Abstract
The objective of this study was to determine the effect of resveratrol (Res) treatment on pathological scar fibroblasts and the changes in TGF-β1/Smads signaling pathway. For this purpose, cultured pathological scar fibroblasts were treated with various concentrations of Res (10, 50, and, 100 µmol/l), and the morphological changes in target cells were studied using scanning electron microscopy (SEM). The cellular proliferation was assessed by MTT assay; the mRNA and protein expressions of TGF-β1 and Smad-2,3,4,7 were determined by reverse transcription polymerase chain reaction (RT-PCR) and immunofluorescence assay, respectively. We found that Res-treated fibroblasts exhibited the typical apoptotic morphological changes. As shown by MTT assay, the OD values of Res-treated fibroblasts, as a measure of cell growth, were significantly lower than those of controls (P < 0.05). In addition, as compared to controls, TGF-β1 and Smad-2,3,4 mRNA/protein expression decreased but those of Smad7 increased in a dose-dependent manner (P < 0.05). It was, therefore, concluded that Res treatment inhibited the pathological scar fibroblast proliferation and induced cell apoptosis through the mechanism involving downregulation of TGF-β1, Smad-2,3,4, and upregulation of Smad7.
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This study was supported by Grant from the Scientific Research Projects of Xuzhou City, China.
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Zhai, Xx., Ding, Jc. & Tang, Zm. Resveratrol Inhibits Proliferation and Induces Apoptosis of Pathological Scar Fibroblasts Through the Mechanism Involving TGF-β1/Smads Signaling Pathway. Cell Biochem Biophys 71, 1267–1272 (2015). https://doi.org/10.1007/s12013-014-0317-6
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DOI: https://doi.org/10.1007/s12013-014-0317-6