Figure 10. OPN isoform stable cells express different levels of WNT signaling- and EMT-related proteins.
A. Western blot analysis revealed increased E-cadherin expression in OPNa-, OPNb-, OPNib- and OPNic-expressing cells but decreased expression in OPNc-and OPNia-expressing cells as compared to LacZ controls. Vimentin expression was increased in both OPNb- and OPNib-expressing cells but decreased in OPNa-, OPNia-, OPNc-, and OPNic-expressing cells. B. Elevated β-catenin expression was observed in OPNa-, OPNb- and OPNc-expressing cells. Addition of cilengitide did not alter β-catenin expression in any of the OPN isoform-expressing cells but induced E-cadherin expression in OPNc-expressing cells. GAPDH or β-actin was included as a loading control.