水的透驱动着瘤细胞在封闭的微环境中的迁移
Kimberly M Stroka1, Hongyuan Jiang2, Shih-Hsun Chen3
1Johns Hopkins Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, MD 21218, USA; Johns Hopkins Physical Sciences-Oncology Center, The Johns Hopkins University, Baltimore, MD 21218, USA; Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA.
Cell
|April 15, 2014
概括
定向的水运动驱动细胞迁移在狭窄的空间,即使当传统的机制失败. 这种透引擎模型揭示了在微环境中细胞运动的新途径.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 生理学 生理学 生理学
背景情况:
- 细胞迁移对于生理和病理过程至关重要.
- 在狭窄的空间中迁移可以独立于actin聚合和myosin II收缩性发生.
研究的目的:
- 研究一种在封闭环境中进行细胞迁移的替代机制.
- 阐明水透在微环境中的细胞运动中的作用.
主要方法:
- 综合实验和理论方法.
- 使用微流体和成像技术.
- 开发了一个数学模型 (奥斯摩斯发动机模型).
主要成果:
- 作为一个关键的迁移机制,在狭窄的空间中证明了定向的水透.
- 显示的瘤细胞建立了极化Na+/H+和水.
- 观察到净水和离子流驱动细胞位移.
结论:
- 介绍了一个取决于通过水透来调节细胞体积的替代细胞迁移机制.
- 凸显了透力在受限微环境内的细胞运动中的重要性.
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