Compound C blocks p53 phosphorylation, Bax induction, and caspase 3 activation induced by cisplatin in tubular epithelial cells. A: representative Western blots showing phosphorylated (p-)p53, p53, Bax, cleaved caspase 3, and GAPDH in tubular epithelial cells. B: quantitative analysis of p-p53/p53 in tubular epithelial cells. **P < 0.01. C: quantitative analysis of Bax expression in tubular epithelial cells. **P < 0.01. D: quantitative analysis of cleaved caspase 3 in tubular epithelial cells. **P < 0.01.