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S100A9 (D3U8M) Rabbit mAb #73425

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  • WB
  • IP
  • IHC
  • IF
  • F

    Supporting Data

    REACTIVITY M R
    SENSITIVITY Endogenous
    MW (kDa) 14
    Source/Isotype Rabbit IgG
    Application Key:
    • WB-Western Blotting 
    • IP-Immunoprecipitation 
    • IHC-Immunohistochemistry 
    • IF-Immunofluorescence 
    • F-Flow Cytometry 
    Species Cross-Reactivity Key:
    • M-Mouse 
    • R-Rat 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:50
    IHC Leica Bond 1:800
    Immunohistochemistry (Paraffin) 1:800
    Immunofluorescence (Frozen) 1:100
    Flow Cytometry (Fixed/Permeabilized) 1:100

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

    For a carrier free (BSA and azide free) version of this product see product #74641.

    Protocol

    Specificity / Sensitivity

    S100A9 (D3U8M) Rabbit mAb recognizes endogenous levels of total S100A9 protein.

    Species Reactivity:

    Mouse, Rat

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asn98 of mouse S100A9 protein.

    Background

    S100A8 and S100A9 are calcium-binding proteins that form a noncovalent heterodimer present in monocytes, neutrophils, macrophages, and some epithelial cells (1,2). S100A8 and S100A9 are secreted by a tubulin-dependent mechanism during inflammatory conditions and have antimicrobial and chemotactic functions (3-5). Extracellular S100A8/S100A9 also induces an inflammatory response in endothelial cells, including induction of proinflammatory chemokines and adhesion molecules and increased vascular permeability (6). S100A8/S100A9 induces and recruits myeloid-derived suppressor cells (MDSC) in tumor-bearing mice (7). MDSC produce additional S100A8/S100A9 themselves, resulting in a positive feedback mechanism that sustains MDSC accumulation (7). S100A8/S100A9 is also highly expressed in psoriatic skin, where it directly upregulates transcription of complement protein C3, which contributes to disease (8). In addition, tumor-infiltrating myeloid cells induce expression of S100A8 and S100A9 in cancer cells, which increases invasiveness and metastasis (9).

    Alternate Names

    autostainer; Bond; calprotectin; Leica; Rx; S100A8; S100A9

    For Research Use Only. Not for Use in Diagnostic Procedures.
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