对糖尿病患者下肢肌肉内脂肪肌肉信号的洞察
Chang Gui1, Dakota R Kamm2, Jeremie L A Ferey2
1Department of Biomedical Engineering, Washington University, St. Louis, MO, USA.
Journal of clinical & translational endocrinology
|November 17, 2025
概括
糖尿病患者的肌肉内脂肪组织 (IMAT) 不显示炎症增加. 糖尿病肌芽细胞,而不是IMAT,不太可能融合,这表明糖尿病肌芽细胞内在功能障碍会影响肌肉再生.
科学领域:
- 肌肉生物学 肌肉生物学
- 代谢性疾病研究研究.
- 脂肪组织的功能
背景情况:
- 肌内脂肪组织 (IMAT) 可能会通过膜信号来损害肌肉功能.
- 除了胰岛素耐药性之外,IMAT信号的作用尚不清楚.
- 研究IMAT在神经细胞融合缺陷疾病中的作用至关重要.
研究的目的:
- 探索患有糖尿病和没有糖尿病的人类IMAT转录组.
- 评估IMAT在晚期肌肉病理中的肌细胞融合缺陷中的潜在作用.
- 为了比较IMAT和皮下 (SQ) 脂肪转录组及其对髓细胞融合的影响.
主要方法:
- 在受试者内部的设计比较了糖尿病和非糖尿病人进行截肢的IMAT和SQ脂肪.
- 对IMAT和SQ脂肪的转录组分析.
- 在体外培养的肌细胞暴露在由IMAT和SQ原始体条件的介质.
主要成果:
- 与SQ脂肪相比,糖尿病IMAT显示炎症途径减少,免疫细胞透减少.
- 与SQ.Q.相比,IMAT分泌的因素并没有独特地损害培养肌细胞融合.
- 糖尿病肌肉细胞捐赠者状态预测,当暴露在所有脂肪来源的条件介质中时,融合速率降低.
结论:
- 糖尿病IMAT并没有像假设的那样表现出一种促炎特征.
- 糖尿病神经细胞表现出固有的融合能力缺陷,独立于脂肪来源.
- IMAT - 肌细胞相互作用可能会对糖尿病患者的肌肉再生产生负面影响,这是由糖尿病肌细胞敏感性驱动的.
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