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    AT9283
    AT9283

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    This product is for research use only, not for human use. We do not sell to patients.
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    InvivoChem Cat #: V0318
    CAS #: 896466-04-9 Purity ≥98%

    Description: AT9283 is a novel, potent and selective inhibitor of multikinase including Aurora A/B, JAK2/3, Abl (T315I) and Flt3 etc. It was identified from fragment-based approach as a potential antineoplastic agent for the treatment of multiple myeloma. AT9283 inhibits JAK2/3 with IC50s of 1.2 nM/1.1 nM in cell-free assays. AT9283 binds to and inhibits Aurora kinases A and B, JAK2 and the kinase BCR-ABL, which may result in the inhibition of cellular division and proliferation and the induction of apoptosis in tumor cells that overexpress these kinases.

    References: J Med Chem. 2009 Jan 22;52(2):379-88.

    Related CAS: 896466-61-8 (HCl); 896466-76-5 (lactate); 896466-04-9 (free base) 

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    Molecular Weight (MW)381.43
    FormulaC19H23N7O2
    CAS No.896466-04-9 (free base);
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 76 mg/mL (199.3 mM)
    Water: <1 mg/mL
    Ethanol: 38 mg/mL (99.6 mM)
    Solubility (In vivo)2% DMSO+30% PEG 300+ddH2O: 5 mg/mL
    Synonyms

    AT9 283; AT-9283; AT9283

    Chemical Name: 1-cyclopropyl-3-(3-(5-(morpholinomethyl)-1H-benzo[d]imidazol-2-yl)-1H-pyrazol-4-yl)urea

    InChi Key: LOLPPWBBNUVNQZ-UHFFFAOYSA-N

    InChi Code: InChI=1S/C19H23N7O2/c27-19(21-13-2-3-13)24-16-10-20-25-17(16)18-22-14-4-1-12(9-15(14)23-18)11-26-5-7-28-8-6-26/h1,4,9-10,13H,2-3,5-8,11H2,(H,20,25)(H,22,23)(H2,21,24,27)

    SMILES Code: O=C(NC1=CNN=C1C2=NC3=CC(CN4CCOCC4)=CC=C3N2)NC5CC5 


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    In Vitro

    In vitro activity: AT9283 leads to a clear polyploid phenotype by inhibiting the activity of Aurora B kinase in HCT116 cells with IC50 of 30 nM. Furthermore, AT9283 also produces the potent inhibition on HCT116 colony formation.


    Kinase Assay: Assays for Aurora A and B are performed in a DELFIA format. Aurora A enzyme is incubated with AT9283 and 3 μM cross-tide substrate (biotin-CGPKGPGRRGRRRTSSFAEG) in 10 mM MOPS, pH 7, 0.1 mg/mL BSA, 0.001% Brij-35, 0.5% glycerol, 0.2 mM EDTA, 10 mM MgCl2, 0.01% β-mercaptoethanol, 15 μM ATP, and 2.5% DMSO. Aurora B enzyme is incubated with AT9283, 3 μM of the above substrate in 25 mM Tris, pH 8.5, 5 mM MgCl2, 0.1 mg/mL BSA, 0.025% Tween-20, 1 mM DTT, 15 μM ATP, and 2.5% DMSO. Reactions are allowed to proceed for 60 minutes and 45-90 minutes for Aurora A and Aurora B, respectively, before quenching with EDTA. The reaction mixtures are then transferred to a neutravidin-coated plate, and phosphorylated peptide is quantified by means of a phospho-specific antibody and a europium labeled secondary antibody using time-resolved fluorescence (excitation, 337 nm; emission, 620 nm). IC50 values for the control compounds are 92 nM (Aurora A assay) and 17 nM (Aurora B).


    Cell Assay: HCT 116 cells are cultured in DMEM + 10% FBS + GLUTAMAX I. Black 96-well flat-bottomed (clear) tissue culture treated plates are seeded in 200 μL of medium and incubated for approximately 16 hours at 37°C in a humidified atmosphere of 5% CO2 in air. Cells are treated with test compound at nine different concentrations (spanning 1 nM to 10 μM, plus DMSO vehicle control) and then incubated for 72 hours. Polyploidy morphological observations of the cells are then noted. The concentration of AT9283 required to produce a distinct polyploid phenotype is reported. Cells are seeded at a concentration of 75−100 cells/mL relevant culture media onto 6- or 24-well tissue culture plates and allowed to recover for 16 hours. Test compound (11 concentrations spanning 0.1 nM to 10 μM) or vehicle control (DMSO) is added to duplicate wells to give a final DMSO concentration of 0.1%. Following compound addition, colonies are allowed to grow between 10 and 14 days for optimum discrete colony counting. Colonies are fixed in 2 mL of Carnoys fixative (25% acetic acid, 75% MeOH) and stained in 2 mL of 0.4% w/v crystal violet. The numbers of colonies in each well is counted. IC50 values are calculated by sigmoidal dose-response (variable slope) IC50 curves using Prism Graphpad software.

    In VivoIn HCT116 human colon carcinoma xenograft bearing mice, AT9283 treatment (15 mg/kg and 20 mg/kg) for 16 days results in a significant tumor growth inhibition of 67% and 76%, respectively. In addition, AT9283 also exhibits a significantly longer half-life in tumors(2.5 hours) compared with plasma (0.5 hour) and modest oral bioavailability in mice (Fp.o. = 24%).
    Animal modelHCT116 cells are injected s.c. Into the hind flank of male BALB/c mice.
    Formulation & DosageDissolved in 10% DMSO, 20% water, 70% hydroxypropyl- β-cyclodextrin (25% w/v aq).; 15 and 20 mg/kg; administrated i.p.
    References

    J Med Chem. 2009 Jan 22;52(2):379-88; Int J Cancer. 2012 Jun 15;130(12):2997-3005. 


    These protocols are for reference only. InvivoChem does not independently validate these methods.

    AT9283 plus docetaxel enhances apoptosis in Granta-519 MCL cells. Int J Cancer. 2012 Jun 15;130(12):2997-3005.AT9283 potently inhibits Aurora B activity in B-NHL cell lines. Int J Cancer. 2012 Jun 15;130(12):2997-3005.AT9283 plus docetaxel suppresses tumor growth and prolong survival of Granta-519-SCID xenografted mice. Int J Cancer. 2012 Jun 15;130(12):2997-3005.


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