Human CCL11/Eotaxin Antibody

(2 citations)   
  • Species Reactivity
    Human
  • Specificity
    Detects human CCL11/Eotaxin in direct ELISAs and Western blots. In direct ELISAs, less than 20% cross-reactivity with recombinant mouse (rm) CCL11/Eotaxin is observed, less than 15% cross-reactivity with recombinant human (rh) MCP‑2 and rhMCP‑3 is observed and less than 5% cross-reactivity with rhMCP-1 and rmJE is observed.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    E. coli-derived recombinant human CCL11/Eotaxin (R&D Systems, Catalog # 320-EO)
    Gly24-Pro97
    Accession # Q6I9T4
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.1 µg/mL
    Recombinant Human CCL11/Eotaxin (Catalog # 320-EO)
  • Immunohistochemistry
    5-15 µg/mL
    See below
  • Neutralization
    Measured by its ability to neutralize CCL11/Eotaxin-induced chemotaxis in the BaF3 mouse pro‑B cell line transfected with mouse CCR3. The Neutralization Dose (ND50) is typically 0.5-2.5 µg/mL in the presence of 0.01 µg/mL Recombinant Human CCL11/Eotaxin.
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
Chemotaxis Induced by CCL11/Eotaxin and Neutralization by Human CCL11/Eotaxin Antibody. Recombinant Human CCL11/Eotaxin (Catalog # 320-EO) chemoattracts the BaF3 mouse pro‑B cell line transfected with mouse CCR3 in a dose-dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (Catalog # AR002). Chemotaxis elicited by Recombinant Human CCL11/Eotaxin (0.01 µg/mL) is neutralized (green line) by increasing concentrations of Human CCL11/Eotaxin Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-320-NA). The ND50 is typically 0.5-2.5 µg/mL.
Immunohistochemistry
CCL11/Eotaxin in Human Skin. CCL11/Eotaxin was detected in immersion fixed paraffin-embedded sections of human skin using Human CCL11/Eotaxin Antigen Affinity-purified Polyclonal Antibody (Catalog # AF‑320‑NA) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: CCL11/Eotaxin

CCL11 is a potent eosinophil chemoattractant that was originally purified from bronchoalveolar lavage fluid of guinea pigs sensitized by aerosol challenge with ovalbumin. Microsequencing of the purified protein revealed the guinea pig CCL11 to be a member of the beta (CC) chemokine family of inflammatory and immunoregulatory cytokines. cDNA clones for guinea pig, mouse, and human CCL11 have been isolated. Human CCL11 cDNA encodes a 97 amino acid residue precursor protein from which the amino-terminal 23 amino acid residues are cleaved to generate the 74 amino acid residue mature human CCL11. At the protein sequence level, mature human CCL11 is approximately 60% identical to mature mouse and guinea pig CCL11. In addition, human CCL11 also shows high amino acid sequence identity to human MCP-1, 2, and 3. Human CCL11 is chemotactic for eosinophils but not mononuclear cells or neutrophils. The CC chemokine receptor 3 (CCR3) has now been identified to be a specific human CCL11 receptor. CCR3 has also been shown to serve as a cofactor for a restricted subset of primary HIV viruses and binding of CCL11 to CCR3 inhibited infection by the HIV isolates.

  • Entrez Gene IDs:
    6356 (Human); 20292 (Mouse)
  • Alternate Names:
    C-C motif chemokine 11; CCL11; chemokine (C-C motif) ligand 11; Eosinophil chemotactic protein; Eotaxin; eotaxin-1; MGC22554; SCYA11Small-inducible cytokine A11; small inducible cytokine subfamily A (Cys-Cys), member 11 (eotaxin)
Related Research Areas
Citations:

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

2 Citations: Showing 1 - 2
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Applications
Sample Type
  1. Mast cell beta-tryptase selectively cleaves eotaxin and RANTES and abrogates their eosinophil chemotactic activities.
    Authors: Pang L, Nie M, Corbett L, Sutcliffe A, Knox AJ
    J. Immunol., 2006;176(6):3788-95.
    Species: Human
    Sample Type: Recombinant Protein
    Application: WB
  2. Bleomycin stimulates lung fibroblast and epithelial cell lines to release eosinophil chemotactic activity.
    Authors: Sato E, Koyama S
    Eur. Respir. J., 2000;16(5):951-8.
    Species: Human
    Sample Type: Whole Cells
    Application: Neut
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