Chemical Properties
orange amorphous powder
Uses
The poly(ADP-ribose) polymerases (PARPs) form a family of enzymes with roles in DNA repair and apoptosis, particularly in response to reactive oxygen and nitrogen species. 4-amino-1,8-Naphthalimide (4-ANI) is an inhibitor of PARP (IC50 = 180 nM). It blocks radiation-induced PARP in cancer cells, potentiating the cytotoxicity of γ-radiation, although it is not cytotoxic in the absence of radiation. 4-ANI is used to study the role of PARP activity in various cell systems.
Description
The poly(ADP-ribose) polymerases (PARPs) form a family of enzymes with roles in DNA repair and apoptosis, particularly in response to reactive oxygen and nitrogen species. 4-amino-1,8-Naphthalimide (4-ANI) is an inhibitor of PARP (IC50 = 180 nM). It blocks radiation-induced PARP in cancer cells, potentiating the cytotoxicity of γ-radiation, although it is not cytotoxic in the absence of radiation. 4-ANI is used to study the role of PARP activity in various cell systems.
Definition
ChEBI: 4-amino-1,8-naphthalimide is a benzoisoquinoline and a dicarboximide.
Biochem/physiol Actions
4-Amino-1,8-naphthalimide sensitizes cells to radiation-induced cell damage and enhances the cytotoxicity of 1-methyl-3-nitro-1-nitrosoguanidine.
Enzyme inhibitor
This PARP inhibitor (FW = 212.21 g/mol) is a strong inhibitor of NAD:ADP-ribosyltransferase or poly(ADP-ribose) polymerase (IC50 = 0.18 μM). In addition, 4-Amino-1,8-naphthalimide is a radiation sensitizer at non-toxic and low concentrations.
References
[1]. schlicker a, peschke p, bürkle a, et al. 4-amino-1,8-naphthalimide: a novel inhibitor of poly(adp-ribose) polymerase and radiation sensitizer. int j radiat biol. 1999 jan;75(1):91-100.
[2]. davar d1, beumer jh, hamieh l, et al. role of parp inhibitors in cancer biology and therapy. curr med chem. 2012;19(23):3907-21.
[3]. banasik m, komura h, shimoyama m,et al. specific inhibitors of poly(adp-ribose) synthetase and mono(adp-ribosyl)transferase. j biol chem. 1992 jan 25;267(3):1569-75.
[4]. issaeva n, thomas hd, djureinovic t, et al. 6-thioguanine selectively kills brca2-defective tumors and overcomes parp inhibitor resistance. cancer res. 2010 aug 1;70(15):6268-76.
