AY-4

AY-4 (Compound AY-4) is a potent PROTAC degrader targeting FTH1, with a dissociation constant (Kd) of 3.17 nM. It effectively increases intracellular ferrous (Fe2+) and ferric (Fe3+) ion levels. AY-4 is a potential anticancer candidate that regulates iron homeostasis through ferritin degradation, enhancing the efficacy of existing drugs. Additionally, AY-4 significantly reduces FTH1 levels in breast cancer cells.