Effect of chidamide or combined with icotinib on E-cadherin and β-catenin expression in NSCLC cells. A, expression level of E-cadherin protein in 10 NSCLC cell lines; B, relative expression level of E-cadherin mRNA in 10 NSCLC cell lines (relative to GAPDH); C-F, expression of E-cadherin and β-catenin protein in HCC827, HCC827IR, A549 and H1975 cells after treatment of serial dilutions of chidamide (48h); G, expression of E-cadherin mRNA in H1975 cells after treatment of serial dilutions of chidamide (24h); H, expression of E-cadherin and β-catenin protein in H1975 cells after treatment of chidamide or combined with icotinib (48h). Experiment was repeated at least thrice. Control: DMSO.