在3T3-L1脂肪细胞中,CTRP4通过IRS-1 / PI3K / AKT通路改善了德甲诱导的胰岛素耐药性
Maireyanmu Rouzi1, Xi Sun1, Luguang Sheng1
1Department of Endocrinology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, P.R. China.
Molecular medicine reports
|January 30, 2026
概括
血清CTRP4水平与超重和肥胖个体的胰岛素抵抗 (IR) 有负相关性. 在脂肪细胞中CTRP4治疗减少了脂质积累,并通过IRS-1/PI3K/AKT通路改善了葡萄糖吸收.
科学领域:
- 内分泌学 在内分泌学.
- 代谢综合征是代谢综合征的一种.
- 分子生物学分子生物学
背景情况:
- 肥胖影响全球超过25亿成年人,导致胰岛素抵抗 (IR).
- 脂肪组织功能障碍是肥胖中IR病原体的主要驱动因素.
- 与C1q/TNF相关的蛋白4 (CTRP4) 在代谢健康中的作用需要进一步阐明.
研究的目的:
- 在超重/肥胖患者中研究血清CTRP4水平与IR之间的关联.
- 在细胞模型中评估CTRP4对IR的影响和机制.
主要方法:
- 用ELISA测量98名超重/肥胖患者的血清CTRP4水平.
- 在CTRP4和HOMA-IR之间进行了相关性分析 (对IR的恒常模型评估).
- 在体外研究使用德克萨米他诱导的3T3-L1脂肪细胞来评估CTRP4对脂质积累,葡萄糖吸收和胰岛素信号通路标记物 (IRS-1,PI3K,AKT,GLUT4) 的影响.
主要成果:
- 血清中CTRP4水平与BMI,HOMA-IR,腰围和腹部周长有负相关性.
- 在3T3-L1脂肪细胞中,CTRP4治疗显著降低了脂质积累和增加了葡萄糖吸收.
- CTRP4提高了IRS-1,PI3K和AKT酸化,以及在IR脂肪细胞中的GLUT4表达.
结论:
- 血清CTRP4度与超重/肥胖个体的胰岛素抵抗有负相关性.
- 通过抑制脂质积累和促进葡萄糖吸收,CTRP4显示出潜在的治疗效果.
- CTRP4通过IRS-1/PI3K/AKT信号通路发挥其作用,增强脂肪细胞中的GLUT4表达.
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