Saruparib (AZD5305) is a potent, orally active and selective PARP inhibitor and trapper with IC50 values of 3 nM and 1400 nM for PARP1 and PARP2, respectively. Saruparib has anti-proliferative activity and inhibits growth in cells with deficiencies in DNA repair[2].In Vitro:Saruparib (AZD5305) (0.1 nM-100 μM) inhibits PARylation in A549 WT cells by selectively blocking PARP1 enzymatic activity with an IC50 value of 2.3 nM.
AZD5305 (0.1 nM-100 μM; A549 WT cells) is a potent and selective trapper of PARP1 in a dose-dependent manner by single digit nanomolar concentrations.
AZD5305 (0.1 nM-100 μM; 48 h; DLD1 WT and DLD1 BRCA2-/-) has anti-proliferative activity and targets cancer cells with HRR-deficiency, inducing DNA damage accumulation and cell-cycle arrest.
In Vivo:Saruparib (AZD5305) (0.01-0.3 mg/kg; p.o.; daily, for 35 d; female Han Wistar rats) demonstrates sustained antitumor activity in BRCAm xenograft and PDX models in vivo.