|
Author:
Date:
2020-12-05
[Abstract] The linker of nucleoskeleton and cytoskeleton (LINC) complex is responsible for tethering the nucleus to the cytoskeleton, providing a pathway for the cell’s nucleus to sense mechanical signals from the environment. Recently, we explored the role of the LINC complex in the development of glandular epithelial acini, such as those found in kidneys, breasts, and other organs. Acini developed with disrupted LINC complexes exhibited a loss of structural integrity, including filling of the lumen structures. As part of our investigation, we performed a mechanical indentation assay of LINC disrupted and undisrupted MDCK II cells using a micro-indentation instrument mounted above a laser-scanning confocal microscope. Through a combination of force measurements acquired from the ...
[摘要] [摘要]的接头nucleoskeleton和细胞骨架(LINC)络合物负责核束缚到细胞骨架,提供用于细胞核从环境感测机械信号的通路。最近,我们探索了LINC复合物在腺上皮腺泡(例如在肾脏,乳房和其他器官中发现的腺泡)的发育中的作用。用破坏的LINC复合物开发的Acini表现出结构完整性的丧失,包括管腔结构的填充。作为研究的一部分,我们使用安装在激光扫描共聚焦显微镜上方的微型压痕仪对LINC破坏的和未破坏的MDCK II细胞进行了机械压痕测定。通过从微压痕仪获得的力测量值和从荧光图像获得的接触面积测量值的组合,我们确定了痤疮结构破裂的平均接触压力。在这里,我们提供了微压痕仪设计的详细描述,以及为执行这些生物压痕测量而开发的实验步骤。此外,我们讨论了确定痤疮结构破裂压力所需的数据分析步骤。尽管此协议专注于单个腺腺突的压痕,但此处介绍的方法可适用于针对2D和3D生物学系统执行各种机械压痕实验。
关键字:生物压痕,微压痕,生物力学,组织力学,核力学,LINC复合体,腺泡发育
[背景]生物压痕测试已成为手段长度尺度从亚细胞生物聚合物以多细胞组织结构来测量生物系统的材料性质。具有微米级探针和接触面积为10-100 nm 2的纳米压痕仪已用于测量生物聚合物和单个细胞的材料特性(Stolz等,2004; Sen等,2005; ...
|