TTT-28 is a thiazole-valine peptidomimetic, and is a selective ABCB1 (P-gp/MDR1) inhibitor with high efficacy and low toxicity, which reverses the ATP-binding cassette sub-family B member 1 (ABCB1)-mediated Multidrug resistance (MDR) by selectively blocki
ML230 is a selective ATP-binding cassette (ABC) transporter ABCG2 inhibitor. It 36-fold selective for ABCG2 over ABCB1 (EC50s: 0.13 μM and 4.65 μM, respectively).
Becatecarin is a water-soluble, diethylaminoethyl analog of the antineoplastic antibiotic rebeccamycin. It intercalates into DNA, stabilizing the DNA-topoisomerase complex. This results in the potent catalytic inhibition of both topoisomerases I and II, initiating DNA cleavage and apoptosis. Becatecarin, alone or in combination with other compounds, has anti-cancer as well as myelosuppressive effects in vivo. It is also a transport substrate of the ATP-binding cassette (ABC) transporter ABCG2.