- Catalog number
- A00230
- Size / count
- 100 µg/Vial
- Dry ice
- No
- Hazardous
- No
- Discontinued
- No
- Background
- Interleukin-4 (IL-4), also known as a B-cell stimulatory factor1 (BSF1), is an immunomodulatory cytokine, which can inhibit the growth of tumour cells.1 The human cDNA contains a single open reading frame encoding a protein of 153 amino acids, including a putative signal peptide. IL-4 may act as an autocrine growth factor in pancreatic cancer cells and also give rise to the possibility that cancer-derived IL-4 may suppress cancer-ed immunosurveillance in vivo in addition to its growth-promoting effects, thereby facilitating pancreatic tumor growth and metastasis. The mouse and human genes and their protein products show structural and functional similarities. The human IL-4 gene, which occurs as a single copy in the haploid genome, is mapped on chromosome 5.2. The standard product used in this kit is recombinant human IL-4, consisting of 130 amino acids with the molecular mass of 14KDa.
- Synonyms
- Interleukin-4; IL-4; B-cell stimulatory factor 1; BSF-1; Binetrakin; Lymphocyte stimulatory factor 1; Pitrakinra; IL4
- Gene Name
- IL4
- Gene ID
- 3565
- UniProt
- P05112
- Host
- Rabbit
- Reactivity
- Human
- Cross Reactivity
- No cross-reactivity with other proteins.
- Immunogen
- E. coli-derived human IL4 recombinant protein (Position: H25-S153) .
- Clonality
- Polyclonal
- Tissue Specificity
- Highly expressed in metastatic colon tumors. Expressed in primary colon tumors. Weakly expressed in normal colon tissue.
- Applications
- ELISA, WB
- Field of Research
- Adaptive Immunity, Cancer, Cytokines, Immunology, Innate Immunity, Interleukins, Tumor Immunology
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
- Function
- Participates in at least several B-cell activation processes as well as of other cell types (PubMed:3016727) . It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both secretion and cell surface expression of IgE and IgG1. It also regulates the expression of the low affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Positively regulates IL31RA expression in macrophages (By similarity) .
- References & Citations
- 1. Arai, N.; Nomura, D.; Villaret, D.; DeWaal Malefijt, R.; Seiki, M.; Yoshida, M.; Minoshima, S.; Fukuyama, R.; Maekawa, M.; Kudoh, J.; Shimizu, N.; Yokota, K.; Abe, E.; Yokota, T.; Takebe, Y.; Arai, K. Complete nucleotide sequence of the chromosomal gene for human IL-4 and its expression. J. Immun. 142: 274-282, 1989. 2. Prokopchuk, O.; Liu, Y.; Henne-Bruns, D.; Kornmann, M. Interleukin-4 enhances proliferation of human pancreatic cancer cells: evidence for autocrine and paracrine actions. Br J Cancer.2005 Mar 14;92 (5) :921-8.
- Storage Conditions
- Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.
- Calculated Molecular Weight
- 36053 MW
- Observed Molecular Weight
- 20 kDa
- Specificity
- No cross reactivity with other proteins.
- Gene Name Synonym
- Interleukin 4
- Subcellular Location
- Secreted.
- Protein Name
- Glyceraldehyde-3-phosphate dehydrogenase
- Isotype
- Rabbit IgG
- Contents
- 243