Fig. 1

T-DM1 induced apoptosis and Caspase-3/7 activation in SK-BR-3 and BT-474 cells. a, b Cells were incubated with T-DM1 for 2Â days, and then examined by flow cytometry. Percentages of Annexin V/PI-positive cells were shown in bar charts. c Cells were cultured with different concentrations of T-DM1 for 2Â days and caspase-3/7 activation was analyzed by commercial kits. d SK-BR-3 cells (20Â ng/mL of T-DM1) and BT-474 cells (250Â ng/mL of T-DM1) were exposed to 20Â ÎĽM of Z-VAD-fmk for 2Â days and Caspase-3/7 activation of both two cells was detected