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    InvivoChem Cat #: V0129
    CAS #: 677297-51-7Purity ≥98%

    Description: TG100-115 is a novel, potent and selective PI3Kγ/δ inhibitor with potential cardioprotecting effects. It inhibits PI3Kγ/δ  with IC50 of 83 nM/235 nM respectively, and has little effect on PI3Kα/β. 

    References: Proc Natl Acad Sci U S A. 2006 Dec 26;103(52):19866-71; J Pharmacol Exp Ther. 2009 Mar;328(3):758-65. 

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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: 9 mg/mL (25.98 mM)

    Water:<1 mg/mL

    Ethanol: <1 mg/mL

    Solubility (In vivo)

     5% DMSO+30% PEG 300+ddH2O: 0.4mg/mL 

    Other info

    Synonym: TG100115; TG-100115; TG 100115; TG-100-115; TG100-115 ; TG 100-115.

    Chemical Name: 3-[2,4-diamino-6-(3-hydroxyphenyl)pteridin-7-yl]phenol


    InChi Code: InChI=1S/C18H14N6O2/c19-16-15-17(24-18(20)23-16)22-14(10-4-2-6-12(26)8-10)13(21-15)9-3-1-5-11(25)7-9/h1-8,25-26H,(H4,19,20,22,23,24)

    SMILES Code: OC1=CC=CC(C2=NC3=NC(N)=NC(N)=C3N=C2C4=CC=CC(O)=C4)=C1

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    In Vitro

    Kinase Assay: Forty mL of reaction buffer (20 mM Tris/4 mM MgCl2/10 mM NaCl, pH 7.4) containing 50 mM D-myo-phosphatidylinositol 4,5-bisphosphate substrate and the desired PI3K isoform are aliquoted to 96-well plates; kinase concentrations are 250-500 ng/well, such that linear kinetics are achieved over 90 min. TG100-115 is then added as 2.5 mL of a DMSO stock to final concentration range of 100 mM to 1 nM. Reactions are initiated by addition of 10 mL of ATP to a final concentration of 3 mM, and after 90 min, 50 mL of Kinase-Glo reagent added to quantify residual ATP levels; luminosity is measured using an Ultra 384 instrument. Control reactions omitting either TG100-115 or substrate are also performed. IC50 values are derived from experimental data by nonlinear curve fitting using Prism Version 4.


    Cell Assay: Human umbilical vein endothelial cells (HUVECs) plated in 96-well cluster plates (5 × 103 cells/well) are cultured in assay medium (containing 0.5% serum and 50 ng/ml VEGF) in the presence or absence of TG100-115, and cell numbers are quantified by XTT assay 24, 48, or 72 hours late.  

    TG100-115 inhibits PI3Kγ and -δ, with IC50 of 83 and 235 nM, respectively. TG100-115 is not active for PI3Kα and -β, with IC50 of 1.2 and 1.3 mM. In human umbilical vein endothelial cells (HUVECs), TG100-115 (up to 10 μM) has no effects on cell proliferation and VEGF-stimulated ERK phosphorylation. However, TG100-115 (10 μM) interrupts other VEGF signaling pathways, such as those that culminate in VE-cadherin phosphorylation. In HUVECs, TG100-115 (10 μM) inhibits the VEGF-induced increase of total level of VE-cadherin. TG100-115 inhibits VEGF mediated phosphorylation of mTOR and p70S6 kinase, both of which are downstream of PI3K. TG100-115 (125 nM to 10 μM) also inhibits FGF-stimulated phosphorylation of Akt. 

    In Vivo

    In Miles assay models, TG100-115 (1-5 mg/kg) reduces edema formation and inflammation in rats. In rigorous rodent and porcine models of myocardial ischemia (MI), TG100-115 (0.5-5 mg/kg) provides potent cardioprotection, limits infarct development, and preserves myocardial function. In mice, TG100-115 (5 mg/kg) markedly diminishes vascular permeability (VP) in response to either Sema3A or VEGF, indicating that both factors may depend on PI3Kγ/δ to induce VP. In a mouse asthma model, aerosolized TG100-115 markedly reduces the pulmonary eosinophilia, inhibits interleukin-13 and mucin accumulation.

    Animal model

    Rat (Sprague-Dawley) myocardial ischemia (MI) model

    Formulation & Dosage

     Dissolved in PEG or sulfobutyl ether β-cyclodextrin; 0.5-5 mg/kg; i.v. administration


    [1] Doukas J, et al. Proc Natl Acad Sci U S A, 2006, 103(52), 19866-19871.[2] Palanki MS, et al. J Med Chem, 2007, 50(18), 4279-4294.

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




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