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Ji C, Tanabe P, Shi Q, Qian L, McGruer V, Magnuson JT, Wang X, Gan J, Gadepalli RS, Rimoldi J, Schlenk D. Stage Dependent Enantioselective Metabolism of Bifenthrin in Embryos of Zebrafish ( Danio rerio) and Japanese Medaka ( Oryzias latipes). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:9087-9096. [PMID: 34106693 DOI: 10.1021/acs.est.1c01663] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Bifenthrin (BF) is a widely used pyrethroid that has been frequently detected in surface waters. Previous studies indicated that BF had antiestrogenic activity in zebrafish embryos but estrogenic activity in posthatch fish. To determine whether age-related differences in metabolism contribute to the endocrine effects in developing fish, embryos from zebrafish and Japanese medaka were exposed to BF before and after liver development. Since the commercial mixture of BF is an isomer-enriched product containing two enantiomers (1R-cis-BF and 1S-cis-BF), enantioselective metabolism was also evaluated. The estrogenic metabolite, 4-hydroxybifenthrin (4-OH-BF) was identified in zebrafish embryos, and formation was higher in animals after liver development (>48 hpf). Treatments with β-glucuronidase indicated that 4-OH-BF underwent conjugation in embryos. Formation was reduced by cotreatment of the cytochrome P450 (CYP450) inhibitor, ketoconazole. Formation of 4-OH-BF was greater when treated with 1R-cis-BF compared to the S-enantiomer. However, metabolites were not observed in medaka embryos. These data indicate enantioselective oxidation of BF to an estrogenic metabolite occurs in zebrafish embryos and, since it is increased after liver development, may partially explain estrogenic activity observed in older animals. The lack of activity in medaka suggests species-specific effects with BF metabolism and may influence risk assessment strategies in wildlife.
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Affiliation(s)
- Chenyang Ji
- Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou 310015, P. R. China
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Philip Tanabe
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Qingyang Shi
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Le Qian
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
- College of Sciences, China Agricultural University, Beijing, 100193, P. R. China
| | - Victoria McGruer
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Jason T Magnuson
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Xinru Wang
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
- Tea Research Institute, Chinese Academy of Agricultural Science, Hangzhou, 310008, P. R. China
| | - Jay Gan
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Rama S Gadepalli
- Department of Biomolecular Sciences, College of Pharmacy, University of Mississipi, University, Mississippi 38677, United States
| | - John Rimoldi
- Department of Biomolecular Sciences, College of Pharmacy, University of Mississipi, University, Mississippi 38677, United States
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
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Yan F, Liu X, Zhang S, Su J, Zhang Q, Chen J. Molecular Dynamics Exploration of Selectivity of Dual Inhibitors 5M7, 65X, and 65Z toward Fatty Acid Binding Proteins 4 and 5. Int J Mol Sci 2018; 19:ijms19092496. [PMID: 30142969 PMCID: PMC6164837 DOI: 10.3390/ijms19092496] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/14/2018] [Accepted: 08/18/2018] [Indexed: 12/11/2022] Open
Abstract
Designing highly selective inhibitors of fatty acid binding proteins 4 and 5 (FABP4 and FABP5) is of importance for treatment of some diseases related with inflammation, metabolism, and tumor growth. In this study, molecular dynamics (MD) simulations combined with molecular mechanics generalized Born surface area (MM-GBSA) method were performed to probe binding selectivity of three inhibitors (5M7, 65X, and 65Z) to FABP4/FABP5 with Ki values of 0.022/0.50 μM, 0.011/0.086 μM, and 0.016/0.12 μM, respectively. The results not only suggest that all inhibitors associate more tightly with FABP4 than FABP5, but also prove that the main forces driving the selective bindings of inhibitors to FABP4 and FABP5 stem from the difference in the van der Waals interactions and polar interactions of inhibitors with two proteins. Meanwhile, a residue-based free energy decomposition method was applied to reveal molecular basis that inhibitors selectively interact with individual residues of two different proteins. The calculated results show that the binding difference of inhibitors to the residues (Phe16, Phe19), (Ala33, Gly36), (Phe57, Leu60), (Ala75, Ala78), (Arg126, Arg129), and (Tyr128, Tyr131) in (FABP4, FABP5) drive the selectivity of inhibitors toward FABP4 and FABP5. This study will provide great help for further design of effective drugs to protect against a series of metabolic diseases, arteriosclerosis, and inflammation.
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Affiliation(s)
- Fangfang Yan
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| | - Xinguo Liu
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| | - Shaolong Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| | - Jing Su
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| | - Qinggang Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
| | - Jianzhong Chen
- School of Science, Shandong Jiaotong University, Jinan 250357, China.
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Li S, Jiang H, Wang Y, Liu Y, Shen X, Liang W, Hong Z. High-Throughput Chiral LC-MS/MS Method Using Overlapping Injection Mode for the Determination of Pantoprazole Enantiomers in Human Plasma with Application to Pharmacokinetic Study. Chirality 2016; 28:569-75. [DOI: 10.1002/chir.22616] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/15/2016] [Accepted: 05/25/2016] [Indexed: 01/20/2023]
Affiliation(s)
- Shengni Li
- Department of Pharmaceutical Analysis, School of Pharmacy; Second Military Medical University; People's Republic of China
- Bioanalytical Services; WuXi AppTec Co., Ltd., Waigaoqiao Free Trade Zone; Shanghai People's Republic of China
| | - Huafang Jiang
- Bioanalytical Services; WuXi AppTec Co., Ltd., Waigaoqiao Free Trade Zone; Shanghai People's Republic of China
| | - Yiya Wang
- Bioanalytical Services; WuXi AppTec Co., Ltd., Waigaoqiao Free Trade Zone; Shanghai People's Republic of China
| | - Yinli Liu
- Department of Pharmaceutical Analysis, School of Pharmacy; Second Military Medical University; People's Republic of China
| | - Xiaohang Shen
- Bioanalytical Services; WuXi AppTec Co., Ltd., Waigaoqiao Free Trade Zone; Shanghai People's Republic of China
| | - Wenzhong Liang
- Bioanalytical Services; WuXi AppTec Co., Ltd., Waigaoqiao Free Trade Zone; Shanghai People's Republic of China
| | - Zhanying Hong
- Department of Pharmaceutical Analysis, School of Pharmacy; Second Military Medical University; People's Republic of China
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Application of a high-throughput, parallel HPLC system for quantitative chiral analysis of pantoprazole. Bioanalysis 2015; 7:2981-90. [DOI: 10.4155/bio.15.215] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: Chromatographic separation of enantiomers is considered a task in analytical chemistry particularly for high sample throughput. This paper describes a high-throughput parallel HPLC–MS/MS method for the determination of pantoprazole enantiomers. Results: Baseline separation of pantoprazole enantiomers was achieved on a Chiralcel OZ-RH column in a run time of 4.5 min. Assays for enantiomers were linear with satisfactory intra- and inter-day precision and accuracy. The assay was suitable for high-throughput analysis as shown by its successful application to a chiral PK study in beagle dog. Conclusion: A high-throughput parallel HPLC–MS/MS assay for pantoprazole has been developed and validated. This method provides nearly twofold increased sample throughput, and was shown to be suitable for application in PK studies.
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Qiu T, Xiao H, Zhang Q, Qiu J, Yang Y, Wu D, Cao Z, Zhu R. Proteochemometric modeling of the antigen-antibody interaction: new fingerprints for antigen, antibody and epitope-paratope interaction. PLoS One 2015; 10:e0122416. [PMID: 25901362 PMCID: PMC4406442 DOI: 10.1371/journal.pone.0122416] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 02/20/2015] [Indexed: 01/12/2023] Open
Abstract
Despite the high specificity between antigen and antibody binding, similar epitopes can be recognized or cross-neutralized by paratopes of antibody with different binding affinities. How to accurately characterize this slight variation which may or may not change the antigen-antibody binding affinity is a key issue in this area. In this report, by combining cylinder model with shell structure model, a new fingerprint was introduced to describe both the structural and physical-chemical features of the antigen and antibody protein. Furthermore, beside the description of individual protein, the specific epitope-paratope interaction fingerprint (EPIF) was developed to reflect the bond and the environment of the antigen-antibody interface. Finally, Proteochemometric Modeling of the antigen-antibody interaction was established and evaluated on 429 antigen-antibody complexes. By using only protein descriptors, our model achieved the best performance ( R2=0.91,Qtest2=0.68) among peers. Further, together with EPIF as a new cross-term, our model ( R2=0.92,Qtest2=0.74) can significantly outperform peers with multiplication of ligand and protein descriptors as a cross-term ( R2≤0.81,Qtest2≤0.44). Results illustrated that: 1) our newly designed protein fingerprints and EPIF can better describe the antigen-antibody interaction; 2) EPIF is a better and specific cross-term in Proteochemometric Modeling for antigen-antibody interaction. The fingerprints designed in this study will provide assistance to the description of antigen-antibody binding, and in future, it may be valuable help for the high-throughput antibody screening. The algorithm is freely available on request.
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Affiliation(s)
- Tianyi Qiu
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Han Xiao
- Department of Computer Science, University of Helsinki, Helsinki, FI-00014, Finland
| | - Qingchen Zhang
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Jingxuan Qiu
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yiyan Yang
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Dingfeng Wu
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Zhiwei Cao
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- Shanghai Center for Bioinformation Technology, Shanghai 201203, China
- * E-mail: (RZ); (ZC)
| | - Ruixin Zhu
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
- School of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, Liaoning, China
- * E-mail: (RZ); (ZC)
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