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Abstract Title:

Resveratrol inhibits transforming growth factor-β-induced proliferation and differentiation of ex vivo human lung fibroblasts into myofibroblasts through ERK/Akt inhibition and PTEN restoration.

Abstract Source:

Exp Lung Res. 2011 Jan 26. Epub 2011 Jan 26. PMID: 21269063

Abstract Author(s):

Evelina Fagone, Enrico Conte, Elisa Gili, Mary Fruciano, Maria Provvidenza Pistorio, Debora Lo Furno, Rosario Giuffrida, Nunzio Crimi, Carlo Vancheri

Article Affiliation:

1Department of Internal Medicine and Medical Specialities, University of Catania, Catania, Italy.

Abstract:

ABSTRACT The authors investigated the role of resveratrol (RV), a natural poliphenolic molecule with several biological activities, in transforming growth factor-β (TGF-β)-induced proliferation and differentiation of ex vivo human pulmonary fibroblasts into myofibroblasts. The effects of RV treatment were evaluated by analyzing TGF-β-induced α-smooth muscle actin (α-SMA) expression and collagen production, as well as cell proliferation of both normal and idiopathic pulmonary fibrosis (IPF) lung fibroblasts. Results demonstrate that RV inhibits TGF-β-induced cell proliferation of both normal and pathological lung fibroblasts, attenuates α-SMA expression at both the mRNA and protein levels, and also inhibits intracellular collagen deposition. In order to understand the molecular mechanisms, the authors also investigated the effects of RV treatment on signaling pathways involved in TGF-β-induced fibrosis. The authors show that RV inhibited TGF-β-induced phosphorylation of both extracellular signal-regulated kinases (ERK1/2) and the serine/threonine kinase, Akt. Moreover, RV treatment blocked the TGF-β-induced decrease in phosphatase and tensin homolog (PTEN) expression levels.

Study Type : In Vitro Study

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