Fig. 3

TGF-β1 promotes the expression of miR-9 and inhibits the expression of E-cadherin mRNA. After treatment with TGF-β1 (5 ng/ml) for 24 h, the expressions of miR-9 (a) and E-cadherin mRNA (b) in A549 cells were detected using qRT-PCR. Control cells without TGF-β1 treatment. *p < 0.01 vs. control