Human IL-13 APC-conjugated Antibody

  • Species Reactivity
  • Specificity
    Detects human IL-13 in flow cytometry.
  • Source
    Monoclonal Mouse IgG1 Clone # 32007
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    E. coli-derived recombinant human IL-13
    Accession # P35225
  • Formulation
    Supplied in a saline solution containing BSA and Sodium Azide.
  • Label
  • Intracellular Staining by Flow Cytometry
    10 µL/106 cells
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Intracellular Staining by Flow Cytometry
Detection of IL‑13 in NS0 Mouse Cell Line Transfected with Human IL-13 by Flow Cytometry. NS0 mouse myeloma cell line transfected with human IL-13 was stained with Mouse Anti-Human IL‑13 APC‑conjugated Monoclonal Antibody (Catalog # IC2131A, filled histogram) or isotype control antibody (Catalog # IC002A, open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.
Preparation and Storage
  • Shipping
    The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
  • Stability & Storage
    Protect from light. Do not freeze.
    • 12 months from date of receipt, 2 to 8 °C as supplied.
Background: IL-13

IL-13 is a 17 kDa immunoregulatory cytokine that plays a key role in the pathogenesis of allergic asthma and atopy. It is secreted by Th1 and Th2 CD4+ T cells, NK cells, visceral smooth muscle cells, eosinophils, mast cells, and basophils (1-3). IL-13 circulates as a monomer with two internal disulfide bonds that contribute to a bundled four alpha -helix configuration (4, 5). Mature human IL-13 shares 57%, 59%, and 94% amino acid sequence identity with mouse, rat, and rhesus macaque IL-13, respectively. Despite the low homology, it exhibits cross-species activity between human, mouse, and rat (6, 7). IL-13 has diverse activities on numerous cell types (8). On macrophages, IL-13 suppresses the production of pro-inflammatory cytokines and other cytotoxic substances. On B cells, IL-13 induces immunoglobulin class switching to IgE, upregulates the expression of MHC class II, CD71, CD72, and CD23, and costimulates proliferation. IL-13 upregulates IL-6 while downregulating IL-1 and TNF-alpha production by fibroblasts and endothelial cells. IL-13 binds with low affinity to IL-13 R alpha 1, triggering IL-13 R alpha 1 association with IL-4 R alpha. This high affinity receptor complex also functions as the type 2 IL-4 receptor complex (9, 10). Additionally, IL-13 binds with high affinity to IL-13 R alpha 2 which is expressed intracellularly, on the cell surface, and as a soluble molecule (11-14). IL-13 R alpha 2 regulates the bioavailability of both IL-13 and IL-4 and is over-expressed in glioma and several bronchial pathologies (10, 15, 16). Compared to wild type IL-13, the atopy-associated R110Q variant of IL-13 elicits increased responsiveness from eosinophils that express low levels of IL-13 R alpha 2 (17).

  • References:
    1. Wills-Karp, M. (2004) Immunol. Rev. 202:175.
    2. Nakajima H. and K. Takatsu (2007) Int. Arch. Allergy Immunol. 142:265.
    3. McKenzie, A.N. et al. (1993) Proc. Natl. Acad. Sci. USA 90:3735.
    4. Moy, F.J. et al. (2001) J. Mol. Biol. 310:219.
    5. Eisenmesser, E.Z. et al. (2001) J. Mol. Biol. 310:231.
    6. Ruetten, H. and C. Thiemermann (1997) Shock 8:409.
    7. Lakkis, F.G. et al. (1997) Biochem. Biophys. Res. Commun. 235:529.
    8. Wynn, T.A. (2003) Annu. Rev. Immunol. 21:425.
    9. Andrews, A.L. et al. (2002) J. Biol. Chem. 277:46073.
    10. Tabata, Y. et al. (2007) Curr. Allergy Asthma Rep. 7:338.
    11. Chiaramonte, M.G. et al. (2003) J. Exp. Med. 197:687.
    12. Daines, M.O. and G.K. Hershey (2002) J. Biol. Chem. 227:10387.
    13. Matsumura, M. et al. (2007) Biochem. Biophys. Res. Commun. 360:464.
    14. Tabata, Y. et al. (2007) J. Immunol. 177:7905.
    15. Andrews, A.L. et al. (2006) J. Allergy Clin. Immunol. 118:858.
    16. Joshi, B.H. et al. (2006) Vitam. Horm. 74:479.
    17. Andrews, A-L. et al. (2007) J. Allergy Clin. Immunol. 120:91.
  • Long Name:
    Interleukin 13
  • Entrez Gene IDs:
    3596 (Human); 16163 (Mouse); 116553 (Rat); 574325 (Primate)
  • Alternate Names:
    ALRHMGC116789; BHR1interleukin-13; IL13; IL-13MGC116788; interleukin 13; MGC116786; NC30; P600
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG1 APC-conjugated Antibody

Ctrl IC002A 5  
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Staining Reagents
Description Application Cat# Citations Images  

Flow Cytometry Permeabilization/Wash Buffer I (1X)

Flow FC005 4
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Flow Cytometry Fixation Buffer (1X)

Flow FC004 3
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Flow Cytometry Fixation & Permeabilization Buffer Kit I

Flow FC009
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Flow Cytometry Fixation/Permeabilization Buffer I (1X)

Flow FC007
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