曲线微流体封闭揭示了适应性迁移中的细胞形状依赖的核机制传导
Yu-Chen Chen1, Yixin Liu1, Sai-Xi Yu1
1Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, Shanghai Key Laboratory of Medical Epigenetics, State Key Lab of Molecular Engineering of Polymers, Institutes of Biomedical Sciences, Department of Chemistry, Fudan University, Shanghai 200032, China.
ACS nano
|December 18, 2025
概括
细胞通过变形细胞核来适应曲的环境,激活信号通路 (cPLA2),从而增强迁移. 这一发现是了解细胞运动和癌症转移的关键.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 生物材料是一种生物材料.
背景情况:
- 细胞在体内遇到由细胞外基质 (ECM) 和邻近细胞形成的复杂,曲的微环境.
- 关于细胞迁移的现有研究主要研究在曲的表面上的迁移,对结合的限制和几何曲线的细胞反应的理解有限.
研究的目的:
- 为了研究细胞适应性对限制合的几何曲线的反应.
- 探索在生理学上相关的曲线微环境中细胞迁移的基础机制.
主要方法:
- 基于有限曲率的微流体芯片 (CCM-Chip) 的开发,以模拟体内物理线索.
- 设计一个微的单轴拉伸微器件来操纵细胞形状.
- 对细胞形状曲,核变形,细胞骨重塑和分子信号通路的分析.
主要成果:
- 在CCM芯片中的细胞显示形状曲,核变形和细胞骨重塑与局部几何曲线相关.
- 曲率诱导的细胞形状变化导致核外拉伸,启动下游的核反应.
- 核外伸展触发了cPLA2向核的招募,由内斯和SUN1介导,这是核机械传导的关键步骤.
- 激活的cPLA2促进了应力纤维两极分化和增强了细胞收缩性,促进了曲率驱动的细胞迁移.
结论:
- 这项研究引入了一种多功能生物仿真微设备,用于研究细胞迁移.
- 核变形诱导的cPLA2信号在曲环境中的适应性细胞迁移中起着至关重要的作用.
- 研究结果提供了针对癌症转移的治疗策略的见解.
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