Cell apoptosis in MM cells treated by different concentrations of GANT61. Cell apoptosis rate after treated by various concentrations (0, 2.5, 5, 10 μmol/L) of GANT61 at 24 h in RPMI-8226 cells (a, b). Expressions of C-Caspase 3, Bcl-2, Bax and Survivin after treated by various concentrations (0, 2.5, 5, 10 μmol/L) of GANT61 at 24 h in RPMI-8226 cells (c, d). Cell apoptosis rate after treated by various concentrations (0, 2.5, 5, 10 μmol/L) of GANT61 at 24 h in U266 cells (e, f). Expressions of C-Caspase 3, Bcl-2, Bax and Survivin after treated by various concentrations (0, 2.5, 5, 10 μmol/L) of GANT61 at 24 h in U266 cells (g, h). Comparison between two groups was determined by t-test. P value < 0.05 was considered significant. *P < 0.05; **P < 0.01; ***P < 0.001. MM, multiple myeloma; C-Caspase 3, Cleaved Caspase 3; Bcl-2, B-cell lymphoma-2.