ABCB1 and neuroblastoma: LP117 (2μM) also sensitized the vincristine-resistant ABCB1-expressing neuroblastoma cell lines IMR-32rVCR10 and UKF-NB-2rVCR10, the ABCB1-expressing neuroblastoma cell line UKF-NB-4 that was isolated as multi-drug resistant cell line from a patient [19,20,22], the ABCB1-expressing doxorubicin-resistant UKF-NB-3 sub-line UKF-NB-3rDOX20, and the ABCB1-expressing paclitaxel-resistant UKF-NB-3 sub-line UKF-NB-3rPCL10 to vincristine (Figure 3B, Suppl.