期刊
SCIENTIFIC REPORTS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep19276
关键词
-
资金
- Health Department, Science, and Technology Commision in Guizhou Province of China [gzwjkj2014-1-032]
Lung fibrosis is a major medical problem for the aging population worldwide. Fibroblast migration plays an important role in fibrosis. Focal Adhesion Kinase (FAK) senses the extracellular stimuli and initiates signaling cascades that promote cell migration. This study first examined the dose and time responses of FAK activation in human lung fibroblasts treated with platelet derived growth factor BB (PDGF-BB). The data indicate that FAK is directly recruited by integrin beta 1 and the subsequent FAK activation is required for fibroblast migration on fibronectin. In addition, the study has identified that alpha 5 beta 1 and alpha 4 beta 1 are the major integrins for FAK-mediated fibroblast migration on fibronect. In contrast, integrins alpha v beta 3, alpha v beta 6, and alpha v beta 8 play a minor but distinct role in fibroblast migration on fibronectin. FAK inhibitor significantly reduces PDGF-BB stimulated fibroblast migration. Importantly, FAK inhibitor protects bleomycin-induced lung fibrosis in mice. FAK inhibitor blocks FAK activation and significantly reduces signaling cascade of fibroblast migration in bleomycin-challenged mice. Furthermore, FAK inhibitor decreases lung fibrotic score, collagen accumulation, fibronectin production, and myofibroblast differentiation in in bleomycin-challenged mice. These data demonstrate that FAK mediates fibroblast migration mainly via integrin beta 1. Furthermore, the findings suggest that targeting FAK signaling is an effective therapeutic strategy against fibrosis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据