FKBP5在脂肪组织功能中的作用:对肥胖和胰岛素敏感性的影响
Rutger Laterveer1, Susanne Hetty1, Argyri Mathioudaki1
1Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, Uppsala, Sweden.
Molecular and cellular endocrinology
|December 15, 2025
概括
人体脂肪组织中的FKBP51水平在肥胖中较低,影响胰岛素信号传递. 通过减肥手术减肥恢复了FKBP51的表达,这表明它在代谢健康中起着作用.
科学领域:
- 代谢研究的研究.
- 内分泌学 在内分泌学.
- 脂肪组织生物学 脂肪组织生物学
背景情况:
- FKBP51调节葡萄糖皮质体信号传递,并影响新陈代谢和胰岛素敏感性.
- 人体脂肪组织中FKBP51的确切功能尚不清楚.
- 肥胖与代谢功能障碍有关,包括胰岛素抵抗.
研究的目的:
- 研究FKBP51在人类脂肪组织中的作用.
- 确定FKBP51对脂肪细胞中葡萄糖代谢和胰岛素信号传递的影响.
- 为了检查体重减轻期间脂肪组织中FKBP51表达的变化.
主要方法:
- 从瘦身和肥胖个体的皮下 (SAT) 和口腔 (OAT) 脂肪组织中测量FKBP5基因表达.
- 在减肥手术后的SAT中分析了FKBP5表达.
- 在人类脂肪细胞中利用FKBP51敲击来评估对胰岛素信号和葡萄糖吸收的影响.
主要成果:
- 肥胖个体在SAT和OAT中具有较低的FKBP5基因表达,这与胰岛素抵抗 (HOMA-IR) 相相关.
- 腹部外科手术导致SAT中FKBP5表达的增加.
- 脂肪细胞中的FKBP51倒置减少了GLUT1表达和AKT酸化,但没有改变最大葡萄糖吸收.
结论:
- 脂肪组织FKBP51水平在肥胖中降低.
- 降低FKBP51会损害脂肪细胞的胰岛素信号传递,但对最大葡萄糖吸收的影响有限.
- 脂肪组织中的FKBP51表达对减肥有反应.
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