Hepatocyte growth factor regulates the TGF-β1-induced proliferation, differentiation and secretory function of cardiac fibroblasts.

Abstract:

:Cardiac fibroblast (CF) proliferation and transformation into myofibroblasts play important roles in cardiac fibrosis during pathological myocardial remodeling. In this study, we demonstrate that hepatocyte growth factor (HGF), an antifibrotic factor in the process of pulmonary, renal and liver fibrosis, is a negative regulator of cardiac fibroblast transformation in response to transforming growth factor‑β1 (TGF‑β1). HGF expression levels were significantly reduced in the CFs following treatment with 5 ng/ml TGF‑β1 for 48 h. The overexpression of HGF suppressed the proliferation, transformation and the secretory function of the CFs following treatment with TGF‑β1, as indicated by the attenuated expression levels of α-smooth muscle actin (α‑SMA) and collagen I and III, whereas the knockdown of HGF had the opposite effect. Mechanistically, we identified that the phosphorylation of c‑Met, Akt and total protein of TGIF was significantly inhibited by the knockdown of HGF, but was significantly enhanced by HGF overexpression. Collectively, these results indicate that HGF activates the c‑Met‑Akt‑TGIF signaling pathway, inhibiting CF proliferation and transformation in response to TGF‑β1 stimulation.

journal_name

Int J Mol Med

authors

Yi X,Li X,Zhou Y,Ren S,Wan W,Feng G,Jiang X

doi

10.3892/ijmm.2014.1782

subject

Has Abstract

pub_date

2014-08-01 00:00:00

pages

381-90

issue

2

eissn

1107-3756

issn

1791-244X

journal_volume

34

pub_type

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