I4269

Interleukin-4 human

IL-4, recombinant, expressed in E. coli, lyophilized powder, suitable for cell culture

• Synonyme(s) : IL-4, hIL-4
• Numéro MDL: MFCD00151705
• Code UNSPSC : 12352202
• Nomenclature NACRES : NA.77

Propriétés

• Source biologique: human
• Niveau de qualité: 200
• Produit recombinant: expressed in E. coli
• Pureté: ≥98% (SDS-PAGE)
• Forme: lyophilized powder
• Puissance: ≤0.400 ng/mL EC₅₀
• Qualité: endotoxin tested
• Poids mol.: 14.9 kDa (containing 129 amino acid residues)
• Conditionnement: pkg of 5 and 50 μg
• Technique(s): cell culture | mammalian: suitable
• Impuretés: ≤1.000 EU/μg
• Couleur: white
• Numéro d'accès UniProt: P05112
• Température de stockage: −20°C
• Informations sur le gène: human ... IL4(3565) ; mouse ... IL4(3565)

Description

Description générale

Interleukin-4 (IL-4) is a pleiotropic cytokine that regulates diverse T and B cell responses including differentiation of naive T cells into the TH2 phenotype, promoting B cell proliferation, antibody isotype switching, and expression of other TH2 cytokines including IL-5 and IL-9.^1,2 IL-4 plays a critical role in the development of allergic inflammation and asthma.³

IL-4 binds to two distinct receptors; the type I receptor, a heterodimer consisting of the IL-4Rα chain and the common gamma chain, γc, and the type II receptor, a heterodimer of IL-4Rα and IL-13Rα1.⁴

Naturally occurring IL-4 has a molecular mass of 12-20 kDa. Recombinant human IL-4 is a 14.9 kDa protein containing 129 amino acid residues. Human and mouse IL-4 share a 50% amino acid sequence homology, but their biological actions are species-specific.⁵

Application

Lymphokine with profound effects on the growth and differentiation of immunologically competent cells, inhibits VEGF-induced and βFGF-induced angiogenesis.

Forme physique

Lyophilized from a sterile filtered solution.

Remarque sur l'analyse

The biological activity is measured by the dose-dependent stimulation of the proliferation of human TF-1 cells.

Formule chimique

1. Paul, W.E., Interleukin-4: a prototypic immuno-regulatory lymphokine. Blood, 77, 1859-1870 (1991).
2. O′Garra, A., and Arai, N., The molecular basis of T helper 1 and T helper 2 cell differentiation. Trends Cell Biol., 10, 542-550 (2000).
3. Ryan, J.J. et al., Mast cell homeostasis: a fundamental aspect of allergic disease. Crit. Rev. Immunol., 27, 15-32 (2007).
4. Callard, R.E. et al., IL-4 and IL-13 receptors: are they one and the same? Immunol. Today, 17, 108-110 (1996).
5. Yokota, T. et al., Molecular biology of interleukin 4 and interleukin 5 genes and biology of their products that stimulate B cells, T cells and hemopoietic cells. Immunol. Rev., 102, 137-187 (1988).
6. Kitamura, T. et al., Establishment and characterization of a unique human cell line that proliferates dependently on GM-CSF, IL-3, or erythropoietin. J. Cell Physiol., 140, 323-334 (1989).

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable