PDGF-BB affects YAP dephosphorylation, subcellular localization and downstream gene expression. (A) Western blot analysis of YAP, MST1/2 and LATS1 expression and their phosphorylation levels in BxPC-3 cells exposed to 100 ng/ml PDGF-BB or PBS. (B) Immunofluorescence staining exhibiting the subcellular localization of YAP protein after treatment of BxPC-3 cells with 100 ng/ml PDGF-BB for 24 h. (C) BxPC-3 cells were transfected with the 8×GTIIC-luc reporter and Renilla-luc plasmids and cultured under increasing concentrations of PDGF-BB (0–100 ng/ml) for 24 h. Relative firefly/Renilla luciferase activity was measured. (D) Reverse transcription-quantitative PCR analysis of the expression levels of YAP target genes (MYC and MCL-1) in BxPC-3 cells treated with PDGF-BB (0–100 ng/ml) or PBS. Relative mRNA levels were normalized to GAPDH. (E) Western blot analysis of E-cadherin and N-cadherin expression in BxPC-3 cells after PDGF-BB treatment. (F) mRNA levels of E-cadherin and N-cadherin relative to GAPDH in the mock and PDGF groups. Data are presented as the mean ± SD (n=3). *P<0.05 and **P<0.01 vs. mock or 0 ng/ml. PDGF-BB, platelet-derived growth factor-BB; YAP, Yes-associated protein; p, phosphorylated; MST1, Macrophage Stimulating 1; LATS1, Large Tumor Suppressor Kinase 1.