期刊
GENES & DEVELOPMENT
卷 22, 期 13, 页码 1747-1752出版社
COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
DOI: 10.1101/gad.465908
关键词
fibrinogen; DMD; mdx; muscular dystrophy; fibrosis; inflammation
资金
- NHLBI NIH HHS [R01 HL085357, HL085357] Funding Source: Medline
- NIAMS NIH HHS [AR049822, R01 AR049822] Funding Source: Medline
In the fatal degenerative Duchenne muscular dystrophy (DMD), skeletal muscle is progressively replaced by fibrotic tissue. Here, we show that fibrinogen accumulates in dystrophic muscles of DMD patients and mdx mice. Genetic loss or pharmacological depletion of fibrinogen in these mice reduced fibrosis and dystrophy progression. Our results demonstrate that fibrinogen-Mac-1 receptor binding, through induction of IL-1 beta, drives the synthesis of transforming growth factor-beta (TGF beta) by mdx macrophages, which in turn induces collagen production in mdx fibroblasts. Fibrinogen-produced TGF beta further amplifies collagen accumulation through activation of profibrotic alternatively activated macrophages. Fibrinogen, by engaging its alpha v beta 3 receptor on fibroblasts, also directly promotes collagen synthesis. These data unveil a profibrotic role of fibrinogen deposition in muscle dystrophy.
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