MDA-MB-231 cells co-transfected with β-catenin/TCF4/Smad3, β-catenin/TCF4, Smad3, or pcDNA control with (A) mutant Smad (mSmad) or (B) mutant TCF (mTCF) Gli2 promoter luciferase-reporter construct (normalized to Renilla and pGL3 luciferase values). n=3 biological replicates. Graphs represent mean + standard error of the mean, and p-values determined by 1-way ANOVA with Tukey Kramer analysis of means, where *p<0.05 and **p<0.01 versus pcDNA control.