Render Target: STATIC
Render Timestamp:
4/7/2025, 5:56:06 AM EDT
4/7/2025, 9:56:06 AM UTC
Commit: c91f970ca8df4f527662a05c7bd6e4d03c6fa173
XML generation date: 2025-03-07 13:06:17.453
Product last modified at: 2024-05-30T07:19:23.129Z
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PDP - Template Name: Polyclonal Antibody
PDP - Template ID: *******59c6464

IDO Antibody #12006

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Inquiry Info. # 12006

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    Supporting Data

    REACTIVITY H
    SENSITIVITY Endogenous
    MW (kDa) 43
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    • IP-Immunoprecipitation 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:50

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    IDO Antibody recognizes endogenous levels of total IDO protein.

    Species Reactivity:

    Human

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human IDO protein. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    INDO/IDO1/indoleamine 2,3-dioxygenase (IDO) is an IFN-γ-inducible enzyme that catalyzes the rate-limiting step of tryptophan degradation (1). IDO is upregulated in many tumors and in dendritic cells in tumor-draining lymph nodes. Elevated tryptophan catabolism in these cells leads to tryptophan starvation of T cells, limiting T cell proliferation and activation (2). Therefore, IDO is considered an immunosuppresive molecule, and research studies have shown that upregulation of IDO is a mechanism of cancer immune evasion (3). The gastrointestinal stromal tumor drug, imatinib, was found to act, in part, by reducing IDO expression, resulting in increased CD8+ T cell activation and induction of apoptosis in regulatory T cells (4). In addition to its enzymatic activity, IDO was recently shown to have signaling capability through an immunoreceptor tyrosine-based inhibitory motif (ITIM) that is phosphorylated by Fyn in response to TGF-β. This leads to recruitment of SHP-1 and activation of the noncanonical NF-κB pathway (5).
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