In support of these observations, reducing either β-catenin or AR expression using specific shRNA lentiviruses significantly attenuated androgen-induced AR-mediated transcriptional activity onset by E-cadherin knockdown in cells, providing evidence of a direct role of β-catenin in enhancing AR transcriptional activity in E-cadherin null prostate cancer cells (Fig 3I). This evidence concerns the gene AR and prostate carcinoma.