A549 cells expressing control shRNA, WDR63 shRNA#1, Arp2 shRNA, or both WDR63 and Arp2 shRNA Lysates from these cells were also analyzed by western blot (B). Data shown are mean ± SD (n=3). *, P ˂ 0.05; ***, P ˂ 0.001; N.S., no significance 