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矩阵刚度通过TRPM7调节大鼠细胞中的Mkx表达

Yuta Tsuchiya¹, Hikaru Matsuo¹, Hiroshi Asahara^2,3

¹Laboratory of Animal Regeneration Systemology, Department of Life Sciences, School of Agriculture, Meiji University, Kanagawa, 214-8571, Japan.

Biochemistry and biophysics reports

|July 31, 2025

概括

肌细胞对矩阵刚度做出反应,影响像Mkx.这样的关键基因表达. TRPM7通道调节了这种反应,突出了硬度.

科学领域:

生物技术是生物技术.
生物材料科学生物材料科学
细胞生物学细胞生物学

背景情况:

肌细胞受到机械刺激,包括拉力和剪切应力.
细胞 (肌细胞) 对矩阵刚性的反应,这是一个关键的机械暗示,以前是不清楚的.
介质干细胞和肌衍生的干细胞显示了依赖于性的原性基因表达,但对纤维细胞的影响尚不清楚.

研究的目的:

为了研究矩阵刚度在调节细胞中的作用.
为了确定基因硬度依赖基因表达的基因机制.
探索TRPM7通道在肌细胞机械传导中的作用.

主要方法:

从老鼠尾巴和阿基里斯肌中获得的细胞培养在不同的硬度基板上.
使用定量方法分析肌相关基因的表达,包括Mkx.
通过敲击实验和离子操纵,研究TRPM7通道的功能.

主要成果:

细胞表现出硬度依赖的基因表达,特别是Mkx在40kPa时.
暂时受体潜能拉斯7 (TRPM7) 通道被确定为依赖度的Mkx表达的关键调节者.
TRPM7的敲击取消了依赖于硬度的Mkx表达,这表明通过Ca2+和/或Mg2+离子流入进行调节.

结论:

矩阵刚度显著影响着细胞基因表达,特别是Mkx.
TRPM7通道在调解矩阵刚度对细胞的影响方面发挥着至关重要的作用.
这项研究为肌机械传导和Mkx表达的调节提供了新的见解.

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