VIM and posterior cortical atrophy: The results of western blotting indicated that the overexpression of PCAT7 reduced the expression of E‐cadherin (epithelial marker), but upregulated the expression of vimentin and fibronectin (mesenchymal markers) in PC‐3 cells (Fig. 2I); conversely, PCAT7 knockdown enhanced E‐cadherin expression, but decreased vimentin and fibronectin expression in PCa cells (Fig. 2I).