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    GZD824 Dimesylate
    GZD824 Dimesylate

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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 #: V0675
    CAS #: 1421783-64-3 Purity ≥98%

    Description: GZD824 Dimesylate, the dimesylate salt of GZD824 (HQP1351), is a novel, potent orally bioavailable Bcr-Abl inhibitor for Bcr-Abl(WT) and Bcr-Abl(T315I) with IC50 of 0.34 nM and 0.68 nM, respectively. GZD824 tightly bound to Bcr-Abl(WT) and Bcr-Abl(T315I) with K(d) values of 0.32 and 0.71 nM, respectively, and strongly inhibited the kinase functions with nanomolar IC(50) values. GZD824 potently suppressed proliferation of Bcr-Abl-positive K562 and Ku812 human CML cells with IC(50) values of 0.2 and 0.13 nM, respectively. GZD824 represents a promising and new lead candidate for development of Bcr-Abl inhibitors to overcome acquired imatinib resistance. 

    References: J Med Chem. 2013 Feb 14;56(3):879-94.

    Related CAS: 1257628-77-5  (free base)

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    Molecular Weight (MW)724.77
    FormulaC29H27F3N6O.2CH4O3S
    CAS No.1421783-64-3 (dimesylate salt); 
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 100 mg/mL (137.9 mM)
    Water: 100 mg/mL (137.9 mM)
    Ethanol:<1 mg/mL
    Solubility (In vivo) Saline: 20 mg/mL
    Synonyms GZD824 Dimesylate; GZD 824 Dimesylate; GZD-824 Dimesylate; GZD824; GZD 824; GZD-824


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    In Vitro

    In vitro activity: GZD824 potently inhibits the growth of Ba/F3 cells expressing wildtype Bcr-Abl with IC50 of 1.0 nM. Highly consistent with biochemical kinase inhibition and tight protein binding affinity, GZD824 also strongly inhibits the proliferation of Ba/F3 cells expressing Bcr-AblT315I mutant and 14 other resistance-relevant Bcr-Abl mutants. In addition, GZD824 efficiently suppresses the activation of Bcr-Abl as well as downstream Crkl and STAT5 in a concentration-dependent manner in K562 CML cells.


    Kinase Assay: The kinases ABL1, ABL1(E255K), ABL1 (G250E), ABL1(T315I), and ABL1(Y253F) are P3049, PV3864, PV3865, PV3866, and PV3863 are full-length human recombinant protein expressed in insect cells and histidine-tagged. Inhibition activities of inhibitors against Abl1 and its mutants are performed in 384-well plates using the FRET-based Z′-Lyte assay system. Briefly, the kinase substrate is diluted into 5 μL of kinase reaction buffer; and the kinase is added. Compounds (10 nL) with indicated concentrations are then delivered to the reaction by using Echo liquid handler, and the mixture is incubated for 30 min at room temperature. Then 5 μL of 2X ATP solution is added to initiate the reaction, and the mixture is further incubated for 2 h at room temperature. The resulting reactions contains 10 μM (for wild-type Abl1, and mutants Y253F, Q252H, M351T, and H396P) or 5 μM (for mutants E255K, G250E, T315I) of ATP, 2 μM of Tyr2 Peptide substrate in 50 mM HEPES (PH 7.5), 0.01% BRIJ-35, 10 mM MgCl2, 1 mM EGTA, 0.0247 μg/mL Abl1, and inhibitors as appropriate. Then, 5 μL of development reagent is added, and the mixture is incubated for 2 h at room temperature before 5 μL of stop solution is added. Fluorescence signal ratio of 445 nm (Coumarin)/520 nm (fluorescin) is examined on an EnVision Multilabel Reader. The data are analyzed using Graphpad Prism5. The data are the mean value of three experiments.


    Cell Assay: Cells (Ba/F3 cells expressing wildtype and mutant Bcr-Abl) in the logarithmic phase are plated in 96-well culture dishes. Twenty-four hours later, cells are treated with the corresponding compounds or vehicle control at the indicated concentration for 72 h. CCK-8 is added into the 96-well plates (10 μL/well) and incubated with the cells for 3 h. OD450 and OD650 are determined by a microplate reader. Absorbance rate (A) for each well is calculated as OD450 – OD650. The cell viability rate for each well is calculated as V% = (As – Ac)/(Ab – Ac) × 100%, and the data were further analyzed using Graphpad Prism5. The data are the mean value of the three experiments. As is the absorbance rate of the test compound well, Ac is the absorbance rate of the well without either cell or test compound, and Ab is the absorbance rate of the well with cell and vehicle control.

    In VivoGZD824, at doses of 5 and 10 mg/kg/day, dose-dependently inhibits the tumor growth in the K562 tumor xenograft and the Ku812 xenograft model without mortality or significant body loss. Besides, GZD824 (20 mg/kg/day) suppresses tumor growth in mice bearing allografted Ba/F3 cells expressing Bcr-AblWT and Bcr-AblT315I.
    Animal modelMice xenograft or allograft tumor models using K562 and transformed Ba/F3 cells expressing native Bcr-Abl or Bcr-Abl mutants
    Formulation & DosageDissolved in 1% DMSO, 22.5% Cremophor, 7.5% ethanol, and 69% normal saline; 20 mg/kg ; p.o.
    References

    J Med Chem. 2013 Feb 14;56(3):879-94.


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

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