PARP

Signaling Pathway Map

Research Area

Inhibitory Selectivity

Isoform-specific Inhibitors

PARP Products

Catalog No. Information Product Use Citations Product Validations
S1060

Olaparib (AZD2281)

Olaparib (AZD2281, KU0059436) is a selective inhibitor of PARP1/2 with IC50 of 5 nM/1 nM in cell-free assays, 300-times less effective against tankyrase-1. Olaparib induces significant autophagy that is associated with mitophagy in cells with BRCA mutations.

S1004

Veliparib (ABT-888)

Veliparib (ABT-888, NSC 737664) is a potent inhibitor of PARP1 and PARP2 with Ki of 5.2 nM and 2.9 nM in cell-free assays, respectively. It is inactive to SIRT2. Veliparib increases autophagy and apoptosis. Phase 3.

S1180

XAV-939

XAV-939 (NVP-XAV939) selectively inhibits Wnt/β-catenin-mediated transcription through tankyrase1/2 inhibition with IC50 of 11 nM/4 nM in cell-free assays, regulates axin levels and does not affect CRE, NF-κB or TGF-β.

S1098

Rucaparib (AG-014699) phosphate

Rucaparib (AG-014699, PF-01367338) is an inhibitor of PARP with Ki of 1.4 nM for PARP1 in a cell-free assay, also showing binding affinity to eight other PARP domains. Phase 3.

S1087

Iniparib (BSI-201)

Iniparib (BSI-201, NSC-746045, IND-71677) is a PARP1 inhibitor with demonstrated effectiveness in triple-negative breast cancer (TNBC). Phase 3.

S8876New

RK-287107

RK-287107 is a novel, potent and selective tankyrase inhibitor with antitumor activity. RK-287107 inhibits tankyrase-1 and tankyrase-2 in vitro with IC50 of 14.3 nM and 10.6 nM.

S6739New

MN 64

MN-64 is a potent inhibitor of TNKS1 and TNKS2 with IC50 value of 6 and 72 nM, respectively.

S7048

Talazoparib (BMN 673)

Talazoparib (BMN 673) is a novel PARP inhibitor with IC50 of 0.57 nM for PARP1 in a cell-free assay. It is also a potent inhibitor of PARP-2, but does not inhibit PARG and is highly sensitive to PTEN mutation. Phase 3.

S2178

AG-14361

AG14361 is a potent inhibitor of PARP1 with Ki of <5 nM in a cell-free assay. It is at least 1000-fold more potent than the benzamides.

S1132

3-Aminobenzamide

3-Aminobenzamide (3-ABA , 3-Amino Benzamide, 3-AB) is a potent inhibitor of Poly(ADP-ribose)polymerase (PARP) and inhibits cell apoptosis after SCI (Spinal Cord Injury) in caspase-independent way.

S2197

A-966492

A-966492 is a novel and potent inhibitor of PARP1 and PARP2 with Ki of 1 nM and 1.5 nM, respectively.

S7300

PJ34 HCl

PJ34 HCl is the hydrochloride salt of PJ34, which is a PARP inhibitor with EC50 of 20 nM and is equally potent to PARP1/2.

S2741

Niraparib (MK-4827)

Niraparib (MK-4827) is a selective inhibitor of PARP1/2 with IC50 of 3.8 nM/2.1 nM, with great activity in cancer cells with mutant BRCA-1 and BRCA-2. It is >330-fold selective against PARP3, V-PARP and Tank1. Niraparib can form PARP–DNA complexes resulting in DNA damage, apoptosis, and cell death. Phase 3.

S8038

UPF 1069

UPF 1069 is a selective PARP2 inhibitor with IC50 of 0.3 μM. It is ~27-fold selective against PARP1.

S7029

AZD2461

AZD2461 is a novel PARP inhibitor with low affinity for Pgp than Olaparib. Phase 1.

S7438

ME0328

ME0328 is a potent and selective PARP inhibitor with IC50 of 0.89 μM for PARP3, about 7-fold selectivity over PARP1.

S8370

BGP-15 2HCl

BGP-15, is a nicotinic amidoxime derivative with PARP inhibitory activity. It has been demonstrated that BGP-15 protects against ischemia-reperfusion injury.

S7625

Niraparib (MK-4827) tosylate

Niraparib tosylate (MK-4827, ZEJULA) is a selective inhibitor of PARP1/PARP2 with IC50 of 3.8 nM/2.1 nM. Niraparib increases formation of PARP-DNA complexes resulting in DNA damage, apoptosis, and cell death.

S7730

NU1025

NU1025 is a potent PARP inhibitor with IC50 of 400 nM.

S8592

Pamiparib (BGB-290)

Pamiparib (BGB-290) is a potent and selective inhibitor of PARP1 and PARP2 with IC50 values of 0.83 and 0.11 nM, respectively in biochemical assays. It shows high selectivity over other PARP enzymes.

S7239

G007-LK

G007-LK is a potent and selective tankyrase inhibitor with IC50 of 46 nM and 25 nM for TNKS1/2, respectively.

S7238

NVP-TNKS656

NVP-TNKS656 is a highly potent, selective, and orally active tankyrase inhibitor with IC50 of 6 nM for TNKS2, > 300-fold selectivity against PARP1 and PARP2.

S8419

E7449

E7449 is an orally bioavailable, brain penetrable, small molecule dual inhibitor of PARP1/2 and also inhibits PARP5a/5b, otherwise known as tankyrase1 and 2 (TNKS1/2), important regulators of canonical Wnt/β-catenin signaling. It has IC50 values of 1.0 and 1.2 nM for PARP1 and 2, respectively.

S9360

4-Hydroxyquinazoline

4-Hydroxyquinazoline (Quinazolin-4-ol, 4-Quinazolinol) is a PARP inhibitor with a high potency for PARP-1 with IC50 of 9.5 μM.

S8363

NMS-P118

NMS-P118 is a potent, orally available, and highly selective PARP-1 inhibitor endowed with excellent ADME and pharmacokinetic profiles, showing 150-fold selectivity for PARP-1 over PARP-2 (Kd 0.009 μM vs 1.39 μM, respectively).

S4715

Benzamide

Benzamide, a derivative of benzoic acid, is an inhibitor of poly(ADP-ribose) polymerase with an IC50 of 3.3 μM.

S4710

Picolinamide

Picolinamide is found to be a strong inhibitor of poly (ADP-ribose) synthetase of nuclei from rat pancreatic islet cells.

S2271

Berberine chloride

Berberine chloride is a quaternary ammonium salt from the group of isoquinoline alkaloids. Berberine activates caspase 3 and caspase 8, cleavage of poly ADP-ribose polymerase (PARP) and the release of cytochrome c. Berberine chloride decreases the expression of c-IAP1, Bcl-2 and Bcl-XL. Berberine chloride induces apoptosis with sustained phosphorylation of JNK and p38 MAPK, as well as generation of the ROS. Berberine chloride is a dual topoisomerase I and II inhibitor. Berberine chloride is also a potential autophagy modulator.

Catalog No. Information Product Use Citations Product Validations
S1060

Olaparib (AZD2281)

Olaparib (AZD2281, KU0059436) is a selective inhibitor of PARP1/2 with IC50 of 5 nM/1 nM in cell-free assays, 300-times less effective against tankyrase-1. Olaparib induces significant autophagy that is associated with mitophagy in cells with BRCA mutations.

S1004

Veliparib (ABT-888)

Veliparib (ABT-888, NSC 737664) is a potent inhibitor of PARP1 and PARP2 with Ki of 5.2 nM and 2.9 nM in cell-free assays, respectively. It is inactive to SIRT2. Veliparib increases autophagy and apoptosis. Phase 3.

S1180

XAV-939

XAV-939 (NVP-XAV939) selectively inhibits Wnt/β-catenin-mediated transcription through tankyrase1/2 inhibition with IC50 of 11 nM/4 nM in cell-free assays, regulates axin levels and does not affect CRE, NF-κB or TGF-β.

S1098

Rucaparib (AG-014699) phosphate

Rucaparib (AG-014699, PF-01367338) is an inhibitor of PARP with Ki of 1.4 nM for PARP1 in a cell-free assay, also showing binding affinity to eight other PARP domains. Phase 3.

S1087

Iniparib (BSI-201)

Iniparib (BSI-201, NSC-746045, IND-71677) is a PARP1 inhibitor with demonstrated effectiveness in triple-negative breast cancer (TNBC). Phase 3.

S8876New

RK-287107

RK-287107 is a novel, potent and selective tankyrase inhibitor with antitumor activity. RK-287107 inhibits tankyrase-1 and tankyrase-2 in vitro with IC50 of 14.3 nM and 10.6 nM.

S6739New

MN 64

MN-64 is a potent inhibitor of TNKS1 and TNKS2 with IC50 value of 6 and 72 nM, respectively.

S7048

Talazoparib (BMN 673)

Talazoparib (BMN 673) is a novel PARP inhibitor with IC50 of 0.57 nM for PARP1 in a cell-free assay. It is also a potent inhibitor of PARP-2, but does not inhibit PARG and is highly sensitive to PTEN mutation. Phase 3.

S2178

AG-14361

AG14361 is a potent inhibitor of PARP1 with Ki of <5 nM in a cell-free assay. It is at least 1000-fold more potent than the benzamides.

S1132

3-Aminobenzamide

3-Aminobenzamide (3-ABA , 3-Amino Benzamide, 3-AB) is a potent inhibitor of Poly(ADP-ribose)polymerase (PARP) and inhibits cell apoptosis after SCI (Spinal Cord Injury) in caspase-independent way.

S2197

A-966492

A-966492 is a novel and potent inhibitor of PARP1 and PARP2 with Ki of 1 nM and 1.5 nM, respectively.

S7300

PJ34 HCl

PJ34 HCl is the hydrochloride salt of PJ34, which is a PARP inhibitor with EC50 of 20 nM and is equally potent to PARP1/2.

S2741

Niraparib (MK-4827)

Niraparib (MK-4827) is a selective inhibitor of PARP1/2 with IC50 of 3.8 nM/2.1 nM, with great activity in cancer cells with mutant BRCA-1 and BRCA-2. It is >330-fold selective against PARP3, V-PARP and Tank1. Niraparib can form PARP–DNA complexes resulting in DNA damage, apoptosis, and cell death. Phase 3.

S8038

UPF 1069

UPF 1069 is a selective PARP2 inhibitor with IC50 of 0.3 μM. It is ~27-fold selective against PARP1.

S7029

AZD2461

AZD2461 is a novel PARP inhibitor with low affinity for Pgp than Olaparib. Phase 1.

S7438

ME0328

ME0328 is a potent and selective PARP inhibitor with IC50 of 0.89 μM for PARP3, about 7-fold selectivity over PARP1.

S8370

BGP-15 2HCl

BGP-15, is a nicotinic amidoxime derivative with PARP inhibitory activity. It has been demonstrated that BGP-15 protects against ischemia-reperfusion injury.

S7625

Niraparib (MK-4827) tosylate

Niraparib tosylate (MK-4827, ZEJULA) is a selective inhibitor of PARP1/PARP2 with IC50 of 3.8 nM/2.1 nM. Niraparib increases formation of PARP-DNA complexes resulting in DNA damage, apoptosis, and cell death.

S7730

NU1025

NU1025 is a potent PARP inhibitor with IC50 of 400 nM.

S8592

Pamiparib (BGB-290)

Pamiparib (BGB-290) is a potent and selective inhibitor of PARP1 and PARP2 with IC50 values of 0.83 and 0.11 nM, respectively in biochemical assays. It shows high selectivity over other PARP enzymes.

S7239

G007-LK

G007-LK is a potent and selective tankyrase inhibitor with IC50 of 46 nM and 25 nM for TNKS1/2, respectively.

S7238

NVP-TNKS656

NVP-TNKS656 is a highly potent, selective, and orally active tankyrase inhibitor with IC50 of 6 nM for TNKS2, > 300-fold selectivity against PARP1 and PARP2.

S8419

E7449

E7449 is an orally bioavailable, brain penetrable, small molecule dual inhibitor of PARP1/2 and also inhibits PARP5a/5b, otherwise known as tankyrase1 and 2 (TNKS1/2), important regulators of canonical Wnt/β-catenin signaling. It has IC50 values of 1.0 and 1.2 nM for PARP1 and 2, respectively.

S9360

4-Hydroxyquinazoline

4-Hydroxyquinazoline (Quinazolin-4-ol, 4-Quinazolinol) is a PARP inhibitor with a high potency for PARP-1 with IC50 of 9.5 μM.

S8363

NMS-P118

NMS-P118 is a potent, orally available, and highly selective PARP-1 inhibitor endowed with excellent ADME and pharmacokinetic profiles, showing 150-fold selectivity for PARP-1 over PARP-2 (Kd 0.009 μM vs 1.39 μM, respectively).

S4715

Benzamide

Benzamide, a derivative of benzoic acid, is an inhibitor of poly(ADP-ribose) polymerase with an IC50 of 3.3 μM.

S4710

Picolinamide

Picolinamide is found to be a strong inhibitor of poly (ADP-ribose) synthetase of nuclei from rat pancreatic islet cells.

Catalog No. Information Product Use Citations Product Validations
S2271

Berberine chloride

Berberine chloride is a quaternary ammonium salt from the group of isoquinoline alkaloids. Berberine activates caspase 3 and caspase 8, cleavage of poly ADP-ribose polymerase (PARP) and the release of cytochrome c. Berberine chloride decreases the expression of c-IAP1, Bcl-2 and Bcl-XL. Berberine chloride induces apoptosis with sustained phosphorylation of JNK and p38 MAPK, as well as generation of the ROS. Berberine chloride is a dual topoisomerase I and II inhibitor. Berberine chloride is also a potential autophagy modulator.

Tags: PARP inhibition | PARP cancer | PARP inhibitor cancer | PARP signaling | PARP activity | PARP assay | PARP activity | PARP inhibitor trial | PARP activation | PARP inhibitors clinical trials | FDA approval PARP inhibitor | PARP inhibitor drugs | PARP phosphorylation | PARP inhibitor review