在非酒精性脂肪肝炎中,Mdivi1通过抑制JNK/MFF信号传递来改善线粒体功能障碍
Ying Quan1,2, Diwen Shou1,2, Siqi Yang1,2
1Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, Guangzhou, China.
Journal of gastroenterology and hepatology
|October 15, 2023
概括
线粒体分裂抑制剂1 (Mdivi1) 通过恢复线粒体功能和减少肝损伤,有效地治疗小鼠的非酒精性脂肪肝炎 (NASH). 这项研究突出了Mdivi1的重点.
科学领域:
- 肝病学和代谢疾病
- 线粒体生物学和动力学
- 药理学和药物发现
背景情况:
- 线粒体功能障碍是非酒精性脂肪肝炎 (NASH) 进展的关键驱动因素.
- 线粒体分裂抑制剂1 (Mdivi1) 向的是胺相关蛋白1 (Drp1) 介导的线粒体裂变.
- 在NASH中Mdivi1的治疗潜力和分子机制在很大程度上仍未被探索.
研究的目的:
- 在饮食诱导的非酒精性脂肪肝炎 (NASH) 鼠标模型中研究Mdivi1的治疗疗效.
- 阐明Mdivi1对NASH的保护作用的潜在分子机制.
主要方法:
- 在使用高脂肪/高胆固醇 (HFHC) 或甲氨酸和胆缺乏 (MCD) 饮食的小鼠中确立的NASH.
- 向NASH模型小鼠服用Mdivi1 (5mg/kg/天) 或安慰剂.
- 评估肝脏表型,基因表达,巨细胞两极分化,线粒体功能和亡标志物.
主要成果:
- Mdivi1治疗显著改善了NASH表型,包括减少肝脏体重,胰岛素耐药性和肝脂积累.
- 通过抑制Drp1激活,Mdivi1抑制了炎症基因表达,减少了M1巨细胞的透,并减弱了线粒体裂变.
- Mdivi1降低了线粒体的活性氧物种 (ROS) 和DNA损伤,同时可能抑制JNK/MFF通路以减少肝细胞亡.
结论:
- Mdivi1通过恢复线粒体平衡和功能,显示出对饮食诱导的纳氏瘤有显著的保护作用.
- 通过抑制JNK/MFF通路,减少线粒体功能障碍和亡,Mdivi1的治疗益处可能会得到介导.
- Mdivi1代表了NASH的有希望的治疗候选者,需要进一步的临床研究.
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