通过调节ITGB4/mTORC2/p53信号通路,FLRT2可以防止内皮细胞衰老和血管衰老
Hyun Jung Hwang1,2, Donghee Kang1,2,3, Jae-Ryong Kim4
1Research Center for Controlling Intercellular Communication and.
JCI insight
|April 8, 2024
概括
富含纤维素白蛋白的跨膜蛋白2 (FLRT2) 防止内皮细胞衰老和血管衰老. 较低的FLRT2表达加速了衰老,而过度表达则逆转了它,表明了治疗潜力.
科学领域:
- 血管生物学 血管生物学
- 细胞衰老 细胞衰老
- 衰老的研究研究.
背景情况:
- 在健康和疾病中,富含纤维内素蛋白转膜蛋白2 (FLRT2) 的功能在很大程度上仍未被定义.
- 内皮细胞衰老和血管衰老是与年龄有关的心血管疾病的关键因素.
研究的目的:
- 研究FLRT2在内皮细胞衰老和血管衰老中的作用.
- 阐明FLRT2影响这些过程的分子机制.
主要方法:
- 在老化的内皮细胞和老化的血管组织中对FLRT2表达的定量分析.
- 研究FLRT2在衰老途径中的作用,包括mTORC2,AKT和p53.
- 评估FLRT2与整合素子单元β4 (ITGB4) 的相互作用.
- 在体内研究使用FLRT2沉默和过度表达在血管衰老的小鼠模型.
主要成果:
- 在衰老的内皮细胞和老化的血管组织中,FLRT2的表达减少.
- FLRT2通过mTORC2,AKT和p53信号通路调节内皮细胞衰老.
- FLRT2直接与ITGB4相互作用,促进其酸化,这对于在FLRT2耗尽后诱导衰老至关重要.
- 在小鼠中,FLRT2缺乏加速了血管衰老,而其过度表达改善了过早衰老的表型.
结论:
- FLRT2对内皮细胞衰老和血管衰老起着保护作用.
- 向FLRT2可能为预防老化相关的血管衰老和相关心血管疾病提供了一种新的治疗策略.
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