liver of yellow catfish Pelteobagrus fulvidraco, including CPT 1A, CPT 1B, PPARalpha, PPARgamma, SREBP-1, G6PD, 6PGD, FAS, acetyl-CoA ACCa, ACCb, and LPL. Phylogenetic analysis further identified these genes, and confirmed the classification and evolutionary status of yellow catfish. mRNA of all eleven genes was present in liver, muscle, mesenteric adipose, ovary and heart, but at varying levels. The present study will facilitate further studies on the regulation of lipid metabolism at the molecular level for the fish species.
ESTHER : Zheng_2013_Gene_531_53
PubMedSearch : Zheng_2013_Gene_531_53
PubMedID: 23988502
Gene_locus related to this paper: ictpu-a0a2d0rtv8

Title : Inhibition of cholinesterase activity and amyloid aggregation by berberine-phenyl-benzoheterocyclic and tacrine-phenyl-benzoheterocyclic hybrids - Huang_2012_Bioorg.Med.Chem_20_3038
Author(s) : Huang L , Su T , Shan W , Luo Z , Sun Y , He F , Li X
Ref : Bioorganic & Medicinal Chemistry , 20 :3038 , 2012
Abstract : A series of berberine-phenyl-benzoheterocyclic (26-29) and tacrine-phenyl-benzoheterocyclic hybrids (44-46) were synthesised and evaluated as multifunctional anti-Alzheimer's disease agents. Compound 44b, tacrine linked with phenyl-benzothiazole by 3-carbon spacers, was the most potent AChE inhibitor with an IC(50) value of 0.017 muM. This compound demonstrated similar Abeta aggregation inhibitory activity with cucurmin (51.8% vs 52.1% at 20 muM, respectively), indicating that this hybrid is an excellent multifunctional drug candidate for AD.
ESTHER : Huang_2012_Bioorg.Med.Chem_20_3038
PubMedSearch : Huang_2012_Bioorg.Med.Chem_20_3038
PubMedID: 22472046

Title : O-Hydroxyl- or o-amino benzylamine-tacrine hybrids: multifunctional biometals chelators, antioxidants, and inhibitors of cholinesterase activity and amyloid-beta aggregation - Mao_2012_Bioorg.Med.Chem_20_5884
Author(s) : Mao F , Huang L , Luo Z , Liu A , Lu C , Xie Z , Li X
Ref : Bioorganic & Medicinal Chemistry , 20 :5884 , 2012
Abstract : In an effort to identify novel multifunctional drug candidates for the treatment of Alzheimer's disease (AD), a series of hybrid molecules were synthesised by reacting N-(aminoalkyl)tacrine with salicylic aldehyde or derivatives of 2-aminobenzaldehyde. These compounds were then evaluated as multifunctional anti-Alzheimer's disease agents. All of the hybrids are potential biometal chelators, and in addition, most of them were better antioxidants and inhibitors of cholinesterases and amyloid-beta (Abeta) aggregation than the lead compound tacrine. Compound 7c has the potential to be a candidate for AD therapy: it is a much better inhibitor of acetylcholinesterase (AChE) than tacrine (IC(50): 0.55 nM vs 109 nM), has good biometal chelation ability, is able to inhibit Abeta aggregation and has moderate antioxidant activity (1.22 Trolox equivalents).
ESTHER : Mao_2012_Bioorg.Med.Chem_20_5884
PubMedSearch : Mao_2012_Bioorg.Med.Chem_20_5884
PubMedID: 22944335

Title : Genome sequencing and comparative transcriptomics of the model entomopathogenic fungi Metarhizium anisopliae and M. acridum - Gao_2011_PLoS.Genet_7_e1001264
Author(s) : Gao Q , Jin K , Ying SH , Zhang Y , Xiao G , Shang Y , Duan Z , Hu X , Xie XQ , Zhou G , Peng G , Luo Z , Huang W , Wang B , Fang W , Wang S , Zhong Y , Ma LJ , St Leger RJ , Zhao GP , Pei Y , Feng MG , Xia Y , Wang C
Ref : PLoS Genet , 7 :e1001264 , 2011
Abstract : Metarhizium spp. are being used as environmentally friendly alternatives to chemical insecticides, as model systems for studying insect-fungus interactions, and as a resource of genes for biotechnology. We present a comparative analysis of the genome sequences of the broad-spectrum insect pathogen Metarhizium anisopliae and the acridid-specific M. acridum. Whole-genome analyses indicate that the genome structures of these two species are highly syntenic and suggest that the genus Metarhizium evolved from plant endophytes or pathogens. Both M. anisopliae and M. acridum have a strikingly larger proportion of genes encoding secreted proteins than other fungi, while ~30% of these have no functionally characterized homologs, suggesting hitherto unsuspected interactions between fungal pathogens and insects. The analysis of transposase genes provided evidence of repeat-induced point mutations occurring in M. acridum but not in M. anisopliae. With the help of pathogen-host interaction gene database, ~16% of Metarhizium genes were identified that are similar to experimentally verified genes involved in pathogenicity in other fungi, particularly plant pathogens. However, relative to M. acridum, M. anisopliae has evolved with many expanded gene families of proteases, chitinases, cytochrome P450s, polyketide synthases, and nonribosomal peptide synthetases for cuticle-degradation, detoxification, and toxin biosynthesis that may facilitate its ability to adapt to heterogeneous environments. Transcriptional analysis of both fungi during early infection processes provided further insights into the genes and pathways involved in infectivity and specificity. Of particular note, M. acridum transcribed distinct G-protein coupled receptors on cuticles from locusts (the natural hosts) and cockroaches, whereas M. anisopliae transcribed the same receptor on both hosts. This study will facilitate the identification of virulence genes and the development of improved biocontrol strains with customized properties.
ESTHER : Gao_2011_PLoS.Genet_7_e1001264
PubMedSearch : Gao_2011_PLoS.Genet_7_e1001264
PubMedID: 21253567
Gene_locus related to this paper: metaq-dapb , metaq-e9dr02 , metaq-e9dr46 , metaq-e9dx32 , metaq-e9dy00 , metaq-e9e6i5 , metaq-e9e332 , metaq-e9e873 , metaq-e9eaq4 , metaq-e9ebs3 , metaq-e9ebt3 , metaq-e9edi2 , metaq-e9edr0 , metaq-e9ee29 , metaq-e9eej3 , metaq-e9ef60 , metaq-e9ef98 , metaq-e9efc1 , metaq-e9eg97 , metaq-e9egz7 , metaq-kex1 , metar-dapb , metar-e9ej81 , metar-e9ejw6 , metar-e9ek06 , metar-e9eka7 , metar-e9eku9 , metar-e9em68 , metar-e9emd0 , metar-e9enf9 , metar-e9eny8 , metar-e9ep20 , metar-e9ep60 , metar-e9eqh0 , metar-e9etb2 , metar-e9etp6 , metar-e9euh9 , metar-e9ey62 , metar-e9eyx6 , metar-e9ezk2 , metar-e9f3f2 , metar-e9f3j3 , metar-e9f3l3 , metar-e9f3z5 , metar-e9f6q5 , metar-e9f6t6 , metar-e9f7y7 , metar-e9f9h2 , metar-e9f029 , metar-e9f205 , metar-e9f721 , metar-e9fa63 , metar-e9fab1 , metar-e9fas3 , metar-e9fbn5 , metar-e9fbt1 , metar-e9fd34 , metaq-e9eej8 , metaq-e9dx35 , metar-e9f3e9 , metar-e9f0w8 , metan-a0a086npb7 , 9hypo-a0a014p983 , metan-a0a086nhe0 , 9hypo-a0a0a1v7e9 , metaq-e9e0y0 , metan-a0a0d9pev7 , metaq-e9edt7 , metra-e9ewg3 , metra-pks2 , metaf-pks1 , metaq-pks2 , metaq-e9e9z0

Title : Benzenediol-berberine hybrids: multifunctional agents for Alzheimer's disease - Jiang_2011_Bioorg.Med.Chem_19_7228
Author(s) : Jiang H , Wang X , Huang L , Luo Z , Su T , Ding K , Li X
Ref : Bioorganic & Medicinal Chemistry , 19 :7228 , 2011
Abstract : We designed and synthesized a series of hybrid molecules, in an effort to identify novel multifunctional drug candidates for Alzheimer's disease (AD), by reacting berberine with benzenediol, melatonin, and ferulic acid. The products were evaluated for: (i) the ability to inhibit multiple cholinesterases (ChEs); (ii) the capacity to prevent amyloid beta (Abeta) aggregation; and (iii) antioxidant activity. All of the derivatives were better antioxidants, and inhibited Abeta aggregation to a greater extent, than the lead compound, berberine. Two of the hybrids, in particular, have the potential to be excellent candidates for AD therapy: the berberine-pyrocatechol hybrid (compound 8) was a much better inhibitor of acetylcholinesterase (AChE) than unconjugated berberine (IC(50): 0.123 vs 0.374 muM); and the berberine-hydroquinone hybrid (compound 12) displayed high antioxidant activity, could inhibit AChE (IC(50) of 0.460 muM), and had the greatest ability to inhibit Abeta aggregation.
ESTHER : Jiang_2011_Bioorg.Med.Chem_19_7228
PubMedSearch : Jiang_2011_Bioorg.Med.Chem_19_7228
PubMedID: 22041172

Title : Berberine derivatives, with substituted amino groups linked at the 9-position, as inhibitors of acetylcholinesterase\/butyrylcholinesterase - Huang_2010_Bioorg.Med.Chem.Lett_20_6649
Author(s) : Huang L , Luo Z , He F , Shi A , Qin F , Li X
Ref : Bioorganic & Medicinal Chemistry Lett , 20 :6649 , 2010
Abstract : Berberine derivatives with substituted amino groups linked at the 9-position using different carbon spacers were designed, synthesized, and biologically evaluated as inhibitors of acetylcholinesterase. Compound 10b, with a cyclohexylamino group linked to berberine by a three carbon spacer, gave the most potent inhibitor activity with an IC(50) of 0.020 muM for AChE. Kinetic studies revealed mixed inhibition of AChE, and molecular modeling simulations of the AChE-inhibitor complex confirmed that compounds bound to both the catalytic active site and the peripheral anionic site.
ESTHER : Huang_2010_Bioorg.Med.Chem.Lett_20_6649
PubMedSearch : Huang_2010_Bioorg.Med.Chem.Lett_20_6649
PubMedID: 20880702

Title : Synthesis and biological evaluation of a new series of berberine derivatives as dual inhibitors of acetylcholinesterase and butyrylcholinesterase - Huang_2010_Bioorg.Med.Chem_18_4475
Author(s) : Huang L , Luo Z , He F , Lu J , Li X
Ref : Bioorganic & Medicinal Chemistry , 18 :4475 , 2010
Abstract : A series of novel berberine derivatives were designed, synthesized, and biologically evaluated as inhibitors of both acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). Among these derivatives, compound 48a, berberine linked with 3-methylpyridinium by a 2-carbon spacer, was found to be a potent inhibitor of AChE, with an IC(50) value of 0.048 microM and compound 40c, berberine linked with 2-thionaphthol by a 4-carbon spacer, acted as the most potent inhibitor for BuChE with an IC(50) value of 0.078 microM. Kinetic studies and molecular modeling simulations of the AChE-inhibitor complex indicated that a mixed-competitive binding mode existed for these berberine derivatives.
ESTHER : Huang_2010_Bioorg.Med.Chem_18_4475
PubMedSearch : Huang_2010_Bioorg.Med.Chem_18_4475
PubMedID: 20471843

Title : Signaling complexes for postsynaptic differentiation - Luo_2003_J.Neurocytol_32_697
Author(s) : Luo Z , Wang Q , Dobbins GC , Levy S , Xiong WC , Mei L
Ref : Journal of Neurocytology , 32 :697 , 2003
Abstract : The receptor tyrosine kinase MuSK is activated by agrin, an extracellular matrix protein believed to be utilized by motoneurons to regulate the formation or maintenance of the neuromuscular junction (NMJ). Recent studies have shed light on intracellular signaling mechanisms downstream of MuSK. Agrin enhances the activity of Rho GTPases and PAK, which is required for AChR clustering. Activation of these enzymes requires not only the kinase activity of MuSK, but also its interaction with proteins such as Dishevelled. These results suggest that MuSK may function as a scaffold tyrosine kinase that forms a multi-molecule complex for AChR clustering.
ESTHER : Luo_2003_J.Neurocytol_32_697
PubMedSearch : Luo_2003_J.Neurocytol_32_697
PubMedID: 15034262

Title : Fluorous Boc ((F)Boc) carbamates: new amine protecting groups for use in fluorous synthesis - Luo_2001_J.Org.Chem_66_4261
Author(s) : Luo Z , Williams J , Read RW , Curran DP
Ref : J Org Chem , 66 :4261 , 2001
Abstract : The first fluorous variants of the Boc (tert-butyloxycarbonyl) group have been prepared and tested for their suitability as nitrogen protecting groups. A group with two fluorous chains and an ethylene spacer, (RfCH2CH2)2(CH3)COC(O)-, was readily attached to a representative amine but was difficult to cleave. In contrast, groups with two fluorous chains and a propylene spacer, (RfCH2CH2CH2)2(CH3)COC(O)-, or one fluorous chain and an ethylene spacer, (RfCH2CH2)(CH3)2COC(O)-, were readily formed and cleaved. The fluorous alcohol component of the (F)Boc group can be removed by evaporation and can be recovered and reused. The utility of the new (F)Boc group (C8F17CH2CH2)(CH3)2COC(O)- was demonstrated in 16 and 96 compound library synthesis exercises. Separations can be achieved either by manual, parallel fluorous solid-phase extraction, or automated, serial fluorous chromatography. The results provide additional confirmation of the value of "light" fluorous synthesis techniques, and the new fluorous Boc groups expand the applicability of fluorous synthesis techniques to many classes of nitrogen-containing organic compounds.
ESTHER : Luo_2001_J.Org.Chem_66_4261
PubMedSearch : Luo_2001_J.Org.Chem_66_4261
PubMedID: 11397162