在模拟微重力条件下,PIEZO1通过增强CXCR4表达来促进内皮细胞的迁移
Yuan Wang1, Chengfei Li1, Ruonan Wang1
1Department of Aerospace Medical Training, School of Aerospace Medicine, Air Force Medical University, Xi'an 710032, China.
International journal of molecular sciences
|July 13, 2024
概括
微重力增加内皮细胞中机械敏感离子通道PIEZO1,促进细胞迁移. 这通过通过流量增强C-X-C化学受体4型 (CXCR4) 的表达而发生.
科学领域:
- 太空生物学空间生物学
- 细胞生物学 细胞生物学
- 心血管生理学心血管生理学
背景情况:
- 太空飞行改变了内皮细胞的功能,有助于心血管退化.
- 机械敏感的离子通道PIEZO1对于内皮细胞调节至关重要.
研究的目的:
- 在模拟微重力条件下,研究PIEZO1表达及其在人静脉内皮细胞 (HUVEC) 中的调节作用.
- 阐明PIEZO1在微重力条件下影响内皮细胞功能的机制.
主要方法:
- 模拟微重力使用一个二维clinostat.
- 定量实时聚合酶连锁反应 (qRT-PCR) 和西方斑点分析用于基因和蛋白质表达.
- 蛋白质组学分析以识别目标分子.
- 测量流入量. 测量流入量.
主要成果:
- 模拟的微重力显著增加了HUVECs中的PIEZO1表达.
- PIEZO1的上调促进了内皮细胞的迁移.
- 蛋白质组学确定了C-X-C化学因子受体4型 (CXCR4) 作为一个关键的PIEZO1目标.
- 通过 (Ca2+) 流入,PIEZO1增强了CXCR4的表达,这反过来又促进了细胞迁移.
结论:
- PIEZO1的升调是内皮细胞中模拟微重力的关键反应.
- 通过Ca2+流入,PIEZO1介导的CXCR4表达增强在微重力条件下驱动内皮细胞迁移.
- 研究结果表明,PIEZO1和CXCR4在微重力诱导的内皮细胞功能变化中起着关键作用.
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