阿尔多斯减少酶介导的线粒促进了肝细胞的上皮细胞-介质细胞过渡
Jingjing Yan1, Wenke Zhao1, Haoyu Wang1
1Department of Pharmacy, Wannan Medical College, Wuhu, Anhui, 241002, People's Republic of China.
Hepatic medicine : evidence and research
|October 7, 2025
概括
阿尔多减少酶 (AR) 驱动肝纤维化 (HF) 通过促进肝细胞上皮细胞-介质细胞过渡 (EMT) 通过受损的线粒细胞衰变. 抑制AR可能通过恢复线粒体功能和预防EMT为肝纤维化提供治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 生物化学 生物化学
- 病理学 病理学 病理学
背景情况:
- 缺陷的线粒细胞吸收有助于肝细胞上皮层-介质细胞转换 (EMT),这是肝纤维化 (HF) 的关键驱动因素.
- 阿尔多减少酶 (AR) 之前已经涉及促进EMT在膜上皮细胞.
- 这项研究研究了AR在调节线粒细胞衰变和影响肝细胞中EMT中的作用.
研究的目的:
- 为了确定阿尔多减少酶 (AR) 是否通过调节线粒细胞衰变而影响肝细胞中的上皮细胞-介质细胞过渡 (EMT).
- 阐明AR影响肝细胞功能和肝纤维化进展的分子机制.
主要方法:
- 组织学技术 (HE染色,马森三色,免疫组织化学,TEM) 用于评估肝损伤和线粒体损伤.
- 使用TGF-β1治疗诱导肝细胞EMT.
- 实验包括siRNA介导的基因沉默,AR抑制/过度表达,以及通过RT-qPCR分析AKT/mTOR通路激活,菌蛋白和EMT标记物,免疫光和西部斑点.
主要成果:
- 在体内,AR淘汰赛减少了AKT/mTOR酸化,增加了线粒体的标志物 (Pink1,Parkin,LC3II/I),减少了p62,减少了线粒体损伤,并缓解了HF.
- 在体外,AR敲击减弱了TGF-β1诱导的AKT/mTOR激活,恢复了线粒,减少了ROS,增加了线粒体膜潜力 (MMP) 和ATP,并逆转了EMT.
- AR过度表达具有相反的效果,加剧了AKT/mTOR激活,损害了线粒,并促进了EMT.
结论:
- 阿尔多减少酶 (AR) 促进肝细胞EMT,并加剧肝纤维化 (HF).
- 由AR诱导的AKT/mTOR通路的激活抑制了Pink1和Parkin,导致缺陷的线粒.
- 向AR可能是肝纤维化的潜在治疗策略.
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