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Quantitative analysis of cytoskeletal remodeling in vascular smooth muscle cells during phenotypic modulation

机译:表型调节过程中血管平滑肌细胞骨架重构的定量分析

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The authors developed a quantitative image processing technique to investigate cytoskeletal remodeling of the vascular smooth muscle cells (VSMCs). Cells were harvested from 1-day neonatal mice. Two different culture substrates, laminin and fibronectin, were used to modulate VSMCs phenotype. Contractile and synthetic. The authors also applied cyclic stretch to VSMCs, which increases contractile phenotype. Cytoskeletal fibers were stained using immunofluorescent techniques. The software was designed based on spatial Fourier transform to quantitatively analyzes cytoskeletal fiber orientation within the cell. Quantitative fiber orientation index (OI) was defined for individual cells. OI of VSMCs grown on laminin and fibronectin were 33/spl plusmn/14% and 21/spl plusmn/11%, respectively. OI of VSMCs grown with and without cyclic stretch were 40/spl plusmn/12% and 28/spl plusmn/10%, respectively. Thus, cytoskeletnl remodeling of VSMCs during phenotypic modulation can be studied quantitatively.
机译:作者开发了一种定量图像处理技术来研究血管平滑肌细胞(VSMC)的细胞骨架重塑。从1天的新生小鼠中收获细胞。两种不同的培养底物,层粘连蛋白和纤连蛋白,用于调节VSMCs表型。收缩和合成。作者还对VSMC应用了循环拉伸,从而增加了收缩表型。使用免疫荧光技术对细胞骨架纤维进行染色。该软件是基于空间傅立叶变换设计的,可定量分析细胞内细胞骨架纤维的方向。定义了单个细胞的定量纤维取向指数(OI)。在层粘连蛋白和纤连蛋白上生长的VSMC的OI分别为33 / spl plusmn / 14%和21 / spl plusmn / 11%。在有和没有循环拉伸的情况下生长的VSMC的OI分别为40 / spl加/ 12%和28 / spl加// 10%。因此,可以定量研究表型调节过程中VSMC的细胞骨架重塑。

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