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- W2023255019 abstract "Mechanical properties of living cells are important for cell shape, motility, and cellular responses to biochemical and biophysical signals. Although these properties are predominantly determined by the cytoskeleton, relatively little is known about the mechanical organization of cells at a subcellular level. We have studied the cell cortex of bovine pulmonary artery endothelial cells (BPAECs) using atomic force microscopy (AFM) and confocal fluorescence microscopy (CFM). We show that the contrast in AFM imaging of these cells derives in large part from differences in local mechanical properties, and AFM images of BPAEC reveal the local micromechanical architecture of their apical cortex at approximately 125 nm resolution. Mechanically the cortex in these cells is organized as a polygonal mesh at two length scales: a coarse mesh with mesh element areas approximately 0.5-10 microm2, and a finer mesh with areas <0.5 microm2. These meshes appear to be intertwined, which may have interesting implications for the mechanical properties of the cell. Correlated AFM-CFM experiments and pharmacological treatments reveal that actin and vimentin are components of the coarse mesh, but microtubules are not mechanical components of the BPAEC apical cortex." @default.
- W2023255019 created "2016-06-24" @default.
- W2023255019 creator A5008496635 @default.
- W2023255019 creator A5049318662 @default.
- W2023255019 date "2005-01-01" @default.
- W2023255019 modified "2023-10-08" @default.
- W2023255019 title "Micromechanical Architecture of the Endothelial Cell Cortex" @default.
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- W2023255019 doi "https://doi.org/10.1529/biophysj.104.049965" @default.
- W2023255019 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1305044" @default.
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