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). Human IL-4 is synthesized with a 24 aa signal sequence. Alternate splicing generates an isoform with a 16 aa internal deletion. Mature human IL-4 shares 55%, 39%, and 43% aa sequence identity with bovine, mouse, and rat 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 non-hematopoietic 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 IgG4 and IgE in human 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).
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Product Specifications
Immunogen
His25-Ser153
Accession # P05112
Specificity
Clonality
Host
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Endotoxin Level
Scientific Data Images for Human IL‑4 Antibody
Cell Proliferation Induced by IL‑4 and Neutralization by Human IL‑4 Antibody.
Recombinant Human IL-4 (Catalog # 204-IL) stimulates proliferation in the TF-1 human erythroleukemic cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL-4 (0.5 ng/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human IL-4 Monoclonal Antibody (Catalog # MAB204). The ND50 is typically 0.5-1.5 µg/mL.
Detection of IL-4 by Western Blot
IL-12 does not inhibit 1,25(OH)2D3 production or VDR expression and function in CD4+ T cells. Relative CYP27B1 (A), VDR (C), and CYP24A1 (E) expression in T cells activated for 72 h in the presence of 100 nM 25(OH)D3 and the indicated concentration of IL-12. Data are normalized to activated T cells incubated with 100 nM 25(OH)D3 in the absence of IL-12 (mean + SEM, n ≥ 6). (B) 1,25(OH)2D3 production in T cells activated for 72 h in the presence of 100 nM 25(OH)D3 and the indicated concentration of IL-12 (mean + SEM, n ≥ 4). (D) Representative Western blot (lower panel) and quantification (upper panel) of VDR with GAPDH as loading control from T cells activated for 72 h in the presence of 100 nM 25(OH)D3 and in the presence or absence of 10 ng/ml IL-12 (mean + SEM, n = 4). Western blots including protein ladder are shown in the Figure S1 in Supplementary Material. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/28620394), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human IL‑4 Antibody
Western Blot
Sample: Recombinant Human IL‑4 (Catalog # 204-IL)
Neutralization
Reviewed Applications
Read 2 reviews rated 4 using MAB204 in the following applications:
Formulation, Preparation, and Storage
Purification
Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
Formulation
Shipping
Stability & Storage
- 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.
Calculators
Background: IL-4
References
- Benczik, M. and S.L. Gaffen (2004) Immunol. Invest. 33:109.
- Chomarat, P. and J. Banchereau (1998) Int. Rev. Immunol. 17:1.
- Yokota, T. et al. (1986) Proc. Natl. Acad. Sci. USA 83:5894.
- Redfield, C. et al. (1991) Biochemistry 30:11029.
- Ramirez, F. et al. (1988) J. Immunol. Meth. 221:141.
- Leitenberg, D. and T.L. Feldbush (1988) Cell. Immunol. 111:451.
- Mosman, T.R. et al. (1987) J. Immunol. 138:1813.
- Mueller, T.D. et al. (2002) Biochim. Biophys. Acta 1592:237.
- Nelms, K. et al. (1999) Annu. Rev. Immunol. 17:701.
- Paludan, S.R. (1998) Scand. J. Immunol. 48:459.
- Corthay, A. (2006) Scand. J. Immunol. 64:93.
- Ryan, J.J. et al. (2007) Crit. Rev. Immunol. 27:15.
- Grone, A. (2002) Vet. Immunol. Immunopathol. 88:1.
- Rosenberg, H.F. et al. (2007) J. Allergy Clin. Immunol. 119:1303.
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Additional IL-4 Products
Product Documents for Human IL‑4 Antibody
Product Specific Notices for Human IL‑4 Antibody
For research use only
Related Research Areas
Citations for Human IL‑4 Antibody
Customer Reviews for Human IL‑4 Antibody (2)
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Customer Images
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Application: MicroarraySample Tested: EDTA PlasmaSpecies: HumanVerified Customer | Posted 12/06/2019Antibody was printed on custom arrays and incubated with fluorescently labeled human EDTA plasma
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Application: ELISASample Tested: T cellsSpecies: Human and RatVerified Customer | Posted 12/03/2017
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Protocols
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- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
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