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    IOX1
    IOX1

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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 #: V0372
    CAS #: 5852-78-8Purity ≥98%

    Description: IOX1 (5-Carboxy-8-hydroxyquinoline) is a novel, potent and broad-spectrum inhibitor of 2OG oxygenases (e.g. JMJD and JmjC demethylases) with anticancer activity. In MALDI-TOF MS assay, IOX 1 inhibited JMJD2E, JMJD2A, FIH and PHD2 with IC50 values of 2.4, 1.7, 20.5 and 14.3 μM, respectively. In HeLa cells, IOX 1 increased H3K9me3 fluorescence intensity, suggesting that IOX 1 inhibited H3K9me3 demethylation induced by JMJD2A with IC50 value of 86.5 μM.

    References: ChemMedChem. 2014 Mar;9(3):566-71.

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    • 香港大学
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    Molecular Weight (MW)189.17
    FormulaC10H7NO3
    CAS No.5852-78-8
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 37 mg/mL (195.6 mM)
    Water: <1 mg/mL
    Ethanol: <1 mg/mL
    Other info

    Chemical Name: 8-Hydroxyquinoline-5-carboxylic acid

    InChi Key: JGRPKOGHYBAVMW-UHFFFAOYSA-N

    InChi Code: InChI=1S/C10H7NO3/c12-8-4-3-7(10(13)14)6-2-1-5-11-9(6)8/h1-5,12H,(H,13,14)

    SMILES Code: O=C(C1=C2C=CC=NC2=C(O)C=C1)O

    SynonymsIOX-1; IOX 1; IOX1


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    In Vitro

    In vitro activity: IOX1 increases H3K9me3 levels in HeLa cells via KDM4A inhibition without significant effect on cell viability. IOX1 shows lower efficacy in HeLa cells due to low cell permeability, while the n-octyl ester derivative improves its cell permeability.


    Kinase Assay: All reagents are diluted in 50 mM HEPES, 0.1% BSA, pH 7.5 supplemented with 0.01% Tween20 and allowed to equilibrate to room temperature prior to addition to plates. Catalytic turnover assays are run in 10 μL volumes in lowvolume 384-well plates at RT. The reaction consisted of enzyme (5 nM), biotinylated substrate peptide (30 nM), Fe(II) (1 μM), ascorbate (100 μM), 2OG (10 μM) and run at RT. For PHD2, the reaction consisted of enzyme (5 nM), biotinylated substrate peptide (60nM), Fe(II) (20 μM), ascorbate (200 μM), 2OG (2 μM) and run at RT. EDTA is used to quench the reaction (5 μL), AlphaScreen donor (Streptavidin-conjugated) and acceptor (Protein A-conjugated) beads preincubated with peptide product antibodies are added (5 μL). Plates are foil-sealed to protect from light, incubated at room temperature for 60 minutes and read on a PHERAstar FS plate reader using an AlphaScreen 680 excitation/570 emission filter set. The final bead concentration in 20 μL reaction is 20 μg/mL. IC50 values are calculated in Prism 6 after normalisation against corresponding DMSO controls.


    Cell Assay:   Antiproliferative activities of compounds are determined by the MTT assay. HeLa cells are seeded into 96-well plates and cultured at 37 °C for 24 h to achieve 70%. Subsequently, the medium is replaced with DMEM medium containing the tested compounds in different concentrations of 1-300 μM in 1% DMSO. Staurosporine in 0.03-10 μM final concentration is used as a control for cytotoxicity. After 24 h of treatment, the medium is replaced with CellTiter 96 Aqueous One Solution Reagent and incubated for 4 hours. CC50 values are calculated in Prism 6 software after normalisation against corresponding 1% DMSO treated cells and 1% DMSO in media (no cells) controls.

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    References

    ChemMedChem. 2014 Mar;9(3):566-71


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

    IOX1

    ChemMedChem. 2014 Mar; 9(3): 566–571. n-Octyl ester 5 increases H3K9me3 levels in HeLa cells via KDM4A inhibition.


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