SLC4A4 and posterior cortical atrophy: Compared with the shCtrl group, the percentage of apoptotic cells in shSLC4A4 group was increased by 2.9-fold in DU 145 cells and 9.4-fold in LNCaP cells (P < 0.001; Fig. 3A, B), implying that SLC4A4 knockdown facilitated apoptosis among PCa cells.