通过miR-217/FOXO3轴调节内皮细胞衰老
Yi-Sheng Khor1, Pooi-Fong Wong2
1Molecular Ageing Research Group, Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603, Wilayah Persekutuan, Kuala Lumpur, Malaysia.
Biogerontology
|July 21, 2025
概括
血管功能障碍与衰老的内皮细胞有关. 这项研究揭示了miR-217通过向FOXO3促进内皮细胞衰老,影响血管健康和血管生成.
科学领域:
- 血管生物学 血管生物学
- 细胞衰老 细胞衰老
- 分子生物学分子生物学
背景情况:
- 内皮细胞衰老有助于血管功能障碍.
- miR-217和FOXO3与细胞衰老有关,但它们在内皮细胞中的相互作用尚不清楚.
研究的目的:
- 研究miR-217/FOXO3轴在内皮复制性衰老 (RS) 中的作用.
- 确定miR-217是否直接向FOXO3并影响内皮细胞功能和血管生成.
主要方法:
- 已建立的年轻和RS人静脉内皮细胞 (HUVEC) 模型.
- 使用RT-qPCR,免疫阻塞,双露西法酶记者测定,以及用于基因操纵的隐形病毒载体 (miR-217模仿/抑制剂,FOXO3敲击).
主要成果:
- 在RS HUVEC中,miR-217和衰老标志物增加,FOXO3.3降低.
- 证实FOXO3是一个直接的miR-217目标.
- 通过减少FOXO3和增加p16INK4a,miR-217过度表达促进了年轻HUVEC细胞的衰老和血管新生受损.
- 淘汰FOXO3加速衰老,而miR-217抑制部分挽救了淘汰细胞中的血管生成潜力.
结论:
- miR-217/FOXO3轴是内皮细胞衰老的关键调节器.
- miR-217通过向FOXO3.3,促进内皮衰老并阻碍血管生成.
- 在维持内皮功能方面,FOXO3发挥着至关重要的作用,独立于其在衰老过程中通过miR-217的调节.
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