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    Telatinib (BAY 57-9352)
    Telatinib (BAY 57-9352)

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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 #: V0532
    CAS #: 332012-40-5Purity ≥98%

    Description: Telatinib (formerly BAY57-9352) is an orally bioavailable multi-kinase (e.g. VEGFR, PDGFR) inhibitor with potential antineoplastic activity. It inhibits VEGFR2/3, c-Kit and PDGFRα with IC50 values of 6 nM/4 nM, 1 nM and 15 nM, respectively. Telatinib was developed by Bayer company to reverse chemotherapeutic multidrug resistance mediated by ABCG2 efflux transporter in vitro and in vivo.   

    References: Clin Cancer Res. 2008 Jun 1;14(11):3470-6; Br J Cancer. 2008 Nov 18;99(10):1579-85.

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    Molecular Weight (MW)409.83
    CAS No.332012-40-5
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 82 mg/mL (200.1 mM)
    Water: <1 mg/mL
    Ethanol: 1 mg/mL (2.4 mM)
    Other infoIUPAC/Chemical Name: 4-(((4-((4-chlorophenyl)amino)furo[2,3-d]pyridazin-7-yl)oxy)methyl)-N-methylpicolinamide
    InChi Code: InChI=1S/C20H16ClN5O3/c1-22-19(27)16-10-12(6-8-23-16)11-29-20-17-15(7-9-28-17)18(25-26-20)24-14-4-2-13(21)3-5-14/h2-10H,11H2,1H3,(H,22,27)(H,24,25)
    SMILES Code: O=C(C1=NC=CC(COC2=NN=C(NC3=CC=C(Cl)C=C3)C4=C2OC=C4)=C1)NC 
    SynonymsBAY-57-9352; BAY 57-9352; BAY 57-9352; BAY57-9352

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    In Vitro

    In vitro activity: Telatinib has 0.66, 0.17, and 2.5 times higher IC50 values for VEGFR3, c-Kit, and PDGFRβ than VEGFR2, respectively, while Vatalanib exhibits 18, 20, and 16 times higher IC50 values, respectively, indicating that Telatinib has potential benefit over Vatalanib. Telatinib inhibits VEGFR2 autophosphorylation in a whole-cell assay with an IC50 of 19 nM, suppresses VEGF-dependent proliferation of human umbilical vein endothelial cells with an IC50 of 26 nM, and blocks PDGF-stimulated growth of human aortic smooth muscle cells with an IC50 of 249 nM. Telatinib displays little inhibitory activity against the Raf kinase pathway, epidermal growth factor receptor family, the fibroblast growth factor receptor (FGFR) family, and the Tie-2 receptor.

    Kinase Assay: The vanadate (Vi)-sensitive ATPase activity of ABCG2 in the membrane of High Five insect cells is measured. Briefly, membrane (2 μg/0.06 mL) are incubated in ATPase assay buffer with or without 0.4 mM vanadate at 37°C for 5 min and then incubated with varying concentrations of telatinib at 37°C for 5 min. The ATPase reaction is started by the addition of 4 mM Mg-ATP. After incubating at 37°C for 10 min, the reactions are stopped by adding 0.05 mL of 10% SDS solution. The liberated inorganic phosphate is measured.

    Cell Assay: Telatinib has low affinity for the Raf kinase pathway, epidermal growth factor receptor family, the fibroblast growth factor receptor (FGFR) family, or the Tie-2 receptor. Telatinib is metabolized by various cytochrome P450 (CYP) isoforms including CYP3A4/3A5, CYP2C8, CYP2C9, and CYP2C19 as well as by uridine diphosphate glucuronosyltransferase 1A4 (UGT1A4), with the formation of the N-glucuronides of telatinib as the major biotransformation pathway in man. In vitro studies show telatinib to be a weak substrate of the adenosine triphosphate binding cassette (ABC) B1 (ABCB1) transporter. Telatinib at 1 μM significantly enhances the intracellular accumulation of [3H]-mitoxantrone (MX) in ABCG2-overexpressing cell lines. In addition, telatinib at 1 μM significantly reduces the rate of [3H]-MX efflux from ABCG2-overexpressing cells. Furthermore, telatinib significantly inhibits ABCG2-mediated transport of [3H]-E217βG in ABCG2 overexpressing membrane vesicles.

    In VivoGiven that tumor development and metastasis are ascribed to deregulated VEGFR signal pathway, Telatinib treatment significantly inhibits tumor growth and metastasis by blocking the VEGFR signaling and subsequently tumor angiogenesis. In addition to the significant inhibition of tumor angiogenesis, Telatinib treatment induces a significant decrease in endothelium-dependent and endothelium-independent vasodilation, as well as reduction in capillary density, leading to an increase in systolic and diastolic blood pressure. Administration of Telatinib as a single agent exhibits a potent anti-tumor activity in multiple human tumor xenograft models including MDA-MB-231 breast cancer, Colo-205 colon cancer, DLD-1 colon cancer, and H460 non-small cell lung cancer, as well as pancreatic and prostate carcinoma in a dose-dependent manner.
    Animal modelTelatinib causes a significant decrease in endothelium-dependent and endothelium-independent vasodilation. VEGF inhibition by itself decreases NO synthesis, which promotes vasoconstriction, increases peripheral resistance, and therefore can induce an increase in blood pressure. Telatinib (15 mg/kg) with doxorubicin (1.8 mg/kg) significantly decreases the growth rate and tumor size of ABCG2 overexpressing tumors in a xenograft nude mouse model. 
    Formulation & DosageMice: The mice are randomized into four groups and treated with one of the following regimens: (a) vehicle (10% N-methyl-pyrrolidinone, 90% polyethylene glycol 300) (q3d×6), (b) DOX (1.8 mg/kg, i.p., q3d×6), (c) telatinib dissolved in 10% N-methyl-pyrrolidinone, 90% polyethylene glycol 300 (15 mg/kg, p.o., every 2nd and 3rd day; total 12 times), and (d) DOX (1.8 mg/kg, i.p., q3d×6) + telatinib (15 mg/kg, p.o., every 2nd and 3rd day, given 1 h before giving DOX; total 12 times). DOX for injection is prepared by dissolving in saline. Tumor volume is measured using calipers and body weights are recorded. 
    ReferencesClin Cancer Res. 2008 Jun 1;14(11):3470-6; Br J Cancer. 2008 Nov 18;99(10):1579-85.

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


    Br J Cancer. 2008 Nov 4; 99(10): 1579–1585.


    Geometric mean telatinib plasma concentration vs time profiles on day 14 of cycle 1. Br J Cancer. 2008 Nov 4; 99(10): 1579–1585.


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