Table 3. The effect of IPI-549 on the resistance fold of MDR ABCG2-overexpressing cells.
Drug | S1 IC50 ± SD (μM) | RFa | S1-M1–80 IC50 ± SD (μM) | RFa |
---|---|---|---|---|
Mitoxantrone | 0.0089 ± 0.001 | 1.0 | 9.1993 ± 0.027 | 1032.8 |
+IPI-549 2.5 μM | 0.0073 ± 0.015 | 1.0 | 6.1125 ± 0.002 | 686.2 |
+IPI-549 5 μM | 0.0084 ± 0.075 | 1.0 | 5.0815 ± 0.029 | 570.4 |
+Nilotinib 5 μM | 0.0073 ± 0.007 | 1.0 | 0.0830 ± 0.005 | 9.32* |
IC50 values are represented as a mean ± SD of three independent experiments performed in triplicate.
Resistance fold (RF) was the IC50 values of the S1-M1–80 cells with and without IPI- 549 or verapamil divided by the IC50 value of S1 cells without reversing agents.
P < 0.01 versus the control group.