脂肪细胞肝酸盐通过FGF1-介导的葡萄糖调节在小鼠中确定2型糖尿病的易感性
Chung-Jui Yu1, Ariane R Pessentheiner2, Sihao Liu3
1Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, CA, USA; Department of Pathology, Division of Microbiology & Immunology, University of Utah, School of Medicine, Salt Lake City, UT, USA; University of Utah Molecular Medicine Program, University of Utah, School of Medicine, Salt Lake City, UT, USA.
Molecular metabolism
|October 10, 2025
概括
脂肪组织中的肝硫酸盐 (HS) 对于维持葡萄糖平衡至关重要. 脂肪细胞中受损的HS通过破坏FGF1信号,使饮食诱导的胰岛素抵抗恶化,突出显示HS是预防2型糖尿病的关键因素.
科学领域:
- 代谢研究的研究.
- 脂肪组织生物学 脂肪组织生物学
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- 肥胖和脂质缩是胰岛素抵抗的主要驱动因素.
- 脂肪组织扩张的质量极大地影响了胰岛素抵抗的风险.
- 脂肪细胞在葡萄糖平衡和预防2型糖尿病方面发挥着关键作用.
研究的目的:
- 为了研究脂肪细胞肝酸盐 (HS) 在饮食压力期间葡萄糖平衡中的作用.
- 为了确定受损脂肪细胞HS对饮食诱导的代谢功能障碍的影响.
- 阐明脂肪细胞HS和FGF1信号在代谢调节中的机制联系.
主要方法:
- 利用独特的遗传小鼠模型研究脂肪细胞HS功能.
- 用高脂肪饮食诱导高血糖和胰岛素抵抗.
- 分析了HS扰动对FGF1信号传递和FGF1-FGFR1-介导内分泌的影响.
主要成果:
- 脂肪细胞HS的遗传妥协加速了高脂肪饮食引起的高血糖症和胰岛素抵抗,独立于体重增加.
- 脂肪细胞HS受损的内源性FGF1信号的破坏.
- 改变的脂肪细胞HS组成对FGF1-FGFR1-介导的内分泌产生了负面影响,但没有改善葡萄糖平衡.
结论:
- 脂肪细胞HS组成是对2型糖尿病易感性的关键决定因素.
- 内源性脂肪细胞FGF1代谢途径严重依赖于HS.
- 向脂肪细胞HS可能为预防或治疗2型糖尿病提供一种新的策略.
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