PMID- 29338075 OWN - NLM STAT- MEDLINE DCOM- 20190808 LR - 20211204 IS - 1476-5381 (Electronic) IS - 0007-1188 (Print) IS - 0007-1188 (Linking) VI - 175 IP - 9 DP - 2018 May TI - Liver kinase B1/AMP-activated protein kinase-mediated regulation by gentiopicroside ameliorates P2X7 receptor-dependent alcoholic hepatosteatosis. PG - 1451-1470 LID - 10.1111/bph.14145 [doi] AB - BACKGROUND AND PURPOSE: Regulating P2X7 receptor-mediated activation of NLRP3 inflammasomes could be a therapeutic strategy to treat alcoholic hepatosteatosis. We investigated whether this process was modulated by gentiopicroside, the main active secoiridoid glycoside from Gentiana manshurica Kitagawa. EXPERIMENTAL APPROACH: In vivo models of acute and chronic alcoholic hepatosteatosis were established by intragastrically administered ethanol or using chronic plus binge ethanol feeding of Lieber-DeCarli liquid diet to male C57BL/6 mice. In vitro, HepG2 cells were treated with ethanol. RAW 264.7 macrophages and murine bone marrow-derived macrophages (BMDMs) were stimulated with LPS and ATP. KEY RESULTS: In both the acute and chronic alcohol-induced mouse hepatosteatosis models, gentiopicroside decreased serum aminotransferases and triglyceride accumulation. Up-regulated SREBP1, down-regulated PPARalpha and phosphorylated acetyl-CoA carboxylase caused by acute and chronic alcohol feeding were modulated by gentiopicroside, through the elevation of LKB1 and AMPK. Suppression of P2X7 receptor-NLRP3 activation by gentiopicroside inhibited IL-1beta production. In ethanol-exposed HepG2 cells, gentiopicroside reduced lipogenesis and promoted lipid oxidation via activation of P2X7 receptor-NLRP3 inflammasomes. Genetic or pharmacological blockade of P2X7 receptors enhanced AMPK activity and reduced SREBP1 expression in ethanol-treated HepG2 cells. Gentiopicroside down-regulated P2X7 receptor-mediated inflammatory responses in LPS/ATP-stimulated RAW 264.7 macrophages and BMDMs. IL-1beta from macrophages accelerated lipid accumulation in hepatocytes. Depleting macrophages by clodronate liposomes ameliorated alcoholic hepatosteatosis, and it was further alleviated by gentiopicroside. CONCLUSIONS AND IMPLICATIONS: Activation of LKB1/AMPK signalling by gentiopicroside was mediated by the P2X7 receptor-NLRP3 inflammasome, suggesting the therapeutic value of blocking P2X7 receptors in the treatment of alcoholic hepatosteatosis. CI - (c) 2018 The British Pharmacological Society. FAU - Li, Xia AU - Li X AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Zhang, Yu AU - Zhang Y AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Jin, Quan AU - Jin Q AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Xia, Kai-Li AU - Xia KL AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Jiang, Min AU - Jiang M AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Cui, Ben-Wen AU - Cui BW AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Wu, Yan-Ling AU - Wu YL AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Song, Shun-Zong AU - Song SZ AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Lian, Li-Hua AU - Lian LH AUID- ORCID: 0000-0002-6957-1317 AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. FAU - Nan, Ji-Xing AU - Nan JX AUID- ORCID: 0000-0002-6221-4309 AD - Key Laboratory for Natural Resource of Changbai Mountain and Functional Molecules, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, Jilin Province, 133002, China. AD - Clinical Research Center, Yanbian University Hospital, Yanji, Jilin Province, 133002, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180309 PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (Inflammasomes) RN - 0 (Interleukin-1beta) RN - 0 (Iridoid Glucosides) RN - 0 (Lipopolysaccharides) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (PPAR alpha) RN - 0 (Purinergic P2X Receptor Antagonists) RN - 0 (Receptors, Purinergic P2X7) RN - 0 (Sterol Regulatory Element Binding Protein 1) RN - 0 (Triglycerides) RN - 0WE09Z21RC (gentiopicroside) RN - 3K9958V90M (Ethanol) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 2.6.1.- (Transaminases) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.1 (Stk11 protein, mouse) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - EC 6.4.1.2 (Acetyl-CoA Carboxylase) MH - AMP-Activated Protein Kinases/*metabolism MH - Acetyl-CoA Carboxylase/metabolism MH - Adenosine Triphosphate MH - Animals MH - Cells, Cultured MH - Down-Regulation/drug effects MH - Ethanol/antagonists & inhibitors/pharmacology MH - Fatty Liver, Alcoholic/*metabolism/*prevention & control MH - Humans MH - Inflammasomes/metabolism MH - Interleukin-1beta/metabolism MH - Iridoid Glucosides/*pharmacology MH - Lipid Peroxidation/drug effects MH - Lipogenesis/drug effects MH - Lipopolysaccharides MH - Macrophages/metabolism MH - Male MH - Mice MH - NLR Family, Pyrin Domain-Containing 3 Protein/metabolism MH - PPAR alpha/metabolism MH - Phosphorylation/drug effects MH - Protein Serine-Threonine Kinases/*metabolism MH - Purinergic P2X Receptor Antagonists/pharmacology MH - Receptors, Purinergic P2X7/drug effects/*metabolism MH - Sterol Regulatory Element Binding Protein 1/metabolism MH - Transaminases/blood MH - Triglycerides/blood MH - Up-Regulation/drug effects PMC - PMC5900996 EDAT- 2018/01/18 06:00 MHDA- 2019/08/09 06:00 PMCR- 2019/05/01 CRDT- 2018/01/17 06:00 PHST- 2017/09/20 00:00 [received] PHST- 2017/12/19 00:00 [revised] PHST- 2017/12/22 00:00 [accepted] PHST- 2018/01/18 06:00 [pubmed] PHST- 2019/08/09 06:00 [medline] PHST- 2018/01/17 06:00 [entrez] PHST- 2019/05/01 00:00 [pmc-release] AID - BPH14145 [pii] AID - 10.1111/bph.14145 [doi] PST - ppublish SO - Br J Pharmacol. 2018 May;175(9):1451-1470. doi: 10.1111/bph.14145. Epub 2018 Mar 9.