卡尔西托宁受体的降低调节和运动调节的血液使全身肌肉干细胞的增殖成为可能
Lidan Zhang1,2, Takayuki Kaji3, Ayasa Nakamura3
1Center for Medical Epigenetics, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, China. zhangsi89818@gmail.com.
Nature communications
|November 26, 2025
概括
运动通过机械负荷和信号通路的复杂相互作用触发肌肉干细胞 (MuSC) 增殖. 素受体 (CalcR) 信号传导和gp130通路是这个过程的关键调节者.
科学领域:
- 肌肉干细胞生物学 肌肉干细胞生物学
- 运动生理学 运动生理学
- 分子信号传递是分子信号传递.
背景情况:
- 静止肌肉干细胞 (MuSCs) 对于肌肉的修复和再生至关重要.
- 在运动过程中协调机械负荷,炼和静止信号的精确机制尚未完全被理解.
研究的目的:
- 阐明了调节运动诱导负荷后的 MuSC 活动的综合信号网络.
- 研究素受体 (CalcR) 和gp130信号在运动期间的MuSC增殖中的作用.
主要方法:
- 产生肌肉干细胞特异性的C-cKO小鼠.
- 分析MuSC的扩散,以应对增加的机械负荷和运动.
- 对蛋白激酶A (PKA) 和Yap1通路的药理学操纵.
- 在调节 MuSC 活性方面评估血清传递因子和细胞因子信号传递 (IL-6).
主要成果:
- 增加负载会降低素受体 (CalcR) 表达,而PKA激活会抑制MuSC的增殖.
- 训练过的C-cKO小鼠显示负载独立的MuSC增殖,这取决于gp130信号传递.
- 通过Yap1酸化,CalcR和gp130信号之间的交叉通话集成了机械负载和exerkine信号.
- 来自运动小鼠的血清在静止性C-cKO小鼠中促进了MuSC的增殖,这种增殖由IL-6介导.
结论:
- 一个集成的机制,包括增加负载,exerkine-gp130和CalcR信号,在运动期间微调MuSC活动.
- 卡尔克R信号传递和gp130通路在控制MuSC增殖方面具有对抗作用.
- Yap1酸化作为一个关键节点,整合这些信号通路来调节MuSC命运.
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