在活细胞中,普遍的物理应对伸展的反应
Xavier Trepat1, Linhong Deng, Steven S An
1Program in Molecular and Integrative Physiological Sciences, Harvard School of Public Health, Boston, Massachusetts 02115, USA.
Nature
|June 1, 2007
概括
细胞对伸展做出反应,就像心跳时一样,细胞骨的通用流体化. 这表明物理力量,不仅仅是信号,也控制细胞行为,揭示了细胞生物学中的简单规律.
科学领域:
- 细胞生物学 细胞生物学
- 软物质物理学 软物质物理学
- 生物物理学的生物物理.
背景情况:
- 细胞在生理过程中经历了显著的机械拉伸.
- 机械拉伸是一种已知的细胞生长,分化,迁移和基因表达的调节剂.
研究的目的:
- 为了研究细胞对短暂机械拉伸的反应.
- 确定控制在机械应力下细胞行为的普遍原则.
主要方法:
- 对各种细胞类型的短暂拉伸的实验应用.
- 对细胞骨动态和材料特性进行分析.
- 开发物理模型来描述细胞反应.
主要成果:
- 观察到细胞骨的普遍流体化,以应对短暂的拉伸.
- 这种反应是由物理力量介导的,而不仅仅是特定的信号通路.
- 细胞内部表现得像一个拥挤的,脆弱的软物质.
结论:
- 细胞对伸展的反应遵循简单的,普遍的现象学规律.
- 这些规律源于生物化学,分子拥挤和物理力量的相互作用.
- 这些发现将细胞生物学与软物质物理联系起来,突出显示了物理力量在细胞调节中的作用.
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