1. Cell Cycle/DNA Damage
    PI3K/Akt/mTOR
  2. ATM/ATR
  3. CP-466722

CP-466722 

Cat. No.: HY-11002 Purity: 99.40%
Handling Instructions

CP-466722 is a rapidly reversible inhibitor of ATM, with an IC50 of 4.1 μM, and has no effects on PI3K or closely related PI3K-like protein kinase (PIKK) family members.

For research use only. We do not sell to patients.

CP-466722 Chemical Structure

CP-466722 Chemical Structure

CAS No. : 1080622-86-1

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Based on 3 publication(s) in Google Scholar

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Description

CP-466722 is a rapidly reversible inhibitor of ATM, with an IC50 of 4.1 μM, and has no effects on PI3K or closely related PI3K-like protein kinase (PIKK) family members.

IC50 & Target[2]

ATM

4.1 μM (IC50)

In Vitro

CP-466722 (CP466722, 6-10 μM) inhibits IR-induced ATM kinase activity, and the inhibition can be rapidly and completely reversed. CP466722 (6, 10 μM) inhibits p53 induction and ATM-dependent phosphorylation in mouse cells, but CP466722 fails to inhibit ATR activity and ATR-dependent phosphorylation of Chk1. CP466722 (6 μM) disrupts ATM-dependent cell cycle checkpoints in cells[1]. CP466722 (1 µM) completely inhibits ATM-dependent phosphorylation in MCF7 cells. CP466722 (10 µM) reduces pKAP1 phosphorylation in MCF7 cells, with an IC50 of 0.41 µM. CP466722 (10 µM) inhibits both pATM and pKAP1 signals[2]. CP-466722 (CP466722, 5-50 μM) inhibits proliferation of SKBr-3 cancer cells more strongly than MCF-7 cancer cells. CP466722 (10 µM) also slightly increases proportions of MCF-7 and SKBr-3 cells in the G1 phase after treatment for 48 hours[3].

Molecular Weight

349.35

Formula

C₁₇H₁₅N₇O₂

CAS No.

1080622-86-1

SMILES

NC1=NC(C2=NC=CC=C2)=NN1C3=C4C=C(OC)C(OC)=CC4=NC=N3

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 7 mg/mL (20.04 mM; Need warming)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.8625 mL 14.3123 mL 28.6246 mL
5 mM 0.5725 mL 2.8625 mL 5.7249 mL
10 mM 0.2862 mL 1.4312 mL 2.8625 mL
*Please refer to the solubility information to select the appropriate solvent.
References
Kinase Assay
[1]

To screen for small molecule inhibitors of ATM kinase activity, an in vitro kinase assay is carried out, and an ELISA assay developes which measures the phosphorylation status of the ATM downstream target p53. Recombinant GST-p53(1-101) and full-length Flag-tagged ATM & ATR are purified for use in the ELISA and in vitro kinase assays. Briefly, Nunc 96 well Maxisorp plates are coated overnight (4°C) with 2 μg of purified, recombinant GST-p53(1-101) in PBS. All subsequent incubations are performed at room temperature. The plates are washed (0.05% v/v-Tween/PBS) before addition of purified recombinant full-length ATM kinase (30-60 ng) in a final volume of 80 μL of reaction buffer (20 mM HEPES, 50 mM NaCl2, 10 mM MgCl2, 10 mM MnCl2, 1 mM DTT and 1 μM ATP) in the presence or absence of compound. Compounds including CP-466722 (10 μM) are added to plates in duplicate and the kinase assay is incubated (90 min). Plates are washed (0.05% v/v-Tween/PBS), blocked (1 h, 1% w/v-BSA/PBS) and rinsed before anti-Phospho(Ser15)-p53 antibody (1:1000/PBS) is added to the plates and incubated (1 h). To reduce non-specific binding plates are washed (0.05% v/v-Tween/PBS) prior to incubation (1 h) with HRP-conjugated goat anti-rabbit IgG secondary antibody (1:5000/PBS). Secondary antibody that is linked to the phosphorylated GST-p53(1-101) protein is detected with TMB substrate reagent. Plates are developed (15-30 min) and the reaction is stopped (1M H2SO4 final concentration) before absorbance is determined (λ450 nm). Compounds that inhibit ATM kinase activity in ELISA assays, are characterized with respect to inhibition of ATM/ATR kinases using in vitro kinase assays. Western blotting using the anti-Phospho(Ser15)-p53 antibody is used as a readout of ATM/ATR inhibition[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Assay
[1]

Cells are plated in triplicate (40,000 cells/plate), incubated as required before culture media and trypsinsed cells are combined and viability determined: Vi-CELL™ XR cell viability analyzer[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References

Purity: 99.40%

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Keywords:

CP-466722CP466722CP 466722ATM/ATRAtaxia telangiectasia mutatedATM and RAD3 relatedInhibitorinhibitorinhibit

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