4.1. Materials

Resveratrol was purchased from Shanghai Standardization for the Traditional Research Center and dissolved in dimethyl sulfoxide (DMSO). Human TGF-beta1 was obtained from PeproTech (USA). 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (MTS) was purchased from Promega (Madison, WI, USA). QuicBlock^TM Blocking Buffer for Immunol Staining, Antifade Mounting Medium with DAPI, QuicBlock^TM Secondary Antibody Dilution Buffer for Immunofluorescence and QuicBlock^TM Primary Antibody Dilution Buffer for Immunol Staining were purchased from Beyotime (Shanghai, China). Antibodies against MMP-2, MMP-9, α-SMA, Smad2, Smad3, P-Smad2, P-Smad3, Snail1, and Slug were obtained from Santa Cruz Biotechnology (Santa Cruz, CA, USA). Fibronectin, P-PI3K, PI3K, P-AKT, AKT, E-cadherin, and vimentin antibodies were purchased from Cell Signaling Technology (Boston, MA, USA). {"type":"entrez-nucleotide","attrs":{"text":"LY290042","term_id":"1257839980","term_text":"LY290042"}}LY290042, SB431542, SP600125, PDTC, and PD98059 were purchased from Selleck Chemical (Houston, TX, USA). PDTC and PD98059 were purchased from MedChemExpresss (New Jersey, NJ, USA). IRDye^TM fluorescence antibodies were obtained from Li-Cor Bioscience (Lincoln, NE, USA).