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干细胞衍生因子-1 通过抑制肝细胞脂促进肝脏胰岛素抵抗
Chunfeng Lu1, Yuting Zhang2, Cuilian Sun3
1Department of Endocrinology, Secondary Affiliated Hospital of Nantong University and the First People's Hospital of Nantong, Nantong, Jiangsu, China.
Journal of cellular and molecular medicine
|January 24, 2025
概括
斯特罗姆细胞衍生因子-1 (SDF-1) 通过抑制肝细胞脂质化,促进肝脏的胰岛素抵抗. 中和SDF-1通过通过CXCR4/AKT/mTOR途径增强脂质,改善了胰岛素抵抗.
科学领域:
- 代谢过程中的代谢.
- 细胞生物学 细胞生物学
- 内分泌学 在内分泌学.
背景情况:
- 在肝脏中和脂肪酸的积累会损害肝细胞脂质,导致肝脏胰岛素抵抗 (IR).
- 众所周知,由肝细胞产生的细胞因子-1 (SDF-1) 是一种由肝细胞产生的细胞因子,可以抑制自.
- 肝脏IR有助于高血糖和脂质不良,这是2型糖尿病 (T2DM) 的标志.
研究的目的:
- 调查SDF-1是否通过抑制T2DM中的肝细胞脂来促进肝脏IR.
- 阐明SDF-1在肝脏IR中的作用中涉及的下游信号通路.
主要方法:
- 使用一种由高脂肪和高糖饮食 (HFHSD) 诱导的T2DM小鼠模型.
- 在实验室中检查了SDF-1表达及其与棕酸 (PA) 处理的肝细胞中的受体 (CXCR4,CXCR7) 的相互作用.
- 研究了SDF-1/CXCR4/AKT/mTOR信号通路对脂质和IR的影响.
主要成果:
- 中和SDF-1改善了肝脏IR,通过在HFHSD诱导的T2DM小鼠模型中促进肝细胞脂.
- 在PA治疗的肝细胞中,SDF-1的表达和释放增加,与CXCR4和CXCR7结合.
- 在PA治疗的肝细胞中,SDF-1抑制了脂质,特别是通过CXCR4,而不是CXCR7.
- 确定了SDF-1/CXCR4/AKT/mTOR通路作为抑制脂质和促进PA诱导的肝脏IR的关键调解者.
结论:
- 在T2DM中,SDF-1在促进肝脏IR方面发挥着至关重要的作用.
- 在对和脂肪酸的反应中,SDF-1通过CXCR4/AKT/mTOR途径抑制肝细胞脂质.
- 准SDF-1/CXCR4轴为T2DM中肝脏IR管理提供了一个潜在的治疗策略.
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