PDD00017272 is an inhibitor of poly(ADP-ribose) glycohydrolase (PARG) ( EC 50 =4.8 nM) and an activator of PARP1/2 . PDD00017272 inhibits its activity of hydrolyzing poly(ADP-ribose) (pADPr), resulting in the accumulation of pADPr on chromatin, interfering with DNA damage repair and replication processes, and inducing PARP1/2 -dependent cytotoxicity. PDD00017272 can be used in cancer models with DNA repair defects (such as BRCA mutations) or resistance to PARP inhibitors. PDD00017272 has a PARG expression level-correlated inhibitory potency with EC 50 of 9.2 nM (PARG cells), the tumor cells with lower PARG expression are more sensitive .
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