Molecular Weight(MW): 420.50
AZ31 is a selective and novel ATM inhibitor with an IC50 of <0.0012 μM. It shows excellent selectivity over closely related enzymes (>500 fold selective over DNA-PK and PI3Kα and >1000 fold selective over mTOR, PI3Kβ and PI3Kγ).
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Choose Selective ATM/ATR Inhibitors
|Description||AZ31 is a selective and novel ATM inhibitor with an IC50 of <0.0012 μM. It shows excellent selectivity over closely related enzymes (>500 fold selective over DNA-PK and PI3Kα and >1000 fold selective over mTOR, PI3Kβ and PI3Kγ).|
Antitumor effects of AZ31 + SN38 are cytostatic rather than cytotoxic.
Pharmacokinetic investigation of AZ31 as a single agent and in combination with irinotecan revealed that plasma concentrations of AZ31 were highest 1-hour after administration followed by a stepwise decrease at 3, 6 and 16 hour in the combination sensitive CRC098.
ATM enzyme assay:Compounds in 100% DMSO were added to assay plates by acoustic dispensing. ATM enzyme was added in a Hepes buffer (50 mM HEPES pH 7.4, 150 mM NaCl, 10 mM, MnCl2 1 mM, DTT, 5% v/v Glycerol, 0.05% v/v Tween 20) and allowed to preincubate with compound for 30 minutes prior to addition of substrate solution containing p53 and ATP. The enzyme reaction was stopped after 2 hours by the addition of detection reagent (33 mM HEPES pH 7.4, 20 mM EDTA, 0.1 M KF, 0.1 mg/mL BSA, 13 nM D2 Anti-GST antibody (Cisbio) and 0.5 nM Eu3+ Anti-p53phosphoS15 antibody) and incubated overnight before reading on a Pherastar Instrument with a standard HTRF filter block method. The final concentrations of DMSO, ATP and p53 in the assay were 1%, 5 µM, and 50 nM respectively. IC50 values (concentrations of test compound that inhibited 50% of enzyme activity) were determined using a four parameter fit method (smart fitting model) in the data analysis software.
|In vitro||DMSO||53 mg/mL (126.04 mM)|
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