ICAM-1通过粘附免疫细胞来识别前脂肪细胞并限制白色脂肪生成
Chunxing Zheng1,2,3, Jiayin Ye2, Qian Yang2
1The Fourth Affiliated Hospital of Soochow University and Institutes for Translational Medicine, Soochow University, Suzhou, China.
Cell death and differentiation
|August 14, 2025
概括
细胞间粘附分子-1 (ICAM-1) 标记了前脂肪细胞,并调节了脂肪组织的发育. 它通过调解免疫细胞相互作用来抑制白色脂肪生成,影响肥胖和胰岛素抵抗.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 代谢性疾病 代谢性疾病
背景情况:
- 单细胞RNA测序确定了ICAM-1作为一个前脂肪细胞标记物.
- 在脂肪组织恒温中ICAM-1+前脂质细胞的体内作用尚不清楚.
研究的目的:
- 研究ICAM-1表达前脂肪细胞在白色脂肪组织发育和重塑中的功能.
- 阐明ICAM-1影响脂肪生成和脂肪组织功能的机制.
主要方法:
- 产生和使用ICAM1+/CreERT2小鼠进行血统追踪和基因删除研究.
- 诱导高脂肪饮食以研究脂肪组织的反应.
- 预脂细胞增殖,分化和免疫细胞相互作用的分析.
主要成果:
- ICAM-1+原始体积极参与白色脂肪组织的发育和重塑.
- 高脂肪饮食显著增加了ICAM-1+前脂肪细胞的增殖和基分化.
- 肌体细胞中的ICAM-1缺乏症加剧了肥胖,脂质积累和胰岛素抵抗,突出显示了它在免疫细胞和脂肪细胞交叉反应中的作用.
- ICAM-1调解了前脂肪细胞和免疫细胞之间的粘附,作为白色脂肪生成的检查点.
结论:
- 在老鼠和人类脂肪组织中,ICAM-1标志着已被承诺的前脂肪细胞.
- ICAM-1通过促进免疫细胞-脂肪细胞的粘附来抑制脂肪生成,作为脂肪组织稳定和代谢健康的关键调节者.
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