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Interleukin-18 Human Recombinant ( IL 18 Human )
DescriptionInterleukin-18 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 157 amino acids and having a molecular mass of 18302 Dalton. The IL-18 is purified by proprietary chromatographic
Data sheet
| Formulation | Lyophilized from a concentrated (1mg/ml) solution in water containing 0.5x PBS pH=7.3. |
| Solubility | It is recommended to reconstitute the lyophilized Interleukin 18 in sterile 18M-cm H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions. |
| Purity | Greater than 98.0% as determined by(a) Analysis by RP-HPLC.(b) Analysis by SDS-PAGE. |
| Description | Interleukin-18 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 157 amino acids and having a molecular mass of 18302 Dalton. The IL-18 is purified by proprietary chromatographic techniques. |
| Protein Background | IL-18 is a proinflammatory cytokine. This cytokine can induce the IFN-gamma production of T cells. The combination of this cytokine and IL12 has been shown to inhibit IL4 dependent IgE and IgG1 production, and enhance IgG2a production of B cells. IL-18 binding protein (IL18BP) can specifically interact with this cytokine, and thus negatively regulate its biological activity. |
| Expression host | Escherichia Coli. |
| Synonyms | Interferon-gamma-inducing factor, IGIF, IL-1g, IL-18, IL1F4, MGC12320, IFN-gamma-inducing factor, Interleukin-1 gamma, IL-1 gamma, Iboctadekin. |
| Reagent Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. |
| Stability | Lyophilized Interleukin 18 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL18 should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles. |
| Biological Activity | The ED50 as determined by the dose-dependant stimulation of the IFN-g by human PBMC co-stimulated with IL-12 was found to be 5ng/ml corresponding to a Specific Activity of 200,000IU/mg. |
| References | 1.Title:Discovery of IL-18 As a Novel Secreted Protein Contributing to Doxorubicin Resistance by Comparative Secretome Analysis of MCF-7 and MCF-7/Dox.Publication:Yao L, Zhang Y, Chen K, Hu X, Xu LX (2011) Discovery of IL-18 As a Novel Secreted Protein Contributing to Doxorubicin Resistance by Comparative Secretome Analysis of MCF-7 and MCF-7/Dox. PLoS ONE 6(9): e24684. doi:10.1371/journal.pone.0024684Link:http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.00246842.Title: Influence of Interleukin IL-2 and IL-12 + IL-18 on Surface Expression of Immunoglobulin-Like Receptors KIR2DL1, KIR2DL2, and KIR3DL2 in Natural Killer CellsPublications: Mediators of inflammation 2006 (2006).Link: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618942/ |