通过怀孕X受体的肝诱导的CYP3A11/3A4功能障碍对LPS诱导的肝CYP3A11/3A4功能的逆转作用。
摘要来源:
j Ethnopharmacol。 2019年1月30日; 229:246-255。 EPUB 2018 10月18日。PMID: 30342195“> 30342195 Lv
Article Affiliation:Hai-Yan Sun
Abstract:ETHNOPHARMACOLOGICAL RELEVANCE: Ginseng (Panax ginseng C. A. Meyer), a traditional Chinese medicine, is widely used in the adjunctive therapy of the liver diseases.
研究的目的: 人参皂苷是人参中的一种主要活性成分。尽管人参皂苷的肝保护机制,例如抗氧化,抗炎症和抗凋亡,但对人参的影响知之甚少奥塞德斯对肝脏中的药物代谢。由于CYP3A11/3A4是催化肝脏药物代谢的主要酶,因此对肝病进展过程中酶表达的研究将获得有关肝药物代谢的宝贵信息。这项研究的目的是确定人参皂苷对脂多糖(LPS)损伤的人HEPG2细胞和小鼠肝CYP3A11/3A4表达的影响。 We hypothesize that ginsenosides are important to stabilize CYP3A11/3A4 expression in an injured liver.
MATERIALS AND METHODS: In this study, LPS was intraperitoneally intermittently injected to induce the liver injury in mice.将人参皂苷术内给予小鼠7天,以治疗肝损伤。进行血清生化分析和组织病理学研究,以评估人参固醇的肝保护作用。在嗡嗡声中还评估了人参皂苷的作用在存在和不存在LP的情况下,HEPG2细胞。实时PCR和蛋白质印迹方法用于检测小鼠肝组织和人HEPG2细胞中CYP3A11/3A4的mRNA和蛋白质水平。 The reporter gene-transfected cells were used to identify upstream targets in HepG2 cells.
RESULTS: LPS injection in mice resulted in the up-regulation of pro-inflammatory cytokines such as IL-1β, IL-6 and TNF-α in liver, up-regulation of hepatic血清中的细菌,ALT,AST和ALP等酶以及肝脏中CYP3A11/3A4表达的下调。 Ginsenosides治疗逆转了LPS引起的促炎细胞因子和血清肝酶的上调。病理结果表明,人参皂苷会减少肝脏损伤。此外,Ginsenosides逆转了在LPS受伤的小鼠肝脏和LPS处理的HEPG2细胞中CYP3A11/3A4表达的降低。为了进一步研究调节机制,我们发现Ginsenosides增强了CYP3A4启动子的利福平诱导的妊娠受体(PXR)反式激活。 Treatment of hPXR-over-expressed cells with ginsenosides increased the rifampicin-inducible expression of CYP3A4 in a concentration-dependent manner.
CONCLUSION: Ginsenosides reverse the effects of LPS-induced hepatic CYP3A11/3A4 dysfunction, suggesting that受伤的肝脏中CYP3A11/3A4表达的稳定似乎是一种新型的人参固醇的肝保护机理。