内皮细胞的硬度和类型驱动生物机械诱导的跨细胞孔的形成
Seyed Mohammad Siadat1,2, Haiyan Li1, Brigid A Millette1
1Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology/Emory University, Atlanta, GA, USA.
bioRxiv : the preprint server for biology
|November 18, 2024
概括
研究人员开发了一种新方法来研究Schlemm通道 (SC) 细胞中的跨细胞孔形成. 玻璃眼细胞显示孔隙形成受损,突出了细胞力学在这个过程中的作用.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 眼科医生 眼科 眼科
背景情况:
- 跨细胞毛孔对于穿越内皮壁的物质运输至关重要.
- 施莱姆运河 (SC) 内皮中毛孔形成障碍与青光眼有关.
- 目前用于研究毛孔形成的体外试验试验有限.
研究的目的:
- 开发一种用于研究人类内皮细胞中跨细胞孔形成的新平台.
- 研究生物力学力量在SC细胞毛孔形成中的作用.
- 为了比较健康和眼性SC细胞的孔隙形成.
主要方法:
- 开发了一种新的体外测定方法,使用磁珠和磁场来对SC细胞施加基底到顶端的力.
- 观察到动态的孔隙打开和关闭.
- 在健康和眼性SC细胞中评估细胞刚性和孔隙形成.
- 在SC和其他内皮细胞上测试了从顶点到基点的力应用.
主要成果:
- 这种新的平台成功地通过基底到角力诱导SC细胞中的细胞间孔.
- 孔隙形成是一个动态的过程.
- 玻璃眼性SC细胞表现出毛孔形成受损和硬度增加.
- 顶端到底部的力没有诱导SC细胞的孔隙,但在其他内皮细胞中确实如此.
结论:
- 细胞力学在内皮细胞中跨细胞毛孔的形成中发挥着中心作用.
- 开发的平台提供了一种新的方法来研究跨细胞毛孔形成的机制.
- 这些发现提供了与SC内皮细胞功能障碍相关的玻璃眼病原体的洞察.
相关概念视频
Cell-matrix's Response to Mechanical Forces
2.6K
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...
2.6K
Tension Response at Adherens Junctions
2.6K
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...
2.6K


