Wang B

References (97)

Title : Degradation and enhanced oil recovery potential of Alcanivorax borkumensis through production of bio-enzyme and bio-surfactant - Deng_2024_Bioresour.Technol_400_130690
Author(s) : Deng S , Wang B , Zhang H , Qu R , Sun S , You Q , She Y , Zhang F
Ref : Bioresour Technol , 400 :130690 , 2024
Abstract : Microbial enhanced oil recovery (EOR) has become the focus of oilfield research due to its low cost, environmental friendliness and sustainability. The degradation and EOR capacity of A. borkumensis through the production of bio-enzyme and bio-surfactant were first investigated in this study. The total protein concentration, acetylcholinesterase, esterase, lipase, alkane hydroxylase activity, surface tension, and emulsification index (EI) were determined at different culture times. The bio-surfactant was identified as glycolipid compound, and the yield was 2.6 +/- 0.2 g/L. The nC(12) and nC(13) of crude oil were completely degraded, and more than 40.0 % of nC(14)-nC(24) was degraded by by A. borkumensis. The results of the microscopic etching model displacement and core flooding experiments showed that emulsification was the main mechanism of EOR. A. borkumensis enhanced the recovery rate by 20.2 %. This study offers novel insights for the development of environmentally friendly and efficient oil fields.
ESTHER : Deng_2024_Bioresour.Technol_400_130690
PubMedSearch : Deng_2024_Bioresour.Technol_400_130690
PubMedID: 38614150

Title : Highly efficient expression of Rasamsonia emersonii lipase in Pichia pastoris: Characterization and gastrointestinal simulated digestion in vitro - Wang_2024_J.Sci.Food.Agric__
Author(s) : Wang B , Wang Y , Zhou X , Gao XD , Fujita M , Li Z
Ref : J Sci Food Agric , : , 2024
Abstract : BACKGROUND: Acidic lipases with high catalytic activities under acidic conditions have important application values in the food, feed and pharmaceutical industries. However, the availability of acidic lipases is still the main obstacle to their industrial applications. Although a novel acidic lipase Rasamsonia emersonii (LIPR) was heterologously expressed in Escherichia coli, the expression level was unsatisfactory. RESULTS: To achieve the high-efficiency expression and secretion of LIPR in Pichia pastoris GS115, the combinatorial optimization strategy was adopted including gene codon preference, signal peptide, molecular chaperone co-expression and disruption of vacuolar sorting receptor VPS10. The activity of the combinatorial optimization engineered strain in a shake flask reached 1480 U mL(-1) , which was 8.13 times of the P. pastoris GS115 parental strain. After high-density fermentation in a 5 L bioreactor, the highest enzyme activity reached as high as 11820 U mL(-1) . LIPR showed the highest activity at 40 degreesC and pH 4.0 in the presence of Ca(2+) ion. LIPR exhibited strong tolerance to methanol indicating its potential application in biodiesel biosynthesis. Moreover, the gastrointestinal digestion simulation results demonstrated that LIPR was tolerant to pepsin and trypsin, but its activity was inhibited by sodium taurodeoxycholate (NaTDC). CONCLUSION: This study provided an effective approach for the high expression of acidic lipase LIPR. LIPR was more appropriate for lipid digestion in the stomach than in intestine according to the gastrointestinal digestion simulation results. This article is protected by copyright. All rights reserved.
ESTHER : Wang_2024_J.Sci.Food.Agric__
PubMedSearch : Wang_2024_J.Sci.Food.Agric__
PubMedID: 38363126

Title : Structural and functional reorganization of inhibitory synapses by activity-dependent cleavage of neuroligin-2 - Xu_2024_Proc.Natl.Acad.Sci.U.S.A_121_e2314541121
Author(s) : Xu N , Cao R , Chen SY , Gou XZ , Wang B , Luo HM , Gao F , Tang AH
Ref : Proc Natl Acad Sci U S A , 121 :e2314541121 , 2024
Abstract : Recent evidence has demonstrated that the transsynaptic nanoscale organization of synaptic proteins plays a crucial role in regulating synaptic strength in excitatory synapses. However, the molecular mechanism underlying this transsynaptic nanostructure in inhibitory synapses still remains unclear and its impact on synapse function in physiological or pathological contexts has not been demonstrated. In this study, we utilized an engineered proteolysis technique to investigate the effects of acute cleavage of neuroligin-2 (NL2) on synaptic transmission. Our results show that the rapid cleavage of NL2 led to impaired synaptic transmission by reducing both neurotransmitter release probability and quantum size. These changes were attributed to the dispersion of RIM1/2 and GABA(A) receptors and a weakened spatial alignment between them at the subsynaptic scale, as observed through superresolution imaging and model simulations. Importantly, we found that endogenous NL2 undergoes rapid MMP9-dependent cleavage during epileptic activities, which further exacerbates the decrease in inhibitory transmission. Overall, our study demonstrates the significant impact of nanoscale structural reorganization on inhibitory transmission and unveils ongoing modulation of mature GABAergic synapses through active cleavage of NL2 in response to hyperactivity.
ESTHER : Xu_2024_Proc.Natl.Acad.Sci.U.S.A_121_e2314541121
PubMedSearch : Xu_2024_Proc.Natl.Acad.Sci.U.S.A_121_e2314541121
PubMedID: 38657049

Title : Visualization of production and remediation of acetaminophen-induced liver injury by a carboxylesterase-2 enzyme-activatable near-infrared fluorescent probe - Yang_2023_Talanta_269_125418
Author(s) : Yang B , Ding X , Zhang Z , Li J , Fan S , Lai J , Su R , Wang X , Wang B
Ref : Talanta , 269 :125418 , 2023
Abstract : Acetaminophen (APAP) overdose, also known as APAP poisoning, may directly result in hepatic injury, acute liver failure and even death. Nowadays, APAP-induced liver injury (AILI) has become an urgent public health issue in the developing world so the early accurate diagnosis and the revelation of underlying molecular mechanism of AILI are of great significance. As a major detoxifying organ, liver is responsible for metabolizing chemical substances, in which human carboxylesterase-2 (CES2) is present. Hence, we chose CES2 as an effective biomarker for evaluating AILI. By developing a CES2-activatable and water-soluble fluorescent probe PFQ-E with superior affinity (K(m) = 5.9 microM), great sensitivity (limit of detection = 1.05 ng/mL), near-infrared emission (655 nm) and large Stokes shift (135 nm), activity and distribution of CES2 in cells were determined or imaged effectively. More importantly, the APAP-induced hepatotoxicity and the underlying molecular mechanism of pathogenesis of AILI were investigated by measuring the "light-up" response of PFQ-E towards endogenous CES2 in vivo for the first time. Based on the superior performance of the probe PFQ-E for sensing CES2, we believe that it has broad potential in clinical diagnosis and therapy response evaluation of AILI.
ESTHER : Yang_2023_Talanta_269_125418
PubMedSearch : Yang_2023_Talanta_269_125418
PubMedID: 37988783

Title : An Individualized Nomogram for Predicting Mortality Risk of Septic Shock Patients During Hospitalization: A ten Years Retrospective Analysis - Wang_2023_Infect.Drug.Resist_16_6247
Author(s) : Wang M , Shi Y , Pan X , Wang B , Lu B , Ouyang J
Ref : Infect Drug Resist , 16 :6247 , 2023
Abstract : PURPOSE: We intend to develop a nomogram for predicting the mortality risk of hospitalized septic shock patients. PATIENTS AND METHODS: Data were collected from patients hospitalized with septic shock in Affiliated Dongyang Hospital of Wenzhou Medical University in China, over 10 years between January 2013 and January 2023. The eligible study participants were divided into modeling and validation groups. Factors independently related to the mortality in the modeling group were obtained by stepwise regression analysis. A logistic regression model and a nomogram were built. The model was evaluated based on the discrimination power (the area under the curve of the receiver operating characteristic, AUC), the calibration degree and decision curve analysis. In the validation group, the discrimination powers of the logistic regression model, the sequential organ failure assessment (SOFA) scoring model and machine learning model were compared. RESULTS: A total of 1253 patients, including 878 patients in the modeling group and 375 patients in the validation group, were included in this study. Age, respiratory failure, serum cholinesterase, lactic acid, blood phosphorus, blood magnesium, total bilirubin, and pH were independent risk factors related to the mortality risk of septic shock. The AUCs of the prediction model for the modeling and validation groups were 0.881 and 0.868, respectively. The models had a good calibration degree and clinical applicability. The AUC of the SOFA model for the validation population was 0.799, significantly lower than that of our model. The AUCs of the random forest and ensemble models were 0.865 and 0.863, respectively, comparable to that of our logistical prediction model. CONCLUSION: The model established in this study can effectively predict the mortality risk in patients hospitalized with septic shock. Thus, the model could be used clinically to determine the best therapy or management for patients with septic shock.
ESTHER : Wang_2023_Infect.Drug.Resist_16_6247
PubMedSearch : Wang_2023_Infect.Drug.Resist_16_6247
PubMedID: 37750174

Title : Enzymatic reaction modulated DNA assembly on graphitic carbon nitride nanosheets for sensitive fluorescence detection of acetylcholinesterase activity and inhibition - Chen_2023_Mikrochim.Acta_190_268
Author(s) : Chen T , Qin Y , Wang B , Lai R , Tan G , Liu JW
Ref : Mikrochim Acta , 190 :268 , 2023
Abstract : A novel fluorescent strategy has been developed by using an enzymatic reaction modulated DNA assembly on graphitic carbon nitride nanosheets (CNNS) for the detection of acetylcholinesterase (AChE) activity and its inhibitors. The two-dimensional and ultrathin-layer CNNS-material was successfully synthesized through a chemical oxidation and ultrasound exfoliation method. Because of its excellent adsorption selectivity to ssDNA over dsDNA and superior quenching ability toward the fluorophore labels, CNNS were employed to construct a sensitive fluorescence sensing platform for the detection of AChE activity and inhibition. The detection was based on enzymatic reaction modulated DNA assembly on CNNS, which involved the specific AChE-catalyzed reaction-mediated DNA/Hg(2+) conformational change and subsequent signal transduction and amplification via hybridization chain reaction (HCR). Under the excitation at 485 nm, the fluorescence signal from 500 to 650 nm (lambda(max) = 518 nm) of the developed sensing system was gradually increased with increasing concentration of AChE. The quantitative determination range of AChE is from 0.02 to 1 mU/mL and the detection limit was 0.006 mU/mL. The developed strategy was successfully applied to the assay of AChE in human serum samples, and can also be used to effectively screen AChE inhibitors, showing great promise providing a robust and effective platform for AChE-related diagnosis, drug screening, and therapy.
ESTHER : Chen_2023_Mikrochim.Acta_190_268
PubMedSearch : Chen_2023_Mikrochim.Acta_190_268
PubMedID: 37338607

Title : A S-substituted Nile Blue-derived bifunctional near-infrared fluorescent probe for in vivo carboxylesterase imaging-guided photodynamic therapy of hepatocellular carcinoma - Wang_2023_J.Mater.Chem.B__
Author(s) : Wang B , Huang Y , Yang D , Xu J , Zhong X , Zhao S , Liang H
Ref : J Mater Chem B , : , 2023
Abstract : The development of theranostic probes that integrate both diagnostic and therapeutic functions still remains an intractable challenge in precise cancer treatment. Herein, a novel bifunctional near-infrared (NIR) fluorescent probe (CEP1) for carboxylesterase (CE) imaging and photodynamic therapy (PDT) of hepatocellular carcinoma (HCC) has been firstly developed and successfully applied in vitro and in vivo. The probe was constructed by introducing carbamate as both the recognition unit and the fluorescence quenching unit into the fluorophore S-substituted Nile Blue (ENBS) via a self-eliminating spacer with substituted chloride. It can be activated by CE and hydrolyzed into fluorescent ENBS, which recover fluorescence at about 700 nm, and can generate superoxide radical anions under NIR irradiation. Additionally, the probe could effectively distinguish tumor cells from normal cells by CE imaging of live cells. Furthermore, it could achieve CE imaging in vivo and significantly inhibits tumor growth by imaging-guided PDT. Therefore, this study offers a promising and attractive platform for activatable imaging-guided PDT of HCC.
ESTHER : Wang_2023_J.Mater.Chem.B__
PubMedSearch : Wang_2023_J.Mater.Chem.B__
PubMedID: 37427685

Title : Novel Insights of ANGPTL-3 on Modulating Cholesterol Efflux Capacity Induced by HDL Particle - Min_2023_Curr.Mol.Med__
Author(s) : Min L , Xiang J , Wang B , Ye C , Su X
Ref : Curr Mol Med , : , 2023
Abstract : BACKGROUND: Angiopoietin-like protein 3 (ANGPTL-3) modulates lipid metabolism and the risk of coronary artery disease (CAD), especially stable angina (SA), via suppressing lipoprotein lipase (LPL). However, whether there are other mechanisms is not elucidated yet. The current research explored the modulatory roles of ANGPTL-3 on high-density lipoprotein (HDL), which further affects atherosclerotic development. METHODS: A total of 200 individuals were enrolled in the present study. Serum ANGPTL-3 levels were detected via enzyme-linked immunosorbent assays (ELISA). Cholesterol efflux capacity induced by HDL particles was detected through H3-cholesterol loading THP-1 cell. RESULTS: The serum ANGPTL-3 levels presented no significant discordance between the SA group and the non-SA group, whereas the serum ANGPTL-3 levels in type 2 diabetes mellitus (T2DM) group were significantly elevated compared with those in the non-T2DM group [428.3 (306.2 to 736.8) ng/ml vs. 298.2 (156.8 to 555.6) ng/ml, P <0.05]. Additionally, the serum ANGPTL-3 levels were elevated in patients with low TG levels compared to those in patients with high TG levels [519.9 (377.6 to 809.0) ng/ml vs. 438.7 (329.2 to 681.0) ng/ml, P <0.05]. By comparison, the individuals in the SA group and T2DM group presented decreased cholesterol efflux induced by HDL particles [SA: (12.21+/-2.11)% vs. (15.51+/-2.76)%, P <0.05; T2DM: (11.24+/-2.13)% vs. (14.65+/-3.27)%, P <0.05]. In addition, the serum concentrations of ANGPTL-3 were inversely associated with the cholesterol efflux capacity of HDL particles (r=-0.184, P <0.05). Through regression analysis, the serum concentrations of ANGPTL-3 were found to be an independent modulator of the cholesterol efflux capacity of HDL particles (standardized beta=-0.172, P <0.05). CONCLUSION: ANGPTL-3 exhibited a negative modulatory function on cholesterol efflux capacity induced by HDL particles.
ESTHER : Min_2023_Curr.Mol.Med__
PubMedSearch : Min_2023_Curr.Mol.Med__
PubMedID: 37073658

Title : Toxic effects of isofenphos-methyl on zebrafish embryonic development - Wu_2023_Ecotoxicol.Environ.Saf_254_114723
Author(s) : Wu Y , Wang J , Xia Y , Tang K , Xu J , Wang A , Hu S , Wen L , Wang B , Yao W
Ref : Ecotoxicology & Environmental Safety , 254 :114723 , 2023
Abstract : Isofenphos-methyl (IFP) is widely used as an organophosphorus for controlling underground insects and nematodes. However, excessive use of IFP may pose potential risks to the environment and humans, but little information is available on its sublethal toxicity to aquatic organisms. To address this knowledge gap, the current study exposed zebrafish embryos to 2, 4, and 8 mg/L IFP within 6-96 h past fertilization (hpf) and measured mortality, hatching, developmental abnormalities, oxidative stress, gene expressions, and locomotor activity. The results showed that IFP exposure reduced the rates of heart and survival rate, hatchability, and body length of embryos and induced uninflated swim bladder and developmental malformations. Reduction in locomotive behavior and inhibition of AChE activity indicated that IFP exposure may induce behavioral defects and neurotoxicity in zebrafish larvae. IFP exposure also led to pericardial edema, longer venous sinus-arterial bulb (SV-BA) distance, and apoptosis of the heart cells. Moreover, IFP exposure increased the accumulation of reactive oxygen species (ROS) and the content of malonaldehyde (MDA), also elevated the levels of antioxidant enzymes of superoxide dismutase (SOD) and catalase (CAT), but decreased glutathione (GSH) levels in zebrafish embryos. The relative expressions of heart development-related genes (nkx2.5, nppa, gata4, and tbx2b), apoptosis-related genes (bcl2, p53, bax, and puma), and swim bladder development-related genes (foxA3, anxa5b, mnx1, and has2) were significantly altered by IFP exposure. Collectively, our results indicated that IFP induced developmental toxicity and neurotoxicity to zebrafish embryos and the mechanisms may be relevant to the activation of oxidative stress and reduction of acetylcholinesterase (AChE) content.
ESTHER : Wu_2023_Ecotoxicol.Environ.Saf_254_114723
PubMedSearch : Wu_2023_Ecotoxicol.Environ.Saf_254_114723
PubMedID: 36871354

Title : Reusable carboxylesterase immobilized in ZIF for efficient degradation of chlorpyrifos in enviromental water - Wang_2023_Pestic.Biochem.Physiol_194_105519
Author(s) : Wang B , Chen J , Wu S , Fang J , Li Q , Wang G
Ref : Pestic Biochem Physiol , 194 :105519 , 2023
Abstract : The past few decades have witnessed biodegradation of pesticides as a significant method in remediation of the environment for its specificity, efficiency and biocompatibility. However, the tolerability and recyclability of the enzymes in pesticide degradation and the development of enzymes that biodegrad pesticides are still urgent problems to be solved so far. Herein, a novel hyper-thermostable and chlorpyrifos-hydrolyzing carboxylesterase EstC was immobilized by biomineralization using zeolitic imidazolate framework (ZIF), one of the metal-organic frameworks (MOFs) with highly diverse structure and porosity. Compared with free enzyme, EstC@ZIF with a cruciate flower-like morphology presented scarcely variation in catalytic efficiency and generally improved the tolerance to organic solvents or detergents. Furthermore, there was scarcely decrease in the catalytic efficiency of EstC@ZIF and it also showed good reusability with about 50% residual activity after 12 continuous uses. Notably, EstC@ZIF could be used in actual water environment with an excellent value of degradation rate of 90.27% in 120 min, and the degradation efficiency remained about 50% after 9 repetitions. The present strategy of immobilizing carboxylesterase to treat pesticide-contaminated water broadens the method of immobilized enzymes on MOFs, and envisions its recyclable applicability in globe environmental remediation.
ESTHER : Wang_2023_Pestic.Biochem.Physiol_194_105519
PubMedSearch : Wang_2023_Pestic.Biochem.Physiol_194_105519
PubMedID: 37532333
Gene_locus related to this paper: strco-estli

Title : Development of a Nomogram for Predicting Mortality Risk in Sepsis Patients During Hospitalization: A Retrospective Study - Lu_2023_Infect.Drug.Resist_16_2311
Author(s) : Lu B , Pan X , Wang B , Jin C , Liu C , Wang M , Shi Y
Ref : Infect Drug Resist , 16 :2311 , 2023
Abstract : PURPOSE: We attempted to establish a model for predicting the mortality risk of sepsis patients during hospitalization. PATIENTS AND METHODS: Data on patients with sepsis were collected from a clinical record mining database, who were hospitalized at the Affiliated Dongyang Hospital of Wenzhou Medical University between January 2013 and August 2022. These included patients were divided into modeling and validation groups. In the modeling group, the independent risk factors of death during hospitalization were determined using univariate and multi-variate regression analyses. After stepwise regression analysis (both directions), a nomogram was drawn. The discrimination ability of the model was evaluated using the area under the curve (AUC) of the receiver operating characteristic (ROC) curve, and the GiViTI calibration chart assessed the model calibration. The Decline Curve Analysis (DCA) was performed to evaluate the clinical effectiveness of the prediction model. Among the validation group, the logistic regression model was compared to the models established by the SOFA scoring system, random forest method, and stacking method. RESULTS: A total of 1740 subjects were included in this study, 1218 in the modeling population and 522 in the validation population. The results revealed that serum cholinesterase, total bilirubin, respiratory failure, lactic acid, creatinine, and pro-brain natriuretic peptide were the independent risk factors of death. The AUC values in the modeling group and validation group were 0.847 and 0.826. The P values of calibration charts in the two population sets were 0.838 and 0.771. The DCA curves were above the two extreme curves. Moreover, the AUC values of the models established by the SOFA scoring system, random forest method, and stacking method in the validation group were 0.777, 0.827, and 0.832, respectively. CONCLUSION: The nomogram model established by combining multiple risk factors could effectively predict the mortality risk of sepsis patients during hospitalization.
ESTHER : Lu_2023_Infect.Drug.Resist_16_2311
PubMedSearch : Lu_2023_Infect.Drug.Resist_16_2311
PubMedID: 37155474

Title : Molecular, morphological and behavioral alterations of zebrafish (Danio rerio) embryos\/larvae after clorprenaline hydrochloride exposure - Wang_2023_Food.Chem.Toxicol_176_113776
Author(s) : Wang B , Wang A , Xu C , Tong Z , Wang Y , Zhuo X , Fu L , Yao W , Wang J , Wu Y
Ref : Food & Chemical Toxicology , 176 :113776 , 2023
Abstract : Chlorprenaline hydrochloride (CLOR) is a typical representative of beta-adrenergic agonists that may be used illegally as a livestock feed additive and may have adverse impacts on the environment. In the present study, zebrafish embryos were exposed to CLOR to investigate its developmental toxicity and neurotoxicity. The results demonstrated that CLOR exposure led to adverse effects on developing zebrafish, such as morphological changes, a high heart rate, and increased body length, resulting in developmental toxicity. Moreover, the up-regulation of activities of superoxide dismutase (SOD) and catalase (CAT) and the enhancement of malondialdehyde (MDA) content illustrated that CLOR exposure activated oxidative stress in exposed zebrafish embryos. Meanwhile, CLOR exposure also caused alterations in locomotive behavior in zebrafish embryos, including an increase in acetylcholinesterase (AChE) activity. Quantitative polymerase chain reaction (QPCR) results showed that the transcription of genes related to the central nervous system (CNS) development, namely, mbp, syn2a, alpha1-tubulin, gap43, shha, and elavl3, indicated that CLOR exposure could lead to neurotoxicity in zebrafish embryos. These results showed that CLOR exposure could cause developmental neurotoxicity in the early stages of zebrafish development and that CLOR might induce neurotoxicity by altering the expression of neuro-developmental genes, elevating AChE activity, and activating oxidative stress.
ESTHER : Wang_2023_Food.Chem.Toxicol_176_113776
PubMedSearch : Wang_2023_Food.Chem.Toxicol_176_113776
PubMedID: 37059383

Title : Rational design of a novel MOF-based ternary nanocomposite for effectively monitoring harmful organophosphates in foods and the environment - Wu_2023_Anal.Methods__
Author(s) : Wu F , Wang B , Guo H , Kang K , Ji X , Wang L , Guo S , Ren J
Ref : Anal Methods , : , 2023
Abstract : Methyl parathion (MP) is a widely used organophosphate insecticide that is extremely toxic due to its ability to irreversibly inhibit acetylcholinesterase in the body and persistently accumulate in the environment. Timely detection of MP can prevent harmful residue exposure to humans. Therefore, the development of fast, efficient electrochemical methods to detect trace MP has been highly beneficial for monitoring harmful residues in foods and environment to ensure food safety and ecological conservation. Herein, a novel hybrid metal-organic framework (MOF) nanocomposite composed of Pt nanoparticles (PtNPs), multi-walled carbon nanotubes (MWCNTs), and UiO-66-NH(2) (PtNPs/UiO-66-NH(2)/MWCNTs) was rationally designed and prepared by a facile two-step strategy for the sensitive determination of MP. The synergistic effects are illustrated in detail using XRD, XPS, FTIR, TEM, and SEM studies as well as electrochemical technologies such as CV, EIS, and DPV. In addition, the performance of the ternary nanocomposite for detecting MP was investigated by comparing it with the binary-component one. The results showed that the PtNPs/UiO-66-NH(2)/MWCNT-based electrochemical sensor exhibited outstanding sensitivity of 21.9 microA microM(-1) cm(-2), satisfactory low detection limit of 0.026 microM and wide linear range of 0.11-227.95 microM for MP analysis. Furthermore, the fabricated sensor delivered distinguished freedom from interferences, outstanding regeneration ability, and adequate recoveries for fresh foods and river water samples. In conclusion, the proposed PtNPs/UiO-66-NH(2)/MWCNT-based sensor provides a potentially useful analytical tool for determining hazardous residues of OPs in foods and the environment.
ESTHER : Wu_2023_Anal.Methods__
PubMedSearch : Wu_2023_Anal.Methods__
PubMedID: 36790872

Title : Ultrasensitive Acetylcholinesterase detection based on a surface-enhanced Raman scattering lever strategy for identifying nerve fibers - Li_2022_Talanta_252_123867
Author(s) : Li T , Sui T , Wang B , Xu K , Zhang S , Cao X , Wang Y , Qian W , Dong J
Ref : Talanta , 252 :123867 , 2022
Abstract : Accurate discriminating nerve fibers is a prerequisite for right suturing nerves in nerve transfer operation. Various methods have been developed for identification of motor and sensory fibers, but no simple method meets the requirements in clinic. In this study, a surface-enhanced Raman scattering (SERS) lever strategy is designed and developed to detect Acetylcholinesterase (AchE) ultrasensitively, in which using produced thiocholine with weak intrinsic Raman activity (four ounces) to adjust absorbance of Rhodamine B with strong intrinsic Raman activity (thousand catties) on SERS-active substrates is to increase the sensitivity. Employing a miniaturized SERS substrate, SERS-active microneedles, is to decrease the volume of enzymolysis systems. Adopting an internal reference is to increase the repeatability of collected signal. The ultrasensitive AchE detection method discriminate samples with four times of difference in enzyme activity between 1-1 x 10(-4) U/mL in about 10 min of enzymolysis time. AchE amounts in 2-mm-long segments of ventral and dorsal roots were about 0.00025-0.001 U and 0.01-0.02 U, respectively. The developed method would be a reliable method met the requirements of identifying motor and sensory fibers in clinic.
ESTHER : Li_2022_Talanta_252_123867
PubMedSearch : Li_2022_Talanta_252_123867
PubMedID: 36041317

Title : The effect of neostigmine on postoperative delirium after colon carcinoma surgery: a randomized, double-blind, controlled trial - Liu_2022_BMC.Anesthesiol_22_267
Author(s) : Liu F , Lin X , Lin Y , Deng X , Guo Y , Wang B , Dong R , Bi Y
Ref : BMC Anesthesiol , 22 :267 , 2022
Abstract : BACKGROUND: Postoperative delirium (POD) is a critical complication in patients accepting colon carcinoma surgery. Neostigmine, as a cholinesterase inhibitor, can enhance the transmission of cholinergic transmitters in synaptic space, and play an important role in maintaining the normal level of cognition, attention and consciousness. The objective of this study was to investigate the effect of neostigmine on POD and clinical prognosis. METHODS: A randomized, double-blind controlled trial was implemented in Qingdao Municipal Hospital Affiliated to Qingdao University. A total of 454 patients aged 40 to 90 years old accepted colon carcinoma surgery were enrolled between June 7, 2020, and June 7, 2021, with final follow-up on December 8, 2021. Patients were randomly assigned to two groups: the neostigmine group (group N) and the placebo group (group P), the patients in group N were injected with 0.04 mg/kg neostigmine and 0.02 mg/kg atropine intravenously. The primary endpoint was the incidence of POD, researchers evaluated the occurrence of POD by the Confusion Assessment Method (CAM) twice daily (at 10 a.m. and 2 p.m.) during the first 7 postoperative days, POD severity was assessed by the Memorial Delirium Assessment Scale (MDAS). The secondary endpoints were the extubating time, postanesthesia care unit (PACU) time, the incidence of various postoperative complications, length of hospital stays, and 6 months postoperative mortality. RESULTS: The incidence of POD was 20.20% (81/401), including 19.39% (38/196) in group N and 20.98% (43/205) in group P. There was no significant statistical significance in the incidence of POD between group N and group P (P > 0.05); Compared to group P, the extubating time and PACU time in group N were significantly reduced (P < 0.001), the incidence of postoperative pulmonary complications (POPCs) decreased significantly in group N (P < 0.05), while no significant differences were observed in postoperative hospital stay and mortality in 6 months between the two groups (P > 0.05). CONCLUSION: For patients accepted colon carcinoma surgery, neostigmine did not significantly reduce the incidence of POD, postoperative mortality and postoperative hospital stay, while it indeed reduced the extubating time, PACU time and the incidence of POPCs. TRIAL REGISTRATION: The randomized, double-blind, controlled trial was registered retrospectively at www.chictr.org.cn on 07/06/2020 (ChiCTR2000033639).
ESTHER : Liu_2022_BMC.Anesthesiol_22_267
PubMedSearch : Liu_2022_BMC.Anesthesiol_22_267
PubMedID: 35996073

Title : Comparison of developmental toxicity induced by PFOA, HFPO-DA, and HFPO-TA in zebrafish embryos - Wang_2022_Chemosphere__136999
Author(s) : Wang Y , Jiang S , Wang B , Chen X , Lu G
Ref : Chemosphere , :136999 , 2022
Abstract : Hexafluoropropylene oxide dimer acids (HFPO-DA) and hexafluoropropylene oxide trimer acids (HFPO-TA) are alternatives to perfluorooctanoic acid (PFOA). However, little information on the comparison of their toxicities is available. Here, zebrafish embryos were exposed to PFOA, HFPO-DA, and HFPO-TA with exposure concentrations of 5 and 500 microg/L. Behavioral abnormal, enzyme activities and gene expression profiles in zebrafish embryos were determined. Results showed that exposure to PFOA and its alternatives increased heart rates and inhibited locomotor activity of zebrafish embryos. Further, their exposures changed the enzyme activities (acetylcholinesterase and oxidative stress-related enzymes), ATP content, and expressions of genes related to hypothalamic-pituitary-thyroid (HPT) axis, apoptosis, and lipid metabolism. Comparison analyses found that PFOA, HFPO-TA, and HFPO-DA exposures induced different effects on the embryonic development of zebrafish, which indicates the different modes of action. The HFPO-DA exposure induced specific effects on the disorder of lipid metabolism, HPT axis, and neurodevelopment. The HFPO-TA exposure also induced different effects from the PFOA exposure, which focused on lipid metabolism. The current data shows that the HFPO-DA and HFPO-TA might not be safe alternatives to PFOA. This study provides a new understanding of the biological hazards of PFOA alternatives in aquatic organisms, which can guide their usage.
ESTHER : Wang_2022_Chemosphere__136999
PubMedSearch : Wang_2022_Chemosphere__136999
PubMedID: 36309054

Title : Dual-Modal Nanoscavenger for Detoxification of Organophosphorus Compounds - Zou_2022_ACS.Appl.Mater.Interfaces__
Author(s) : Zou S , Wang B , Wang Q , Liu G , Song J , Zhang F , Li J , Wang F , He Q , Zhu Y , Zhang L
Ref : ACS Appl Mater Interfaces , : , 2022
Abstract : Organophosphorus compounds (OPs) pose great military and civilian hazards. However, therapeutic and prophylactic antidotes against OP poisoning remain challenging. In this study, we first developed a novel nanoscavenger (rOPH/ZIF-8@E-Lipo) against methyl paraoxon (MP) poisoning using enzyme immobilization and erythrocyte-liposome hybrid membrane camouflage techniques. Then, we evaluated the physicochemical characterization, stability, and biocompatibility of the nanoscavengers. Afterward, we examined acetylcholinesterase (AChE) activity, cell viability, and intracellular reactive oxygen species (ROS) to indicate the protective effects of the nanoscavengers in vitro. Following the pharmacokinetic and biodistribution studies, we further evaluated the therapeutic and prophylactic detoxification efficacy of the nanoscavengers against MP in various poisoning settings. Finally, we explored the penetration capacity of the nanoscavengers across the blood-brain barrier (BBB). The present study validated the successful construction of a novel nanoscavenger with excellent stability and biocompatibility. In vitro, the resulting nanoscavenger exhibited a significant protection against MP-induced AChE inactivation, oxidative stress, and cytotoxicity. In vivo, apart from the positive therapeutic effects, the nanoscavengers also exerted significant prophylactic detoxification efficacy against single lethal MP exposure, repeated lethal MP challenges, and sublethal MP poisoning. These excellent detoxification effects of the nanoscavengers against OPs may originate from a dual-mode mechanism of inner recombinant organophosphorus hydrolase (rOPH) and outer erythrocyte membrane-anchored AChE. Finally, in vitro and in vivo studies jointly demonstrated that monosialoganglioside (GM1)-modified rOPH/ZIF-8@E-Lipo could penetrate the BBB with high efficiency. In conclusion, a stable and safe dual-modal nanoscavenger was developed with BBB penetration capability, providing a promising strategy for the treatment and prevention of OP poisoning.
ESTHER : Zou_2022_ACS.Appl.Mater.Interfaces__
PubMedSearch : Zou_2022_ACS.Appl.Mater.Interfaces__
PubMedID: 36089739

Title : Hemoperfusion in combination with hemofiltration for acute severe organophosphorus pesticide poisoning: A systematic review and meta-analysis - Zhang_2022_J.Res.Med.Sci_27_33
Author(s) : Zhang M , Zhang W , Zhao S , Tian X , Fu G , Wang B
Ref : J Res Med Sci , 27 :33 , 2022
Abstract : BACKGROUND: Acute severe organophosphorus pesticide poisoning (ASOPP) is one of the major diseases that endanger human life and health. However, the effects of conventional therapy including gastric lavages, mechanical ventilation, muscarinic antagonist drugs, and cholinesterase reactivators were uncertain. This meta-analysis aims to investigate the safety and efficacy of hemoperfusion combined with hemofiltration besides routine therapy for ASOPP. MATERIALS AND METHODS: A comprehensive search for candidate publications was performed through PubMed, Medline, Cochrane Library, WanFang, Chinese Biomedical Literature, and China National Knowledge Infrastructure from database inception to May 12, 2020. The retrieved studies were screened by the predefined inclusion and exclusion criteria. The data of important end points were extracted. The risk ratio (RR) and weighted mean difference (WMD) were pooled for categorical variables and continuous variables, respectively. Meta-analyses and publication bias were conducted by using STATA software version 15.1. RESULTS: A total of 11 randomized controlled trials with 811 patients were included. Compared to conventional therapy group, patients in the hemoperfusion plus hemofiltration group were significantly superior with regard to mortality (RR 0.38, 95% confidence interval [CI] [0.25, 0.57], P < 0.001), total atropine dosing (WMD -147.34 mg, 95% CI [-199.49, -95.18], P < 0.001), duration of mechanical ventilation (WMD -2.34 days, 95% CI [-3.77, -0.92], P < 0.001), cholinesterase recovery time (WMD -2.49 days, 95% CI [-3.14, -1.83], P < 0.001), and length of stay (WMD -4.52 days, 95% CI [-5.31, -3.73], P < 0.001). CONCLUSION: Combined hemoperfusion and hemofiltration was a very safe and effective treatment protocol for ASOPP, not only resulting in significantly decreased mortality but also resulting in reduced total atropine dosing, duration of mechanical ventilation, cholinesterase recovery time, and length of stay.
ESTHER : Zhang_2022_J.Res.Med.Sci_27_33
PubMedSearch : Zhang_2022_J.Res.Med.Sci_27_33
PubMedID: 35548179

Title : Phlorizin alleviates cholinergic memory impairment and regulates gut microbiota in d-galactose induced mice - Su_2022_Exp.Gerontol__111863
Author(s) : Su YL , Liu D , Liu YJ , Ji YL , Liu GS , Wang JL , Wang B , Wang H
Ref : Experimental Gerontology , :111863 , 2022
Abstract : We explored the effect of phlorizin against cholinergic memory impairment and dysbacteriosis in D-galactose induced ICR mice. The control (CON) group, D-galactose model (DGM) group, and three groups (DG-PL, DG-PM, DG-PH) treated with phlorizin at 0.01%, 0.02%, and 0.04% (w/w) in diets were raised for 12 weeks. Supplementing with phlorizin reversed the loss of organ coefficient and body weight caused by D-galactose. The functional abilities of phlorizin on hippocampal-dependent spatial learning and memory, anti-oxidation, anti-inflammation were also observed. Meanwhile, phlorizin intervention upregulated the gene expression of Nrf2, GSH-PX, SOD1, decreased the gene expression of NF-kappaB, TLR-4, TNF-alpha, and IL-1beta in the hippocampus, while enhanced the gene expression of JAM-A, Mucin2, Occludin in the caecum. Furthermore, a neurotransmitter of acetylcholine (ACh) was enhanced, while acetylcholinesterase (AChE) activity was inhibited by phlorizin administration. Moreover, phlorizin administration increased short-chain fatty acids (SCFAs) content, and reduced lipopolysaccharides (LPS) levels, which may relate to the rebuilding of gut microbiota homeostasis. Treatment with phlorizin may be an effective intervention for alleviating cognitive decline and gut microbiota dysbiosis.
ESTHER : Su_2022_Exp.Gerontol__111863
PubMedSearch : Su_2022_Exp.Gerontol__111863
PubMedID: 35660419

Title : Recombinant expression and surface display of a zearalenone lactonohydrolase from Trichoderma aggressivum in Escherichia coli - Chen_2021_Protein.Expr.Purif_187_105933
Author(s) : Chen S , Pan L , Liu S , Li X , Wang B
Ref : Protein Expr Purif , 187 :105933 , 2021
Abstract : Zearalenone (ZEN), one of the most dangerous mycotoxins, causes enormous economic losses in the food and feed industries. To solve the problem of ZEN pollution, ZEN detoxifying enzymes are in emergent need. In this study, a zearalenone lactonohydrolase from Trichoderma aggressivum, denoted as ZHD-P, was heterologously expressed and characterized. The intracellular ZHD-P from E. coli BL21(DE3) exhibited high activity for ZEN degradation (191.94 U/mg), with the optimal temperature and pH of 45 degreesC and 7.5-9.0, respectively. With excellent temperature stability, the intracellular ZHD-P retained 100% activity when it was incubated at 25-40 degreesC for 1 h. Furthermore, we firstly constructed an E. coli cell surface display system for ZHD-P. The surface-displayed ZHD-P exhibited high activity against ZEN and showed optimal activity at 40 degreesC and pH 9.0. With superior pH stability, the surface-displayed ZHD-P retained 80% activity when it was incubated at pH 5.0-11.0 for 12 h. Interestingly, the metal ions tolerance of the surface-displayed ZHD-P was better than the intracellular form. Additionally, the surface-displayed ZHD-P could be reused four times with the residual enzyme activity of more than 50%. The biotoxicity assessment using P. phosphoreum T3 indicated that ZEN could be degraded into hypotoxic products by the intracellular or surface-displayed ZHD-P. ZHD-P could be feasible for ZEN detoxification.
ESTHER : Chen_2021_Protein.Expr.Purif_187_105933
PubMedSearch : Chen_2021_Protein.Expr.Purif_187_105933
PubMedID: 34273541

Title : Characterization of a carboxylesterase with hyper-thermostability and alkali-stability from Streptomyces lividans TK24 - Chang_2021_Extremophiles__
Author(s) : Chang X , Wu S , Chen J , Xiong S , Wang P , Shi X , Wang A , Wang B
Ref : Extremophiles , : , 2021
Abstract : A gene (estA', 804 bp) from Streptomyces lividans TK24 was artificially synthesized and successfully overexpressed as a 6His-tagged fusion protein in Escherichia coli. It encoded a carboxylesterase (EstA) that composed of 267 amino acids with a predicted molecular weight of 28.56 kDa. Multiple sequence alignment indicated that EstA has typical characteristics of esterases, including a catalytic triad (Ser93-Asp194-His224) and a conserved pentapeptide motif (Gly91-Leu92-Ser93-Met94-Gly95). Simultaneously, phylogenetic analysis indicated that EstA belongs to family VI. Biochemical characterization displayed its optimum enzyme activity was at 55 and pH 8.5. Additionally, EstA exhibited higher activity towards short carbon substrates and showed the outstanding catalytic efficiency for pNPA2 with k(cat)/K(m) of 2296.14 +/- 10.35 s(-1) mM(-1). Notably, EstA has hyper-thermostability and good alkali stability. The activity of EstA did not change obviously when incubated at 50 and 100 for 337 and 1 h, independently. Besides, by incubating at 100 for 6 h, EstA remained about half of its initial activity. Moreover, EstA showed stability at pH ranging from 8.0 to 11.0, and about 90% residual enzyme activity was reserved by being treated at pH 8.0 or 9.0 for 80 h, especially. Such multiple features prepare EstA for a potential candidate in the field of biological catalysis of some industrial applications under harsh conditions.
ESTHER : Chang_2021_Extremophiles__
PubMedSearch : Chang_2021_Extremophiles__
PubMedID: 33515353
Gene_locus related to this paper: strco-SCO2123

Title : Colorimetric detection of acetylcholinesterase and its inhibitor based on thiol-regulated oxidase-like activity of 2D palladium square nanoplates on reduced graphene oxide - Yan_2021_Mikrochim.Acta_188_162
Author(s) : Yan B , Liu W , Duan G , Ni P , Jiang Y , Zhang C , Wang B , Lu Y , Chen C
Ref : Mikrochim Acta , 188 :162 , 2021
Abstract : A convenient and sensitive colorimetric assay for acetylcholinesterase (AChE) and its inhibitor has been designed based on the oxidase-like activity of {100}-faceted Pd square nanoplates which are grown in situ on reduced graphene oxide (PdSP@rGO). PdSP@rGO can effectively catalyze the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) without the assistance of H(2)O(2) to generate blue oxidized TMB (oxTMB) with a characteristic absorption peak at 652 nm. In the presence of AChE, acetylthiocholine (ATCh), a typical AChE substrate, is hydrolyzed to thiocholine (TCh). The generated TCh can effectively inhibit the PdSP@rGO-triggered chromogenic reaction of TMB via cheating with Pd, resulting in color fading and decrease in absorbance. Thus, a sensitive probe for AChE activity is constructed with a working range of 0.25-5 mU mL(-1) and a limit of detection (LOD) of 0.0625 mU mL(-1). Furthermore, because of the inhibition effect of tacrine on AChE, tacrine is also detected through the colorimetric AChE assay system within the concentrations range 0.025-0.4 microM with a LOD of 0.00229 microM. Hence, a rapid and facile colorimetric procedure to sensitively detect AChE and its inhibitor can be anticipated through modulating the oxidase-like activity of PdSP@rGO. Colorimetric method for detection of AChE and its inhibitor is established by modulating the oxidase mimetic activity of {100}-faceted Pd square nanoplates on reduced graphene oxide (PdSP@rGO).
ESTHER : Yan_2021_Mikrochim.Acta_188_162
PubMedSearch : Yan_2021_Mikrochim.Acta_188_162
PubMedID: 33839958

Title : Anti-foodborne enteritis effect of galantamine potentially via acetylcholine anti-inflammatory pathway in fish - Wu_2020_Fish.Shellfish.Immunol_97_204
Author(s) : Wu N , Xu X , Wang B , Li XM , Cheng YY , Li M , Xia XQ , Zhang YA
Ref : Fish Shellfish Immunol , 97 :204 , 2020
Abstract : Foodborne enteritis has become a limiting factor in aquaculture. Plant protein sources have already caused enteritic inflammation and inhibition in growth performance. Attempts have been made to find an effective solution to foodborne enteritis. Based on the previously suggested fish cholinergic anti-inflammatory pathway, galantamine, a typical cholinesterase inhibitor, was tested for the repression of pro-inflammatory cytokines for soybean meal induced enteritis by injection into grass carp. Both the phylogenetic analysis of cholinesterase, AchR and bioinformatic prediction, indicated galantamine's potential use as an enteritis drug. The result highlighted galantamine's potential effect for anti-enteritis in fish, especially in carps. Subsequently, a 4-week feeding trail using galantamine as an additive, in a zebrafish soybean meal induced enteritis model, demonstrated the prevention of enteritis. The results demonstrated that galantamine could prevent intestinal pathology, both histologically and molecularly, and also maintain growth performance. Reflected by gene expressional analysis, all mechanical, chemical and immune functions of the intestinal barrier could be protected by galantamine supplementation, which aided molecularly in the control of fish foodborne enteritis, through down-regulating Th17 type proinflammatory factors, meanwhile resuming the level of Treg type anti-inflammatory factors. Therefore, the current results shed light on fish intestinal acetylcholine anti-inflammation, by the dietary addition of galantamine, which could give rise to protection from foodborne enteritis.
ESTHER : Wu_2020_Fish.Shellfish.Immunol_97_204
PubMedSearch : Wu_2020_Fish.Shellfish.Immunol_97_204
PubMedID: 31843701

Title : Acetylcholinesterase electrochemical biosensors with graphene-transition metal carbides nanocomposites modified for detection of organophosphate pesticides - Wang_2020_PLoS.One_15_e0231981
Author(s) : Wang B , Li Y , Hu H , Shu W , Yang L , Zhang J
Ref : PLoS ONE , 15 :e0231981 , 2020
Abstract : An acetylcholinesterase biosensor modified with graphene and transition metal carbides was prepared to detect organophosphorus pesticides. Cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy were used to characterize the electrochemical catalysis of the biosensor: acetylcholinesterase/chitosan-transition metal carbides/graphene/glassy carbon electrode. With the joint modification of graphene and transition metal carbides, the biosensor has a good performance in detecting dichlorvos with a linear relationship from 11.31 muM to 22.6 nM and the limit of detection was 14.45 nM. Under the premise of parameter optimization, the biosensor showed a good catalytic performance for acetylcholine. Compared to the biosensors without modification, it expressed a better catalytic performance due to the excellent electrical properties, biocompatibility and high specific surface area of graphene, transition metal carbides. Finally, the biosensor exhibits good stability, which can be stored at room temperature for one month without significant performance degradation, and has practical potential for sample testing.
ESTHER : Wang_2020_PLoS.One_15_e0231981
PubMedSearch : Wang_2020_PLoS.One_15_e0231981
PubMedID: 32348360

Title : Characterization of a novel hyper-thermostable and chlorpyrifos-hydrolyzing carboxylesterase EstC: A representative of the new esterase family XIX - Wang_2020_Pestic.Biochem.Physiol_170_104704
Author(s) : Wang B , Wu S , Chang X , Chen J , Ma J , Wang P , Zhu G
Ref : Pestic Biochem Physiol , 170 :104704 , 2020
Abstract : Carboxylesterases have widely been used in a series of industrial applications, especially, the detoxification of pesticide residues. In the present study, EstC, a novel carboxylesterase from Streptomyces lividans TK24, was successfully heterogeneously expressed, purified and characterized. Phylogenetic analysis showed that EstC can be assigned as the first member of a novel family XIX. Multiple sequence alignment indicated that EstC has highly conserved structural features, including a catalytic triad formed by Ser155, Asp248 and His278, as well as a canonical Gly-His-Ser-Ala-Gly pentapeptide. Biochemical characterization indicated that EstC exhibited maximal activity at pH 9.0 (Tris-HCl buffer) and 55 degC. It also showed higher activity towards short-chain substrates, with the highest activity for p-nitrophenyl acetate (pNPA2) (K(m) = 0.31 +/- 0.02 mM, k(cat)/K(m) = 1923.35 +/- 9.62 s(-1) mM(-1)) compared to other pNP esters used in this experiment. Notably, EstC showed hyper-thermostability and good alkali stability. The activity of EstC had no significant changes when it was incubated under 55 degC for 100 h and reached half-life after incubation at 100 degC for 8 h. Beyond that, EstC also showed stability at pH ranging from 6.0 to 11.0 and about 90% residual activity still reserved after treatment at pH 8.0 or 9.0 for 26 h, especially. Furthermore, EstC had outstanding potential for bioremediation of chlorpyrifos-contaminated environment. The recombinant enzyme (0.5 U mL(-1)) could hydrolyze 79.89% chlorpyrifos (5 mg L(-1)) at 37 degC within 80 min. These properties will make EstC have a potential application value in various industrial productions and detoxification of chlorpyrifos residues.
ESTHER : Wang_2020_Pestic.Biochem.Physiol_170_104704
PubMedSearch : Wang_2020_Pestic.Biochem.Physiol_170_104704
PubMedID: 32980065
Gene_locus related to this paper: strco-estli

Title : Cerebrospinal fluid cholinergic biomarkers are associated with postoperative delirium in elderly patients undergoing Total hip\/knee replacement: a prospective cohort study - Lin_2020_BMC.Anesthesiol_20_246
Author(s) : Lin X , Tang J , Liu C , Li X , Cao X , Wang B , Dong R , Xu W , Yu X , Wang M , Bi Y
Ref : BMC Anesthesiol , 20 :246 , 2020
Abstract : BACKGROUND: Postoperative delirium (POD) is a frequent complication after surgery and its occurrence is associated with poor outcomes. The neuropathology of this complication is unclear, but it is important to evaluate relevant biomarkers for postoperative status. The purpose of this study is to explore the relationship between expression levels of cholinergic biomarkers in cerebrospinal fluid (CSF) and the occurrence and development of POD in elderly patients. METHODS: Four hundred and ninety-two elderly patients aged 65 years old or older with elective total hip/knee replacement received combined spinal-epidural anesthesia. Preoperative baseline cognitive function was assessed using the Mini-Mental State Examination (MMSE) before surgery. Each patient was interviewed in post-anesthesia care unit (PACU) and on the first, second, third and seventh (or before discharge) postoperative days. POD was diagnosed using the Confusion Assessment Method (CAM), and POD severity was measured using the Memorial Delirium Assessment Scale (MDAS). Preoperative CSF and plasma choline acetyltransferase (ChAT), acetylcholinesterase (AChE), butyrylcholinesterase (BuChE), interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) levels were determined by ELISA. The levels of ChAT, AChE and BuChE activities were determined by spectrophotometry. RESULTS: POD was detected in 11.4% (51/447) of the patients. AChE, BuChE, ChAT, TNF-alpha and IL-6 concentrations in CSF and plasma have higher consistency. In preoperative CSF and preoperative and postoperative plasma, down-regulation of the concentration and activity of AChE and BuChE as well as up-regulation of the concentration and activity of ChAT and the concentrations of IL-6 and TNF-alpha were observed in patients who developed POD, and the decrease in BuChE was the most obvious. Logistic analysis showed the activities of ChAT, AChE and BuChE in CSF were still related to POD after adjusting for related factors such as sex, age, years of education, height, weight, body mass index (BMI), and American Society of Anesthesiologists (ASA) class. Receiver Operating Characteristic (ROC) curve analysis was conducted to determine the Area Under Curve (AUC) of AChE, BuChE and ChAT activity in CSF was 0.679 (P < 0.01), 0.940 (P < 0.01) and 0.819 (P < 0.01) respectively and found that BuChE activity had the most accurate diagnostic value. CONCLUSION: The changes in preoperative activity of AChE, BuChE and ChAT in CSF were associated with the development of POD in elderly patients, and BuChE activity had the greatest diagnostic value, which may be related to central cholinergic degradation. These cholinergic biomarkers might participate in the neuropathology of POD, pending further investigations. TRIAL REGISTRATION: This study was registered at Chictr.org.cn (NO. ChiCTR1900023729 ) June 9th, 2019. (Retrospectively registered).
ESTHER : Lin_2020_BMC.Anesthesiol_20_246
PubMedSearch : Lin_2020_BMC.Anesthesiol_20_246
PubMedID: 32988381

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 : Karrikin Signaling Acts Parallel to and Additively with Strigolactone Signaling to Regulate Rice Mesocotyl Elongation in Darkness - Zheng_2020_Plant.Cell_32_2780
Author(s) : Zheng J , Hong K , Zeng L , Wang L , Kang S , Qu M , Dai J , Zou L , Zhu L , Tang Z , Meng X , Wang B , Hu J , Zeng D , Zhao Y , Cui P , Wang Q , Qian Q , Wang Y , Li J , Xiong G
Ref : Plant Cell , 32 :2780 , 2020
Abstract : Seedling emergence in monocots depends mainly on mesocotyl elongation, requiring coordination between developmental signals and environmental stimuli. Strigolactones (SLs) and karrikins are butenolide compounds that regulate various developmental processes; both are able to negatively regulate rice (Oryza sativa) mesocotyl elongation in the dark. Here, we report that a karrikin signaling complex, DWARF14-LIKE (D14L)-DWARF3 (D3)-O. sativa SUPPRESSOR OF MAX2 1 (OsSMAX1) mediates the regulation of rice mesocotyl elongation in the dark. We demonstrate that D14L recognizes the karrikin signal and recruits the SCF(D3) ubiquitin ligase for the ubiquitination and degradation of OsSMAX1, mirroring the SL-induced and D14- and D3-dependent ubiquitination and degradation of D53. Overexpression of OsSMAX1 promoted mesocotyl elongation in the dark, whereas knockout of OsSMAX1 suppressed the elongated-mesocotyl phenotypes of d14l and d3 OsSMAX1 localizes to the nucleus and interacts with TOPLESS-RELATED PROTEINs, regulating downstream gene expression. Moreover, we showed that the GR24 enantiomers GR24(5DS) and GR24 (ent-5DS) specifically inhibit mesocotyl elongation and regulate downstream gene expression in a D14- and D14L-dependent manner, respectively. Our work revealed that karrikin and SL signaling play parallel and additive roles in modulating downstream gene expression and negatively regulating mesocotyl elongation in the dark.
ESTHER : Zheng_2020_Plant.Cell_32_2780
PubMedSearch : Zheng_2020_Plant.Cell_32_2780
PubMedID: 32665307

Title : Cancer-related fatigue and biochemical parameters among cancer patients with different stages of sarcopenia - Wang_2020_Support.Care.Cancer_28_581
Author(s) : Wang B , Thapa S , Zhou T , Liu H , Li L , Peng G , Yu S
Ref : Support Care Cancer , 28 :581 , 2020
Abstract : PURPOSE: Cancer-related fatigue (CRF) is a pervasive symptom experienced by cancer patients. Sarcopenia has been suggested as a treatment target of CRF. This study aims to assess the differences of CRF and biochemical markers among different stages of sarcopenia which remain poorly delineated. METHODS: A total of 187 patients were included in this cross-sectional study. Based on muscle mass (skeletal muscle index, SMI), muscle strength (handgrip strength), and physical performance (SARC-F score), patients were divided into four groups (non-sarcopenia, pre-sarcopenia, sarcopenia, and severe sarcopenia). Cancer-related fatigue was measured by the Brief Fatigue Inventory (BFI). Biochemical markers were measured by routine blood tests. RESULTS: The BFI score was significantly associated with sarcopenia stage (r=0.500; P<0.001). Cancer patients in severe sarcopenia group suffered from worse CRF than those in non-sarcopenia, pre-sarcopenia, and sarcopenia groups (P<0.001). In the multivariate linear regression model (R(2)=0.542), CRF was significantly correlated with SARC-F score (standardized B=0.519; P<0.001) and high-sensitivity C-reactive protein (standardized B=0.389; P=0.004). Serum albumin and cholinesterase were statistically correlated with both sarcopenia stage and CRF. CONCLUSIONS: The significantly increased occurrence and severity of CRF in cancer patients with sarcopenia suggest that sarcopenia may be a crucial target to improve the management of CRF. Circulating albumin and cholinesterase have the potential to predicting sarcopenia as biomarkers.
ESTHER : Wang_2020_Support.Care.Cancer_28_581
PubMedSearch : Wang_2020_Support.Care.Cancer_28_581
PubMedID: 31102055

Title : Overexpression of multiple cytochrome P450 genes associated with sulfoxaflor resistance in Aphis gossypii Glover - Ma_2019_Pestic.Biochem.Physiol_157_204
Author(s) : Ma K , Tang Q , Zhang B , Liang P , Wang B , Gao X
Ref : Pestic Biochem Physiol , 157 :204 , 2019
Abstract : Sulfoxaflor is the first commercially available sulfoximine insecticide, which exhibits highly efficacy against many sap-feeding insect pests and has been applied as an alternative insecticide against cotton aphid in China. This study was conducted to investigate the risk of resistance development, the cross-resistance pattern and the potential resistance mechanisms of sulfoxaflor in Aphis gossypii. A colony (SulR strain) of A. gossypii with 245-fold resistance, originated from Xinjiang field population, was established by continuous selection using sulfoxaflor. The SulR strain has developed cross-resistance to imidacloprid (80.8-fold), acetamiprid (19.3-fold), thiamethoxam (10.0-fold), and flupyradifurone (107.5-fold), while no cross-resistance was detected to malathion, omethoate, bifenthrin, methomyl, and carbosulfan. Piperonyl butoxide and S, S, S-tributyl phosphorotrithioate could significantly increase the toxicity of sulfoxaflor to the SulR strain by 5.99- and 4.18-fold, respectively, whereas no synergistic effect with diethyl maleate was observed. The activities of P450s and carboxylesterase were significantly higher in the SulR strain than that in the SS strain. Further gene expression determination demonstrated that nine P450 genes were significantly increased in SulR strain and suppression the expression of CYP6CY13 and CYP6CY19 by RNAi significantly increased the susceptibility of SulR adult aphids to sulfoxaflor. These results demonstrated that the enhancing detoxification by cytochrome P450 monooxygenase may be involved in A.gossypii resistance to sulfoxaflor.
ESTHER : Ma_2019_Pestic.Biochem.Physiol_157_204
PubMedSearch : Ma_2019_Pestic.Biochem.Physiol_157_204
PubMedID: 31153470

Title : Accumulation, biodegradation and toxicological effects of N-ethyl perfluorooctane sulfonamidoethanol on the earthworms Eisenia fetida exposed to quartz sands - Zhao_2019_Ecotoxicol.Environ.Saf_181_138
Author(s) : Zhao S , Liu T , Wang B , Fu J , Liang T , Zhong Z , Zhan J , Liu L
Ref : Ecotoxicology & Environmental Safety , 181 :138 , 2019
Abstract : While N-ethyl perfluorooctane sulfonamidoethanol (EtFOSE) is a precursor of perfluorooctane sulfonate (PFOS), its bioaccumulation, transformation and toxicological effects in earthworms (Eisenia fetida) exposed to quartz sands are poorly understood. The present study showed that except for parent EtFOSE, N-ethylperfluorooctane sulfonamide acetate (EtFOSAA), N-ethyl perfluorooctane sulfonamide (EtFOSA), perfluorooctane sulfonamide acetate (FOSAA), perfluorooctane sulfonamide (FOSA) and PFOS were detected in earthworms, with EtFOSAA as the primary biotransformation product. The biota-to-sand accumulation factor (BSAF) and uptake rate coefficient (ku) of EtFOSE were 5.7 and 0.542/d, respectively. The elimination rate constants (ke) decreased in the order EtFOSA (0.167/d) approximately FOSAA (0.147/d)>FOSA (0.119/d) approximately EtFOSAA (0.117/d)>EtFOSE (0.095/d)>PFOS (0.069/d). No significant effects were observed in malondialdehyde (MDA) contents and acetylcholinesterase (AChE) activities between EtFOSE treatments and controls. EtFOSE could cause significant accumulation of reactive oxygen species (ROS) in earthworms. Peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) were significantly activated by 41.4-74.3%, 37.2-44.4% and 32.4-52.3% from day 4-10, respectively, while 8-Hydroxy-2-deoxyguanosine (8-OHdG) levels were elevated by 47.7-70.3% from day 8-10, demonstrating that EtFOSE induced oxidative stress and oxidative DNA damage in earthworms. Significant increase of glutathione-S-transferase (GST) with 41.6-62.8% activation (8-10d) gave indirect evidence on the conjugation of EtFOSE or its corresponding metabolites during phase II of detoxication. This study provides important information on the fate and potential risks of EtFOSE to terrestrial invertebrates.
ESTHER : Zhao_2019_Ecotoxicol.Environ.Saf_181_138
PubMedSearch : Zhao_2019_Ecotoxicol.Environ.Saf_181_138
PubMedID: 31176248

Title : Development of the hidden multifunctional agents for Alzheimer's disease - Huang_2019_Eur.J.Med.Chem_177_247
Author(s) : Huang W , Liang M , Li Q , Zheng X , Zhang C , Wang Q , Tang L , Zhang Z , Wang B , Shen Z
Ref : Eur Journal of Medicinal Chemistry , 177 :247 , 2019
Abstract : Alzheimer's disease (AD) is a chronic, fatal and complex neurodegenerative disorder, which is characterized by cholinergic system dysregulation, metal dyshomeostasis, amyloid-beta (Abeta) aggregation, etc. Therefore in most cases, single-target or single-functional agents are insufficient to achieve the desirable effect against AD. Multi-Target-Directed Ligand (MTDL), which is rationally designed to simultaneously hit multiple targets to improve the pharmacological profiles, has been developed as a promising approach for drug discovery against AD. To identify the multifunctional agents for AD, we developed an innovative method to successfully conceal the metal chelator into acetylcholinesterase (AChE) inhibitor. Briefly, the "hidden" agents first cross the Blood Brain Barrier (BBB) to inhibit the function of AChE, and the metal chelator will then be released via the enzymatic hydrolysis by AChE. Therefore, the AChE inhibitor, in this case, is not only a single-target agent against AD, but also a carrier of the metal chelator. In this study a total of 14 quinoline derivatives were synthesized and biologically evaluated. Both in vitro and in vivo results demonstrated that compound 9b could cross the BBB efficiently, then release 8a, the metabolite of 9b, into brain. In vitro, 9b had a potent AChE inhibitory activity, while 8a displayed a significant metal ion chelating function, therefore in combination, both 9b and 8a exhibited a considerable inhibition of Abeta aggregation, one of the observations that plays important roles in the pathogenesis of AD. The efficacy of 9b against AD was further investigated in both a zebrafish model and two different mice models.
ESTHER : Huang_2019_Eur.J.Med.Chem_177_247
PubMedSearch : Huang_2019_Eur.J.Med.Chem_177_247
PubMedID: 31158742

Title : Activatable Near-Infrared Fluorescent Probe for Dipeptidyl Peptidase IV and Its Bioimaging Applications in Living Cells and Animals - Liu_2018_Anal.Chem_90_3965
Author(s) : Liu T , Ning J , Wang B , Dong B , Li S , Tian X , Yu Z , Peng Y , Wang C , Zhao X , Huo X , Sun C , Cui J , Feng L , Ma X
Ref : Analytical Chemistry , 90 :3965 , 2018
Abstract : Visualization of endogenous disease-associated enzymes is of great clinical significance, as it could allow earlier clinical diagnosis and timely intervention. Herein, we first synthesized and characterized an enzyme-activatable near-infrared fluorescent probe, GP-DM, for determining the activity of dipeptidyl peptidase IV (DPP IV), which is associated with various pathological processes, especially in diabetes and malignant tumors. GP-DM emitted significant turn-on NIR fluorescent signals simultaneously in response to DPP IV, making it favorable for accurately and dynamically monitoring DPP IV activity in vitro and in vivo. GP-DM exhibited excellent specificity and sensitivity in DPP IV imaging, as indicated by its higher catalytic activity than other human serine hydrolases and by its strong anti-interference ability to a complex biological matrix, which was fully characterized in a series of phenotyping reactions and inhibition assays. Encouraged by the advantages mentioned above, we successfully used GP-DM to evaluate endogenous DPP IV activity in various biological samples (plasma and tissue preparations) and living tumor cells and performed real-time in vivo bioimaging of DPP IV in zebrafish and tumor-bearing nude mice. All of the results reflected and highlighted the potential application value of GP-DM in the early detection of pathologies, individual tailoring of drug therapy, and image-guided tumor resection. Furthermore, our results revealed that DPP IV, a key target enzyme, is closely associated with the migration and proliferation of cancer cells and regulating the biological activity of DPP IV may be a useful approach for cancer therapy.
ESTHER : Liu_2018_Anal.Chem_90_3965
PubMedSearch : Liu_2018_Anal.Chem_90_3965
PubMedID: 29493228

Title : Tomenphantadenine, an unprecedented germacranolide-adenine hybrid heterodimer from the medicinal plant Elephantopus tomentosus L - Guo_2018_Fitoterapia_125_217
Author(s) : Guo ZK , Wang B , Cai CH , Huang SZ , Yuan JZ , Mei WL , Dai HF
Ref : Fitoterapia , 125 :217 , 2018
Abstract : An unusual adenine-substituted germacrane sesquiterpene lactone, tomenphantadenine (1), has been isolated from the whole plant of Elephantopus tomentosus L. The structure of this compound was established by comprehensive spectroscopic analysis including high resolution (HR) ESI-MS, 1D and 2D nuclear magnetic resonance (NMR) spectroscopic data. This compound features novel hybrid pattern of germacrane sesquiterpene with adenine through C-N linkage, and a possible biosynthetic pathway for it was proposed. Compound 1 showed potent antibacterial activity against the gram-positive Staphylococcus aureus and weak acetylcholinesterase (AChE) inhibitory activity.
ESTHER : Guo_2018_Fitoterapia_125_217
PubMedSearch : Guo_2018_Fitoterapia_125_217
PubMedID: 29197542

Title : [Effect of enteral nutrition tolerance assessment standardized process management on ventilator associated pneumonia and prognosis in patients with tracheotomy and long-term mechanical ventilation in intensive care unit] - Wang_2018_Zhonghua.Wei.Zhong.Bing.Ji.Jiu.Yi.Xue_30_1173
Author(s) : Wang C , Wang J , Wang B , Jing X , Huang Y
Ref : Zhonghua Wei Zhong Bing Ji Jiu Yi Xue , 30 :1173 , 2018
Abstract : OBJECTIVE: To investigate the effect of enteral nutrition (EN) tolerance assessment standardized process management on nosocomial infection and prognosis in patients with tracheotomy and long-term mechanical ventilation (MV) in intensive care unit (ICU). METHODS: A prospective cohort study was conducted. Forty-six patients who required long-term MV due to tracheotomy admitted to ICU of Changzhou First People's Hospital from January 2015 to December 2017 were enrolled. Taking the standardized process management of EN tolerance assessment from June 30th, 2016 as the time spot, patients admitted from January 1st, 2015 to June 30th, 2016 were taken as the control group (25 cases) and patients admitted from July 1st, 2016 to December 31st, 2017 as the observation group (21 cases). The two groups were all given conventional EN treatment and conventional symptomatic supportive treatment. Patients in the observation group was given the EN tolerance standardized process management, and received the nutritional risk screening score. While the control group was given a conventional EN management protocol (nurses routinely reported to the doctor and then gave further action). The nutritional support related indicators within 30 days of treatment (including serum albumin, serum pre-albumin, serum cholinesterase), the EN feeding tolerance index (the average amount of gastrointestinal motility drugs used within 30 days, the average EN interruption time per patient, and the incidence of gastrointestinal bleeding) and the prognosis-related indicators [including the incidence of ventilator-associated pneumonia (VAP), the monthly average hospitalization cost, the proportion of drugs, and the ratio of antibiotics to drugs] were compared. RESULTS: Compared with the control group, serum albumin, pre-albumin and cholinesterase were significantly increased in the observation group [albumin (g/L): 32.86+/-4.83 vs. 28.16+/-3.62, pre-albumin (mg/L): 186.42+/-62.84 vs. 163.26+/-73.49, cholinesterase (U/L): 3 482.34+/-369.92 vs. 2 986.86+/-491.49, all P < 0.05], the average use of gastrointestinal motility drugs was significantly reduced (mg: 11.20+/-3.86 vs. 15.23+/-5.68, P < 0.05), the average EN interruption time was significantly longer in each patient (hours: 6.38+/-3.59 vs. 4.96+/-2.28, P < 0.05), and the incidence of gastrointestinal bleeding was significantly decreased (19.04% vs. 24.00%, P < 0.05), the incidence of VAP was significantly decreased (18.64% vs. 21.36%, P < 0.05), and the antibiotics accounted for a significant decrease (62.43% vs. 76.59%, P < 0.05), but there was no significant difference in the proportion of drugs and monthly average hospitalization expenses [drug ratio: 36.88% vs. 38.42%, monthly average hospitalization cost (ten thousand yuan): 4.36+/-0.57 vs. 4.39+/-0.49, both P > 0.05]. CONCLUSIONS: For the patients with tracheotomy and long-term MV of ICU, the enteral nutrition tolerance assessment standardized process management can improve the nutritional status, reduce the incidence of nosocomial infections, and improve the prognosis of the patients.
ESTHER : Wang_2018_Zhonghua.Wei.Zhong.Bing.Ji.Jiu.Yi.Xue_30_1173
PubMedSearch : Wang_2018_Zhonghua.Wei.Zhong.Bing.Ji.Jiu.Yi.Xue_30_1173
PubMedID: 30592953

Title : Guided Evolution of Recombinant Bombyx mori Acetylcholinesterase II by Homology Modeling to Change Pesticide Sensitivity -
Author(s) : Cai J , Wang B , Li J , Chen Z , Rao M , Muyldermans S , Hua X , Xie X , Wang H , Yang J , Xu Z , Shen Y , Sun Y
Ref : Int J Mol Sci , 19 : , 2018
PubMedID: 30373269

Title : Efficient resolution of (R,S)-1-(1-naphthyl)ethylamine by Candida antarctica lipase B in ionic liquids - Wang_2018_Mol.Catal_448_116
Author(s) : Wang B , Zhang C , He Q , Qin H , Liang G , Liu W
Ref : Molecular Catalysis , 448 :116 , 2018
Abstract : The resolution of (R,S)-1-(1-naphthyl)ethylamine ((R,S)-NEA) by Candida antarctica lipase B (CALB) in ionic liquids (ILs) containing 1-alkyl-3-methylimidazolium cations ([Cnmim]+) and [Tf2N]-, [BF4]-, and [PF6]- anions was investigated. When the alkyl chain on the cation contained less than six carbons, the lipase activity corresponded with the hydrophobicity of the ILs, but further increase in the chain length suppressed the enzyme activity. The enzyme activity decreased depending on the anion, where [Tf2N]- > [PF6]- > [BF4]-. The effects of acyl donors, pH, temperature, water activity, and substrate concentration on the resolution were determined. Under the optimal conditions, the conversion of (R,S)-NEA and enantiomer excess of (R)-n-octyl acyl-NEA was 49.3% and 99.2%, respectively. The resolution kinetics of (R,S)-NEA by CALB in [C6mim][Tf2N] were studied and a ping-pong mechanism with a two substrate inhibition model was selected. The kinetic parameters of the fitting results were as follows: Michaelis constant of (R,S)-NEA Kma, 461.8 mmol/L; Michaelis constant of vinyl n-octanoateKmb, 262.1 mmol/L; inhibition constant of (R,S)-NEA Kia, 8737.2 mmol/L; inhibition constant of vinyl n-octanoateKib, 62336.8 mmol/L; maximum reaction rate rmax, 0.352 mmol/(mg min). Moreover, circular dichroism revealed that incubation of CALB in [C6mim][Tf2N] resulted in increased beta-sheet content; its secondary structure was stable.
ESTHER : Wang_2018_Mol.Catal_448_116
PubMedSearch : Wang_2018_Mol.Catal_448_116
PubMedID:

Title : Asymmetric Construction of a Multi-Pharmacophore-Containing Dispirotriheterocyclic Scaffold and Identification of a Human Carboxylesterase 1 Inhibitor - Bao_2018_Org.Lett_20_3394
Author(s) : Bao X , Wei S , Qian X , Qu J , Wang B , Zou L , Ge G
Ref : Org Lett , 20 :3394 , 2018
Abstract : A catalytic asymmetric [3 + 2] cyclization of novel 4-isothiocyanato pyrazolones and isatin-derived ketimines was developed, delivering a wide range of intriguing dispirotriheterocyclic products in high yield with excellent diastereoselectivity and enantioselectivity. A chiral sulfoxide derivative of this dispirocyclic product was identified to be a promising hit of the human carboxylesterase 1 inhibitor, and the significant difference of the activity between two enantiomers emphasized the importance of this asymmetric process.
ESTHER : Bao_2018_Org.Lett_20_3394
PubMedSearch : Bao_2018_Org.Lett_20_3394
PubMedID: 29786435

Title : Rice DWARF14 acts as an unconventional hormone receptor for strigolactone - Yao_2018_J.Exp.Bot_69_2355
Author(s) : Yao R , Wang L , Li Y , Chen L , Li S , Du X , Wang B , Yan J , Li J , Xie D
Ref : J Exp Bot , 69 :2355 , 2018
Abstract : Strigolactones (SLs) act as an important class of phytohormones to regulate plant shoot branching, and also serve as rhizosphere signals to mediate interactions of host plants with soil microbes and parasitic weeds. SL receptors in dicots, such as DWARF14 in Arabidopsis (AtD14), RMS3 in pea, and ShHTL7 in Striga, serve as unconventional receptors that hydrolyze SLs into a D-ring-derived intermediate CLIM and irreversibly bind CLIM to trigger SL signal transduction. Here, we show that D14 from the monocot rice can complement Arabidopsis d14 mutant and interact with the SL signaling components in Arabidopsis. Our results further reveal that rice D14, similar to SL receptors in dicots, also serves as an unconventional hormone receptor that generates and irreversibly binds the active form of SLs. These findings uncover the conserved functions of D14 proteins in monocots and dicots.
ESTHER : Yao_2018_J.Exp.Bot_69_2355
PubMedSearch : Yao_2018_J.Exp.Bot_69_2355
PubMedID: 29365172

Title : Organic matter modifies biochemical but not most behavioral responses of the clam Ruditapes philippinarum to nanosilver exposure - Zhang_2018_Mar.Environ.Res_133_105
Author(s) : Zhang T , Pan JF , Hunt DE , Chen M , Wang B
Ref : Mar Environ Research , 133 :105 , 2018
Abstract : Adsorption of dissolved organic matter (DOM) can alter the environmental fate, bioavailability and toxicity of silver nanoparticles (Ag NPs). However, a number of questions remain about DOM's ability to modify nanotoxicity. Here, we examine the impact of humic acid (HA, as a model DOM) on the toxicity of Ag NPs (10 mug L(-1)) in the marine clam Ruditapes philippinarum. Results showed that DOM additions to Ag NP treatments reduce clam silver tissue burdens and the oxidative stress response. However, HA does not significantly affect the impact of Ag NPs on clam acetylcholinesterase activity and feeding behavior (measured as filtration rate). Overall, the integrated biological response index supports the conclusion that humic acid reduces the toxicity of Ag NPs, clearly indicating the importance of considering environmental factors when assessing potential risks posed by nanomaterials in natural settings.
ESTHER : Zhang_2018_Mar.Environ.Res_133_105
PubMedSearch : Zhang_2018_Mar.Environ.Res_133_105
PubMedID: 29254654

Title : Extensive intraspecific gene order and gene structural variations between Mo17 and other maize genomes - Sun_2018_Nat.Genet_50_1289
Author(s) : Sun S , Zhou Y , Chen J , Shi J , Zhao H , Song W , Zhang M , Cui Y , Dong X , Liu H , Ma X , Jiao Y , Wang B , Wei X , Stein JC , Glaubitz JC , Lu F , Yu G , Liang C , Fengler K , Li B , Rafalski A , Schnable PS , Ware DH , Buckler ES , Lai J
Ref : Nat Genet , 50 :1289 , 2018
Abstract : Maize is an important crop with a high level of genome diversity and heterosis. The genome sequence of a typical female line, B73, was previously released. Here, we report a de novo genome assembly of a corresponding male representative line, Mo17. More than 96.4% of the 2,183 Mb assembled genome can be accounted for by 362 scaffolds in ten pseudochromosomes with 38,620 annotated protein-coding genes. Comparative analysis revealed large gene-order and gene structural variations: approximately 10% of the annotated genes were mutually nonsyntenic, and more than 20% of the predicted genes had either large-effect mutations or large structural variations, which might cause considerable protein divergence between the two inbred lines. Our study provides a high-quality reference-genome sequence of an important maize germplasm, and the intraspecific gene order and gene structural variations identified should have implications for heterosis and genome evolution.
ESTHER : Sun_2018_Nat.Genet_50_1289
PubMedSearch : Sun_2018_Nat.Genet_50_1289
PubMedID: 30061735
Gene_locus related to this paper: maize-a0a1d6kqc9 , maize-k7v3i9 , maize-b6u9v9 , maize-a0a3l6e780 , maize-b4fv80 , maize-a0a3l6d913

Title : High level expression and characterization of tannase tan7 using Aspergillus niger SH-2 with low-background endogenous secretory proteins as the host - Liu_2018_Protein.Expr.Purif_144_71
Author(s) : Liu F , Wang B , Ye Y , Pan L
Ref : Protein Expr Purif , 144 :71 , 2018
Abstract : Tannin acyl hydrolase (tannase, EC3.1.1.20) catalyzes the hydrolysis of hydrolyzable tannins. It is used in the manufacture of instant tea and in the production of gallic acid. In this study, we reported that the overexpression, purification and characterization of an Aspergillus niger tannase. The tannase gene was cloned from A. niger SH-2 and expressed in the A. niger strain Bdel4 which is low-background of secreted proteins. The recombinant tannase was purified by desalting, followed by gel filtration for characterization. The tannase activity achieved 111.5 U/mL at 168 h, and the purity of the enzyme in the broth supernatant was estimated to be over 70%. The optimum temperature and pH of the recombinant tannase was -40 degreesC and 7.0, respectively. The tannase activity was inhibited by Mg(2+), Ca(2+), Cu(2+), Ba(2+), Ni(2+) and EDTA, and was enhanced by Mn(2+) and Co(2+). Since A. niger is a GRAS microorganism, the recombinant tannase could be purification-free due to its high purity. The results of this study suggested that this recombinant strain could be subjected to large-scale production of A. niger tannase.
ESTHER : Liu_2018_Protein.Expr.Purif_144_71
PubMedSearch : Liu_2018_Protein.Expr.Purif_144_71
PubMedID: 29162409
Gene_locus related to this paper: aspnc-a2qir3

Title : Discovery and identification of O, O-diethyl O-(4-(5-phenyl-4, 5-dihydroisoxazol-3-yl) phenyl) phosphorothioate (XP-1408) as a novel mode of action of organophosphorus insecticides - Zeng_2017_Sci.Rep_7_3617
Author(s) : Zeng Z , Yan Y , Wang B , Liu N , Xu H
Ref : Sci Rep , 7 :3617 , 2017
Abstract : Organophosphorus (OP) insecticides play an important role in pest control. Many OP insecticides have been removed from the market because of their high toxicity to humans. We designed and synthesized a new OP insecticide with the goal of providing a low cost, and less toxic insecticide. The mode of action of O, O-diethyl O-(4-(5-phenyl-4, 5-dihydroisoxazol-3-yl) phenyl) phosphorothioate (XP-1408) was studied in Drosophila melanogaster. Bioassays showed that XP-1408 at a concentration of 50 mg/L delayed larval development. Molecular docking into Drosophila acetylcholinesterase (AChE) and voltage-gated sodium channels suggested that XP-1408 fitted into their active sites and could be inhibitory. Whole-cell patch clamp recordings indicated that XP-1408 exhibited synergistic effects involving the inhibition of cholinergic synaptic transmission and blockage of voltage-gated potassium (Kv) channels and sodium (Nav) channels. In conclusion, the multiple actions of XP-1408 rendered it as a lead compound for formulating OP insecticides with a novel mode of action.
ESTHER : Zeng_2017_Sci.Rep_7_3617
PubMedSearch : Zeng_2017_Sci.Rep_7_3617
PubMedID: 28620187

Title : Myricetin ameliorates scopolamine-induced memory impairment in mice via inhibiting acetylcholinesterase and down-regulating brain iron - Wang_2017_Biochem.Biophys.Res.Commun_490_336
Author(s) : Wang B , Zhong Y , Gao C , Li J
Ref : Biochemical & Biophysical Research Communications , 490 :336 , 2017
Abstract : The aim of our study was to investigate to investigate the effect of myricetin on Alzheimer's disease (AD) and its underlying mechanisms. In our study, Myricetin effectively attenuated Fe(2+)-induced cell death in SH-SY5Y cells in vitro. In a mouse model of AD, myricetin treatment significantly reversed scopolamine-induced cognitive deficits deriving from a novel action of inhibiting acetylcholinesterase (AChE) and down-regulating brain iron. Furthermore, Myricetin treatment reduced oxidative damage and increased antioxidant enzymes activity in mice. Interestingly, the effect of myricetin was largely abolished by high iron diet. Therefore we suggested that treatment with myricetin attenuated cognitive deficits in mice via inhibiting AChE and brain iron regulation. In addition, myricetin reduce iron contents may via inhibiting transferrin receptor 1 (TrR1) expression. In conclusion, accumulated data demonstrates that myricetin is a potential multifunctional drug for AD.
ESTHER : Wang_2017_Biochem.Biophys.Res.Commun_490_336
PubMedSearch : Wang_2017_Biochem.Biophys.Res.Commun_490_336
PubMedID: 28619513

Title : Genome sequence of the ectophytic fungus Ramichloridium luteum reveals unique evolutionary adaptations to plant surface niche - Wang_2017_BMC.Genomics_18_729
Author(s) : Wang B , Liang X , Gleason ML , Zhang R , Sun G
Ref : BMC Genomics , 18 :729 , 2017
Abstract : BACKGROUND: Ectophytic fungi occupy the waxy plant surface, an extreme environment characterized by prolonged desiccation, nutrient limitation, and exposure to solar radiation. The nature of mechanisms that facilitate adaptation to this environment remains unclear. In this study, we sequenced the complete genome of an ectophytic fungus, Ramichloridium luteum, which colonizes the surface of apple fruit, and carried out comparative genomic and transcriptome analysis.
RESULTS: The R. luteum genome was 28.18 Mb and encoded 9466 genes containing 1.85% repetitive elements. Compared with cell-penetrating pathogens, genes encoding plant cell wall degrading enzymes (PCWDEs), PTH11-like G protein-coupled receptors (GPCRs) and effectors were drastically reduced. In contrast, genes encoding cutinases and secretory lipases were strikingly expanded, and four of nine secretory lipases were probably acquired by horizontal gene transfer from Basidiomycota. Transcriptomic analysis revealed elevated expression of genes involved in cuticle degradation (cutinase, secretory lipase) and stress responses (melanin biosynthesis, aquaporins, lysozymes and HOG pathway).
CONCLUSIONS: Taken together, our results highlight genomic features associated with evolution of surface niche adaptation by the ectophytic fungus R. luteum, namely the contraction of PCWDEs, PTH11-like GPCRs and effectors, and the expansion of cuticle degradation and stress tolerance.
ESTHER : Wang_2017_BMC.Genomics_18_729
PubMedSearch : Wang_2017_BMC.Genomics_18_729
PubMedID: 28915794

Title : DWARF14, A Receptor Covalently Linked with the Active Form of Strigolactones, Undergoes Strigolactone-Dependent Degradation in Rice - Hu_2017_Front.Plant.Sci_8_1935
Author(s) : Hu Q , He Y , Wang L , Liu S , Meng X , Liu G , Jing Y , Chen M , Song X , Jiang L , Yu H , Wang B , Li J
Ref : Front Plant Sci , 8 :1935 , 2017
Abstract : Strigolactones (SLs) are the latest confirmed phytohormones that regulate shoot branching by inhibiting bud outgrowth in higher plants. Perception of SLs depends on a novel mechanism employing an enzyme-receptor DWARF14 (D14) that hydrolyzes SLs and becomes covalently modified. This stimulates the interaction between D14 and D3, leading to the ubiquitination and degradation of the transcriptional repressor protein D53. However, the regulation of SL perception in rice remains elusive. In this study, we provide evidences that D14 is ubiquitinated after SL treatment and degraded through the 26S proteasome system. The Lys280 site of the D14 amino acid sequence was important for SL-induced D14 degradation, but did not change the subcellular localization of D14 nor disturbed the interaction between D14 and D3, nor D53 degradation. Biochemical and genetic analysis indicated that the key amino acids in the catalytic center of D14 were essential for D14 degradation. We further showed that D14 degradation is dependent on D3 and is tightly correlated with protein levels of D53. These findings revealed that D14 degradation takes place following D53 degradation and functions as an important feedback regulation mechanism of SL perception in rice.
ESTHER : Hu_2017_Front.Plant.Sci_8_1935
PubMedSearch : Hu_2017_Front.Plant.Sci_8_1935
PubMedID: 29170677

Title : Association of PON1, P2Y12 and COX1 with Recurrent Ischemic Events in Patients with Extracranial or Intracranial Stenting - Li_2016_PLoS.One_11_e0148891
Author(s) : Li XQ , Ma N , Li XG , Wang B , Sun SS , Gao F , Mo DP , Song LG , Sun X , Liu L , Zhao XQ , Wang YL , Wang YJ , Zhao ZG , Miao ZR
Ref : PLoS ONE , 11 :e0148891 , 2016
Abstract : BACKGROUND AND PURPOSE: Short-term combined use of clopidogrel and aspirin improves cerebrovascular outcomes in patients with symptomatic extracranial or intracranial stenosis. Antiplatelet non-responsiveness is related to recurrent ischemic events, but the culprit genetic variants responsible for the non-responsiveness have not been well studied. We aimed to identify the genetic variants associated with poor clinical outcomes.
METHODS: Patients with symptomatic extracranial or intracranial stenosis scheduled for stenting and receiving dual antiplatelets (clopidogrel 75 mg and aspirin 100 mg daily) for at least 5 days before intervention were enrolled. Ischemic events including recurrent transient ischemic attack, stroke, myocardial infarction, and vascular-related mortality within 12 months follow-up were recorded. We examined the influence of genetic polymorphisms on treatment outcome in our patients.
RESULTS: A total of 268 patients were enrolled into our study and ischemic events were observed in 39 patients. For rs662 of paraoxonase 1 (PON1), allele C was associated with an increased risk of ischemic events (OR = 1.64, 95%CI = 1.03-2.62, P = 0.029). The A-allele carriers of rs2046934 of P2Y12 had a significant association with adverse events (OR = 2.01, 95%CI = 1.10-3.67, P = 0.041). The variant T-allele of cyclooxygenase-1 (COX1) rs1330344 significantly increased the risk of recurrent clinical events (OR = 1.85, 95%CI = 1.12-3.03, P = 0.017). The other single nucleotide polymorphism (SNP) had no association with ischemic events.
CONCLUSIONS: PON1, P2Y12 and COX1 polymorphisms were associated with poorer vascular outcomes. Testing for these polymorphisms may be valuable in the identification of patients at risk for recurrent ischemic events.
ESTHER : Li_2016_PLoS.One_11_e0148891
PubMedSearch : Li_2016_PLoS.One_11_e0148891
PubMedID: 26870959

Title : Esterase-Sensitive Prodrugs with Tunable Release Rates and Direct Generation of Hydrogen Sulfide - Zheng_2016_Angew.Chem.Int.Ed.Engl_55_4514
Author(s) : Zheng Y , Yu B , Ji K , Pan Z , Chittavong V , Wang B
Ref : Angew Chem Int Ed Engl , 55 :4514 , 2016
Abstract : Prodrugs that release hydrogen sulfide upon esterase-mediated cleavage of an ester group followed by lactonization are described herein. By modifying the ester group and thus its susceptibility to esterase, and structural features critical to the lactonization rate, H2 S release rates can be tuned. Such prodrugs directly release hydrogen sulfide without the involvement of perthiol species, which are commonly encountered with existing H2 S donors. Additionally, such prodrugs can easily be conjugated to another non-steroidal anti-inflammatory agent, leading to easy synthesis of hybrid prodrugs. As a biological validation of the H2 S prodrugs, the anti-inflammatory effects of one such prodrug were examined by studying its ability to inhibit LPS-induced TNF-alpha production in RAW 264.7 cells. This type of H2 S prodrugs shows great potential as both research tools and therapeutic agents.
ESTHER : Zheng_2016_Angew.Chem.Int.Ed.Engl_55_4514
PubMedSearch : Zheng_2016_Angew.Chem.Int.Ed.Engl_55_4514
PubMedID: 26822005

Title : Graveoline Analogs Exhibiting Selective Acetylcholinesterase Inhibitory Activity as Potential Lead Compounds for the Treatment of Alzheimer's Disease - Li_2016_Molecules_21_132
Author(s) : Li Z , Mu C , Wang B , Jin J
Ref : Molecules , 21 :132 , 2016
Abstract : This study designed and synthesized a series of new graveoline analogs on the basis of the structural characteristics of acetylcholinesterase (AChE) dual-site inhibitors. The activity of these analogs was also evaluated. Results showed that the synthesized graveoline analogs displayed stronger inhibitory activity against AChE and higher selectivity than butyrylcholine esterase (BuChE) (Selectivity Index from 45 to 486). When the two sites in the graveoline parent ring substituting phenyl and amino terminal had six chemical bonds (n = 3) and the terminal amino was piperidine, compound 5c showed the best activity. Furthermore, the mechanism of action and binding mode were explored by enzyme kinetic simulation, molecular docking, and thioflavin T-based fluorometric assay. Cytotoxicity assay showed that the low concentration of the analogs did not affect the viability of the neurocyte SH-SY5Y.
ESTHER : Li_2016_Molecules_21_132
PubMedSearch : Li_2016_Molecules_21_132
PubMedID: 26805806

Title : Characterization of a novel highly thermostable esterase from the Gram-positive soil bacterium Streptomyces lividans TK64 - Wang_2016_Biotechnol.Appl.Biochem_63_334
Author(s) : Wang B , Wang A , Cao Z , Zhu G
Ref : Biotechnol Appl Biochem , 63 :334 , 2016
Abstract : A novel esterase gene (estW) from soil bacterium Streptomyces lividans TK64 was successfully cloned using a pair of homologous primers. The estW gene encoded a protein (EstW) of 289 amino acid residues with a predicted molecular weight of 31.43 kDa. Sequence alignment revealed that EstW show relatively high levels of homology to other lipolytic enzymes characterized from Streptomyces and phylogenetic analysis suggested EstW belongs to the bacterial lipase/esterase family I. The estW gene was expressed at a high level in Escherichia coli and the recombinant enzyme was purified to homogeneity. The purified EstW was characterized via hydrolysis of various p-nitrophenyl esters and the best substrate was found to be p-nitrophenyl acetate (pNPA). Maximal activity of the recombinant protein was observed at pH 8.0 and 50 degrees C with pNPA as the substrate. The calculated activation energy (Ea ) of the esterase reaction was 9.12 kcal/mol. Half-life of EstW at 95 degrees C was approximately 12.5 H, making it the most thermostable esterase among all of the known lipolytic enzymes from Streptomyces, and the thermostability of EstW was similar to those of some enzymes characterized from the thermophilic bacteria. EstW exhibited relatively high tolerance to several detergents and required no cations for its maximal activity. The unique properties of EstW, namely its high thermostability and stability in the presence of organic solvents, may render it a potential candidate for industrial applications.
ESTHER : Wang_2016_Biotechnol.Appl.Biochem_63_334
PubMedSearch : Wang_2016_Biotechnol.Appl.Biochem_63_334
PubMedID: 26621184
Gene_locus related to this paper: strco-SCO1265

Title : The Pseudomonas aeruginosa Type VI Secretion PGAP1-like Effector Induces Host Autophagy by Activating Endoplasmic Reticulum Stress - Jiang_2016_Cell.Rep_16_1502
Author(s) : Jiang F , Wang X , Wang B , Chen L , Zhao Z , Waterfield NR , Yang G , Jin Q
Ref : Cell Rep , 16 :1502 , 2016
Abstract : Pseudomonas aeruginosa is an opportunistic pathogen that regularly causes nosocomial infections in hospitalized patients. The type VI secretion system (T6SS) is responsible for the secretion of numerous virulence effector proteins that can both interfere with competing microbes and manipulate host cells.sHere, we report a detailed investigation of a P.saeruginosa H2-T6SS-dependent phospholipase effector, TplE, which acts as a trans-kingdom toxin. Delivery of TplE to the periplasmic space of rival bacteria leads to growth inhibition. Importantly, TplE, also contains a eukaryotic PGAP1-like domain, which targets the host ER apparatus, ultimately leading to disruption of the ER. TplE activity leads to the activation of the unfolded protein response (UPR) through the IRE1alpha-XBP1 pathway, enhancing autophagic flux. These findings indicate that this T6SS-delivered phospholipase effector is active against both prokaryotic and eukaryotic cellular targets, highlighting the T6SS as a versatile weapon in the Pseudomonas arsenal.
ESTHER : Jiang_2016_Cell.Rep_16_1502
PubMedSearch : Jiang_2016_Cell.Rep_16_1502
PubMedID: 27477276
Gene_locus related to this paper: pseae-PA1510

Title : Inhibitory effects of SKF96365 on the activities of K(+) channels in mouse small intestinal smooth muscle cells - Tanahashi_2016_J.Vet.Med.Sci_78_203
Author(s) : Tanahashi Y , Wang B , Murakami Y , Unno T , Matsuyama H , Nagano H , Komori S
Ref : J Vet Med Sci , 78 :203 , 2016
Abstract : In order to investigate the effects of SKF96365 (SKF), which is a non-selective cationic channel blocker, on K(+) channel currents, we recorded currents through ATP sensitive K(+) (IKATP), voltage-gated K(+) (IKv) and Ca(2+) activated K(+) channels (IBK) in the absence and presence of SKF in single small intestinal myocytes of mice with patch-clamp techniques. SKF (10 microM) reversibly abolished IKATP that was induced by cromakalim (10 microM), which is a selective ATP sensitive K(+) channel opener. These inhibitory effects were induced in a concentration-dependent and voltage-independent manner. The 50% inhibitory concentration (IC50) was 0.85 microM, which was obviously lower than that reported for the muscarinic cationic current. In addition, SKF (1 microM approximately the IC50 value in IKATP suppression) reversibly inhibited the IKv that was induced by repetitive depolarizing pulses from -80 to 20 mV. However, the extent of the inhibitory effects was only ~30%. In contrast, SKF (1 microM) had no significant effects on spontaneous transient IBK and caffeine-induced IBK. These results indicated that SKF inhibited ATP sensitive K(+) channels and voltage-gated K(+) channels, with the ATP sensitive K(+) channels being more sensitive than the voltage-gated K(+) channels. These inhibitory effects on K(+) channels should be considered when SKF is used as a cationic channel blocker.
ESTHER : Tanahashi_2016_J.Vet.Med.Sci_78_203
PubMedSearch : Tanahashi_2016_J.Vet.Med.Sci_78_203
PubMedID: 26498720

Title : Critical thresholds of liver function parameters for ketosis prediction in dairy cows using receiver operating characteristic (ROC) analysis - Sun_2015_Vet.Q_35_159
Author(s) : Sun Y , Wang B , Shu S , Zhang H , Xu C , Wu L , Xia C
Ref : Vet Q , 35 :159 , 2015
Abstract : BACKGROUND: Fatty liver syndrome and ketosis are important metabolic disorders in high-producing cows during early lactation with fatty liver usually preceding ketosis. To date, parameters for early prediction of the risk of ketosis have not been investigated in China. OBJECTIVE: To determine the predictive value of some parameters on the risk of ketosis in China. ANIMALS AND
METHODS: In a descriptive study, 48 control and 32 ketotic Holstein Friesian cows were randomly selected from one farm with a serum beta-hydroxybutyrate (BHBA) concentration of 1.20 mmol/L as cutoff point. The risk prediction thresholds for ketosis were determined by receiver operating characteristic (ROC) analysis.
RESULTS: In line with a high BHBA concentration, blood glucose concentration was significantly lower in ketotic cows compared to control animals (2.77 +/- 0.24 versus 3.34 +/- 0.03 mmol/L; P = 0.02). Thresholds were more than 0.76 mmol/L for nonesterified fatty acids (NEFA, with 65% sensitivity and 92% specificity), more than 104 U/L for aspartate aminotransferase (AST, 74% and 85%, respectively), less than 140 U/L for cholinesterase (CHE, 75% and 59%, respectively), and more than 3.3 micromol/L for total bilirubin (TBIL, 58% and 83%, respectively). There were significant correlations between BHBA and glucose (R = -4.74), or CHE (R = -0.262), BHBA and NEFA (R = 0.520), or AST (R = 0.525), or TBIL (R = 0.278), or direct bilirubin (DBIL, R = 0.348).
CONCLUSIONS: AST, CHE, TBIL and NEFA may be useful parameters for risk prediction of ketosis. CLINICAL IMPORTANCE: This study might be of value in addressing novel directions for future research on the connection between ketosis and liver dysfunction.
ESTHER : Sun_2015_Vet.Q_35_159
PubMedSearch : Sun_2015_Vet.Q_35_159
PubMedID: 25831953

Title : Strigolactone Signaling in Arabidopsis Regulates Shoot Development by Targeting D53-Like SMXL Repressor Proteins for Ubiquitination and Degradation - Wang_2015_Plant.Cell_27_3128
Author(s) : Wang L , Wang B , Jiang L , Liu X , Li X , Lu Z , Meng X , Wang Y , Smith SM , Li J
Ref : Plant Cell , 27 :3128 , 2015
Abstract : Strigolactones (SLs) are carotenoid-derived phytohormones that control many aspects of plant development, including shoot branching, leaf shape, stem secondary thickening, and lateral root growth. In rice (Oryza sativa), SL signaling requires the degradation of DWARF53 (D53), mediated by a complex including D14 and D3, but in Arabidopsis thaliana, the components and mechanism of SL signaling involving the D3 ortholog MORE AXILLARY GROWTH2 (MAX2) are unknown. Here, we show that SL-dependent regulation of shoot branching in Arabidopsis requires three D53-like proteins, SUPPRESSOR OF MORE AXILLARY GROWTH2-LIKE6 (SMXL6), SMXL7, and SMXL8. The smxl6 smxl7 smxl8 triple mutant suppresses the highly branched phenotypes of max2 and the SL-deficient mutant max3. Overexpression of a mutant form of SMXL6 that is resistant to SL-induced ubiquitination and degradation enhances shoot branching. Exogenous application of the SL analog rac-GR24 causes ubiquitination and degradation of SMXL6, 7, and 8; this requires D14 and MAX2. D53-like SMXLs form complexes with MAX2 and TOPLESS-RELATED PROTEIN2 (TPR2) and interact with D14 in a GR24-responsive manner. Furthermore, D53-like SMXLs exhibit TPR2-dependent transcriptional repression activity and repress the expression of BRANCHED1. Our findings reveal that in Arabidopsis, D53-like SMXLs act with TPR2 to repress transcription and so allow lateral bud outgrowth but that SL-induced degradation of D53-like proteins activates transcription to inhibit outgrowth.
ESTHER : Wang_2015_Plant.Cell_27_3128
PubMedSearch : Wang_2015_Plant.Cell_27_3128
PubMedID: 26546446

Title : Genome-wide analysis of esterase-like genes in the striped rice stem borer, Chilo suppressalis - Wang_2015_Genome_58_323
Author(s) : Wang B , Wang Y , Zhang Y , Han P , Li F , Han Z
Ref : Genome , 58 :323 , 2015
Abstract : The striped rice stem borer, Chilo suppressalis, a destructive pest of rice, has developed high levels of resistance to certain insecticides. Esterases are reported to be involved in insecticide resistance in several insects. Therefore, this study systematically analyzed esterase-like genes in C. suppressalis. Fifty-one esterase-like genes were identified in the draft genomic sequences of the species, and 20 cDNA sequences were derived which encoded full- or nearly full-length proteins. The putative esterase proteins derived from these full-length genes are overall highly diversified. However, key residues that are functionally important including the serine residue in the active site are conserved in 18 out of the 20 proteins. Phylogenetic analysis revealed that most of these genes have homologues in other lepidoptera insects. Genes CsuEst6, CsuEst10, CsuEst11, and CsuEst51 were induced by the insecticide triazophos, and genes CsuEst9, CsuEst11, CsuEst14, and CsuEst51 were induced by the insecticide chlorantraniliprole. Our results provide a foundation for future studies of insecticide resistance in C. suppressalis and for comparative research with esterase genes from other insect species.
ESTHER : Wang_2015_Genome_58_323
PubMedSearch : Wang_2015_Genome_58_323
PubMedID: 26285093

Title : Identification of Alp1U and Lom6 as epoxy hydrolases and implications for kinamycin and lomaiviticin biosynthesis - Wang_2015_Nat.Commun_6_7674
Author(s) : Wang B , Guo F , Ren J , Ai G , Aigle B , Fan K , Yang K
Ref : Nat Commun , 6 :7674 , 2015
Abstract : The naturally occurring diazobenzofluorenes, kinamycins, fluostatins and lomaiviticins, possess highly oxygenated A-rings, via which the last forms a dimeric pharmacophore. However, neither the A-ring transformation nor the dimerization mechanisms have been explored thus far. Here we propose a unified biosynthetic logic for the three types of antibiotics and verify one key reaction via detailed genetic and enzymatic experiments. Alp1U and Lom6 from the kinamycin and lomaiviticin biosynthesis, respectively, are shown to catalyse epoxy hydrolysis on a substrate that is obtained by chemical deacetylation of a kinamycin-pathway-derived intermediate. Thus, our study provides the first evidence for the existence of an epoxy intermediate in lomaiviticin biosynthesis. Furthermore, our results suggest that the dimerization in the lomaiviticin biosynthesis proceeds after dehydration of a product generated by Lom6.
ESTHER : Wang_2015_Nat.Commun_6_7674
PubMedSearch : Wang_2015_Nat.Commun_6_7674
PubMedID: 26134788
Gene_locus related to this paper: 9actn-h1q5r8 , stram-q1rqu8

Title : Identification of Genes Conferring Tolerance to Lignocellulose-Derived Inhibitors by Functional Selections in Soil Metagenomes - Forsberg_2015_Appl.Environ.Microbiol_82_528
Author(s) : Forsberg KJ , Patel S , Witt E , Wang B , Ellison TD , Dantas G
Ref : Applied Environmental Microbiology , 82 :528 , 2015
Abstract : The production of fuels or chemicals from lignocellulose currently requires thermochemical pretreatment to release fermentable sugars. These harsh conditions also generate numerous small-molecule inhibitors of microbial growth and fermentation, limiting production. We applied small-insert functional metagenomic selections to discover genes that confer microbial tolerance to these inhibitors, identifying both individual genes and general biological processes associated with tolerance to multiple inhibitory compounds. Having screened over 248 Gb of DNA cloned from 16 diverse soil metagenomes, we describe gain-of-function tolerance against acid, alcohol, and aldehyde inhibitors derived from hemicellulose and lignin, demonstrating that uncultured soil microbial communities hold tremendous genetic potential to address the toxicity of pretreated lignocellulose. We recovered genes previously known to confer tolerance to lignocellulosic inhibitors as well as novel genes that confer tolerance via unknown functions. For instance, we implicated galactose metabolism in overcoming the toxicity of lignin monomers and identified a decarboxylase that confers tolerance to ferulic acid; this enzyme has been shown to catalyze the production of 4-vinyl guaiacol, a valuable precursor to vanillin production. These metagenomic tolerance genes can enable the flexible design of hardy microbial catalysts, customized to withstand inhibitors abundant in specific bioprocessing applications.
ESTHER : Forsberg_2015_Appl.Environ.Microbiol_82_528
PubMedSearch : Forsberg_2015_Appl.Environ.Microbiol_82_528
PubMedID: 26546427
Gene_locus related to this paper: 9bact-a0a0u2zp04

Title : The Genome Sequence of Saccharomyces eubayanus and the Domestication of Lager-Brewing Yeasts - Baker_2015_Mol.Biol.Evol_32_2818
Author(s) : Baker E , Wang B , Bellora N , Peris D , Hulfachor AB , Koshalek JA , Adams M , Libkind D , Hittinger CT
Ref : Molecular Biology Evolution , 32 :2818 , 2015
Abstract : The dramatic phenotypic changes that occur in organisms during domestication leave indelible imprints on their genomes. Although many domesticated plants and animals have been systematically compared with their wild genetic stocks, the molecular and genomic processes underlying fungal domestication have received less attention. Here, we present a nearly complete genome assembly for the recently described yeast species Saccharomyces eubayanus and compare it to the genomes of multiple domesticated alloploid hybrids of S. eubayanus x S. cerevisiae (S. pastorianus syn. S. carlsbergensis), which are used to brew lager-style beers. We find that the S. eubayanus subgenomes of lager-brewing yeasts have experienced increased rates of evolution since hybridization, and that certain genes involved in metabolism may have been particularly affected. Interestingly, the S. eubayanus subgenome underwent an especially strong shift in selection regimes, consistent with more extensive domestication of the S. cerevisiae parent prior to hybridization. In contrast to recent proposals that lager-brewing yeasts were domesticated following a single hybridization event, the radically different neutral site divergences between the subgenomes of the two major lager yeast lineages strongly favor at least two independent origins for the S. cerevisiae x S. eubayanus hybrids that brew lager beers. Our findings demonstrate how this industrially important hybrid has been domesticated along similar evolutionary trajectories on multiple occasions.
ESTHER : Baker_2015_Mol.Biol.Evol_32_2818
PubMedSearch : Baker_2015_Mol.Biol.Evol_32_2818
PubMedID: 26269586
Gene_locus related to this paper: saceu-a0a0l8rcq4

Title : Expression, purification and characterization of a functional, recombinant, cold-active lipase (LipA) from psychrotrophic Yersinia enterocolitica - Ji_2015_Protein.Expr.Purif_115_125
Author(s) : Ji X , Li S , Wang B , Zhang Q , Lin L , Dong Z , Wei Y
Ref : Protein Expr Purif , 115 :125 , 2015
Abstract : A novel cold-active lipase gene encoding 294 amino acid residues was obtained from the Yersinia enterocolitica strain KM1. Sequence alignment and phylogenetic analysis revealed that this novel lipase is a new member of the bacterial lipase family I.1. The lipase shares the conserved GXSXG motif and catalytic triad Ser85-Asp239-His261. The recombinant protein LipA was solubly and heterogeneously expressed in Escherichia coli, purified by Ni-affinity chromatography, and then characterized. LipA was active over a broad range spanning 15-60 degrees C with an optimum activity at 25 degrees C and across a wide pH range from 5.0 to 11.0 with an optimum activity at pH 7.5. The molecular weight was estimated to be 34.2KDa. The lipase could be activated by Mg(2+) and a low concentration (10%) of ethanol, dimethyl sulfoxide, methanol and acetonitrile, whereas it was strongly inhibited by Zn(2+), Cu(2+) and Mn(2+). This cold-active lipase may be a good candidate for detergents and biocatalysts at low temperature.
ESTHER : Ji_2015_Protein.Expr.Purif_115_125
PubMedSearch : Ji_2015_Protein.Expr.Purif_115_125
PubMedID: 26256062

Title : N-myc downstream regulated gene 1 acts as a tumor suppressor in ovarian cancer - Wang_2014_Oncol.Rep_31_2279
Author(s) : Wang B , Li J , Ye Z , Li Z , Wu X
Ref : Oncol Rep , 31 :2279 , 2014
Abstract : Although implicated in a number of tumor types, the role of N-myc downstream regulated gene 1 (NDRG1) in ovarian cancer (OC) is unclear. In the present study, we used short hairpin RNA (shRNA) to silence NDRG1 in the OC cell line OVCAR3 and assessed the effect of its knockdown on cell morphology, proliferation, colony formation, migration and invasion. To complement these knockdown studies, we overexpressed NDRG1 in the same cell line. We found that NDRG1 knockdown significantly enhanced OVCAR3 proliferation, migration and invasion; however, there were no apparent changes in cell morphology. We also examined the effect in vivo and found that NDRG1 depletion promoted OVCAR3 xenograft growth in nude mice. In accordance with these data, we found that NDRG1 overexpression decreased proliferation, adhesion and apoptosis, and induced G0/G1 cell cycle arrest in OVCAR3 cells; expression of p21 and p53 was also increased. In conclusion, we demonstrated that NDRG1 acts as a tumor suppressor in ovarian carcinogenesis and may be a potential therapeutic target in this disease.
ESTHER : Wang_2014_Oncol.Rep_31_2279
PubMedSearch : Wang_2014_Oncol.Rep_31_2279
PubMedID: 24626771

Title : The adverse effects of phoxim exposure in the midgut of silkworm, Bombyx mori - Gu_2014_Chemosphere_96_33
Author(s) : Gu Z , Zhou Y , Xie Y , Li F , Ma L , Sun S , Wu Y , Wang B , Wang J , Hong F , Shen W , Li B
Ref : Chemosphere , 96 :33 , 2014
Abstract : The silkworm is an important economic insect. Poisoning of silkworms by organophosphate pesticides causes tremendous loss to the sericulture. In this study, Solexa sequencing technology was performed to profile the gene expression changes in the midgut of silkworms in response to 24h of phoxim exposure and the impact on detoxification, apoptosis and immune defense were addressed. The results showed that 254 genes displayed at least 2.0-fold changes in expression levels, with 148 genes up-regulated and 106 genes down-regulated. Cytochrome P450 played an important role in detoxification. Histopathology examination and transmission electron microscope revealed swollen mitochondria and disappearance of the cristae of mitochondria, which are the important features in insect apoptotic cells. Cytochrome C release from mitochondria into the cytoplasm was confirmed. In addition, the Toll and immune deficiency (IMD) signal pathways were all inhibited using qRT-PCR. Our results could help better understand the impact of phoxim exposure on silkworm.
ESTHER : Gu_2014_Chemosphere_96_33
PubMedSearch : Gu_2014_Chemosphere_96_33
PubMedID: 23899924

Title : Complete Genome Sequence of Cronobacter sakazakii Strain CMCC 45402 - Zhao_2014_Genome.Announc_2_e01139
Author(s) : Zhao Z , Wang L , Wang B , Liang H , Ye Q , Zeng M
Ref : Genome Announc , 2 :e01139 , 2014
Abstract : Cronobacter sakazakii is considered to be an important pathogen involved in life-threatening neonatal infections. Here, we report the annotated complete genome sequence of C. sakazakii strain CMCC 45402, obtained from a milk sample in China. The major findings from the genomic analysis provide a better understanding of the isolates from China.
ESTHER : Zhao_2014_Genome.Announc_2_e01139
PubMedSearch : Zhao_2014_Genome.Announc_2_e01139
PubMedID: 24435860
Gene_locus related to this paper: cros8-a7mle4 , cros8-a7mft0 , 9entr-k7zz64

Title : An ultra-sensitive acetylcholinesterase biosensor based on reduced graphene oxide-Au nanoparticles-beta-cyclodextrin\/Prussian blue-chitosan nanocomposites for organophosphorus pesticides detection - Zhao_2014_Biosens.Bioelectron_65C_23
Author(s) : Zhao H , Ji X , Wang B , Wang N , Li X , Ni R , Ren J
Ref : Biosensors & Bioelectronics , 65C :23 , 2014
Abstract : This work reports a novel, ultrasensitive, and selective sensing platform based on a direct electrodeposition of electrochemical reduced graphene oxide (ERGO)-Au nanoparticles (AuNPs)-beta-cyclodextrin (beta-CD) and Prussian blue-chitosan (PB-CS) on glass carbon electrode (GCE) for efficiently fixed acetylcholinesterase (AChE) to fabricate organophosphorus pesticides (OPs) biosensor. The PB-CS not only effectively catalyzed the oxidation of thiocholine (TCh), but also shifted its oxidation potential from 0.68 to 0.2V, and accordingly the sensitivity of the biosensor was obviously improved. The synergistic effect between ERGO and AuNPs significantly promoted the electron transfer between PB and GCE, and remarkably enhanced the electrochemical oxidation of TCh. Besides, beta-CD could interact with substrate by reversible bonding, which is contribute to increase the enrichment of the substrate and improve the selectivity and sensitivity of the biosensor. The integration of ERGO-AuNPs-beta-CD with PB-CS provided an advantageous and high-performance platform for sensing applications. Based on the inhibition of OPs on AChE activity, the sensor showed wide linear ranges of 7.98-2.00x103pgmL-1 and 4.3-1.00x103pgmL-1 with low detection limits of 4.14pgmL-1 and 1.15pgmL-1 for malathion and carbaryl, respectively. The proposed biosensor exhibited short response time, good stability and high sensitivity, which can be used for direct analysis of practical samples.
ESTHER : Zhao_2014_Biosens.Bioelectron_65C_23
PubMedSearch : Zhao_2014_Biosens.Bioelectron_65C_23
PubMedID: 25461134

Title : Whole-genome sequencing of the snub-nosed monkey provides insights into folivory and evolutionary history - Zhou_2014_Nat.Genet_46_1303
Author(s) : Zhou X , Wang B , Pan Q , Zhang J , Kumar S , Sun X , Liu Z , Pan H , Lin Y , Liu G , Zhan W , Li M , Ren B , Ma X , Ruan H , Cheng C , Wang D , Shi F , Hui Y , Tao Y , Zhang C , Zhu P , Xiang Z , Jiang W , Chang J , Wang H , Cao Z , Jiang Z , Li B , Yang G , Roos C , Garber PA , Bruford MW , Li R
Ref : Nat Genet , 46 :1303 , 2014
Abstract : Colobines are a unique group of Old World monkeys that principally eat leaves and seeds rather than fruits and insects. We report the sequencing at 146x coverage, de novo assembly and analyses of the genome of a male golden snub-nosed monkey (Rhinopithecus roxellana) and resequencing at 30x coverage of three related species (Rhinopithecus bieti, Rhinopithecus brelichi and Rhinopithecus strykeri). Comparative analyses showed that Asian colobines have an enhanced ability to derive energy from fatty acids and to degrade xenobiotics. We found evidence for functional evolution in the colobine RNASE1 gene, encoding a key secretory RNase that digests the high concentrations of bacterial RNA derived from symbiotic microflora. Demographic reconstructions indicated that the profile of ancient effective population sizes for R. roxellana more closely resembles that of giant panda rather than its congeners. These findings offer new insights into the dietary adaptations and evolutionary history of colobine primates.
ESTHER : Zhou_2014_Nat.Genet_46_1303
PubMedSearch : Zhou_2014_Nat.Genet_46_1303
PubMedID: 25362486
Gene_locus related to this paper: rhibe-a0a2k6jtl7 , rhibe-ACHE , rhibe-a0a2k6k3y7 , rhibe-a0a2k6k493 , rhibe-a0a2k6lev4 , rhibe-a0a2k6lfa5 , rhibe-a0a2k6m6k8 , rhiro-a0a2k6p1u8 , rhiro-a0a2k6q1t8 , rhiro-a0a2k6q1w3 , rhibe-a0a2k6n5t9 , rhibe-a0a2k6ju46 , rhibe-a0a2k6kt48 , rhibe-a0a2k6llm5 , rhibe-a0a2k6lnt5 , rhiro-a0a2k6qzp6 , rhiro-a0a2k6q4a6 , rhibe-a0a2k6kn93 , rhibe-a0a2k6lm22 , rhibe-a0a2k6jwp8 , rhiro-a0a2k6qun2 , rhiro-a0a2k6nj56 , rhiro-a0a2k6n885 , rhiro-a0a2k6nnj4 , rhiro-a0a2k6n7n5 , rhibe-a0a2k6jvz4 , rhiro-a0a2k6nfk9 , rhiro-a0a2k6qjv0 , rhibe-a0a2k6jn19 , rhibe-a0a2k6k333 , rhibe-a0a2k6mff5

Title : Genome analysis of a major urban malaria vector mosquito, Anopheles stephensi - Jiang_2014_Genome.Biol_15_459
Author(s) : Jiang X , Peery A , Hall AB , Sharma A , Chen XG , Waterhouse RM , Komissarov A , Riehle MM , Shouche Y , Sharakhova MV , Lawson D , Pakpour N , Arensburger P , Davidson VL , Eiglmeier K , Emrich S , George P , Kennedy RC , Mane SP , Maslen G , Oringanje C , Qi Y , Settlage R , Tojo M , Tubio JM , Unger MF , Wang B , Vernick KD , Ribeiro JM , James AA , Michel K , Riehle MA , Luckhart S , Sharakhov IV , Tu Z
Ref : Genome Biol , 15 :459 , 2014
Abstract : BACKGROUND: Anopheles stephensi is the key vector of malaria throughout the Indian subcontinent and Middle East and an emerging model for molecular and genetic studies of mosquito-parasite interactions. The type form of the species is responsible for the majority of urban malaria transmission across its range.
RESULTS: Here, we report the genome sequence and annotation of the Indian strain of the type form of An. stephensi. The 221 Mb genome assembly represents more than 92% of the entire genome and was produced using a combination of 454, Illumina, and PacBio sequencing. Physical mapping assigned 62% of the genome onto chromosomes, enabling chromosome-based analysis. Comparisons between An. stephensi and An. gambiae reveal that the rate of gene order reshuffling on the X chromosome was three times higher than that on the autosomes. An. stephensi has more heterochromatin in pericentric regions but less repetitive DNA in chromosome arms than An. gambiae. We also identify a number of Y-chromosome contigs and BACs. Interspersed repeats constitute 7.1% of the assembled genome while LTR retrotransposons alone comprise more than 49% of the Y contigs. RNA-seq analyses provide new insights into mosquito innate immunity, development, and sexual dimorphism.
CONCLUSIONS: The genome analysis described in this manuscript provides a resource and platform for fundamental and translational research into a major urban malaria vector. Chromosome-based investigations provide unique perspectives on Anopheles chromosome evolution. RNA-seq analysis and studies of immunity genes offer new insights into mosquito biology and mosquito-parasite interactions.
ESTHER : Jiang_2014_Genome.Biol_15_459
PubMedSearch : Jiang_2014_Genome.Biol_15_459
PubMedID: 25244985
Gene_locus related to this paper: anoga-Q7PVF9 , anoga-q7q837 , anost-a0a1a9thh9 , anost-a0a182xxz0 , anost-a0a182xzf1 , anost-a0a182xxy9 , anoga-q7q887

Title : Mapping breakpoints of a familial chromosome insertion (18,7) (q22.1\; q36.2q21.11) to DPP6 and CACNA2D1 genes in an azoospermic male - Li_2014_Gene_547_43
Author(s) : Li L , Chen H , Yin C , Yang C , Wang B , Zheng S , Zhang J , Fan W
Ref : Gene , 547 :43 , 2014
Abstract : It is widely accepted that the incidence of chromosomal aberration is 10-15.2% in the azoospermic male; however, the exact genetic damages are currently unknown for more than 40% of azoospermia. To elucidate the causative gene defects, we used the next generation sequencing (NGS) to map the breakpoints of a chromosome insertion from an azoospermic male who carries a balanced, maternally inherited karyotype 46, XY, inv ins (18,7) (q22.1; q36.2q21.11). The analysis revealed that the breakage in chromosome 7 disrupts two genes, dipeptidyl aminopeptidase-like protein 6 (DPP6) and contactin-associated protein-like 2 (CACNA2D1), the former participates in regulation of voltage-gated potassium channels, and the latter is one of the components in voltage-gated calcium channels. The deletion and duplication were not identified equal or beyond 100 kb, but 4 homologous DNA elements were verified proximal to the breakpoints. One of the proband's sisters inherited the same aberrant karyotype and experienced recurrent miscarriages and consecutive fetus death, while in contrast, another sister with a normal karyotype experienced normal labor and gave birth to healthy babies. The insertional translocation is confirmed with FISH and the Y-chromosome microdeletions were excluded by genetic testing. This is the first report describing chromosome insertion inv ins (18,7) and attributes DPP6 and CACNA2D1 to azoospermia.
ESTHER : Li_2014_Gene_547_43
PubMedSearch : Li_2014_Gene_547_43
PubMedID: 24937803

Title : Novel human butyrylcholinesterase variants: toward organophosphonate detoxication - Dwyer_2014_Biochemistry_53_4476
Author(s) : Dwyer M , Javor S , Ryan DA , Smith EM , Wang B , Zhang J , Cashman JR
Ref : Biochemistry , 53 :4476 , 2014
Abstract : Human butyrylcholinesterase (hBChE) is currently being developed as a detoxication enzyme for stoichiometric binding and/or catalytic hydrolysis of organophosphates. Herein, we describe the use of a molecular evolution method to develop novel hBChE variants with increased resistance to stereochemically defined nerve agent model compounds of soman, sarin, and cyclosarin. Novel hBChE variants (Y332S, D340H, and Y332S/D340H) were identified with an increased resistance to nerve agent model compounds that retained robust intrinsic catalytic efficiency. Molecular dynamics simulations of these variants revealed insights into the mechanism by which these structural changes conferred nerve agent model compound resistance.
ESTHER : Dwyer_2014_Biochemistry_53_4476
PubMedSearch : Dwyer_2014_Biochemistry_53_4476
PubMedID: 24902043

Title : Colorimetric and fluorometric assays for acetylcholinesterase and its inhibitors screening based on a fluorescein derivate - Wang_2014_Bioorg.Med.Chem.Lett_24_552
Author(s) : Wang B , Wang H , Wang F , Zhou G , Wang Y , Kambam S , Chen X
Ref : Bioorganic & Medicinal Chemistry Lett , 24 :552 , 2014
Abstract : A fluorescein-based sensor was developed for the AChE activity assay and the inhibitor screening. The sensor provided the dual assay methods for the screening of AChE activity in the presence or absence of inhibitor. The colorimetric and fluorometric assays were based on the following processes: (1) owing to the hydrolysis of acetylthiocholine in the presence of AChE, the fluorescein-based probe can rapidly induce 1,4-addition of the hydrolysis product thiocholine to alpha,beta-unsaturated ketone in the compound 1, resulting in strong fluorescence and absorption changes; (2) in the presence of the corresponding inhibitor, the fluorescence enhancement or the absorption change would be inhibited in that the formation of thiocholine was hindered.
ESTHER : Wang_2014_Bioorg.Med.Chem.Lett_24_552
PubMedSearch : Wang_2014_Bioorg.Med.Chem.Lett_24_552
PubMedID: 24360998

Title : Molecular Mechanisms of Reduced Nerve Toxicity by Titanium Dioxide Nanoparticles in the Phoxim-Exposed Brain of Bombyx mori - Xie_2014_PLoS.One_9_e101062
Author(s) : Xie Y , Wang B , Li F , Ma L , Ni M , Shen W , Hong F , Li B
Ref : PLoS ONE , 9 :e101062 , 2014
Abstract : Bombyx mori (B. mori), silkworm, is one of the most important economic insects in the world, while phoxim, an organophosphorus (OP) pesticide, impact its economic benefits seriously. Phoxim exposure can damage the brain, fatbody, midgut and haemolymph of B. mori. However the metabolism of proteins and carbohydrates in phoxim-exposed B. mori can be improved by Titanium dioxide nanoparticles (TiO2 NPs). In this study, we explored whether TiO2 NPs treatment can reduce the phoxim-induced brain damage of the 5th larval instar of B. mori. We observed that TiO2 NPs pretreatments significantly reduced the mortality of phoxim-exposed larva and relieved severe brain damage and oxidative stress under phoxim exposure in the brain. The treatments also relieved the phoxim-induced increases in the contents of acetylcholine (Ach), glutamate (Glu) and nitric oxide (NO) and the phoxim-induced decreases in the contents of norepinephrine (NE), Dopamine (DA), and 5-hydroxytryptamine (5-HT), and reduced the inhibition of acetylcholinesterase (AChE), Na+/K+-ATPase, Ca2+-ATPase, and Ca2+/Mg2+-ATPase activities and the activation of total nitric oxide synthase (TNOS) in the brain. Furthermore, digital gene expression profile (DGE) analysis and real time quantitative PCR (qRT-PCR) assay revealed that TiO2 NPs pretreatment inhibited the up-regulated expression of ace1, cytochrome c, caspase-9, caspase-3, Bm109 and down-regulated expression of BmIap caused by phoxim; these genes are involved in nerve conduction, oxidative stress and apoptosis. TiO2 NPs pretreatment also inhibited the down-regulated expression of H+ transporting ATP synthase and vacuolar ATP synthase under phoxim exposure, which are involved in ion transport and energy metabolism. These results indicate that TiO2 NPs pretreatment reduced the phoxim-induced nerve toxicity in the brain of B. mori.
ESTHER : Xie_2014_PLoS.One_9_e101062
PubMedSearch : Xie_2014_PLoS.One_9_e101062
PubMedID: 24971466

Title : The draft genomes of soft-shell turtle and green sea turtle yield insights into the development and evolution of the turtle-specific body plan - Wang_2013_Nat.Genet_45_701
Author(s) : Wang Z , Pascual-Anaya J , Zadissa A , Li W , Niimura Y , Huang Z , Li C , White S , Xiong Z , Fang D , Wang B , Ming Y , Chen Y , Zheng Y , Kuraku S , Pignatelli M , Herrero J , Beal K , Nozawa M , Li Q , Wang J , Zhang H , Yu L , Shigenobu S , Liu J , Flicek P , Searle S , Kuratani S , Yin Y , Aken B , Zhang G , Irie N
Ref : Nat Genet , 45 :701 , 2013
Abstract : The unique anatomical features of turtles have raised unanswered questions about the origin of their unique body plan. We generated and analyzed draft genomes of the soft-shell turtle (Pelodiscus sinensis) and the green sea turtle (Chelonia mydas); our results indicated the close relationship of the turtles to the bird-crocodilian lineage, from which they split approximately 267.9-248.3 million years ago (Upper Permian to Triassic). We also found extensive expansion of olfactory receptor genes in these turtles. Embryonic gene expression analysis identified an hourglass-like divergence of turtle and chicken embryogenesis, with maximal conservation around the vertebrate phylotypic period, rather than at later stages that show the amniote-common pattern. Wnt5a expression was found in the growth zone of the dorsal shell, supporting the possible co-option of limb-associated Wnt signaling in the acquisition of this turtle-specific novelty. Our results suggest that turtle evolution was accompanied by an unexpectedly conservative vertebrate phylotypic period, followed by turtle-specific repatterning of development to yield the novel structure of the shell.
ESTHER : Wang_2013_Nat.Genet_45_701
PubMedSearch : Wang_2013_Nat.Genet_45_701
PubMedID: 23624526
Gene_locus related to this paper: chemy-m7c042 , chemy-m7bp40 , chemy-m7cgq9 , chemy-m7bs15 , chemy-m7c0b2 , chemy-m7bkv2 , chemy-m7bnk5 , chemy-m7bzy6

Title : Draft genome of the wheat A-genome progenitor Triticum urartu - Ling_2013_Nature_496_87
Author(s) : Ling HQ , Zhao S , Liu D , Wang J , Sun H , Zhang C , Fan H , Li D , Dong L , Tao Y , Gao C , Wu H , Li Y , Cui Y , Guo X , Zheng S , Wang B , Yu K , Liang Q , Yang W , Lou X , Chen J , Feng M , Jian J , Zhang X , Luo G , Jiang Y , Liu J , Wang Z , Sha Y , Zhang B , Tang D , Shen Q , Xue P , Zou S , Wang X , Liu X , Wang F , Yang Y , An X , Dong Z , Zhang K , Luo MC , Dvorak J , Tong Y , Yang H , Li Z , Wang D , Zhang A
Ref : Nature , 496 :87 , 2013
Abstract : Bread wheat (Triticum aestivum, AABBDD) is one of the most widely cultivated and consumed food crops in the world. However, the complex polyploid nature of its genome makes genetic and functional analyses extremely challenging. The A genome, as a basic genome of bread wheat and other polyploid wheats, for example, T. turgidum (AABB), T. timopheevii (AAGG) and T. zhukovskyi (AAGGA(m)A(m)), is central to wheat evolution, domestication and genetic improvement. The progenitor species of the A genome is the diploid wild einkorn wheat T. urartu, which resembles cultivated wheat more extensively than do Aegilops speltoides (the ancestor of the B genome) and Ae. tauschii (the donor of the D genome), especially in the morphology and development of spike and seed. Here we present the generation, assembly and analysis of a whole-genome shotgun draft sequence of the T. urartu genome. We identified protein-coding gene models, performed genome structure analyses and assessed its utility for analysing agronomically important genes and for developing molecular markers. Our T. urartu genome assembly provides a diploid reference for analysis of polyploid wheat genomes and is a valuable resource for the genetic improvement of wheat.
ESTHER : Ling_2013_Nature_496_87
PubMedSearch : Ling_2013_Nature_496_87
PubMedID: 23535596
Gene_locus related to this paper: triua-m8a764 , triua-m8ag96 , triua-m7zp69 , wheat-w5d1z6 , wheat-w5d232 , wheat-w5bnf5 , triua-t1nm05 , wheat-w5cae4 , triua-m7ytf7 , wheat-w5f1j8 , triua-m8ad49 , wheat-a0a077s1q2 , wheat-a0a3b6c2m6 , triua-m7zi26 , wheat-a0a3b6at77 , wheat-a0a3b6atp7

Title : 2-(2-indolyl-)-4(3H)-quinazolines derivates as new inhibitors of AChE: design, synthesis, biological evaluation and molecular modelling - Li_2013_J.Enzyme.Inhib.Med.Chem_28_583
Author(s) : Li Z , Wang B , Hou JQ , Huang SL , Ou TM , Tan JH , An LK , Li D , Gu LQ , Huang ZS
Ref : J Enzyme Inhib Med Chem , 28 :583 , 2013
Abstract : We recently reported that synthetic derivatives of rutaecarpine alkaloid exhibited high acetyl cholinesterase (AChE) inhibitory activity and high selectivity for AChE over butyrylcholinesterases (BCHE). To explore novel effective drugs for the treatment of Alzheimer's disease (AD), in this paper, further research results were presented. Starting from a structure-based drug design, a series of novel 2-(2-indolyl-)-4(3H)-quinazolines derivates were designed and synthesized as the ring-opened analogues of rutaecarpine alkaloid and subjected to pharmacological evaluation as AChE inhibitors. Among them, derivates 3a-c and 3g-h exhibited strong inhibitory activity for AChE and high selectivity for AChE over BCHE. The structure-activity relationships were discussed and their binding conformation and simultaneous interactions mode were further clarified by kinetic characterization and the molecular docking studies.
ESTHER : Li_2013_J.Enzyme.Inhib.Med.Chem_28_583
PubMedSearch : Li_2013_J.Enzyme.Inhib.Med.Chem_28_583
PubMedID: 22380775

Title : Whole-genome sequencing of Oryza brachyantha reveals mechanisms underlying Oryza genome evolution - Chen_2013_Nat.Commun_4_1595
Author(s) : Chen J , Huang Q , Gao D , Wang J , Lang Y , Liu T , Li B , Bai Z , Luis Goicoechea J , Liang C , Chen C , Zhang W , Sun S , Liao Y , Zhang X , Yang L , Song C , Wang M , Shi J , Liu G , Liu J , Zhou H , Zhou W , Yu Q , An N , Chen Y , Cai Q , Wang B , Liu B , Min J , Huang Y , Wu H , Li Z , Zhang Y , Yin Y , Song W , Jiang J , Jackson SA , Wing RA , Chen M
Ref : Nat Commun , 4 :1595 , 2013
Abstract : The wild species of the genus Oryza contain a largely untapped reservoir of agronomically important genes for rice improvement. Here we report the 261-Mb de novo assembled genome sequence of Oryza brachyantha. Low activity of long-terminal repeat retrotransposons and massive internal deletions of ancient long-terminal repeat elements lead to the compact genome of Oryza brachyantha. We model 32,038 protein-coding genes in the Oryza brachyantha genome, of which only 70% are located in collinear positions in comparison with the rice genome. Analysing breakpoints of non-collinear genes suggests that double-strand break repair through non-homologous end joining has an important role in gene movement and erosion of collinearity in the Oryza genomes. Transition of euchromatin to heterochromatin in the rice genome is accompanied by segmental and tandem duplications, further expanded by transposable element insertions. The high-quality reference genome sequence of Oryza brachyantha provides an important resource for functional and evolutionary studies in the genus Oryza.
ESTHER : Chen_2013_Nat.Commun_4_1595
PubMedSearch : Chen_2013_Nat.Commun_4_1595
PubMedID: 23481403
Gene_locus related to this paper: orysa-Q6ZDG3 , orysa-q6h415 , orysj-q6yse8 , orysa-q33aq0 , orybr-j3l7k2 , orybr-j3m138 , orybr-j3l6m8 , orybr-j3m3b3 , orybr-j3l8d1 , orybr-j3kza5 , orybr-j3mnb5 , orybr-j3n4p4 , orybr-j3lg73 , orybr-j3l342 , orybr-j3msi2 , orybr-j3nb83 , orybr-j3mpc5

Title : Complete genome sequence of the pyrene-degrading bacterium Cycloclasticus sp. strain P1 - Lai_2012_J.Bacteriol_194_6677
Author(s) : Lai Q , Li W , Wang B , Yu Z , Shao Z
Ref : Journal of Bacteriology , 194 :6677 , 2012
Abstract : Cycloclasticus sp. strain P1 was isolated from deep-sea sediments of the Pacific Ocean and characterized as a unique bacterium in the degradation of pyrene, a four-ring polycyclic aromatic hydrocarbon (PAH). Here we report the complete genome of P1 and genes associated with PAH degradation.
ESTHER : Lai_2012_J.Bacteriol_194_6677
PubMedSearch : Lai_2012_J.Bacteriol_194_6677
PubMedID: 23144416
Gene_locus related to this paper: cycsp-k0c2b8

Title : The oyster genome reveals stress adaptation and complexity of shell formation - Zhang_2012_Nature_490_49
Author(s) : Zhang G , Fang X , Guo X , Li L , Luo R , Xu F , Yang P , Zhang L , Wang X , Qi H , Xiong Z , Que H , Xie Y , Holland PW , Paps J , Zhu Y , Wu F , Chen Y , Wang J , Peng C , Meng J , Yang L , Liu J , Wen B , Zhang N , Huang Z , Zhu Q , Feng Y , Mount A , Hedgecock D , Xu Z , Liu Y , Domazet-Loso T , Du Y , Sun X , Zhang S , Liu B , Cheng P , Jiang X , Li J , Fan D , Wang W , Fu W , Wang T , Wang B , Zhang J , Peng Z , Li Y , Li N , Chen M , He Y , Tan F , Song X , Zheng Q , Huang R , Yang H , Du X , Chen L , Yang M , Gaffney PM , Wang S , Luo L , She Z , Ming Y , Huang W , Huang B , Zhang Y , Qu T , Ni P , Miao G , Wang Q , Steinberg CE , Wang H , Qian L , Liu X , Yin Y
Ref : Nature , 490 :49 , 2012
Abstract : The Pacific oyster Crassostrea gigas belongs to one of the most species-rich but genomically poorly explored phyla, the Mollusca. Here we report the sequencing and assembly of the oyster genome using short reads and a fosmid-pooling strategy, along with transcriptomes of development and stress response and the proteome of the shell. The oyster genome is highly polymorphic and rich in repetitive sequences, with some transposable elements still actively shaping variation. Transcriptome studies reveal an extensive set of genes responding to environmental stress. The expansion of genes coding for heat shock protein 70 and inhibitors of apoptosis is probably central to the oyster's adaptation to sessile life in the highly stressful intertidal zone. Our analyses also show that shell formation in molluscs is more complex than currently understood and involves extensive participation of cells and their exosomes. The oyster genome sequence fills a void in our understanding of the Lophotrochozoa.
ESTHER : Zhang_2012_Nature_490_49
PubMedSearch : Zhang_2012_Nature_490_49
PubMedID: 22992520
Gene_locus related to this paper: cragi-k1qzk7 , cragi-k1rad0 , cragi-k1p6v9 , cragi-k1pa46 , cragi-k1pga2 , cragi-k1pp63 , cragi-k1pwa8 , cragi-k1q0b1.1 , cragi-k1q0b1.2 , cragi-k1q1h2 , cragi-k1q2z6 , cragi-k1qaj8 , cragi-k1qaw5 , cragi-k1qhl5 , cragi-k1qly1 , cragi-k1qqb1.1 , cragi-k1qqb1.2 , cragi-k1qs61 , cragi-k1qs99 , cragi-k1qwl6 , cragi-k1r068 , cragi-k1r0n3.1 , cragi-k1r0n3.2 , cragi-k1r0r4 , cragi-k1r1i9 , cragi-k1r8q9 , cragi-k1rgi1 , cragi-k1rig4 , cragi-k1s0a7.1 , cragi-k1s0a7.2 , cragi-k1s0a7.3 , cragi-k1q6q0 , cragi-k1rru1 , cragi-k1qfi4 , cragi-k1qvm5 , cragi-k1qq58 , cragi-k1qdc0 , cragi-k1r754 , cragi-k1pje5 , cragi-k1qca6 , cragi-k1qdt5 , cragi-k1qkz7 , cragi-k1rgd2 , cragi-k1puh6 , cragi-k1raz4 , cragi-k1qqj4 , cragi-k1rbs1

Title : Enhanced activity of Rhizomucor miehei lipase by directed evolution with simultaneous evolution of the propeptide - Wang_2012_Appl.Microbiol.Biotechnol_96_443
Author(s) : Wang J , Wang D , Wang B , Mei ZH , Liu J , Yu HW
Ref : Applied Microbiology & Biotechnology , 96 :443 , 2012
Abstract : Propeptides are short sequences that facilitate the folding of their associated proteins. The present study found that the propeptide of Rhizomucor miehei lipase (RML) was not proteolytically removed in Escherichia coli. Moreover, RML was not expressed if the propeptide was removed artificially during the cloning process in E. coli. This behavior in E. coli permitted the application of directed evolution to full-length RML, which included both propeptide and catalytic domain, to explore the role played by the propeptide in governing enzyme activity. The catalytic rate constant, k (cat), of the most active mutant RML protein (Q5) was increased from 10.63 +/- 0.80 to 71.44 +/- 3.20 min(-1) after four rounds of screening. Sequence analysis of the mutant displayed three mutations in the propeptide (L57V, S65A, and V67A) and two mutations in the functional region (I111T and S168P). This result showed that improved activity was obtained with essential involvement by mutations in the propeptide, meaning that the majority of mutants with enhanced activity had simultaneous mutations in propeptide and catalytic domains. This observation leads to the hypothesis that directed evolution has simultaneous and synergistic effects on both functional and propeptide domains that arise from the role played by the propeptide in the folding and maturation of the enzyme. We suggest that directed evolution of full-length proteins including their propeptides is a strategy with general validity for extending the range of conformations available to proteins, leading to the enhancement of the catalytic rates of the enzymes.
ESTHER : Wang_2012_Appl.Microbiol.Biotechnol_96_443
PubMedSearch : Wang_2012_Appl.Microbiol.Biotechnol_96_443
PubMedID: 22584429
Gene_locus related to this paper: rhimi-lipas

Title : Complete genome sequence of Bacillus amyloliquefaciens XH7, which exhibits production of purine nucleosides - Yang_2011_J.Bacteriol_193_5593
Author(s) : Yang H , Liao Y , Wang B , Lin Y , Pan L
Ref : Journal of Bacteriology , 193 :5593 , 2011
Abstract : Here, we report the complete annotated genome sequence of Bacillus amyloliquefaciens XH7, which is used to produce purine nucleosides in industry. The genome sequence will allow for the characterization of the molecular mechanisms underlying its beneficial properties.
ESTHER : Yang_2011_J.Bacteriol_193_5593
PubMedSearch : Yang_2011_J.Bacteriol_193_5593
PubMedID: 21914895
Gene_locus related to this paper: baca2-a7z811 , bacas-e1ur92

Title : Cloning and characterization of the biosynthetic gene cluster of the bacterial RNA polymerase inhibitor tirandamycin from marine-derived Streptomyces sp. SCSIO1666 - Mo_2011_Biochem.Biophys.Res.Commun_406_341
Author(s) : Mo X , Wang Z , Wang B , Ma J , Huang H , Tian X , Zhang S , Zhang C , Ju J
Ref : Biochemical & Biophysical Research Communications , 406 :341 , 2011
Abstract : Tirandamycins are bacterial RNA polymerase inhibitors holding great potential for antibacterial agent design. To elucidate the biosynthetic machinery and generate new derivatives, the tirandamycin biosynthetic gene cluster was cloned and sequenced from marine-derived Streptomyces sp. SCSIO1666. The biosynthetic gene cluster of tirandamycin spans a DNA region of ~56kb and consists of 15 open reading frames (ORFs) which encode three type I polyketide synthases (TrdAI, AII, AIII), one non-ribosomal peptide synthetase (TrdD), one phosphopantetheinyl transferase (TrdM), one Type II thioesterase (TrdB), one FAD-dependent oxidoreductase (TrdL), one cytochrome P450 monooxygenase (TrdI), three proteins related to resistance and regulations (TrdHJK), and four proteins with unknown function (TrdCEFG). To investigate the roles of the genes played in the biosynthetic machinery, seven genes (trdAI and trdBDFHIK) were inactivated via in frame replacement with an apramycin gene cassette using -RED recombination technology. The trdAI and trdD mutants targeting the ketosynthase and adenylation domain of TrdAI and TrdD, respectively, abolished the production of tirandamycins, confirming their involvement in the tirandamycin biosynthesis. TrdH showed high homology to LuxR family transcriptional regulatory proteins, disruption of which abolished the production of tirandamycins, indicating that TrdH is a positive regulator for tirandamycin biosynthesis. On the other hand, TrdK showed high homology to TetR-family transcriptional regulatory proteins, disruption of which significantly increased the yields of tirandamycins almost one-fold, implicating that TrdK is a negative regulator for tirandamycin biosynthesis. Disruption of the gene trdI resulted in the accumulation of the intermediate tirandamycin C (3) and a trace amount of new product tirandamycin C2 (5). A model of tirandamycin biosynthesis was proposed based on bioinformatics analyses, gene inactivation experiments and intermediates isolated from the mutants. These findings set the stage for further study of the tirandamycin biosynthetic mechanism and rationally engineer new tirandamycin analogues.
ESTHER : Mo_2011_Biochem.Biophys.Res.Commun_406_341
PubMedSearch : Mo_2011_Biochem.Biophys.Res.Commun_406_341
PubMedID: 21329667
Gene_locus related to this paper: 9actn-f1di35

Title : Lipoprotein lipase gene polymorphisms and risks of childhood obesity in Chinese preschool children - Wang_2011_Eur.J.Pediatr_170_1309
Author(s) : Wang LN , Yu Q , Xiong Y , Liu LF , Zhang Z , Zhang XN , Cheng H , Wang B
Ref : Eur J Pediatr , 170 :1309 , 2011
Abstract : Childhood obesity is increasingly prevalent in the community and is related to many adult diseases. Lipoprotein lipase (LPL) plays a central role in dyslipidemia, and polymorphisms of the LPL gene may result in the disturbance in the lipid's metabolism. The aim of this study is to test the hypothesis that genetic variants of LPL and serum lipid levels are associated with the risk of childhood obesity. We genotyped +495T > G and PvuII T > C in an LPL gene and measured the serum lipid levels in a case-control study of 124 obese children and 346 frequency-matched normal controls in preschool Chinese children. The variant genotypes of LPL + 495GG and PvuII CC were associated with a significantly increased risk of childhood obesity [adjusted odds ratio (OR) = 2.39, 95% CI = 1.09-5.23 for +495 GG; adjusted OR = 2.00, 95% CI = 1.04-3.83 for PvuII CC], compared with their wild-type genotypes, respectively. In addition, compared with the lower serum level cut off by the control median, the higher level of serum triglyceride (TG) (>0.59 mmol/L) was associated with a 1.32-fold increased risk of childhood obesity, and the higher level of high density lipoprotein cholesterol (HDLC) (>1.14 mmol/L) was associated with a 36% decrease in risk of childhood obesity. Furthermore, the median levels of TG were higher in obese children carrying LPL +495TT/TG and PvuII TT/CT genotypes than those in controls, the HDLC levels were lower in obese children carrying LPL +495TG and PvuII CT/CC genotypes than those in controls. In conclusion, the LPL gene +495T > G and PvuII T > C polymorphisms may modulate the magnitude of dyslipidemia in Chinese early-onset obesity.
ESTHER : Wang_2011_Eur.J.Pediatr_170_1309
PubMedSearch : Wang_2011_Eur.J.Pediatr_170_1309
PubMedID: 21431783

Title : Isoflurane-induced spatial memory impairment in mice is prevented by the acetylcholinesterase inhibitor donepezil - Su_2011_PLoS.One_6_e27632
Author(s) : Su D , Zhao Y , Wang B , Xu H , Li W , Chen J , Wang X
Ref : PLoS ONE , 6 :e27632 , 2011
Abstract : Although many studies have shown that isoflurane exposure impairs spatial memory in aged animals, there are no clinical treatments available to prevent this memory deficit. The anticholinergic properties of volatile anesthetics are a biologically plausible cause of cognitive dysfunction in elderly subjects. We hypothesized that pretreatment with the acetylcholinesterase inhibitor donepezil, which has been approved by the Food and Drug Administration (FDA) for the treatment of Alzheimer's disease, prevents isoflurane-induced spatial memory impairment in aged mice. In present study, eighteen-month-old mice were administered donepezil (5 mg/kg) or an equal volume of saline by oral gavage with a feeding needle for four weeks. Then the mice were exposed to isoflurane (1.2%) for six hours. Two weeks later, mice were subjected to the Morris water maze to examine the impairment of spatial memory after exposure to isoflurane. After the behavioral test, the mice were sacrificed, and the protein expression level of acetylcholinesterase (AChE), choline acetylase (ChAT) and alpha7 nicotinic receptor (alpha7-nAChR) were measured in the brain. Each group consisted of 12 mice. We found that isoflurane exposure for six hours impaired the spatial memory of the mice. Compared with the control group, isoflurane exposure dramatically decreased the protein level of ChAT, but not AChE or alpha7-nAChR. Donepezil prevented isoflurane-induced spatial memory impairments and increased ChAT levels, which were downregulated by isoflurane. In conclusions, pretreatment with the AChE inhibitor donepezil prevented isoflurane-induced spatial memory impairment in aged mice. The mechanism was associated with the upregulation of ChAT, which was decreased by isoflurane.
ESTHER : Su_2011_PLoS.One_6_e27632
PubMedSearch : Su_2011_PLoS.One_6_e27632
PubMedID: 22114680

Title : Genome sequencing reveals insights into physiology and longevity of the naked mole rat - Kim_2011_Nature_479_223
Author(s) : Kim EB , Fang X , Fushan AA , Huang Z , Lobanov AV , Han L , Marino SM , Sun X , Turanov AA , Yang P , Yim SH , Zhao X , Kasaikina MV , Stoletzki N , Peng C , Polak P , Xiong Z , Kiezun A , Zhu Y , Chen Y , Kryukov GV , Zhang Q , Peshkin L , Yang L , Bronson RT , Buffenstein R , Wang B , Han C , Li Q , Chen L , Zhao W , Sunyaev SR , Park TJ , Zhang G , Wang J , Gladyshev VN
Ref : Nature , 479 :223 , 2011
Abstract : The naked mole rat (Heterocephalus glaber) is a strictly subterranean, extraordinarily long-lived eusocial mammal. Although it is the size of a mouse, its maximum lifespan exceeds 30 years, making this animal the longest-living rodent. Naked mole rats show negligible senescence, no age-related increase in mortality, and high fecundity until death. In addition to delayed ageing, they are resistant to both spontaneous cancer and experimentally induced tumorigenesis. Naked mole rats pose a challenge to the theories that link ageing, cancer and redox homeostasis. Although characterized by significant oxidative stress, the naked mole rat proteome does not show age-related susceptibility to oxidative damage or increased ubiquitination. Naked mole rats naturally reside in large colonies with a single breeding female, the 'queen', who suppresses the sexual maturity of her subordinates. They also live in full darkness, at low oxygen and high carbon dioxide concentrations, and are unable to sustain thermogenesis nor feel certain types of pain. Here we report the sequencing and analysis of the naked mole rat genome, which reveals unique genome features and molecular adaptations consistent with cancer resistance, poikilothermy, hairlessness and insensitivity to low oxygen, and altered visual function, circadian rythms and taste sensing. This information provides insights into the naked mole rat's exceptional longevity and ability to live in hostile conditions, in the dark and at low oxygen. The extreme traits of the naked mole rat, together with the reported genome and transcriptome information, offer opportunities for understanding ageing and advancing other areas of biological and biomedical research.
ESTHER : Kim_2011_Nature_479_223
PubMedSearch : Kim_2011_Nature_479_223
PubMedID: 21993625
Gene_locus related to this paper: hetga-g5amh8 , hetga-g5an68 , hetga-g5anw7 , hetga-g5as32 , hetga-g5atg6 , hetga-g5b5b7 , hetga-g5b9m6 , hetga-g5bdh8 , hetga-g5bmv3 , hetga-g5bp66 , hetga-g5bp67 , hetga-g5bp68 , hetga-g5bpp3 , hetga-g5bsd4 , hetga-g5bul0 , hetga-g5bw29 , hetga-g5bze3 , hetga-g5c6q5 , hetga-g5bfw4 , hetga-g5b832 , hetga-g5c6q8 , hetga-g5bj87 , hetga-a0a0p6jix7 , hetga-g5c108 , hetga-g5c109 , hetga-g5c110 , hetga-g5arh0 , hetga-g5aua1 , hetga-g5are8 , hetga-g5ax31 , hetga-a0a0p6jud6 , hetga-g5b7v3 , hetga-a0a0p6jw61 , hetga-a0a0p6jdl4 , hetga-g5bg83 , hetga-g5bcu5 , hetga-g5bvp0 , hetga-g5b8m7 , hetga-g5b709 , hetga-g5bt99 , hetga-g5b4q4

Title : Genome sequence of Escherichia coli XH140A, which produces L-threonine - Yang_2011_J.Bacteriol_193_6090
Author(s) : Yang H , Liao Y , Wang B , Lin Y , Pan L
Ref : Journal of Bacteriology , 193 :6090 , 2011
Abstract : Here we report the draft annotated genome sequence of Escherichia coli XH140A, which is used to produce l-threonine in industry. The genome sequence will allow the characterization of the molecular mechanisms underlying its beneficial properties.
ESTHER : Yang_2011_J.Bacteriol_193_6090
PubMedSearch : Yang_2011_J.Bacteriol_193_6090
PubMedID: 21994923
Gene_locus related to this paper: ecoli-ybff , ecoli-ycfp , ecoli-yqia , ecoli-YfhR

Title : The genome of the mesopolyploid crop species Brassica rapa - Wang_2011_Nat.Genet_43_1035
Author(s) : Wang X , Wang H , Wang J , Sun R , Wu J , Liu S , Bai Y , Mun JH , Bancroft I , Cheng F , Huang S , Li X , Hua W , Freeling M , Pires JC , Paterson AH , Chalhoub B , Wang B , Hayward A , Sharpe AG , Park BS , Weisshaar B , Liu B , Li B , Tong C , Song C , Duran C , Peng C , Geng C , Koh C , Lin C , Edwards D , Mu D , Shen D , Soumpourou E , Li F , Fraser F , Conant G , Lassalle G , King GJ , Bonnema G , Tang H , Belcram H , Zhou H , Hirakawa H , Abe H , Guo H , Jin H , Parkin IA , Batley J , Kim JS , Just J , Li J , Xu J , Deng J , Kim JA , Yu J , Meng J , Min J , Poulain J , Hatakeyama K , Wu K , Wang L , Fang L , Trick M , Links MG , Zhao M , Jin M , Ramchiary N , Drou N , Berkman PJ , Cai Q , Huang Q , Li R , Tabata S , Cheng S , Zhang S , Sato S , Sun S , Kwon SJ , Choi SR , Lee TH , Fan W , Zhao X , Tan X , Xu X , Wang Y , Qiu Y , Yin Y , Li Y , Du Y , Liao Y , Lim Y , Narusaka Y , Wang Z , Li Z , Xiong Z , Zhang Z
Ref : Nat Genet , 43 :1035 , 2011
Abstract : We report the annotation and analysis of the draft genome sequence of Brassica rapa accession Chiifu-401-42, a Chinese cabbage. We modeled 41,174 protein coding genes in the B. rapa genome, which has undergone genome triplication. We used Arabidopsis thaliana as an outgroup for investigating the consequences of genome triplication, such as structural and functional evolution. The extent of gene loss (fractionation) among triplicated genome segments varies, with one of the three copies consistently retaining a disproportionately large fraction of the genes expected to have been present in its ancestor. Variation in the number of members of gene families present in the genome may contribute to the remarkable morphological plasticity of Brassica species. The B. rapa genome sequence provides an important resource for studying the evolution of polyploid genomes and underpins the genetic improvement of Brassica oil and vegetable crops.
ESTHER : Wang_2011_Nat.Genet_43_1035
PubMedSearch : Wang_2011_Nat.Genet_43_1035
PubMedID: 21873998
Gene_locus related to this paper: braol-Q8GTM3 , braol-Q8GTM4 , brarp-m4ei94 , brarp-m4c988 , brana-a0a078j4a9 , brana-a0a078e1m0 , brana-a0a078cd75 , brarp-m4dwa6 , brana-a0a078j4f0 , brana-a0a078cus4 , brana-a0a078f8c2 , brana-a0a078jql1 , brana-a0a078dgj3 , brana-a0a078hw50 , brana-a0a078cuu0 , brana-a0a078dfa9 , brana-a0a078ic91 , brarp-m4ctw3 , brana-a0a078ca65 , brana-a0a078ctc8 , brana-a0a078h021 , brana-a0a078jx23 , brarp-m4da84 , brarp-m4dwr7 , brana-a0a078dh94 , brana-a0a078h612 , brana-a0a078j2t3 , braol-a0a0d3dpb2 , braol-a0a0d3dx76 , brana-a0a078jxa8 , brana-a0a078i2k3 , brarp-m4cwq4 , brarp-m4dcj8 , brarp-m4eh17 , brarp-m4eey4 , brarp-m4dnj8 , brarp-m4ey83 , brarp-m4ey84

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 : Direct detection of the hydrolysis of nerve agent model compounds using a fluorescent probe - Zheng_2010_Chem.Biol.Interact_187_330
Author(s) : Zheng X , Okolotowicz K , Wang B , MacDonald M , Cashman JR , Zhang J
Ref : Chemico-Biological Interactions , 187 :330 , 2010
Abstract : Nerve agents are highly toxic organophosphorus compounds (OPs) that are used as chemical warfare agents. Developing a catalytic bioscavenger to efficiently detoxify nerve agents in the bloodstream of affected individuals has been recognized as an attractive approach to prevent nerve agent toxicity. However, the search for nerve agent catalysts has been hindered by the lack of efficient direct assays for nerve agent hydrolysis. In addition, authentic nerve agents are restricted and access to use for experiments by the general research community is prohibited. Herein we report development of a method that combines use of novel nerve agent model compounds possessing a thiocholine leaving group that reacts with the fluorescent thio-detection probe, BES-Thio, to afford detection of sub-micromolar amounts of nerve agent model compounds hydrolysis products. The detection sensitivity of BES-Thio assay was approximately 10 times better than the Ellman assay. This developed method is useful as a direct, sensitive screening method for evaluating OP hydrolysis efficiency from catalytic cholinesterases. When the assay was assembled in the presence of oxime, OP-inhibited cholinesterases that were able to be reactivated by specific oxime showed oxime-assisted enzyme-mediated OP hydrolysis. Therefore, this method is also useful to screen oxime analogs to identify novel agents that can reactivate OP-inhibited cholinesterases or to screen various enzymes to identify pseudo-catalytic bioscavengers that can be readily reactivated by clinically approved oximes.
ESTHER : Zheng_2010_Chem.Biol.Interact_187_330
PubMedSearch : Zheng_2010_Chem.Biol.Interact_187_330
PubMedID: 20097185

Title : Synthesis and evaluation of novel rutaecarpine derivatives and related alkaloids derivatives as selective acetylcholinesterase inhibitors - Wang_2010_Eur.J.Med.Chem_45_1415
Author(s) : Wang B , Mai YC , Li Y , Hou JQ , Huang SL , Ou TM , Tan JH , An LK , Li D , Gu LQ , Huang ZS
Ref : Eur Journal of Medicinal Chemistry , 45 :1415 , 2010
Abstract : A series of novel rutaecarpine derivatives and related alkaloid derivatives 3-aminoalkanamido-substituted rutaecarpine 4a-f and 7,8-dehydrorutaecarpine 5a-c, and 6-aminoalkanamido-substituted 3-[2-(3-Indolyl)ethyl]-4(3a)-quinazolinones 8a-c, were synthesized and subjected to pharmacological evaluation as acetylcholinesterase (AChE) inhibitors. The synthetic compounds exhibited strong inhibitory activity for AChE and high selectivity for AChE over BuChE. The structure-activity relationships were discussed and their binding conformation and simultaneous interactions mode were further clarified by kinetic characterization and the molecular docking studies.
ESTHER : Wang_2010_Eur.J.Med.Chem_45_1415
PubMedSearch : Wang_2010_Eur.J.Med.Chem_45_1415
PubMedID: 20079560

Title : The sequence and de novo assembly of the giant panda genome - Li_2010_Nature_463_311
Author(s) : Li R , Fan W , Tian G , Zhu H , He L , Cai J , Huang Q , Cai Q , Li B , Bai Y , Zhang Z , Zhang Y , Wang W , Li J , Wei F , Li H , Jian M , Nielsen R , Li D , Gu W , Yang Z , Xuan Z , Ryder OA , Leung FC , Zhou Y , Cao J , Sun X , Fu Y , Fang X , Guo X , Wang B , Hou R , Shen F , Mu B , Ni P , Lin R , Qian W , Wang G , Yu C , Nie W , Wang J , Wu Z , Liang H , Min J , Wu Q , Cheng S , Ruan J , Wang M , Shi Z , Wen M , Liu B , Ren X , Zheng H , Dong D , Cook K , Shan G , Zhang H , Kosiol C , Xie X , Lu Z , Li Y , Steiner CC , Lam TT , Lin S , Zhang Q , Li G , Tian J , Gong T , Liu H , Zhang D , Fang L , Ye C , Zhang J , Hu W , Xu A , Ren Y , Zhang G , Bruford MW , Li Q , Ma L , Guo Y , An N , Hu Y , Zheng Y , Shi Y , Li Z , Liu Q , Chen Y , Zhao J , Qu N , Zhao S , Tian F , Wang X , Wang H , Xu L , Liu X , Vinar T , Wang Y , Lam TW , Yiu SM , Liu S , Huang Y , Yang G , Jiang Z , Qin N , Li L , Bolund L , Kristiansen K , Wong GK , Olson M , Zhang X , Li S , Yang H
Ref : Nature , 463 :311 , 2010
Abstract : Using next-generation sequencing technology alone, we have successfully generated and assembled a draft sequence of the giant panda genome. The assembled contigs (2.25 gigabases (Gb)) cover approximately 94% of the whole genome, and the remaining gaps (0.05 Gb) seem to contain carnivore-specific repeats and tandem repeats. Comparisons with the dog and human showed that the panda genome has a lower divergence rate. The assessment of panda genes potentially underlying some of its unique traits indicated that its bamboo diet might be more dependent on its gut microbiome than its own genetic composition. We also identified more than 2.7 million heterozygous single nucleotide polymorphisms in the diploid genome. Our data and analyses provide a foundation for promoting mammalian genetic research, and demonstrate the feasibility for using next-generation sequencing technologies for accurate, cost-effective and rapid de novo assembly of large eukaryotic genomes.
ESTHER : Li_2010_Nature_463_311
PubMedSearch : Li_2010_Nature_463_311
PubMedID: 20010809
Gene_locus related to this paper: ailme-ABH15 , ailme-ACHE , ailme-BCHE , ailme-d2gtv3 , ailme-d2gty9 , ailme-d2gu87 , ailme-d2gu97 , ailme-d2gve7 , ailme-d2gwu1 , ailme-d2gx08 , ailme-d2gyt0 , ailme-d2gz36 , ailme-d2gz37 , ailme-d2gz38 , ailme-d2gz39 , ailme-d2gz40 , ailme-d2h5r9 , ailme-d2h7b7 , ailme-d2h9c9 , ailme-d2h794 , ailme-d2hau7 , ailme-d2hau8 , ailme-d2hcd9 , ailme-d2hdi6 , ailme-d2heu6 , ailme-d2hga4 , ailme-d2hqw5 , ailme-d2hs98 , ailme-d2hsx4 , ailme-d2hti6 , ailme-d2htv3 , ailme-d2htz6 , ailme-d2huc7 , ailme-d2hwj8 , ailme-d2hwy7 , ailme-d2hxm1 , ailme-d2hyc8 , ailme-d2hyv2 , ailme-d2hz11 , ailme-d2hza3 , ailme-d2hzr4 , ailme-d2i1l4 , ailme-d2i2g8 , ailme-g1l7m3 , ailme-g1lu36 , ailme-g1m769 , ailme-g1mc29 , ailme-g1mdj8 , ailme-g1mdr5 , ailme-g1mfp4 , ailme-g1mfx5 , ailme-g1lj41 , ailme-g1lm28 , ailme-g1l3u1 , ailme-g1l7l1 , ailme-g1m5i3 , ailme-g1l2f6 , ailme-g1lji5 , ailme-g1lqk3 , ailme-g1l8s9 , ailme-d2h717 , ailme-d2h718 , ailme-d2h719 , ailme-d2h720 , ailme-g1m5v0 , ailme-g1m5y7 , ailme-g1lkt7 , ailme-g1l2a1 , ailme-g1lsc8 , ailme-g1lrp4 , ailme-d2gv02 , ailme-g1mik5 , ailme-g1ljr1 , ailme-g1lxw7 , ailme-d2h8b5 , ailme-d2h2r2 , ailme-d2h9w7 , ailme-g1meh3 , ailme-g1m719

Title : Genome sequence of Azotobacter vinelandii, an obligate aerobe specialized to support diverse anaerobic metabolic processes - Setubal_2009_J.Bacteriol_191_4534
Author(s) : Setubal JC , dos Santos P , Goldman BS , Ertesvag H , Espin G , Rubio LM , Valla S , Almeida NF , Balasubramanian D , Cromes L , Curatti L , Du Z , Godsy E , Goodner B , Hellner-Burris K , Hernandez JA , Houmiel K , Imperial J , Kennedy C , Larson TJ , Latreille P , Ligon LS , Lu J , Maerk M , Miller NM , Norton S , O'Carroll IP , Paulsen I , Raulfs EC , Roemer R , Rosser J , Segura D , Slater S , Stricklin SL , Studholme DJ , Sun J , Viana CJ , Wallin E , Wang B , Wheeler C , Zhu H , Dean DR , Dixon R , Wood D
Ref : Journal of Bacteriology , 191 :4534 , 2009
Abstract : Azotobacter vinelandii is a soil bacterium related to the Pseudomonas genus that fixes nitrogen under aerobic conditions while simultaneously protecting nitrogenase from oxygen damage. In response to carbon availability, this organism undergoes a simple differentiation process to form cysts that are resistant to drought and other physical and chemical agents. Here we report the complete genome sequence of A. vinelandii DJ, which has a single circular genome of 5,365,318 bp. In order to reconcile an obligate aerobic lifestyle with exquisitely oxygen-sensitive processes, A. vinelandii is specialized in terms of its complement of respiratory proteins. It is able to produce alginate, a polymer that further protects the organism from excess exogenous oxygen, and it has multiple duplications of alginate modification genes, which may alter alginate composition in response to oxygen availability. The genome analysis identified the chromosomal locations of the genes coding for the three known oxygen-sensitive nitrogenases, as well as genes coding for other oxygen-sensitive enzymes, such as carbon monoxide dehydrogenase and formate dehydrogenase. These findings offer new prospects for the wider application of A. vinelandii as a host for the production and characterization of oxygen-sensitive proteins.
ESTHER : Setubal_2009_J.Bacteriol_191_4534
PubMedSearch : Setubal_2009_J.Bacteriol_191_4534
PubMedID: 19429624
Gene_locus related to this paper: azovd-c1dex6 , azovd-c1df21 , azovd-c1dfb5 , azovd-c1dg75 , azovd-c1dgm6 , azovd-c1dh91 , azovd-c1di03 , azovd-c1dib3 , azovd-c1dif2 , azovd-c1dIq5 , azovd-c1dir1 , azovd-c1dis2 , azovd-c1djq5 , azovd-c1djw3 , azovd-c1dk37 , azovd-c1dkb2 , azovd-c1dkj0 , azovd-c1dli6 , azovd-c1dng8 , azovd-c1dni5 , azovd-c1dpr0 , azovd-c1dqu3 , azovd-c1dri5 , azovd-c1drx0 , azovd-c1dsl7 , azovd-c1dsq7 , azovd-c1dss1 , azovd-metx , azovi-PHBC , azovd-c1dem4

Title : Polyketide decarboxylative chain termination preceded by o-sulfonation in curacin a biosynthesis - Gu_2009_J.Am.Chem.Soc_131_16033
Author(s) : Gu L , Wang B , Kulkarni A , Gehret JJ , Lloyd KR , Gerwick L , Gerwick WH , Wipf P , Hakansson K , Smith JL , Sherman DH
Ref : Journal of the American Chemical Society , 131 :16033 , 2009
Abstract : Biosynthetic innovation in natural product systems is driven by the recruitment of new genes and enzymes into these complex pathways. Here, an unprecedented decarboxylative chain termination mechanism is described for the polyketide synthase of curacin A, an anticancer lead compound isolated from the marine cyanobacterium Lyngbya majuscula. The unusual chain termination module containing adjacent sulfotransferase (ST) and thioesterase (TE) catalytic domains embedded in CurM was biochemically characterized. The TE was proved to catalyze a hydrolytic chain release of the polyketide chain elongation intermediate. Moreover, a selective ST-mediated sulfonation of the (R)-beta-hydroxyl group was found to precede TE-mediated hydrolysis, triggering a successive decarboxylative elimination and resulting in the formation of a rare terminal olefin in the final metabolite.
ESTHER : Gu_2009_J.Am.Chem.Soc_131_16033
PubMedSearch : Gu_2009_J.Am.Chem.Soc_131_16033
PubMedID: 19835378
Gene_locus related to this paper: 9cyan-d0e8e2

Title : Protective effect of an endothelial lipase gene variant on coronary artery disease in a Chinese population - Tang_2008_J.Lipid.Res_49_369
Author(s) : Tang NP , Wang LS , Yang L , Zhou B , Gu HJ , Sun QM , Cong RH , Zhu HJ , Wang B
Ref : J Lipid Res , 49 :369 , 2008
Abstract : The aim of the present study was to assess the influence of the endothelial lipase (EL) gene 584C/T variant, which results in a change at codon 111 of the EL gene from threonine to isoleucine, on the risk of coronary artery disease (CAD) in a Chinese population. The study population consisted of 265 CAD patients and 265 age- and sex-matched control subjects. The T allele frequency was significantly lower among CAD patients than among control subjects (18.3% vs. 29.8%; P < 0.001). In both the CAD and control groups, the T allele carriers had higher high density lipoprotein cholesterol (HDL-C) levels than homozygote C allele carriers. In a multiple logistic regression model adjusted for age, sex, body mass index, smoking, hypertension, diabetes, hyperlipidemia, and low density lipoprotein cholesterol, a significantly decreased risk of developing CAD was found in subjects carrying a variant CT or TT genotype (odds ratio = 0.496, 95% confidence interval = 0.341-0.723; P < 0.001), and the significance persisted after further adjustment for HDL-C. In conclusion, our observation that the EL 584T allele was associated with protection from CAD in this Chinese population replicates the findings in a Japanese study, which found a similar association of this allele with acute myocardial infarction, independent of HDL-C levels.
ESTHER : Tang_2008_J.Lipid.Res_49_369
PubMedSearch : Tang_2008_J.Lipid.Res_49_369
PubMedID: 17986713
Gene_locus related to this paper: human-LIPG

Title : Substantially improved pharmacokinetics of recombinant human butyrylcholinesterase by fusion to human serum albumin - Huang_2008_BMC.Biotechnol_8_50
Author(s) : Huang YJ , Lundy PM , Lazaris A , Huang Y , Baldassarre H , Wang B , Turcotte C , Cote M , Bellemare A , Bilodeau AS , Brouillard S , Touati M , Herskovits P , Begin I , Neveu N , Brochu E , Pierson J , Hockley DK , Cerasoli DM , Lenz DE , Wilgus H , Karatzas CN , Langermann S
Ref : BMC Biotechnol , 8 :50 , 2008
Abstract : BACKGROUND: Human butyrylcholinesterase (huBChE) has been shown to be an effective antidote against multiple LD50 of organophosphorus compounds. A prerequisite for such use of huBChE is a prolonged circulatory half-life. This study was undertaken to produce recombinant huBChE fused to human serum albumin (hSA) and characterize the fusion protein.
RESULTS: Secretion level of the fusion protein produced in vitro in BHK cells was approximately 30 mg/liter. Transgenic mice and goats generated with the fusion constructs expressed in their milk a bioactive protein at concentrations of 0.04-1.1 g/liter. BChE activity gel staining and a size exclusion chromatography (SEC)-HPLC revealed that the fusion protein consisted of predominant dimers and some monomers. The protein was confirmed to have expected molecular mass of approximately 150 kDa by Western blot. The purified fusion protein produced in vitro was injected intravenously into juvenile pigs for pharmacokinetic study. Analysis of a series of blood samples using the Ellman assay revealed a substantial enhancement of the plasma half-life of the fusion protein (approximately 32 h) when compared with a transgenically produced huBChE preparation containing >70% tetramer (approximately 3 h). In vitro nerve agent binding and inhibition experiments indicated that the fusion protein in the milk of transgenic mice had similar inhibition characteristics compared to human plasma BChE against the nerve agents tested. CONCLUSION: Both the pharmacokinetic study and the in vitro nerve agent binding and inhibition assay suggested that a fusion protein retaining both properties of huBChE and hSA is produced in vitro and in vivo. The production of the fusion protein in the milk of transgenic goats provided further evidence that sufficient quantities of BChE/hSA can be produced to serve as a cost-effective and reliable source of BChE for prophylaxis and post-exposure treatment.
ESTHER : Huang_2008_BMC.Biotechnol_8_50
PubMedSearch : Huang_2008_BMC.Biotechnol_8_50
PubMedID: 18485214

Title : Genome biology of Actinobacillus pleuropneumoniae JL03, an isolate of serotype 3 prevalent in China - Xu_2008_PLoS.One_3_e1450
Author(s) : Xu Z , Zhou Y , Li L , Zhou R , Xiao S , Wan Y , Zhang S , Wang K , Li W , Jin H , Kang M , Dalai B , Li T , Liu L , Cheng Y , Zhang L , Xu T , Zheng H , Pu S , Wang B , Gu W , Zhang XL , Zhu GF , Wang S , Zhao GP , Chen H
Ref : PLoS ONE , 3 :e1450 , 2008
Abstract : Actinobacillus pleuropneumoniae is the etiologic agent of porcine contagious pleuropneumonia, a cause of considerable world wide economic losses in the swine industry. We sequenced the complete genome of A. pleuropneumoniae, JL03, an isolate of serotype 3 prevalent in China. Its genome is a single chromosome of 2,242,062 base pairs containing 2,097 predicted protein-coding sequences, six ribosomal rRNA operons, and 63 tRNA genes. Preliminary analysis of the genomic sequence and the functions of the encoded proteins not only confirmed the present physiological and pathological knowledge but also offered new insights into the metabolic and virulence characteristics of this important pathogen. We identified a full spectrum of genes related to its characteristic chemoheterotrophic catabolism of fermentation and respiration with an incomplete TCA system for anabolism. In addition to confirming the lack of ApxI toxin, identification of a nonsense mutation in apxIVA and a 5'-proximal truncation of the flp operon deleting both its promoter and the flp1flp2tadV genes have provided convincing scenarios for the low virulence property of JL03. Comparative genomic analysis using the available sequences of other serotypes, probable strain (serotype)-specific genomic islands related to capsular polysaccharides and lipopolysaccharide O-antigen biosyntheses were identified in JL03, which provides a foundation for future research into the mechanisms of serotypic diversity of A. pleuropneumoniae.
ESTHER : Xu_2008_PLoS.One_3_e1450
PubMedSearch : Xu_2008_PLoS.One_3_e1450
PubMedID: 18197260
Gene_locus related to this paper: actp2-a3n347 , actp7-b3h2v1 , actp7-b3h2x2 , actpj-b0bpm3 , actpj-b0bqd8 , actpj-b0brq2

Title : Recombinant human butyrylcholinesterase from milk of transgenic animals to protect against organophosphate poisoning - Huang_2007_Proc.Natl.Acad.Sci.U.S.A_104_13603
Author(s) : Huang YJ , Huang Y , Baldassarre H , Wang B , Lazaris A , Leduc M , Bilodeau AS , Bellemare A , Cote M , Herskovits P , Touati M , Turcotte C , Valeanu L , Lemee N , Wilgus H , Begin I , Bhatia B , Rao K , Neveu N , Brochu E , Pierson J , Hockley DK , Cerasoli DM , Lenz DE , Karatzas CN , Langermann S
Ref : Proc Natl Acad Sci U S A , 104 :13603 , 2007
Abstract : Dangerous organophosphorus (OP) compounds have been used as insecticides in agriculture and in chemical warfare. Because exposure to OP could create a danger for humans in the future, butyrylcholinesterase (BChE) has been developed for prophylaxis to these chemicals. Because it is impractical to obtain sufficient quantities of plasma BChE to treat humans exposed to OP agents, the production of recombinant BChE (rBChE) in milk of transgenic animals was investigated. Transgenic mice and goats were generated with human BChE cDNA under control of the goat beta-casein promoter. Milk from transgenic animals contained 0.1-5 g/liter of active rBChE. The plasma half-life of PEGylated, goat-derived, purified rBChE in guinea pigs was 7-fold longer than non-PEGylated dimers. The rBChE from transgenic mice was inhibited by nerve agents at a 1:1 molar ratio. Transgenic goats produced active rBChE in milk sufficient for prophylaxis of humans at risk for exposure to OP agents.
ESTHER : Huang_2007_Proc.Natl.Acad.Sci.U.S.A_104_13603
PubMedSearch : Huang_2007_Proc.Natl.Acad.Sci.U.S.A_104_13603
PubMedID: 17660298

Title : Abnormal spreading and subunit expression of junctional acetylcholine receptors of paraspinal muscles in scoliosis associated with syringomyelia - Zhu_2007_Spine.(Phila.Pa.1976)_32_2449
Author(s) : Zhu Z , Qiu Y , Wang B , Yu Y , Qian B , Zhu F
Ref : Spine (Phila Pa 1976) , 32 :2449 , 2007
Abstract : STUDY DESIGN: A comparative study was performed among 2 groups of patients: Group A with scoliosis and syringomyelia and Group B with idiopathic scoliosis. OBJECTIVE: To investigate the denervation of paraspinal muscles and analyze its association with scoliosis in patients with syringomyelia. SUMMARY OF BACKGROUND DATA: The mechanism by which scoliosis develops secondary to syringomyelia remains unclear. Some authors hypothesize that scoliosis may be caused by an alteration in the innervation of the trunk musculature. Few studies, however, have been reported to testify the presence of denervation of the paraspinal muscles in scoliotic patients with syringomyelia.
METHODS: Forty-one children were enrolled in the study and were divided into 2 groups. Group A consisted of 25 patients with scoliosis associated with syringomyelia. Group B included 16 adolescents with idiopathic scoliosis. Bilateral biopsy of paraspinal muscles was performed during scheduled spinal surgery. Distribution of acetylcholine receptors (AChRs) and acetylcholinesterase was investigated by immunofluorescence staining. RT-PCR was performed to determine the AChRs subunit mRNA expression.
RESULTS: Immunostaining showed that 56% patients in Group A were scored positive for the loss of localization of AChRs to neuromuscular junction, while all Group B patients were negative. gamma-AChR subunit expression was detected in 65% patients in Group A while absent in all samples in Group B. There was no statistical significance of both the positive rate of abnormal spreading and that of gamma subunit expression of AChRs between the convex and concave side in Group A. CONCLUSION: The denervation of paraspinal muscles is present in some patients with scoliosis associated with syringomyelia. The size of the syrinx and the degree of cerebellar tonsillar descent might seem to have no relation to the denervation of paraspinal muscles.
ESTHER : Zhu_2007_Spine.(Phila.Pa.1976)_32_2449
PubMedSearch : Zhu_2007_Spine.(Phila.Pa.1976)_32_2449
PubMedID: 18090084

Title : Overexpression and characterization of a lipase from Bacillus subtilis - Ma_2006_Protein.Expr.Purif_45_22
Author(s) : Ma J , Zhang Z , Wang B , Kong X , Wang Y , Cao S , Feng Y
Ref : Protein Expr Purif , 45 :22 , 2006
Abstract : A novel plasmid, pBSR2, was constructed by incorporating a strong lipase promoter and a terminator into the original pBD64. A mature lipase gene from Bacillus subtilis strain IFFI10210, an existing strain for lipase expression, was cloned into the plasmid pBSR2 and transformed into B. subtilis A.S.1.1655. Thus, an overexpression strain, BSL2, was obtained. The yield of lipase is about 8.6 mg protein/g of wet weight of cell mass and 100-fold higher than that in B. subtilis strain IFFI10210. The recombinant lipase was purified in a three-step procedure involving ammonium sulfate fractionation, ion exchange, and gel filtration chromatography. Characterizations of the purified enzyme revealed a molecular mass of 24 kDa in sodium dodecyl sulfate-polyacrylamide gel electrophoresis, maximum activity at 43 degrees C and pH 8.5 for hydrolysis of p-nitrophenyl caprylate. The values of Km and Vm were found to be 0.37 mM and 303 micromol mg-1 min-1, respectively. The substrate specificity study showed that p-nitrophenyl caprylate is a preference of the enzyme. The metal ions Ca2+, K+, and Mg2+ can activate the lipase, whereas Fe2+, Cu2+, and Co2+ inhibited it. The activity of the lipase can be increased about 48% by sodium taurocholate at the concentration of 7 mM and inhibited at concentrations over 10 mM.
ESTHER : Ma_2006_Protein.Expr.Purif_45_22
PubMedSearch : Ma_2006_Protein.Expr.Purif_45_22
PubMedID: 16039141

Title : A complete gene cluster from Streptomyces nanchangensis NS3226 encoding biosynthesis of the polyether ionophore nanchangmycin - Sun_2003_Chem.Biol_10_431
Author(s) : Sun Y , Zhou X , Dong H , Tu G , Wang M , Wang B , Deng Z
Ref : Chemical Biology , 10 :431 , 2003
Abstract : The PKS genes for biosynthesis of the polyether nanchangmycin are organized to encode two sets of proteins (six and seven ORFs, respectively), but are separated by independent ORFs that encode an epimerase, epoxidase, and epoxide hydrolase, and, notably, an independent ACP. One of the PKS modules lacks a corresponding ACP. We propose that the process of oxidative cyclization to form the polyether structure occurs when the polyketide chain is still anchored on the independent ACP before release. 4-O-methyl-L-rhodinose biosynthesis and its transglycosylation involve four putative genes, and regulation of nanchangmycin biosynthesis seems to involve activation as well as repression. In-frame deletion of a KR6 domain generated the nanchangmycin aglycone with loss of 4-O-methyl-L-rhodinose and antibacterial activity, in agreement with the assignments of the PKS domains catalyzing specific biosynthetic steps.
ESTHER : Sun_2003_Chem.Biol_10_431
PubMedSearch : Sun_2003_Chem.Biol_10_431
PubMedID: 12770825
Gene_locus related to this paper: strna-NANE

Title : Effects of synthetic (-)-huperzine A on cholinesterase activities and mouse water maze performance - Liu_1998_Zhongguo.Yao.Li.Xue.Bao_19_413
Author(s) : Liu J , Zhang HY , Tang XC , Wang B , He XC , Bai DL
Ref : Acta Pharmacol Sin , 19 :413 , 1998
Abstract : AIM: To compare the effects of synthetic and natural (-)-huperzine A (Hup A) on cholinesterase and mouse water maze performance. METHODS: Spectrophotometry was used to determine cholinesterase activity. Mouse water maze was used to evaluate nootropic effect. RESULTS: The IC50 of synthetic Hup A for acetylcholinesterase (AChE) of rat cortex and rat erythrocyte membrane determined in vitro were 64.7 (52.6-79.5) and 53.9 (43.6-66.6) nmol.L-1, respectively, and for butyrylcholinesterase of rat serum was 53.6 (44.9-63.8) mumol.L-1. Synthetic Hup A 0.12-0.48 mg.kg-1 ig produced a dose-dependent inhibition of brain AChE in mice. Synthetic Hup A 0.05 mg.kg-1 ig attenuated scopolamine-induced impairment of spatial memory. The efficacy of synthetic Hup A was the same as natural Hup A. CONCLUSION: Synthetic Hup A yielded an in vitro and in vivo pharmacological profile of activities similar to that of natural Hup A.
ESTHER : Liu_1998_Zhongguo.Yao.Li.Xue.Bao_19_413
PubMedSearch : Liu_1998_Zhongguo.Yao.Li.Xue.Bao_19_413
PubMedID: 10375798