CDK16 knockdown leads to p53 accumulation. A. A549 cells were transfected with indicated siRNAs for 48 h, and samples were collected and analyzed by Western blotting with the indicated antibodies. The ratio shows relative p53 protein expression normalized for GAPDH (scramble, set at 1). B. A549 cells infected with lenti-CRISPR sgRNAs targeting CDK16 or control were incubated with puromycin for one week, and endogenous CDK16 and p53 were analyzed by western blotting. C. A549 and H292 cells were transfected with constructs encoding SFB-CDK16. Cells were collected 24 h later and cell lysates were analyzed by Western blotting using indicated antibodies. D. H292, U2OS, and MCF-7 cells were transfected with indicated siRNAs for 48 h, and analyzed as described in (A). E. A549 and H292 cells were transfected with scrambled or CDK16 siRNAs for 48 h. The mRNA levels for the indicated genes were determined by Real-time quantitative PCR (n=3). F. HCC827 and H1975 cells were transfected with scrambled or CDK16 siRNAs as indicated for 48 h and analyzed as described in (A).