SFAlab:在附着细胞中以图像为基础量化机械活跃的腹部动应力纤维
Dylan Mostert1,2, Janine Grolleman1,2, Mark C van Turnhout1
1Department of Biomedical Engineering, Laboratory for Cell and Tissue Engineering, Eindhoven University of Technology, Eindhoven, Netherlands.
Frontiers in cell and developmental biology
|October 2, 2023
概括
一个新的工具箱,SFAlab,准确地量化了腹部动因应力纤维 (SFs) 和它们与焦点粘附的关系. 该工具增强了对细胞矩阵机械相互作用和RhoA通路的理解.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 机械生物学 机械生物学
背景情况:
- 腹腔动因应力纤维 (SFs) 对于细胞矩阵力传递和机械感知至关重要.
- 现有的量化工具对腹部SF及其与焦点粘附 (FA) 的相互作用缺乏特异性.
- 了解互惠机制需要精确分析腹部SF动态.
研究的目的:
- 开发和验证一个图像分析工具箱,SFAlab,用于量化腹部SFs.
- 为了分析每个FA的腹部SF和它们的空间分布.
- 为机械生物学研究提供一个开源工具.
主要方法:
- 基于图像分析的计算工具箱的开发,SFAlab.
- 在各种条件下使用人类胎儿心脏纤维细胞的验证.
- 腹部SFs,FA,细胞和细胞核的量化.
- 通过Rho 激酶抑制调节actin聚合.
主要成果:
- 即使有图像缺陷,SFAlab也可以准确地检测腹部SF.
- 该工具对用户主观性和实验文物具有强大的防御能力.
- 抑制罗基纳酶显著减少腹腔SF形成和每FA的腹腔SF.
- 证明了RhoA途径在腹部SF形成中的重要性.
结论:
- SFAlab是一个强大的,用户友好的工具,用于量化腹部SF和FA.
- 这项研究强调了RhoA通路在腹部SF动态中的关键作用.
- 斯法实验室推进了细胞矩阵机制互惠研究.
相关概念视频
Tension Response at Adherens Junctions
2.7K
The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
2.7K
Cell-matrix's Response to Mechanical Forces
2.7K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
2.7K


