PARP

PARP7-IN-16 free base is a selective, orally active inhibitor of PARP-1, PARP-2, and PARP-7, exhibiting IC50 values of 0.94 nM, 0.87 nM, and 0.21 nM, respectively. This compound is valuable for investigating the role of PARP enzymes in DNA repair mechanisms and is particularly relevant in studies focused on breast and prostate cancer. Researchers can utilize PARP7-IN-16 free base to explore therapeutic strategies targeting these types of malignancies.

PARP1-IN-11 is a selective inhibitor of the poly(ADP-ribose) polymerase 1 (PARP1) enzyme, demonstrating a potent inhibitory activity with an IC50 value of 0.082 µM. This compound exhibits complete inhibition of PARP2 and significantly inhibits the activity of PARP3, as well as tankyrases TNKS1 and TNKS2. PARP1-IN-11 is valuable for research applications focused on DNA repair mechanisms, cancer therapeutics, and the study of cellular responses to genotoxic stress.

PARP1-IN-33 is a potent inhibitor of PARP1, exhibiting an IC50 of 0.41 nM. This compound demonstrates significant cytoprotective effects on retinal cells, with an EC50 of 0.02 nM in inhibiting MTS activity in H2O2-induced human retinal pigment epithelial cells. PARP1-IN-33 is valuable for research applications aimed at understanding retinal oxidative stress and developing therapeutic strategies for retinal diseases.

A-620223 is a potent inhibitor of PARP-1, exhibiting a Ki of 8 nM and an EC50 of 3 nM in whole cell assays. This compound demonstrates significant in vivo efficacy in murine models, particularly in the B16F10 melanoma model when used in combination with Temozolomide and in the MX-1 breast xenograft model with Cisplatin. A-620223 is suitable for research applications focusing on melanoma and breast cancer therapy.

Saruparib is a potent and selective PARP inhibitor, primarily targeting PARP1 with an IC50 value of 3 nM and PARP2 with an IC50 of 1400 nM. This orally active compound demonstrates significant anti-proliferative effects and is particularly effective in inhibiting the growth of cells exhibiting deficiencies in DNA repair mechanisms. Saruparib is commonly utilized in research focused on cancer treatment strategies, particularly in the context of homologous recombination repair-deficient tumors.

Fluzoparib is a highly potent oral inhibitor of PARP1, demonstrating an IC50 of 1.46 ± 0.72 nM in cell-free enzymatic assays. This compound selectively targets homologous recombination repair (HR)-deficient cells while sensitizing both HR-deficient and HR-proficient cells to cytotoxic agents. With favorable pharmacokinetic properties in vivo, Fluzoparib is an important reagent for studying BRCA1/2-mutant relapsed ovarian cancer and related therapeutic strategies.

RBN012759 is a potent and selective inhibitor of PARP14, exhibiting an IC50 of less than 3 nM. It demonstrates 300-fold selectivity for monoPARPs and 1000-fold selectivity for polyPARPs. RBN012759 has been shown to diminish pro-tumor macrophage activity and trigger inflammatory responses in tumor explants, making it a valuable tool for research in cancer biology and immune modulation.

Basroparib is a selective inhibitor of tankyrase (TNKS1/TNKS2) with IC50 values of 29.94 nM and 3.68 nM, respectively, and exhibits limited activity against PARP1 (IC50 > 10 μM). This compound stabilizes AXIN1/2 proteins and effectively disrupts the Wnt/β-catenin signaling pathway, leading to inhibition of tumor cell proliferation and induction of apoptosis. Basroparib is particularly relevant for research in colorectal cancer (CRC) models bearing KRAS mutations, such as G12V/G12D, and demonstrates potential to overcome resistance to MEK inhibitors, providing synergistic antitumor effects.

Benzamide is a potent inhibitor of poly(ADP-ribose) polymerase (PARP), demonstrating significant neuroprotective effects. It has been shown to protect against neurotoxicity induced by glutamate and methamphetamine in vitro. In vivo studies indicate that Benzamide can mitigate methamphetamine-induced dopamine depletions in mice without acute effects on striatal dopamine metabolism or body temperature regulation. Its dual role in neuroprotection and PARP inhibition makes it a valuable tool in neuropharmacology research.

OUL232 is a potent inhibitor of poly(ADP-ribose) polymerase 10 (PARP10) and other mono-ADP-ribosyl transferases including PARP7, PARP11, PARP12, PARP14, and PARP15. With an IC50 of 7.8 nM, OUL232 represents the most effective PARP10 inhibitor characterized to date and is the first reported inhibitor targeting PARP12. This compound is valuable for studying the biological roles of PARP10 and PARP12 in cellular processes and may facilitate research into therapeutic strategies involving these targets.

PARP/EZH2-IN-1 is a potent dual inhibitor targeting PARP and EZH2, with respective IC50 values of 6.87 nM and 36.51 nM. This reagent demonstrates significant biological activity in the treatment of triple-negative breast cancer, particularly in cells with wild-type BRCA. Its unique mechanism of action makes it a valuable tool for research into cancer biology and therapeutic development.

Palacaparib is a potent inhibitor of PARP1, demonstrating over 8000-fold selectivity for PARP1 relative to PARP2, PARP3, PARP5a, and PARP6. It functions by selectively inhibiting PARP1 and trapping it at sites of single-strand breaks (SSBs), impeding DNA repair. This compound is investigated primarily for its anti-cancer properties, particularly in research related to HRD+ breast cancer and various advanced solid tumors.

PARP-1-IN-32 is a potent inhibitor of poly(ADP-ribose) polymerase-1 (PARP-1). This compound is utilized in cancer research to investigate the mechanisms of DNA repair and cellular response to genotoxic stress. Its ability to selectively inhibit PARP-1 makes it a valuable tool for studying the role of this enzyme in tumor biology and therapeutic resistance.

L-2286 is a potent orally active inhibitor of PARP-1. This compound demonstrates significant biological activity by alleviating carotid artery remodeling, reducing oxidative stress and inflammation in spontaneously hypertensive rats, while also providing neuroprotective effects in the dorsal hippocampus. L-2286 is applicable in research focused on hypertension and its associated vascular and neurological complications.