PMID- 30248539 OWN - NLM STAT- MEDLINE DCOM- 20190301 LR - 20190301 IS - 1950-6007 (Electronic) IS - 0753-3322 (Linking) VI - 108 DP - 2018 Dec TI - Effect of silibinin on CFLAR-JNK pathway in oleic acid-treated HepG2 cells. PG - 716-723 LID - S0753-3322(18)33548-0 [pii] LID - 10.1016/j.biopha.2018.09.089 [doi] AB - AIMS: Silibinin is a flavonolignan from milk thistle with many pharmacological activities including lipid-lowering and antioxidant. Caspase 8 and Fas-associated protein with death domain-like apoptosis regulator (CFLAR) is an important target gene in regulating non-alcoholic steatohepatitis (NASH). At present, the effect of silibinin on CFLAR-JNK pathway related to NASH was unknown. Here the effect of silibinin on CFLAR-JNK pathway and its downstream target genes involved in lipid metabolism, glucose uptake, oxidative stress and inflammatory response were studied in oleic acid (OA)-treated HepG2 cells. MAIN METHODS: OA-treated HepG2 cells were employed as a in vitro model of steatosis, insulin resistance and oxidative stress. The model cells were then treated by silibinin (5, 20, 50, and 100 muM) for 24 h and detected for the related indicators as follows: (1) cellular triglycerides (TG), nitric oxide (NO) and glucose uptake; (2) the mRNA levels of the sterol regulatory element binding protein-1C (SREBP-1C), patatin-like phospholipase domain containing 3 (PNPLA3) and peroxisome proliferator activated receptor-alpha (PPARalpha); (3) the protein levels of PPARalpha, SREBP-1C, PNPLA3, CFLAR, phosphorylated c-Jun N-terminal kinase (pJNK), phosphatidylinositol 3-kinase (PI3K), phosphorylated serine-threonine protein kinase (pAKT), nuclear factor E2-related factor 2 (NRF2), cytochrome P450 2E1 (CYP2E1) and 4A (CYP4A). KEY FINDINGS: Compared to the control, OA-treatment led to a result as follows: (1) increased the intracellular levels of TG and NO; (2) up-regulated the protein expression of SREBP-1C, PNPLA3, pJNK, CYP 2E1 and CYP 4A; (3) decreased the uptake of 2-NBDG; (4) down-regulated the protein expression of CFLAR, PPARalpha, PI3K, pAKT and NRF2. Compared to OA-treated HepG2 cells, silibinin treatment could improve the indicators as follows: (1) decreased the intracellular levels of TG and NO; (2) down-regulated the protein expression of SREBP-1C, PNPLA3, pJNK, CYP 2E1 and CYP 4A; (3) increased the uptake of 2-NBDG; (4) up-regulated the protein expression of CFLAR, PPARalpha, PI3K, pAKT and NRF2. SIGNIFICANCE: Silibinin can ameliorate some metabolic alterations and induce some molecular changes by activating the CFLAR-JNK pathway and thereby regulating its downstream target genes involved in lipid metabolism (PPARalpha, SREBP-1C and PNPLA3), glucose uptake (PI3K-AKT), oxidative stress (NRF2, CYP2E1, CYP4A) and inflammatory response(NO) in OA-treated HepG2 cells demonstrating its possible use in ameliorating various symptoms of NASH. CI - Copyright (c) 2018 Elsevier Masson SAS. All rights reserved. FAU - Liu, Yayun AU - Liu Y AD - Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei University, Wuhan, Hubei, 430062, PR China. FAU - Yu, Qingqing AU - Yu Q AD - Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei University, Wuhan, Hubei, 430062, PR China. FAU - Chen, Yong AU - Chen Y AD - Hubei Province Key Laboratory of Biotechnology of Chinese Traditional Medicine, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei University, Wuhan, Hubei, 430062, PR China. Electronic address: cy101610@qq.com. LA - eng PT - Journal Article DEP - 20180921 PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (CASP8 and FADD-Like Apoptosis Regulating Protein) RN - 0 (CFLAR protein, human) RN - 0 (Triglycerides) RN - 2UMI9U37CP (Oleic Acid) RN - 31C4KY9ESH (Nitric Oxide) RN - 4RKY41TBTF (Silybin) RN - IY9XDZ35W2 (Glucose) SB - IM MH - CASP8 and FADD-Like Apoptosis Regulating Protein/*metabolism MH - Cell Line, Tumor MH - Down-Regulation/drug effects MH - Glucose/metabolism MH - Hep G2 Cells MH - Humans MH - Inflammation/drug therapy MH - Insulin Resistance/physiology MH - Lipid Metabolism/drug effects MH - MAP Kinase Signaling System/*drug effects MH - Nitric Oxide/metabolism MH - Oleic Acid/*pharmacology MH - Oxidative Stress/drug effects MH - Signal Transduction/drug effects MH - Silybin/*pharmacology MH - Triglycerides/blood MH - Up-Regulation/drug effects OTO - NOTNLM OT - CFLAR OT - HepG2 cells OT - NASH OT - NRF2 OT - Silibinin EDAT- 2018/09/25 06:00 MHDA- 2019/03/02 06:00 CRDT- 2018/09/25 06:00 PHST- 2018/05/29 00:00 [received] PHST- 2018/09/15 00:00 [revised] PHST- 2018/09/16 00:00 [accepted] PHST- 2018/09/25 06:00 [pubmed] PHST- 2019/03/02 06:00 [medline] PHST- 2018/09/25 06:00 [entrez] AID - S0753-3322(18)33548-0 [pii] AID - 10.1016/j.biopha.2018.09.089 [doi] PST - ppublish SO - Biomed Pharmacother. 2018 Dec;108:716-723. doi: 10.1016/j.biopha.2018.09.089. Epub 2018 Sep 21.