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AZD7762 is a potent ATP-competitive checkpoint kinase inhibitor with an IC50 of 5 and <10 nM for CHK1 and CHK2 respectively.AZD7762 has been profiled extensively in vitro andin vivo in combination with DNA-damaging agents and has been shown to potentiate response in several different settings where inhibition of checkpoint kinase results in the abrogation of DNA damage-induced cell cycle arrest.
Sci Rep. 2017 Nov 14;7(1):15511.
Targeting a non-oncogene addiction to the ATR/CHK1 axis for the treatment of small cell lung cancer
AZD7762 purchased from AbMole
Cell Experiment | |
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Cell lines | H29 cells |
Preparation method | Checkpoint Abrogation Assay HT29 cells (3 × 105) were seeded in 96-well plates and incubated overnight. Cells were treated for 2 h with camptothecin (topoisomerase I inhibitor; 0.07 μg/mL) to induce the G2 checkpoint. Cells were then treated for 20 h with vehicle (0.5% DMSO) or caffeine (4 mmol/L; positive control) plus nocodazole (1 μg/mL) or a 12-point titration of AZD7762 (12.5 μmol/L to 6 nmol/L) plus nocodazole. Nocodazole alone-treated cells with no camptothecin pretreatment were used to determine the maximum mitotic index. Cells were fixed with 3.7% formaldehyde for 1 h, permeabilized with PBS containing 0.05% Triton X, and incubated with anti-phH3 antibody for 1 h followed by Alexa Fluor 488 anti-rabbit (Molecular Probes) and Hoechst stain for 1 h. Mitotic index was determined on the ArrayScan and expressed as the percentage of cells undergoing mitosis. The EC50 was calculated by concentration-response curve fitting using three-variable logistical equations within XLfit (model 205) with the curve bottom constrained to 0 and the top constrained to 100 by nocodazole alone treatment. |
Concentrations | 6nM~12.5μM |
Incubation time | 20 h |
Animal Experiment | |
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Animal models | athymic mice bearing established H460-DNp53 or SW620 tumors and rnu rats bearing established H460-DNp53 tumors |
Formulation | formulated in 11.3% hydroxyproplyl-β-cyclodextrin |
Dosages | 25mg/kg(mouse) and 10 or 20mg/kg (rat) |
Administration | i.v. injection via the tail vein |
Molecular Weight | 362.42 |
Formula | C17H19FN4O2S |
CAS Number | 860352-01-8 |
Solubility (25°C) | DMSO 50 mg/mL |
Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
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