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DC_AC50 is an inhibitor of the copper-trafficking proteins Atox1 and CCS.1 It binds to purified Atox1 and CCS (Kds = 6.8 and 8.2 μM, respectively) and inhibits the interaction between Atox1 and domain 4 of the Cu+-ATPase ATP7B in the presence of zinc in a FRET-based assay when used at a concentration of 100 μM. DC_AC50 increases copper and reactive oxygen species (ROS) levels and decreases COX activity and lipid biosynthesis in H1299 cells when used at a concentration of 10 μM. It inhibits the proliferation of H1299, K562, MDA-MB-231, and 212LN cancer cells, but not PIG1, HDF, HaCaT, or MCF-10A cells, in a concentration-dependent manner. DC_AC50 (100 mg/kg per day) reduces tumor growth in an H1299 mouse xenograft model.
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1. Inhibition of human copper trafficking by a small molecule significantly attenuates cancer cell proliferation. Nat. Chem. 7(12), 968-979 (2015).