力谱

Effect of Substrate Stiffness on Physicochemical Properties of Normal and Fibrotic Lung Fibroblasts.

ty10086 提交于 周四, 08/26/2021 - 12:42
The presented research aims to verify whether physicochemical properties of lung fibroblasts, modified by substrate stiffness, can be used to discriminate between normal and fibrotic cells from idiopathic pulmonary fibrosis (IPF). The impact of polydimethylsiloxane (PDMS) substrate stiffness on the physicochemical properties of normal (LL24) and IPF-derived lung fibroblasts (LL97A) was examined in detail. The growth and elasticity of cells were assessed using fluorescence microscopy and atomic force microscopy working in force spectroscopy mode, respectively.

基质硬度对正常和成纤维细胞理化性质的影响

ty10086 提交于 周三, 08/25/2021 - 16:48
本研究旨在验证经基质刚度修饰的肺成纤维细胞的理化性质能否用于鉴别正常细胞和纤维化细胞与特发性肺纤维化( IPF )。详细考察了聚二甲基硅氧烷( PDMS )基底刚度对正常( LL24 )和IPF来源肺成纤维细胞( LL97A )理化性质的影响。分别采用荧光显微镜和原子力显微镜在力谱模式下工作,评估细胞的生长和弹性。成纤维细胞的数量,以及它们的形状和排列方式,强烈地取决于基底的机械性能。此外,正常成纤维细胞与纤维化成纤维细胞相比仍较僵硬,这可能表明IPF来源的成纤维细胞在纤维化过程中受到损伤。利用飞行时间二次离子质谱考察正常和IPF来源的肺成纤维细胞的化学性质,并用主成分分析法( PCA )进行复杂分析,显示胆固醇和磷脂的分布存在显著差异。根据观察到的健康细胞和纤维化细胞的区别,细胞的力学特性可作为前瞻性的诊断生物标志物,以便快速可靠地鉴别特发性肺纤维化( IPF )。