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    A-674563
    A-674563

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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 #: V0164
    CAS #: 552325-73-2Purity ≥98%

    Description: A-674563 is a novel and potent Akt1 inhibitor with potential anticancer activity. It binds to Akt with a Ki of 11 nM in cell-free assays, and shows modest potency against PKA and >30-fold selectivity for Akt1 over PKC. In MiaPaCa-2 cells treated with A-674563 for 48 hour, it slowed the tumor cell proliferation (EC50 = 0.4 μm). In STS cells, phosphorylation of GSK3 and MDM2 was prominently reduced by A-674563 treatment. Akt inhibition-induced G2 cells cycle arrest and apoptosis were also observed in A563-treated STS cells. 

    References:  Mol Cancer Ther. 2005 Jun;4(6):977-86; Cancer Res. 2008 Apr 15;68(8):2895-903.

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    Molecular Weight (MW)358.44
    FormulaC22H22N4O
    CAS No.552325-73-2
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 72 mg/mL (200.9 mM)
    Water: N/A
    Ethanol: 18 mg/mL (50.21 mM)
    Solubility (In vivo)Saline: 30 mg/mL
    Other info

    Synonym: A674563; A 674563; A-674563

    Chemical Name: (S)-1-((5-(3-methyl-1H-indazol-5-yl)pyridin-3-yl)oxy)-3-phenylpropan-2-amine

    InChi Key: BPNUQXPIQBZCMR-IBGZPJMESA-N

    InChi Code: InChI=1S/C22H22N4O/c1-15-21-11-17(7-8-22(21)26-25-15)18-10-20(13-24-12-18)27-14-19(23)9-16-5-3-2-4-6-16/h2-8,10-13,19H,9,14,23H2,1H3,(H,25,26)/t19-/m0/s1

    SMILES Code: N[[email protected]@H](CC1=CC=CC=C1)COC2=CC(C3=CC4=C(NN=C4C)C=C3)=CN=C2


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    In Vitro

    Kinase Assay:  The kinase assay uses His-Akt1 and a biotinylated mouse Bad peptide as substrate. The kinase assay is carried out at room temperature for 30 minutes in 50 μL of reaction buffer [20 mM HEPES, pH 7.5, 10 mM MgCl2, 0.1% (w/v) Triton X-100, 5 μM ATP (Km = 40 μM), 5 μM peptide (Km = 15 μM), 1 mM DTT, 60 ng of Akt1, and 0.5 μCi of [γ-33P]ATP] in the presence of different concentrations of A-674563. Each reaction is stopped by adding 50 μL of termination buffer (0.1 M EDTA, pH 8.0, and 4 M NaCl). The biotinylated Bad peptides are immobilized on streptavidin-coated FLASH plates. After being washed with PBS-Tween 20 (0.05%), the 33P phosphopeptide captured on the FLASH plates is measured with a TopCount Packard Instruments γ counter.

     

    Cell Assay: The cells (MiaPaCa-2 cells) on 96-well plates are gently washed with 200 μL of PBS. Alamar Blue reagent is diluted 1:10 in normal growth media. The diluted Alamar Blue reagent (100 M) is added to each well on the 96-well plates and incubated until the reaction is complete as per manufacturer's instructions. Analysis is done using an fmax Fluorescence Microplate Reader, set at the excitation wavelength of 544 nm and emission wavelength of 595 nm. Data are analyzed using SOFTmax PRO software provided by the manufacturer.

    A-674563 is achieved from A-443654 by replacing the indole with a phenyl moiety and getting oral activity. A-674563 slows proliferation of tumor cells with EC50 of 0.4 μM. A-674563 does not inhibit Akt phosphorylation per se, but blocks the phosphorylation of Akt downstream targets in a dose-dependent manner. A-674563 induced Akt blockade results in decreased STS cell downstream target phosphorylation and tumor cell growth inhibiton. A-674563 induces G2 cell cycle arrest and apoptosis in STS cells.

    In Vivo

    20 mg/kg A-674563 increases plasma insulin in an oral glucose tolerance test. A-674563 shows no significant monotherapy tumor inhibitory activity; the efficacy of the combination therapy is significantly improved compared to paclitaxel monotherapy. A674563-treated (20 mg/kg/bid, p.o.) mice exhibits slower tumor growth and more than 50% decrease in the tumor volume at the termination of the study compared with that in control group. A-674563 is identified to have drastically improved PK profile with oral bioavailability of 67% in mouse, but is 70-fold less active than A-443654.

    Animal model

    Fasted mice

    Formulation & Dosage

    Formulated in 5% dextrose.; 20 or 100mg/kg; A-674563 is administered 30 minutes before the 1 g/kg glucose challenge.

    References

    [1] Luo Y, et al, Mol Cancer Ther, 2005, 4(6), 977-986[2] Zhu QS, et al, Cancer Res, 2008, 68(8), 2895-2903.

     


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

    A-674563

    Akt inhibitors slow tumor growth in vivo. Cancer Res, 2008, 68(8), 2895-2903.



    A-674563

    The effects of Akt inhibitors after in vivo administration.


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