PARP

PARP1/BRD4-IN-1 is a selective inhibitor targeting both PARP1 and BRD4, demonstrating IC50 values of 49 nM and 202 nM, respectively. This compound effectively represses the expression and activity of these proteins, leading to synergistic inhibition of malignant pancreatic cancer cell growth. PARP1/BRD4-IN-1 is a valuable tool for exploring therapeutic strategies in cancer research, particularly in the context of PARP and BRD4 signaling pathways.

PARP1/BRD4-IN-2 is a selective inhibitor of PARP1 and BRD4, demonstrating IC50 values of 197 nM and 238 nM, respectively. This compound effectively impedes DNA damage repair mechanisms, inhibits the G0/G1 cell cycle transition, and induces apoptotic cell death. PARP1/BRD4-IN-2 has shown significant anti-tumor efficacy in the MDA-MB-468 xenograft mouse model, making it a valuable tool for research in triple-negative breast cancer (TNBC).

PARP1-IN-14 is a potent inhibitor of PARP1, displaying an IC50 of 0.6 ± 0.1 nM. It demonstrates significant antiproliferative effects on MDA-MB-436 (BRCA1−/−) and Capan-1 (BRCA2−/−) cell lines, with IC50 values below 0.3 nM. This compound is valuable for cancer research, particularly in studies focused on DNA repair mechanisms and therapeutic strategies for BRCA-deficient tumors.

PARP1-IN-46 is a potent PARP-1 inhibitor with an IC50 of 2.4 nM, targeting the PARP-1 enzyme to modulate DNA damage response pathways. It exhibits significant anti-proliferative effects in both rat (C6) and human (U87MG) glioma cell lines by promoting PARP cleavage and inducing reactive oxygen species (ROS), ultimately leading to increased cell apoptosis. Additionally, PARP1-IN-46 effectively inhibits glioma cell migration, invasion, and colony formation, making it a valuable tool for research on glioma biology and potential therapeutic strategies.

PARP-2-IN-2 is a potent inhibitor of PARP-2, exhibiting an IC50 value of 0.057 μM. This compound effectively induces cell cycle arrest and apoptosis in MCF-7 breast cancer cells, highlighting its potential as a therapeutic agent in cancer research. PARP-2-IN-2 is valuable for investigations into cancer biology and therapeutic strategies targeting DNA repair mechanisms.

KU-0058948 hydrochloride is a highly selective inhibitor of PARP1, exhibiting an IC50 of 3.4 nM. It is demonstrated to induce cell cycle arrest and apoptosis in primary myeloid leukemic cells and various myeloid leukemic cell lines. This reagent is valuable for research into the mechanisms of leukemia and the therapeutic potential of PARP inhibition in hematological malignancies.

PARP1/NAMPT-IN-1 is a potent dual inhibitor of PARP1 and NAMPT, exhibiting IC50 values of 1.2 nM and 6.7 nM, respectively. This compound disrupts the homologous recombination repair pathway, leading to the accumulation of DNA double-strand breaks, which induces cell cycle arrest and apoptosis. Additionally, PARP1/NAMPT-IN-1 demonstrates antimigratory effects and has shown significant antitumor activity in a breast cancer xenograft model. It is a valuable tool for research on triple-negative breast cancer (TNBC).

PARP1/c-Met-IN-1 is a selective dual inhibitor targeting PARP1 and c-Met, demonstrating IC50 values of 3.3 nM and 32.2 nM, respectively. This compound effectively induces apoptosis and causes cell cycle arrest in the G2/M phase in MDA-MB-231 cells. Additionally, PARP1/c-Met-IN-1 has shown significant antitumor activity in murine models, making it a valuable tool for cancer research and therapeutic development.

PARP1-IN-10 is a potent inhibitor of PARP1, exhibiting an IC50 value of 50.62 nM in vitro without inducing cytotoxic effects. This compound induces cell cycle arrest at the G2/M phase and promotes apoptosis, thereby enhancing the cytotoxic efficacy of temozolomide (TMZ). PARP1-IN-10 is valuable for research in cancer biology and therapeutics, particularly in understanding the interplay between DNA repair mechanisms and chemotherapeutic sensitivity.

PARP1-IN-55 is a selective inhibitor of PARP1, demonstrating potent activity with an IC50 of 0.019 μM. It exhibits considerable anti-proliferative effects on MCF-7 breast cancer cells, with an IC50 of 3.6 μM. By inhibiting the PARP1-mediated DNA damage repair pathway, PARP1-IN-55 induces reactive oxygen species accumulation, disrupts mitochondrial membrane potential, and promotes apoptosis while inhibiting cancer cell migration, invasion, and colony formation. This compound serves as a valuable tool for investigating breast cancer biology and therapeutic strategies.

Polθ/PARP-IN-1 is a potent dual inhibitor targeting DNA polymerase theta (Polθ) and poly (ADP-ribose) polymerase (PARP), exhibiting IC50 values of 45.6 nM and 5.4 nM, respectively. This compound demonstrates significant antiproliferative activity by inducing apoptosis and cell cycle arrest at the G2/M phase, leading to DNA damage. Polθ/PARP-IN-1 is applicable in cancer research and may contribute to therapeutic strategies targeting tumorigenesis.

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.