Effects of p53 activator doxorubicin on hepatic bile acid disposition‐related gene expression in cholic acid‐fed Trp53‐WT mice. With the same treatment strategy, mice were killed 24 h after the final doxorubicin treatment, and liver tissues were collected. mRNA and protein were measured by qRT‐PCR and Western blot analysis respectively. (A–H) mRNA expression of Cdkn1a, Cyp7a1, Cyp3a11, Cyp2b10, Sult2a1, Abcc2, Abcc3 and Abcc4. (I) Western blots of p21, CYP7A1, CYP3A11, CYP2B10, SULT2A1, MRP2, MRP3, MRP4 and GAPDH, and (J, K) the corresponding protein levels quantified relative to GAPDH. Data are the mean ± SEM (n = 5–6). *P < 0.05.