(A) Cell viability of OVCAR8/ADR cells treated with free DOX, ctrl-MBM-DOXs of 1,200 nM, a-MBM-DOXs of 200 nM and 1,200 nM, and OVCAR8 treated with free DOX. The concentration of DOX is identical to be 10 μM. (B) Effect of a-MBM-DOXs on the sensitivity of OVCAR8/ADR cells to doxorubicin. OVCAR8 cells treated with free DOX (green), OVCAR8/ADR cells with free DOX (black) and a-MBM-DOXs of 1,200 nM (blue). Each point represents the average value from three independent experiments.