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    Bafetinib (INNO-406; NS187)
    Bafetinib (INNO-406; NS187)

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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 #: V0679
    CAS #: 859212-16-1Purity ≥98%

    Description: Bafetinib (formerly INNO406; NS-187), an investigational anticancer drug originally developed by Nippon Shinyaku and later licensed to CytRx, is an orally bioavailable dual Bcr-Abl/Lyn inhibitor with potential antineoplastic activity. It inhibits Bcr-Abl/Lyn with IC50s of 5.8 nM/19 nM in cell-free assays. In Bcr-Abl–positive KU812 mouse model, Bafetinib significantly inhibited tumor growth, and completely inhibited tumor growth without causing adverse effects at a dose of 20 mg/kg/day. 

    References: Blood. 2005 Dec 1;106(12):3948-54; Blood. 2007 Jan 1;109(1):306-14. 

    Related CAS #: 887650-05-7; 859212-16-1;  

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    Molecular Weight (MW)576.62
    CAS No.859212-16-1
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 100 mg/mL (173.4 mM)
    Water:<1 mg/mL
    Ethanol: <1 mg/mL
    Solubility (In vivo)0.5% methylcellulose+0.2% Tween 80: 30 mg/mL  
    SynonymINNO-406; INNO 406; NS187; NS187; INNO406;NS-187; NS 187

    Chemical Name: (S)-N-(3-([4,5'-bipyrimidin]-2-ylamino)-4-methylphenyl)-4-((3-(dimethylamino)pyrrolidin-1-yl)methyl)-3-(trifluoromethyl)benzamide


    InChi Code: InChI=1S/C30H31F3N8O/c1-19-4-7-23(13-27(19)39-29-36-10-8-26(38-29)22-14-34-18-35-15-22)37-28(42)20-5-6-21(25(12-20)30(31,32)33)16-41-11-9-24(17-41)40(2)3/h4-8,10,12-15,18,24H,9,11,16-17H2,1-3H3,(H,37,42)(H,36,38,39)/t24-/m0/s1

    SMILES Code: O=C(NC1=CC=C(C)C(NC2=NC=CC(C3=CN=CN=C3)=N2)=C1)C4=CC=C(CN5C[[email protected]@H](N(C)C)CC5)C(C(F)(F)F)=C4

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    In Vitro

    In vitro activity: Bafetinib blocks WT Bcr-Abl autophosphorylation and its downstream kinase activity with IC50 of 11 nM and 22 nM in K562 and 293T cells, respectively. Bafetinib suppresses the growth of the Bcr-Abl-positive cell lines including K562, KU812, and BaF3/wt cells potently without effects on the proliferation of the Bcr-Abl-negative U937 cell line. Moreover, Bafetinib exhibits a dose-dependent antiproliferative effect against Bcr-Abl point mutant cell lines, such as BaF3/E255K cells. In Bcr-Abl+ leukemia cell lines, Bafetinib induces both caspase-mediated and caspase-independent cell death by blocking the phosphorylation of Bcr-Abl.

    Kinase Assay: Bcr-Abl kinase assays are performed in 25 μL of reaction mixture containing 250 μM peptide substrate, 740 Bq/μL [γ-33P]ATP, and 20 μM cold adenosine triphosphate (ATP) by using the SignaTECT protein tyrosine kinase assay system. Each Bcr-Abl kinase is used at a concentration of 10 nM. Kinase assays for Abl, Src, and Lyn are carried out with an enzyme-linked immunosorbent assay (ELISA) kit. The inhibitory effects of NS-187 against 79 tyrosine kinases are tested with KinaseProfiler.

    Cell Assay: K562, BaF3/wt, BaF3/E255K, and BaF3/T315I cells are plated at 1 × 103 in 96-well plates, whereas KU812 and U937 cells are plated at 5 × 103in 96-well plates. Cells are incubated with serial dilutions of Bafetinib for 3 days. Cell proliferation is measured by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; Nacalai Tesque) assay, and the 50% inhibitory concentration (IC50) values are calculated by fitting the data to a logistic curve.

    In VivoIn Bcr-Abl–positive KU812 mouse model, Bafetinib (0.2 mg/kg/day) significantly inhibits tumor growth, and completely inhibits tumor growth without adverse effects at 20 mg/kg/day. For Balb/c mice, Bafetinib shows maximal tolerated dose of 200 mg/kg/d and bioavailability value (BA) of 32%. In a Central nervous system (CNS) leukemia model bearing Ba/F3/wt bcr-ablGFP, Ba/F3/Q252H, or Ba/F3/M351T cells, combination treatment of Bafetinib (60 mg/kg) and cyclosporine A (CsA) (50 mg/kg) leads to more significant inhibition of leukemia growth in the brain than either Bafetinib or CsA alone.
    Animal modelKU812 xenograft is established by subcutaneous injection of KU812 cells into the right flank of Balb/c-nu/nu female mice.  
    Formulation & DosageBafetinib is dissolved in 0.5% methylcellulose;  ≤20 mg/kg/day; p.o. 

    Blood. 2005 Dec 1;106(12):3948-54; Blood. 2007 Jan 1;109(1):306-14. 

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


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