人类肥胖通过上调IL-1β表达来降低脂肪组织衍生中酶干细胞/胃细胞的抗炎功能
Authors Li Xing1,2, Xiangyang Zhu1, Nattawat Klomjit1
1Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, United States.
Stem cells (Dayton, Ohio)
|August 21, 2025
概括
肥胖会改变介质层细胞 (MSC) 的表观遗传标记,损害它们的抗炎功能,特别是通过IL-1β. 向IL-1β可能会恢复MSC在肥胖个体中的治疗潜力.
科学领域:
- 表观遗传学
- 免疫学
- 复原医学
背景情况:
- 介质细胞 (MSC) 对于组织修复至关重要.
- 肥胖会对MSC功能和治疗效果产生负面影响.
- 表观遗传修饰,如5-甲基细胞素 (5hmC),可能是肥胖引起的MSC功能障碍的基础.
研究的目的:
- 研究人类肥胖对5hmC脂肪系MSC的影响.
- 为了确定肥胖是否会改变MSC的抗炎能力,重点是Interleukin-1β (IL-1β).
- 在肥胖的MSC中评估向IL-1β的治疗潜力.
主要方法:
- 从肥胖和瘦肉个体收集脂肪组织用于MSC隔离.
- 使用MeDIP-seq和RNA-seq分析5hmC和mRNA表达特征的MSC.
- 在小鼠中评估了MSC的疗效,并研究了IL-1β在MSC与巨细胞相互作用中的作用.
主要成果:
- 与瘦肉的MSC相比,肥胖的MSC在5hmC修饰和基因表达方面表现出显著的差异.
- 在肥胖的MSC中改变的基因显着参与IL-1β调节.
- 在肥胖的小鼠中,MSC的使用导致脏IL- 1β和M1巨细胞的增加,脏输液的减少,IL- 1β沉默改善了巨细胞M1极化.
结论:
- 肥胖诱导MSC的表观遗传和基因表达变化,通过IL-1β影响其抗炎功能.
- IL- 1β 是肥胖引起的MSC功能障碍的一个关键媒介.
- 向IL-1β是一种潜在的治疗策略,可以改善肥胖患者的MSC功能.
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