脂肪细胞中的纳迪利辛通过HIF1α和PPARγ调节胰岛素敏感性
Shintaro Matsuda1,2, Mikiko Ohno3,4, Kiyoto Nishi2
1Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin-Kawahara-cho, Sakyo- ku, Kyoto, 606-8507, Japan.
Scientific reports
|October 28, 2025
概括
脂肪细胞纳迪利辛 (NRDC) 影响胰岛素敏感性和葡萄糖耐受性,特别是在高脂肪饮食下. NRDC通过HIF1α和PPARγ通路调节这些,为与肥胖相关的2型糖尿病提供了新的见解.
科学领域:
- 代谢性疾病研究研究.
- 脂肪细胞生物学 脂肪细胞生物学
- 分子内分泌学分子内分泌学
背景情况:
- 肥胖是2型糖尿病 (T2DM) 的主要危险因素.
- 将肥胖与T2DM联系在一起的精确分子机制仍然不完全理解.
- 脂肪细胞的功能在代谢平衡中起着至关重要的作用.
研究的目的:
- 调查脂肪细胞纳迪利辛 (NRDC) 在调节胰岛素敏感性的作用.
- 阐明NRDC影响肥胖的代谢健康的分子途径.
主要方法:
- 产生和分析脂肪细胞特异性NRDC-knockout (Adipo-KO) 鼠标.
- 在高脂肪饮食 (HFD) 条件下评估葡萄糖耐受性和胰岛素敏感性.
- 在体外研究中使用NRDC敲除的3T3-L1脂肪细胞,包括基因表达和信号通路分析.
主要成果:
- 阿迪波-KO小鼠在HFD上表现出改善的葡萄糖耐受性和胰岛素敏感性.
- 脂肪细胞中NRDC的淘汰增强了胰岛素刺激的Akt酸化.
- NRDC 缺乏减少了细胞氧气消耗和缺氧诱导因子1-alpha (HIF1α) 表达,其作用由HIF1α和过氧酶增殖器激活受体玛 (PPARγ) 介导.
结论:
- 脂肪细胞NRDC是胰岛素敏感性的关键调节者.
- 脂肪细胞中的NRDC-HIF1α-PPARγ轴影响了对肥胖的代谢适应.
- 准NRDC可能为与肥胖相关的T2DM提供治疗策略.
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