Biochem/physiol Actions
AG14361 is a potent oly(ADP-ribose) polymerase-1 inhibitor (human PARP-1 Ki = 5.8 nM) that suppresses 25 μM MNNG-induced PARP-1 activity (NAD+ depletion = 70% without vs.12% with 0.4 μM AG14361; 87% reduced ADP-ribose polymer induction with 0.4 μM AG14361) and greatly amplifies temozolomide and topotecan cytotoxicity (2.2- and 2.0-fold lower IG50, respectively, with 0.4 μM AG14361) in A549 cultures. AG14361 is shown to selectively kill BRCA2-deficient cells over BRCA2-expressing cells both in cultures (1-10 μM) and in mice in vivo (25 mg/10 mL/kg/d ip).
Potent poly(ADP-ribose) polymerase-1 (PARP-1) inhibitor in vitro and in vivo.