在小鼠中,BACH1控制肝脏胰岛素信号传递和葡萄糖平衡
Jiayu Jin1, Yunquan He1, Jieyu Guo1
1Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Department of Rheumatology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
Nature communications
|December 21, 2023
概括
BTB和CNC同源性1 (BACH1) 促进肝脏胰岛素抵抗和代谢综合征. 降低肝脏中的BACH1可以改善葡萄糖平衡和胰岛素敏感性,从而成为潜在的治疗点.
科学领域:
- 代谢性疾病研究研究.
- 肝病学 肝病学是一种肝病学.
- 分子内分泌学分子内分泌学
背景情况:
- 肝脏胰岛素抵抗是代谢综合征和非酒精性脂肪肝疾病 (NAFLD) 的关键因素.
- 在肥胖个体和NAFLD患者的肝细胞中,BTB和CNC同质性1 (BACH1) 水平增加.
研究的目的:
- 研究BACH1在肝脏胰岛素信号传递中的作用及其对代谢功能障碍的贡献.
- 探索BACH1作为胰岛素耐药性的潜在治疗点.
主要方法:
- 在高脂肪饮食 (HFD) 的雄性小鼠中,肝细胞特异的Bach1删除和过度表达.
- 研究BACH1与蛋白质-铁酸酶1B (PTP1B) 和胰岛素受体β (IR-β) 的相互作用.
- 评估胰岛素信号通路和葡萄糖平衡标志物.
主要成果:
- 在HFD治疗小鼠中的肝细胞特异Bach1缺失改善了高血糖症,胰岛素耐药性和肥胖症.
- 肝脏Bach1过度表达使这些代谢参数恶化.
- BACH1 直接与 PTP1B 和 IR-β 相互作用,其缺失通过减少 PTP1B-IR-β 相互作用来增强胰岛素信号传递.
- 在糖尿病小鼠中,肝脏BACH1倒置改善了高血糖和胰岛素敏感性.
结论:
- 肝脏BACH1在调节胰岛素信号传递和葡萄糖平衡中发挥着至关重要的作用.
- 针对肝脏BACH1可能为代谢综合征和相关疾病提供一种新的治疗策略.
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