宏观力量的ROCK-依赖机械传导驱动退行性脊髓疾病中的纤维化
Muhamed Hadzipasic1,2, Margaret S Sten1, Elie Massaad1
1Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Nature biomedical engineering
|May 29, 2025
概括
重复的脊柱力导致退行性疾病. 我们发现,纤维性带膜中的Rho相关激酶 (ROCK) 信号驱动肌纤维细胞积累,这表明ROCK抑制剂可以治疗脊髓退化.
科学领域:
- 生物医学工程 生物医学工程
- 脊柱生物力学 脊柱生物力学
- 细胞机械生物学 细胞机械生物学
背景情况:
- 脊柱上的慢性重复力导致退行性脊柱疾病.
- 连接机械应激与组织变化的确切机制尚不清楚.
研究的目的:
- 研究机械力诱导脊柱组织变化的分子机制.
- 探索Rho相关激酶 (ROCK) 信号在退行性脊髓疾病发展中的作用.
主要方法:
- 对纤维化的人类带膜组织的分析.
- 对Rho相关激酶 (ROCK) 信号通路的评估.
- 量化肌纤维细胞密度和光滑肌肉的actin α表达.
- 测量组织硬度和微压力.
主要成果:
- 暴露于高压力的带状带的纤维区域显示ROCK信号的升高.
- 在受压力地区观察到肌纤维细胞密度增加,表达光滑肌肉动蛋白α.
- 肌纤维细胞的积累依赖于ROCK信号,并局部化到增加硬度和微压力的区域.
- ROCK抑制部分减弱了压力诱导的转录反应.
结论:
- 岩石信号传递在调解脊柱中细胞对机械压力的反应中起着至关重要的作用.
- 准ROCK信号提供了对退行性脊髓疾病的潜在治疗策略.
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