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    InvivoChem Cat #: V0126
    CAS #: 958852-01-2Purity ≥98%

    Description: GSK1059615 is a novel, potent and reversible inhibitor of P13K (phosphatidylinositol-3-kinases) with potential anticancer activity. It is a pyridinylquinoline analog that also inhibits oncogenic mutants of PI3Kα. Basically, it  is a dual inhibitor of PI3Kα/β/δ/γ and mTOR with IC50 of 0.4 nM/0.6 nM/2 nM/5 nM and 12 nM, respectively. The thiazolidinedione ring of GSK1059615 forms an interaction with the catalytic lysine (Lys833) within the ATP-binding pocket. In cellular assay, GSK-1059615 is reported to induce G1 arrest and apoptosis in a variety of cell lines. Among these, the breast tumor cells display more sensitive. Moreover, GSK1059615 significantly suppresses tumor growth and increases plasma insulin levels in xenograft mice.

    References: ACS Med Chem Lett. 2010 Jan 19;1(1):39-43.

    Related CAS: 958852-01-1

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    Molecular Weight (MW)




    CAS No.



    -20℃ for 3 years in powder form

    -80℃ for 2 years in solvent

    Solubility (In vitro)

    DMSO: 2 mg/mL (6.0 mM)

    Water:<1 mg/mL

    Ethanol: <1 mg/mL


    GSK-1059615; GSK 1059615; GSK1059615

    Chemical Name


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    In Vitro

    Kinase Assay: The measurement of the GSK1059615-dependent inhibition of the PI3Ks is accessed using a HTRF based PI3K profiling assay kit. 400 pM enzyme is used in PI3Kα and δ assays, 200 pM in PI3Kβ assays, and 1 nM in PI3Kγ assay. In addition, the PI3Kα, β, and δ assays are run with 150 mM NaCl and 100 μM ATP, while the PI3Kγ assay is run with no NaCl and 15 μM ATP. All reactions are run at 10 μM PIP2. GSK1059615 is serially diluted (3-fold in DMSO), and 50 nL is transferred to a 384-well low-volume assay plate. PI3K Reaction Buffer is prepared by diluting the stock 1:4 with de-ionized water. Freshly prepared DTT is added at a final concentration of 5 mM on the day of use. Enzyme addition and GSK1059615 pre-incubation are initiated by the addition of 2.5 µL of PI3K in reaction buffer. Plates are incubated at room temperature for 15 min. Reactions are initiated by addition of 2.5 µL of 2× substrate solution (PIP2 and ATP in 1× reaction buffer). Plates are incubated at room temperature for one hour. Reactions are quenched by the addition of 2.5 µL of stop solution. The quenched reactions are then processed to detect product formation by adding 2.5 µL of Detection Solution. Following a 1-hour incubation in the dark, the HTRF signal is measured on the Envision plate reader set for 330nm excitation and dual emission detection at 620nm (Eu) and 665nm (APC). The IC50 value is then obtained.


    Cell Assay: Antiproliferative cellular assays are conducted using PC3 and MCF7.1 human tumor cell lines. MCF7.1 is an in vivo selected line and originally derived from the parental human MCF7 breast cancer cell line. Cell lines are cultured in RPMI supplemented with 10% fetal bovine serum, 100 units/mL penicillin, and 100 μg/mL streptomycin, 10 mM HEPES, and 2 mM glutamine at 3°C under 5% CO2. MCF7.1 cells or PC3 cells are seeded in 384-well plates in media at 1000 cells/well or 3000 cells/well, respectively, and incubated overnight prior to the addition of GDC-0980 to a final DMSO concentration of 0.5% v/v. MCF7.1 cells and PC3 cells are incubated for 3 days and 4 days, respectively, prior to the addition of CellTiter-Glo reagen and reading of luminescence using an Analyst plate reader. For antiproliferative assays, a cytostatic agent such as aphidicolin and a cytotoxic agent such as staurosporine are included as controls. Dose−response curves are fit to a 4-parameter equation and relative IC50s are calculated using Assay Explorer software..

    Cells (T47D and BT474 cells) are plate at a density of 1 × 104 cells per well in clear flat-bottomed 96-well plates and incubated overnight. Then, GSK1059615 is added and the plates are incubated for 30 min. At the end of incubation, media is aspirated from the plates, and the plate is wash once with cold PBS. 80 μL MSD Lysis buffer is added into each well and the plates are incubated on a shaker at 4 °C for at least 30 min. For Akt duplex assay, plates are washed with 200 μL/well wash buffer for 4 times and tapped on paper towel to blot. Then, 60 μL lysates is added to each well and the plates are incubated on shaker at room temperature for 1 hour. After another 4 times washing, antibody is added (25 μL per well) and the plates are incubated on shaker for 1 hour and washed again. Finally, Read Buffer is added (150 μL per well) and the plates are read immediately. IC50 values are then obtained.

    In Vivo

    In xenograft mice models of BT474 or HCC1954 breast cancer cells, GSK1059615 (25 mg/kg) effectively inhibits tumor growth.

    Animal model

    Xenograft mice models of BT474 or HCC1954 cells

    Formulation & Dosage

    25 mg/kg; oral gavage


    [1] Carnero A. Expert Opin Investig Drugs, 2009, 18(9), 1265-1277.[2] Maira SM, et al. Curr Top Microbiol Immunol, 2010, 347, 209-239.

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


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