Recombinant Human IL-4 (CHO-expressed) Protein Summary
Product Specifications
His25-Ser153
Analysis
Product Datasheets
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
6507-IL
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein. |
| Reconstitution | Reconstitute at 100 μg/mL in PBS containing at least 0.1% human or bovine serum albumin. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
6507-IL/CF
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 100 μg/mL in PBS. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Scientific Data
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Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. The ED50 for this effect is 0.05-0.2 ng/mL.
Reconstitution Calculator
Background: IL-4
Interleukin-4 (IL-4), also known as B cell-stimulatory factor-1, is a monomeric, approximately 13 kDa ‑ 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 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 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).
- 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. 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.
Citations for Recombinant Human IL-4 (CHO-expressed) Protein
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.
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Citations: Showing 1 - 4
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Single cell analysis reveals an antiviral network that controls Zika virus infection in human dendritic cells
Authors: Moore, KM;Pelletier, AN;Lapp, S;Metz, A;Tharp, GK;Lee, M;Bhasin, SS;Bhasin, M;Sékaly, RP;Bosinger, SE;Suthar, MS;
bioRxiv : the preprint server for biology
Species: Human
Sample Types: Whole Cells
Applications: Bioassay -
Exosomes released from tumor-associated macrophages transfer miRNAs that induce a Treg/Th17 cell imbalance in epithelial ovarian cancer
Authors: J Zhou, X Li, X Wu, T Zhang, Q Zhu, X Wang, H Wang, K Wang, Y Lin, X Wang
Cancer Immunol Res, 2018-11-05;0(0):.
Species: Human
Sample Types: Whole Cells
Applications: Bioassay -
Liraglutide dictates macrophage phenotype in apolipoprotein E null mice during early atherosclerosis
Authors: R Bruen, S Curley, S Kajani, D Crean, ME O'Reilly, MB Lucitt, CG Godson, FC McGillicud, O Belton
Cardiovasc Diabetol, 2017-11-06;16(1):143.
Species: Human
Sample Types: Whole Cells
Applications: Bioassay -
Secreted ectodomain of sialic acid-binding Ig-like lectin-9 and monocyte chemoattractant protein-1 promote recovery after rat spinal cord injury by altering macrophage polarity.
Authors: Matsubara K, Matsushita Y, Sakai K, Kano F, Kondo M, Noda M, Hashimoto N, Imagama S, Ishiguro N, Suzumura A, Ueda M, Furukawa K, Yamamoto A
J Neurosci, 2015-02-11;35(6):2452-64.
Species: Rat
Sample Types: Whole Cells
Applications: Bioassay
FAQs
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Average Rating: 4.7 (Based on 3 Reviews)
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Reason for Rating: Induced Th2 T cell differentiation in stimulation cultures.
Reason for Rating: I used this to differentiate the monocytes to dendritic cells
Reason for Rating: Excellent for inducing human monocyte maturation into dendritic cells (along with GM-CSF). Cells were cultured for 6 days with IL-4 at a final concentration of 35 ng/ml.
Flow cytometric of human monocytes (left) before and after differentiation into dendritic cells (right). CD1a-CD14+ monocytes are in the upper left quadrant, whereas CD1a+CD14- dendritic cells are in the lower right quadrant.
