与年龄相关的T细胞免疫力降低了循环的内皮原生细胞
Fang Zhang1, Qiuchen Zhao2, Shuzhen Guo1
1Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, 02129, USA.
Stem cells (Dayton, Ohio)
|October 23, 2025
概括
衰老会通过增加抑制性T细胞和FABP4来减少循环内皮原生细胞 (EPC),从而损害血管健康. 准FABP4或使用线粒体疗法可以逆转这种衰退,并对抗血管衰老.
科学领域:
- 老年学是指老年学的学科.
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
背景情况:
- 循环内皮原生细胞 (EPC) 随着血管衰老而下降.
- 驱动这种EPC减少的机制尚未完全理解.
研究的目的:
- 阐明与年龄相关的EPC衰退背后的分子机制.
- 研究FABP4和T细胞在血管衰老中的作用.
主要方法:
- 索马扫描蛋白质组学和西部斑点分析确定了FABP4.
- 使用FABP4抑制剂 (BMS309403),T细胞枯竭和老年小鼠线粒体治疗的体外和体内实验.
主要成果:
- 衰老会增加血和骨髓的FABP4.
- FABP4促进抑制性T细胞,并减少CXCR4在EPC上的表达.
- 阻断FABP4或耗尽T细胞恢复了EPCCXCR4表达.
- 在老年小鼠中,线粒体治疗降低了FABP4,减少了抑制性T细胞,并增加了循环中的EPC.
结论:
- 与年龄相关的T细胞免疫力有助于EPC失调.
- FABP4是与年龄相关的EPC衰退的关键调解者.
- FABP4代表了血管衰老的潜在治疗点.
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