PMID- 35988735 OWN - NLM STAT- MEDLINE DCOM- 20221010 LR - 20230407 IS - 1873-2968 (Electronic) IS - 0006-2952 (Linking) VI - 204 DP - 2022 Oct TI - Schisandrol B protects against cholestatic liver injury by inhibiting pyroptosis through pregnane X receptor. PG - 115222 LID - S0006-2952(22)00316-1 [pii] LID - 10.1016/j.bcp.2022.115222 [doi] AB - Previously, we demonstrated that Schisandrol B (SolB) protected against lithocholic acid (LCA)-induced cholestatic liver injury (CLI) through pregnane X receptor (PXR). Additionally, growing evidence has revealed that pyroptosis is involved in CLI. Whether the hepatoprotective effect of SolB driven by PXR activation is related to pyroptosis in CLI remains unclear. First, the hepatoprotective effect of SolB was confirmed, as evidenced by the decreased mortality, morphological and histopathological changes, and biochemical parameters. The upregulated serum lactic dehydrogenase (LDH) level, increased number of TUNEL-positive cells, and formation of hepatocyte membrane pores induced by LCA were significantly alleviated after SolB pretreatment, indicating that SolB attenuated LCA-induced hepatocyte damage. Further analysis revealed that both NOD-like receptor protein 3 (NLRP3) inflammasome-induced canonical pyroptosis and apoptosis protease activating factor-1 (Apaf-1) pyroptosome-induced noncanonical pyroptosis were significantly inhibited after SolB pretreatment, as illustrated by the decreased expression levels of NLRP3, ASC, caspase-1, and GSDMD and the levels of Apaf-1, caspase-11 p20, caspase-3 p20, and GSDME. Furthermore, the activation of the NF-kappaB and FoxO1 signaling pathways was inhibited after SolB pretreatment. In addition, the activation of PXR via SolB was proven by luciferase reporter gene assays and the upregulation of PXR targets. The results illustrated that SolB could significantly inhibit NLRP3 inflammasome-induced canonical pyroptosis through the PXR/NF-kappaB/NLRP3 axis and inhibit Apaf-1 pyroptosome-induced noncanonical pyroptosis through the PXR/FoxO1/Apaf-1 axis. Collectively, this study revealed that SolB protected against CLI by inhibiting pyroptosis through PXR, providing new insights for understanding the molecular mechanism of SolB as a promising anti-cholestatic agent. CI - Copyright (c) 2022. Published by Elsevier Inc. FAU - Liang, Hangfei AU - Liang H AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. FAU - Yang, Xiao AU - Yang X AD - NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China. FAU - Li, Huilin AU - Li H AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. FAU - Wang, Xinhui AU - Wang X AD - School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen, China. FAU - Su, Haiguo AU - Su H AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. FAU - Li, Xuan AU - Li X AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. FAU - Tian, Jianing AU - Tian J AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. FAU - Cai, Chenghui AU - Cai C AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. FAU - Huang, Min AU - Huang M AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China. Electronic address: huangmin@mail.sysu.edu.cn. FAU - Bi, Huichang AU - Bi H AD - Guandong Provincial Key Laboratory of New Drug Design and Evaluation, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China; NMPA Key Laboratory for Research and Evaluation of Drug Metabolism & Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China. Electronic address: bihchang@smu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220818 PL - England TA - Biochem Pharmacol JT - Biochemical pharmacology JID - 0101032 RN - 0 (Cyclooctanes) RN - 0 (Dioxoles) RN - 0 (Inflammasomes) RN - 0 (Lignans) RN - 0 (NF-kappa B) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (Pregnane X Receptor) RN - 58546-54-6 (schizandrol B) RN - 5QU0I8393U (Lithocholic Acid) RN - EC 1.- (Oxidoreductases) RN - EC 1.13.12.- (Luciferases) RN - EC 3.4.22.- (Caspase 3) SB - IM EIN - Biochem Pharmacol. 2023 May;211:115526. PMID: 37028254 MH - Caspase 3/metabolism MH - *Cholestasis/chemically induced MH - Cyclooctanes MH - Dioxoles MH - Humans MH - Inflammasomes/metabolism MH - Lignans MH - Lithocholic Acid/metabolism MH - Liver/metabolism MH - Luciferases/metabolism MH - NF-kappa B/metabolism MH - NLR Family, Pyrin Domain-Containing 3 Protein/metabolism MH - Oxidoreductases/metabolism MH - Pregnane X Receptor/metabolism MH - *Pyroptosis OTO - NOTNLM OT - Apoptotic protease activating factor-1 OT - Cholestatic liver injury OT - NOD-like receptor protein 3 OT - Pregnane X receptor OT - Pyroptosis OT - Schisandrol B COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/08/22 06:00 MHDA- 2022/10/12 06:00 CRDT- 2022/08/21 19:32 PHST- 2022/06/06 00:00 [received] PHST- 2022/08/12 00:00 [revised] PHST- 2022/08/12 00:00 [accepted] PHST- 2022/08/22 06:00 [pubmed] PHST- 2022/10/12 06:00 [medline] PHST- 2022/08/21 19:32 [entrez] AID - S0006-2952(22)00316-1 [pii] AID - 10.1016/j.bcp.2022.115222 [doi] PST - ppublish SO - Biochem Pharmacol. 2022 Oct;204:115222. doi: 10.1016/j.bcp.2022.115222. Epub 2022 Aug 18.