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Fibrinogen Drives Dystrophic Muscle Fibrosis Via a TGFbeta/alternative Macrophage Activation Pathway

Abstract

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-1beta, drives the synthesis of transforming growth factor-beta (TGFbeta) by mdx macrophages, which in turn induces collagen production in mdx fibroblasts. Fibrinogen-produced TGFbeta further amplifies collagen accumulation through activation of profibrotic alternatively activated macrophages. Fibrinogen, by engaging its alphavbeta3 receptor on fibroblasts, also directly promotes collagen synthesis. These data unveil a profibrotic role of fibrinogen deposition in muscle dystrophy.

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References
1.
Bronte V, Zanovello P . Regulation of immune responses by L-arginine metabolism. Nat Rev Immunol. 2005; 5(8):641-54. DOI: 10.1038/nri1668. View

2.
Suh T, Holmback K, Jensen N, Daugherty C, Small K, Simon D . Resolution of spontaneous bleeding events but failure of pregnancy in fibrinogen-deficient mice. Genes Dev. 1995; 9(16):2020-33. DOI: 10.1101/gad.9.16.2020. View

3.
Suelves M, Lopez-Alemany R, Lluis F, Aniorte G, Serrano E, Parra M . Plasmin activity is required for myogenesis in vitro and skeletal muscle regeneration in vivo. Blood. 2002; 99(8):2835-44. DOI: 10.1182/blood.v99.8.2835. View

4.
Stein M, Keshav S, Harris N, Gordon S . Interleukin 4 potently enhances murine macrophage mannose receptor activity: a marker of alternative immunologic macrophage activation. J Exp Med. 1992; 176(1):287-92. PMC: 2119288. DOI: 10.1084/jem.176.1.287. View

5.
Saito T, Takenaka M, Miyai I, Yamamoto Y, Matsumura T, Nozaki S . Coagulation and fibrinolysis disorder in muscular dystrophy. Muscle Nerve. 2001; 24(3):399-402. DOI: 10.1002/1097-4598(200103)24:3<399::aid-mus1012>3.0.co;2-b. View