CD9调节肥胖症中巨细胞介导的脂肪组织重塑
Julia Chini1, Nicole DeMarco2, Dana V Mitchell3
1Department of Pediatrics, University of Pennsylvania, Philadelphia, United States of America.
JCI insight
|February 10, 2026
概括
CD9是脂质相关巨细胞 (LAMs) 上的一种蛋白质,驱动着与肥胖相关的炎症和纤维化. 在髓状细胞中去除CD9可以改善代谢健康并减少脂肪组织损伤,这表明CD9是代谢疾病的治疗点.
科学领域:
- 代谢性疾病研究研究.
- 免疫学 免疫学 免疫学
- 脂肪组织生物学 脂肪组织生物学
背景情况:
- 功能障碍的白色脂肪组织与与肥胖相关的代谢障碍有关.
- 脂肪组织巨细胞 (ATM) 在脂肪组织恒温中起着至关重要的作用,脂质相关巨细胞 (LAM) 在肥胖中表现出一种炎症性表型.
- 管理ATM功能的监管机制仍然不太清楚.
研究的目的:
- 调查CD9在肥胖期间LAMs激活和功能中的作用.
- 为了确定CD9是否有助于致病性LAM功能和代谢功能障碍.
主要方法:
- 使用了特定于骨髓细胞的CD9淘汰小鼠模型.
- 分析了脂肪组织的巨细胞-脂肪细胞相互作用和冠状结构的形成.
- 评估与纤维化和细胞外矩阵重塑相关的基因表达.
- 在饮食诱导的肥胖模型中评估了代谢结果.
主要成果:
- 骨髓细胞中CD9缺乏会损害ATM-脂肪细胞的粘附性,并减少冠状结构的形成.
- 骨髓状CD9的损失抑制了亲纤维和细胞外基因矩阵重塑基因表达.
- 减少脂肪组织纤维化和改善系统代谢参数在CD9淘汰赛小鼠中观察到.
- 在骨髓CD9丢失后,内脏脂肪组织的积累增加.
结论:
- CD9是致病性LAM功能的关键调节者,促进脂肪组织纤维化和炎症.
- 向CD9可能为肥胖相关的代谢疾病提供治疗策略.
- CD9在ATM-脂肪细胞相互作用中的作用对于肥胖中脂肪组织功能障碍至关重要.
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