Figure 9. The Hippo pathway is actively involved in the interaction between YAP and FGFR signaling pathway in the FTSECs.
a) FGF2 suppresses the phosphorylation of the major components of the Hippo/YAP signaling pathways in FT194 cells. The total and phosphorylated proteins were determined by Western blot. b) Western blot analysis indicates that knockdown of LATS1/2 in FT194 cells using LATS1/2 specific siRNA activates YAP, AKT (S473) and ERK1/2. c) RT-PCR results showing that knockdown of LATS1/2 in FT194 cells induces expression of FGF1, FGF2, FGFR1, and FGFR4. d) Blockage of YAP and FGFR using verteporfin and BGJ398 inhibited FT194 cell proliferation induced by LATS1/2 knockdown. Each box represents Mean ± SEM of 4 independent experiments. Boxes with different letters are significantly different from each other. e) Blockage of YAP and FGFR using verteporfin and BGJ398 inhibited FT194 cell migration induced by LATS1/2 knockdown. BGJ: BGJ398 (1μM); VTPF: verteporfin (5μm). Scale bar=200μm.