AKR1Cs-IN-1

AKR1Cs-IN-1 (Compound 29) is an effective and broad-spectrum inhibitor of the Aldo-Keto Reductase 1C family (AKR1C1-1C4) . It achieves subtype inhibition by simultaneously binding to the SP2 and SP3 pockets, thereby blocking metabolic pathways related to drug resistance. In enzyme assays, AKR1Cs-IN-1 exhibits significant inhibitory activity with IC50 values of 0.09, 0.28, 0.05, and 0.51 μM for AKR1C1, AKR1C2, AKR1C3, and AKR1C4, respectively. The compound shows excellent resensitizing effects in doxorubicin (DOX) -resistant breast cancer cell line MCF-7/ADR, effectively enhancing the cytotoxicity of DOX. AKR1Cs-IN-1 holds promise for research on breast cancer resistance.