Figure 6

GSIXII synergized with ABT-737 to trigger apoptosis in breast cancer cells. Breast cancer cell lines were incubated for 48 hours with 10 μM GSIXII or DMSO (Ct) in combination or not with ABT-737, 1 μM. Then apoptosis was evaluated with Apo2.7 or Annexin-V staining and flow-cytometry analysis. Represented data are the means of positive cells ± SEM, from three independent experiments. (A) Suboptimal concentrations of GSIXII (5 μM) and 1 μM ABT-737 were used alone or in combination in MFU assay in MCF7 and BT549 cell lines. Results were obtained from three independent experiments and compared with mock-treated condition. (B) The 20 μM SAHM1 was used alone or in combination in MFU assay in MCF7 and BT549 cell lines. Results were obtained from three independent experiments and compared with the mock-treated condition.