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    GSK-690693
    GSK-690693

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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 #: V0157
    CAS #: 937174-76-0Purity ≥98%

    Description: GSK690693, an aminofurazan derivative, is a novel, potent and ATP-competitive pan-Akt inhibitor targeting Akt1/2/3 with potential anticancer activity. It inhibits Akt1/2/3 with IC50 of 2 nM/13 nM/9 nM in cell-free assays. The antiproliferative effects of GSK690693 was selective for the cancer cells, asit did not inhibit the proliferation of normal human CD4(+) peripheral T lymphocytes as well as mouse thymocytes. Phosphorylation of downstream substrates of AKT was reduced in both sensitive and insensitive cell lines on treatment with GSK690693, suggesting that the cause of resistance was not related to the lack of AKT kinase inhibition.

    References: Expert Opin Investig Drugs. 2010 Nov;19(11):1355-66.  

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    Molecular Weight (MW)

    425.48

    Formula

    C21H27N7O3

    CAS No.

    937174-76-0

    Storage

    -20℃ for 3 years in powder form

    -80℃ for 2 years in solvent

    Solubility (In vitro)

    DMSO: 39 mg/mL (91.7 mM)

    Water: <1 mg/mL

    Ethanol: <1 mg/mL

    Solubility (In vivo)

    15% Captisol: 30 mg/mL

    Chemical Name/Synonym

    4-[2-(4-amino-1,2,5-oxadiazol-3-yl)-1-ethyl-7-[[(3S)-piperidin-3-yl]methoxy]imidazo[4,5-c]pyridin-4-yl]-2-methylbut-3-yn-2-ol; GSK690693; GSK-690693; GSK 690693


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    In Vitro

    Kinase Assay: His-tagged full-length Akt1, 2, or 3 are expressed and purified from baculovirus. Activation is carried out with purified PDK1 to phosphorylate Thr308 and purified MK2 to phosphorylate Ser473. To more accurately measure time-dependent inhibition of Akt, activated Akt enzymes are incubated with GSK690693 at various concentrations at room temperature for 30 minutes before the reaction is initiated with the addition of substrate. Final reaction contains 5 nM to 15 nM Akt1, 2, and 3 enzymes; 2 μM ATP; 0.15 μCi/μL[γ-33P]ATP; 1 μM Peptide (Biotin-aminohexanoicacid-ARKR-ERAYSFGHHA-amide); 10 mM MgCl2; 25 mM MOPS (pH 7.5); 1 mM DTT; 1 mM CHAPS; and 50 mM KCl. The reactions are incubated at room temperature for 45 minutes, followed by termination with Leadseeker beads in PBS containing EDTA (final concentration, 2 mg/mL beads and 75 mM EDTA). The plates are then sealed, the beads are allowed to settle for at least 5 hours, and product formation is quantitated using a Viewlux Imager.

     

    Cell Assay: Cells (T47D, ZR-75-1, BT474, HCC1954, MDA-MB-453, LNCaP, etc.) are plated at densities that allow untreated cells to grow logarithmically during the course of a 3-day assay. Briefly, cells are plated in 96- or 384-well plates and incubated overnight. Cells are then treated with GSK690693 (ranging from 30 μM-1.5 nM) and incubated for 72 hours. Cell proliferation is measured using the CellTiter Glo reagent. Data are analyzed using the XLFit curve-fitting tool for Microsoft Excel. IC50 values are obtained by fitting data to Eq, 2.

    GSK690693 is very selective for the Akt isoforms versus the majority of kinases in other families. However, GSK690693 is less selective for members of the AGC kinase family including PKA, PrkX, and PKC isozymes with IC50 of 24 nM, 5 nM, and 2-21 nM, respectively. GSK690693 also potently inhibits AMPK and DAPK3 from the CAMK family with IC50 of 50 nM and 81 nM, respectively, and PAK4, 5, and 6 from the STE family with IC50 of 10 nM, 52 nM, and 6 nM, respectively. GSK690693 inhibits the phosphorylation of GSK3β in tumor cells with IC50 ranging from 43 nM to 150 nM. GSK690693 treatment leads to a dose-dependent increase in the nuclear accumulation of the transcription factor FOXO3A. GSK690693 potently inhibits the proliferation of T47D, ZR-75-1, BT474, HCC1954, MDA-MB-453, and LNCaP cells with IC50 of 72 nM, 79 nM, 86 nM, 119 nM, 975 nM, and 147 nM, respectively. GSK690693 treatment induces apoptosis at concentrations >100 nM in both LNCaP and BT474 cells. Consistent with the role of AKT in cell survival, GSK690693 induces apoptosis in sensitive ALL cell lines.

    In Vivo

    A single administration of GSK690693 inhibits GSK3β phosphorylation in human breast carcinoma (BT474) xenografts in a dose- and time-dependent manner. Similarly, GSK690693 induces a reduction in phosphorylation of the Akt substrates, PRAS40, and FKHR/FKHRL1. GSK690693 also results in an acute increase in blood glucose, returning to baseline 8 to 10 hours after drug administration. Administration of GSK690693 induces reductions in phosphorylated Akt substrates in vivo, and potently inhibits the growth of human SKOV-3 ovarian, LNCaP prostate, and BT474 and HCC-1954 breast carcinoma xenografts, with maximal inhibition of 58% to 75% at the dose of 30 mg/kg/day. GSK690693 exhibits efficacy irrespective of the mechanism of Akt activation involved. GSK690693 is most effective in delaying tumor progression in Lck-MyrAkt2 mice expressing a membrane-bound, constitutively active form of Akt.

    Animal model

    Female CD1 Swiss Nude mice injected with LNCaP, SKOV-3, or PANC1 cells, and C.B-17 SCID mice with HCC1954, MDA-MB-453, or BT474 cells

    Formulation & Dosage

    Dissolved in either 4% DMSO/40% hydroxypropyl-β-cyclodextrin in water (pH 6.0) or 5% dextrose (pH 4.0); 30 mg/kg; i.p. injection

    References

    [1] Rhodes N, et al. Cancer Res, 2008, 68(7), 2366-2374.[2] Levy DS, et al. Blood, 2009, 113(8), 1723-1729.

     


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

    GSK690693 GSK690693


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