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    17-DMAG (Alvespimycin) HCl
    17-DMAG (Alvespimycin) HCl

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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 #: V0874
    CAS #: 467214-21-7Purity ≥98%

    Description: 17-DMAG (Alvespimycin, NSC-707545, BMS-826476 HCl, KOS-1022) HCl, the hydrochloride salt of 17-DMAG, is a novel and potent HSP90 (heat shock protein 90) inhibitor with potential antineoplastic activity. It inhibits HSP90 with an IC50 of 62 nM in a cell-free assay. 17-DMAG is an analogue of the anticancer benzoquinone antibiotic geldanamycin. 17-DMAG binds to HSP90, subsequently, the function of Hsp90 is inhibited, leading to the degradation and depletion of its client proteins such as kinases and transcription factors involved with cell cycle regulation and signal transduction.

    References: J Med Chem. 2006 Jul 27;49(15):4606-15; Mol Cancer Ther. 2007 Mar;6(3):1123-32; Cancer Res. 2009 Jun 1;69(11):4750-9.

    Related CAS: 467214-20-6 (free base);  467214-21-7(HCl);

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    Molecular Weight (MW)653.21
    FormulaC32H48N4O8•HCl
    CAS No.467214-21-7(HCl); 
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 131 mg/mL (200.6 mM)
    Water: <1 mg/mL
    Ethanol: <1 mg/mL
    Solubility (In vivo)1% DMSO+30% polyethylene glycol+1% Tween 80: 30 mg/mL
    SynonymsAlvespimycin; Alvespimycin HCl; Alvespimycin Hydrochloride; NSC 707545; BMS 826476 HCl; KOS 1022; NSC-707545; BMS-826476 HCl; KOS-1022; NSC707545; BMS826476 HCl; KOS1022 

    Chemical Name: (4E,6Z,8S,9S,10E,12S,13R,14S,16R)-19-(2-(dimethylamino)ethoxy)-13-hydroxy-8,14-dimethoxy-4,10,12,16-tetramethyl-3,20,22-trioxo-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18-pentaen-9-yl carbamate hydrochloride

    InChi Key: BXRBNELYISPBKT-BJGZLATJSA-N

    InChi Code: InChI=1S/C32H47N3O9.ClH/c1-18-14-22-28(38)23(17-24(36)30(22)43-13-12-35(5)6)34-31(39)19(2)10-9-11-25(41-7)29(44-32(33)40)21(4)16-20(3)27(37)26(15-18)42-8;/h9-11,16-18,20,25-27,29,37H,12-15H2,1-8H3,(H2,33,40)(H,34,39);1H/b11-9-,19-10+,21-16+;/t18-,20+,25+,26+,27-,29+;/m1./s1

    SMILES Code: NC(O[[email protected]@H](/C(C)=C/[[email protected]](C)[[email protected]@H](O)[[email protected]@H](OC)C[[email protected]](C)CC1=C2OCCN(C)C)[[email protected]@H](OC)/C=C\C=C(C)\C(NC(C1=O)=CC2=O)=O)=O.[H]Cl


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    In Vitro

    In vitro activity: 17-DMAG displays ~2 times potency against human Hsp90 than 17-AAG, with IC50 of 62 nM versus 119 nM. In SKBR3 and SKOV3 cells which over-express Hsp90 client protein Her2, 17-DMAG causes down-regulation of Her2 with EC50 of 8 nM and 46 nM, respectively, as well as induction of Hsp70 with EC50 of 4 nM and 14 nM, respectively, leading to significant cytotoxicity with GI50 of 29 nM and 32 nM, respectively, consistent with Hsp90 inhibition. 17-DMAG in combination with vorinostat synergistically induces apoptosis of the cultured MCL cells as well as primary MCL cells, more potently than either agent alone, by markedly attenuating the levels of cyclin D1 and CDK4, as well as of c-Myc, c-RAF and Akt. In contrast to 17-AAG which is only active for IKKβ in chronic lymphocytic leukemia (CLL) cells, 17-DMAG treatment effectively leads to depletion of the Hsp90 client protein, resulting in diminished NF-κB p50/p65 DNA binding, decreased NF-κB target gene transcription, and caspase-dependent apoptosis. By targeting the NF-κB family, 17-DMAG selectively mediates dose- and time-dependent cytotoxicity against CLL cells, but not normal T cells or NK cells important for immune surveillance.


    Kinase Assay: This assay utilizes a boron difluoride dipyrromethene (BODIPY) labeled geldanamycin analogue (BODIPY-AG) as a probe and measured fluorescence polarization upon binding of the probe to a protein. Native human Hsp90 protein (α + β isoforms) is isolated from HeLa cells. BODIPY-AG solution is freshly prepared in FP assay buffer (20 mM HEPES-KOH, pH 7.3, 1.0 mM EDTA, 100 mM KCl, 5.0 mM MgCl2, 0.01% NP-40, 0.1 mg/mL fresh bovine γ-globulin (BGG), 1.0 mM fresh DTT, and protease inhibitor from stock solution in DMSO. Competition curves are obtained by mixing 10 μL each of a solution containing BODIPY-AG and Hsp90, and a serial dilution of 17-DMAG freshly prepared in FP assay buffer from stock solution in DMSO. Final concentrations are 10 nM BODIPY-AG, 40 or 60 nM Hsp90, varying concentration of 17-DMAG (0.10 nM-10 μM), and ≤0.25% DMSO in a 384-well microplate. After 3 hours incubation at 30 °C, fluorescence anisotropy (γEx = 485 nm, γEm = 535 nm) is measured on an EnVision 2100 multilabel plate reader. IC50 value of 17-DMAG is obtained from the competition curves.


    Cell Assay: Cells (Chronic lymphocytic leukemia (CLL)) are exposed to various concentrations of 17-DMAG for 24, or 48 hours. For the assessment of cytotoxicity, MTT reagent is then added, and plates are incubated for an additional 24 hours before spectrophotometric measurement. Apoptosis is determined by staining with annexin V-fluorescein isothiocyanate and propidium iodide (PI).

    In Vivo17-DMAG treatment at 5 mg/kg or 25 mg/kg thrice per week significantly reduces tumor growth of TMK-1 xenografts, by significantly reducing vessel area and numbers of proliferating tumor cells in sections. Consistent the inhibition of FAK signaling in vivo, 17-DMAG treatment at 25 mg/kg three times a week significantly suppresses tumor growth, and metastasis of ME180 and SiHa xenografts in mice. Administration of 17-DMAG at 10 mg/kg for 16 days significantly decreases the white blood cell count and prolongs the survival in a TCL1-SCID transplant mouse model
    Animal modelSCID mice engrafted with TCL1 leukemia cells
    Formulation & DosageDissolved in  DMSO; 10 mg/kg; i.p. injection
    References

    J Med Chem. 2006 Jul 27;49(15):4606-15; Mol Cancer Ther. 2007 Mar;6(3):1123-32; Cancer Res. 2009 Jun 1;69(11):4750-9.


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

    17-DMAG (Alvespimycin) HCl

    FRNK and Hsp90 inhibition delay focal adhesion turnover. Cancer Res. 2009 Jun 1;69(11):4750-9. 
     

    17-DMAG (Alvespimycin) HCl

    FAK inhibition decreases xenograft growth and can be achieved with 17-DMAG in vivo. Cancer Res. 2009 Jun 1;69(11):4750-9. 
     

    17-DMAG (Alvespimycin) HCl

    17-DMAG decreases disease burden in two SiHa metastasis models. Cancer Res. 2009 Jun 1;69(11):4750-9. 


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