Aim To explore the expression of calcium-activated neutral protease-2(calpain-2) in hepatocarcinoma cell(HepG2),the effect on survival rate of HepG2 for evaluating potential value of calpain-2 as drug target.Methods Median lethal dose(LD50) of HepG2 treated with different dosage adriamycin(ADM) for 72 h was evaluated with tetrazolium salt colorimetric method(MTT).The expression and zymohydrolysis of calpain-2 and cyclin E in HepG2 treated with ADM with LD50 were detected with Western blot.The survival rates...