PMID- 27052460 OWN - NLM STAT- MEDLINE DCOM- 20170307 LR - 20170817 IS - 1432-0738 (Electronic) IS - 0340-5761 (Linking) VI - 91 IP - 1 DP - 2017 Jan TI - Upregulation of hydroxysteroid sulfotransferase 2B1b promotes hepatic oval cell proliferation by modulating oxysterol-induced LXR activation in a mouse model of liver injury. PG - 271-287 LID - 10.1007/s00204-016-1693-z [doi] AB - Hydroxysteroid sulfotransferase 2B1b (SULT2B1b) sulfates cholesterol and oxysterols. Hepatic oval cells (HOCs), thought to be progenitor cells, can be triggered in chemically injured livers. The present study focused on the role of SULT2B1b in HOC proliferation after liver injury. Our experiments revealed that the expression of SULT2B1b was increased dramatically in a chemical-induced liver injury model, mainly in HOCs. Upon challenge with a hepatotoxic diet containing 0.1 % 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC), SULT2B1(-/-) mice presented alleviated liver injury and less HOC proliferation compared with wild-type (WT) mice, and these findings were verified by serum analysis, histopathology, immunofluorescence staining, RNA-seq, and Western blotting. HOCs derived from SULT2B1(-/-) mice showed lower proliferative capability than those from WT mice. SULT2B1b overexpression promoted growth of the WB-F344 hepatic oval cell line, whereas SULT2B1b knockdown inhibited growth of these cells. The IL-6/STAT3 signaling pathway also was promoted by SULT2B1b. Liquid chromatography and mass spectrometry indicated that the levels of 22-hydroxycholesterol, 25-hydroxycholesterol, and 24,25-epoxycholesterol were higher in the DDC-injured livers of SULT2B1(-/-) mice than in livers of WT mice. The above oxysterols are physiological ligands of liver X receptors (LXRs), and SULT2B1b suppressed oxysterol-induced LXR activation. Additional in vivo and in vitro experiments demonstrated that LXR activation could inhibit HOC proliferation and the IL-6/STAT3 signaling pathway, and these effects could be reversed by SULT2B1b. Our data indicate that upregulation of SULT2B1b might promote HOC proliferation and aggravate liver injury via the suppression of oxysterol-induced LXR activation in chemically induced mouse liver injury. FAU - Wang, Zhengyang AU - Wang Z AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Yang, Xiaoming AU - Yang X AD - Ningxia Medical University, Yinchuan, 750004, Ningxia, China. FAU - Chen, Liang AU - Chen L AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Zhi, Xiuling AU - Zhi X AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Lu, Hanyu AU - Lu H AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Ning, Yanxia AU - Ning Y AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Yeong, Joe AU - Yeong J AD - Department of Pathology, Singapore General Hospital, Singapore, Singapore. AD - Agency for Science, Technology and Research (A *STAR), Singapore Immunology Network (SIgN), Biopolis, Singapore, 138648, Singapore. FAU - Chen, Sifeng AU - Chen S AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Yin, Lianhua AU - Yin L AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. FAU - Wang, Xinhong AU - Wang X AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. wangxh@shmu.edu.cn. FAU - Li, Xiaobo AU - Li X AD - Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China. xbli@fudan.edu.cn. LA - eng PT - Journal Article DEP - 20160406 PL - Germany TA - Arch Toxicol JT - Archives of toxicology JID - 0417615 RN - 0 (3,5-diethoxycarbonyl-1,4-dihydrocollidine) RN - 0 (Biomarkers) RN - 0 (Carcinogens) RN - 0 (Liver X Receptors) RN - 0 (Oxysterols) RN - 0 (Pyridines) RN - EC 2.8.2.- (SULT2B1b protein, mouse) RN - EC 2.8.2.- (Sulfotransferases) SB - IM MH - Animals MH - Biomarkers/blood/metabolism MH - Carcinogens/toxicity MH - Cell Line MH - Cell Proliferation/drug effects MH - Cell Shape/drug effects MH - Cells, Cultured MH - Chemical and Drug Induced Liver Injury/*metabolism/pathology/physiopathology MH - *Disease Models, Animal MH - Disease Progression MH - Female MH - Liver/*drug effects/metabolism/pathology/physiopathology MH - Liver Neoplasms/etiology MH - Liver X Receptors/*agonists/antagonists & inhibitors/genetics/metabolism MH - Male MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Oxysterols/metabolism/*pharmacology MH - Pluripotent Stem Cells/cytology/drug effects/metabolism/pathology MH - Pyridines/toxicity MH - RNA Interference MH - Sulfotransferases/antagonists & inhibitors/chemistry/genetics/*metabolism OTO - NOTNLM OT - Hepatic oval cells OT - Hydroxysteroid sulfotransferase 2B1 OT - LXR OT - Oxysterol OT - Proliferation EDAT- 2016/04/08 06:00 MHDA- 2017/03/08 06:00 CRDT- 2016/04/08 06:00 PHST- 2015/11/05 00:00 [received] PHST- 2016/03/21 00:00 [accepted] PHST- 2016/04/08 06:00 [pubmed] PHST- 2017/03/08 06:00 [medline] PHST- 2016/04/08 06:00 [entrez] AID - 10.1007/s00204-016-1693-z [pii] AID - 10.1007/s00204-016-1693-z [doi] PST - ppublish SO - Arch Toxicol. 2017 Jan;91(1):271-287. doi: 10.1007/s00204-016-1693-z. Epub 2016 Apr 6.