PMID- 34740292 OWN - NLM STAT- MEDLINE DCOM- 20211109 LR - 20211109 IS - 1873-6424 (Electronic) IS - 0269-7491 (Linking) VI - 291 DP - 2021 Dec 15 TI - Inhibition of hydroxylated polychlorinated biphenyls (OH-PCBs) on sulfotransferases (SULTs). PG - 118214 LID - S0269-7491(21)01796-6 [pii] LID - 10.1016/j.envpol.2021.118214 [doi] AB - Polychlorinated biphenyls (PCBs) have been demonstrated as a kind of the persistent organic pollutants (POPs) that could exert complicated influences towards metabolism in human bodies. Since hydroxylated polychlorinated biphenyls (OH-PCBs) are important metabolites of PCBs, our study focuses on investigating the potential inhibitory capability of OH-PCBs on four human sulfotransferase (SULT) isoforms. P-nitrophenol (PNP) was utilized as nonselective probe substrate for this study, and recombinant SULT isoforms were utilized as the enzyme resources. Ultra-performance liquid chromatography (UPLC)-UV detecting system was used to analyze PNP and its metabolite PNP-sulfate. As result, 100 muM of most tested OH-PCBs significantly inhibited the activity of four SULT isoforms. Concentration-dependent inhibition of OH-PCBs towards SULTs was found, and half inhibition concentration values (IC(50)) of some inhibition processes were determined. Inhibition kinetics (inhibition kinetic type and parameters) were determined using 4'-OH-PCB106 as the representative OH-PCB, SULT1B1 and SULT1E1 as representative SULT isoforms. The inhibition kinetic parameters (K(i)) were 1.73 muM and 1.81 muM for the inhibition of 4'-OH-PCB106 towards SULT1B1 and SULT1E1, respectively. In silico docking simulation was utilized to analyze the inhibition capability of 2'-OH-PCB5, 4'-OH-PCB9, 2'-OH-PCB12 towards SULT1A3.All these results obtained in this study are helpful for further understanding the toxicity of PCBs. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Jia, Ruo-Yong AU - Jia RY AD - Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China. FAU - Zhang, Zhi-Peng AU - Zhang ZP AD - Department of Surgery, Peking University Third Hospital, Beijing, China. FAU - Qin, Guo-Qiang AU - Qin GQ AD - Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China. FAU - Zhang, Wei AU - Zhang W AD - Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China. FAU - Yang, Kun AU - Yang K AD - Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China. FAU - Liu, Yong-Zhe AU - Liu YZ AD - Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China. FAU - Jiang, Changtao AU - Jiang C AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University, Beijing, China. FAU - Fang, Zhong-Ze AU - Fang ZZ AD - Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China; National Demonstration Center for Experimental Preventive Medicine Education, Tianjin Medical University, Tianjin, 300070, China; Tianjin Center for International Collaborative Research in Environment, Nutrition and Public Health, Tianjin, China. Electronic address: fangzhongze@tmu.edu.cn. LA - eng PT - Journal Article DEP - 20210923 PL - England TA - Environ Pollut JT - Environmental pollution (Barking, Essex : 1987) JID - 8804476 RN - 0 (Sulfates) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - EC 2.8.2.- (Sulfotransferases) SB - IM MH - Chromatography, Liquid MH - Humans MH - Hydroxylation MH - *Polychlorinated Biphenyls/toxicity MH - Sulfates MH - Sulfotransferases/metabolism OTO - NOTNLM OT - Human sulfotransferases (SULTs) OT - Hydroxylated polychlorinated biphenyls (OH-PCBs) OT - In vitro-in vivo extrapolation (IVIVE) OT - Inhibition EDAT- 2021/11/07 06:00 MHDA- 2021/11/10 06:00 CRDT- 2021/11/06 01:01 PHST- 2021/04/01 00:00 [received] PHST- 2021/09/17 00:00 [revised] PHST- 2021/09/19 00:00 [accepted] PHST- 2021/11/06 01:01 [entrez] PHST- 2021/11/07 06:00 [pubmed] PHST- 2021/11/10 06:00 [medline] AID - S0269-7491(21)01796-6 [pii] AID - 10.1016/j.envpol.2021.118214 [doi] PST - ppublish SO - Environ Pollut. 2021 Dec 15;291:118214. doi: 10.1016/j.envpol.2021.118214. Epub 2021 Sep 23.