基质刚度对表皮单层在短时间内弹性力传递的影响
Aapo Tervonen1,2, Sanna Korpela1, Soile Nymark1
1BioMediTech, Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33520 Tampere, Finland.
Cellular and molecular bioengineering
|December 15, 2023
概括
细胞机械力受细胞外矩阵 (ECM) 刚性的影响. ECM刚度的梯度可以改变上皮细胞中的力分布和机械信号,影响疾病的发展.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 生物材料是一种生物材料.
背景情况:
- 机械力和微环境显著影响细胞行为.
- 皮质细胞与细胞外基质 (ECM) 相互作用,形成一种机械系统,对环境暗示如ECM刚性敏感.
- ECM度与包括瘤形成在内的各种病理有关,但它对多细胞系统中的力传导的影响需要进一步研究.
研究的目的:
- 研究细胞外矩阵 (ECM) 刚度及其异质性对表皮细胞系统中的快速力转导的影响.
- 了解ECM刚度梯度如何影响机械信号和细胞变形.
- 探索细胞基弹性在机械信号隔离中的作用.
主要方法:
- 实验方法包括在弹性水凝上培养上皮质细胞,使用光纳米粒子.
- 使用微操纵器施加外力,记录基板和表皮变形.
- 开发和使用计算模型来复制实验,量化力分布,并模拟局部刚度梯度的场景.
主要成果:
- 基质刚度直接影响力转导和细胞变形,以应对外部力.
- 异质性,如ECM中的刚度梯度,显著改变细胞单层内的菌株再分配.
- 细胞基弹性作用于基细胞结点和基底焦点粘附之间作为机械隔离器.
结论:
- 增加的ECM刚度,可能模仿瘤微环境,可以机械隔离细胞并调节细胞间远距离的机械信号.
- 开发的计算模型为未来研究表皮单层与弹性基板相互作用的研究提供了宝贵的工具.
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