Rat IL-4 Antibody

(1 citations)   
  • Species Reactivity
    Rat
  • Specificity
    Detects rat IL-4 in direct ELISAs and Western blots. In direct ELISAs, less than 15% cross-reactivity with recombinant cotton rat IL‑4 and recombinant mouse IL-4 is observed, and less than 1% cross-reactivity with recombinant human IL‑4, recombinant canine IL-4, and recombinant porcine IL‑4 is observed.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    E. coli-derived recombinant rat IL‑4
    Cys25-Ser147
    Accession # P20096
  • 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 Rat IL‑4 (Catalog # 504-RL)
  • Neutralization
    Measured by its ability to neutralize IL‑4-induced proliferation in the rat splenocytes. The Neutralization Dose (ND50) is typically 0.05-015 µg/mL in the presence of 4 ng/mL Recombinant Rat IL‑4 and 10 µg/mL PHA.
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

Cell Proliferation Induced by IL‑4 and Neutralization by Rat IL‑4 Antibody. Recombinant Rat IL‑4 (Catalog # 504-RL) stimulates proliferation in the rat splenocytes in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Rat IL‑4 (4 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Rat IL‑4 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-504-NA). The ND50 is typically
0.05-015 µg/mL in the presence of PHA (10 µg/mL).

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: IL-4
Interleukin-4 (IL-4), also known as B cell-stimulatory factor-1, is a monomeric, approximately 13-18 kDa Th2 cytokine that shows pleiotropic effects during immune responses (1‑3). It is a glycosylated polypeptide that contains three intrachain disulfide bridges and adopts a bundled four alpha -helix structure (4). Rat IL-4 is synthesized with a 24 amino acid (aa) signal sequence. Mature rat IL-4 shares 41%, 43%, and 59% aa sequence identity with bovine, human, and mouse IL-4, respectively. Human, mouse, and rat IL-4 are species-specific in their activities (5-7). IL-4 exerts its effects through two receptor complexes (8, 9). The type I receptor, which is expressed on hematopoietic cells, is a heterodimer of the ligand binding IL-4 R alpha and the common gamma chain (a shared subunit of the receptors for IL-2, -7, -9, -15, and ‑21). The type II receptor on nonhematopoietic cells consists of IL-4 R alpha and IL-13 R alpha 1. The type II receptor also transduces IL-13 mediated signals. IL-4 is primarily expressed by Th2-biased CD4+ T cells, mast cells, basophils, and eosinophils (1, 2). It promotes cell proliferation, survival, and immunoglobulin class switch to IgG1 and IgE in rodent B cells, acquisition of the Th2 phenotype by naïve CD4+ T cells, priming and chemotaxis of mast cells, eosinophils, and basophils, and the proliferation and activation of epithelial cells (10-13). IL-4 plays a dominant role in the development of allergic inflammation and asthma (12, 14).
  • References:
    1. Benczik, M. and S.L. Gaffen (2004) Immunol. Invest. 33:109.
    2. Chomarat, P. and J. Banchereau (1998) Int. Rev. Immunol. 17:1.
    3. McKnight, A.J. et al. (1991) Eur. J. Immunol. 21:1187.
    4. Redfield, C. et al. (1991) Biochemistry 30:11029.
    5. Ramirez, F. et al. (1988) J. Immunol. Meth. 221:141.
    6. Leitenberg, D. and T.L. Feldbush (1988) Cell. Immunol. 111:451.
    7. Mosman, T.R. et al. (1987) J. Immunol. 138:1813.
    8. Mueller, T.D. et al. (2002) Biochim. Biophys. Acta 1592:237.
    9. Nelms, K. et al. (1999) Annu. Rev. Immunol. 17:701.
    10. Paludan, S.R. (1998) Scand. J. Immunol. 48:459.
    11. Corthay, A. (2006) Scand. J. Immunol. 64:93.
    12. Ryan, J.J. et al. (2007) Crit. Rev. Immunol. 27:15.
    13. Grone, A. (2002) Vet. Immunol. Immunopathol. 88:1.
    14. Rosenberg, H.F. et al. (2007) J. Allergy Clin. Immunol. 119:1303.
  • Long Name:
    Interleukin 4
  • Entrez Gene IDs:
    3565 (Human); 16189 (Mouse); 287287 (Rat); 397225 (Porcine); 280824 (Bovine); 403785 (Canine); 574281 (Primate); 100302454 (Rabbit)
  • Alternate Names:
    B cell growth factor 1; BCDF; B-cell stimulatory factor 1; BCGF1; BCGF-1; binetrakin; BSF1; BSF-1; IL4; IL-4; IL-4B_cell stimulatory factor 1; interleukin 4; interleukin-4; Lymphocyte stimulatory factor 1; MGC79402; pitrakinra
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.

1 Citations: Showing 1 - 1

  1. Endogenous expression of interleukin-4 regulates macrophage activation and confines cavity formation after traumatic spinal cord injury.
    Authors: Lee SI, Jeong SR, Kang YM
    J. Neurosci. Res., 2010;88(11):2409-19.
    Species: Rat
    Sample Type: In Vivo
    Application: In vivo
Isotype Controls
Description Application Cat# Citations Images  

Normal Goat IgG Control

Ctrl AB-108-C 191  
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Goat IgG Horseradish Peroxidase-conjugated Antibody

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Donkey Anti-Goat IgG Antibody

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Donkey Anti-Goat IgG Biotinylated Antibody

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Goat IgG VisUCyte HRP Polymer

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Goat IgG (H+L) Fluorescein-conjugated Antibody

Flow F0109 2  
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Donkey Anti-Goat IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL002
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Rabbit Anti-Goat IgG Biotinylated Antibody

WB BAF017
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Chicken Anti-Goat IgG Biotinylated Antibody

WB BAF019
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Rabbit Anti-Goat IgG (H+L) Affinity Purified PAb, X Absorbed

WB, ELISA R-401-C-ABS
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Donkey Anti-Goat IgG (H+L) PerCP-conjugated Antibody

Flow F0124
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