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Synonyms
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IL-TIF, IL-TIF alpha, IL-22a
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Species
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Murine
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Accession
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Q9JJY9
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GeneID
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50929
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Source
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重组鼠白介素-22蛋白Escherichia coli.
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Molecular Weight
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Approximately 16.6 kDa, a single non-glycosylated polypeptide chain containing 146 amino acids.
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Quantity
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2µg/10µg/1000µg
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AA Sequence
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重组鼠白介素-22蛋白LPVNTRCKLE VSNFQQPYIV NRTFMLAKEA SLADNNTDVR LIGEKLFRGV SAKDQCYLMK QVLNFTLEDV LLPQSDRFQP YMQEVVPFLT KLSNQLSSCH ISGDDQNIQK NVRRLKETVK KLGESGEIKA IGELDLLFMS LRNACV
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Purity
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> 96 % by SDS-PAGE and HPLC analyses.
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Biological Activity
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重组鼠白介素-22蛋白Fully biologically active when compared to standard. The ED50 as determined by inducing IL-10 secretion of human COLO 205 cells is less than 0.2 ng/ml, corresponding to a specific activity of > 5.0 × 106 IU/mg.
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Physical Appearance
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Sterile Filtered White lyophilized (freeze-dried) powder.
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Formulation
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Lyophilized from a 0.2 μm filtered concentrated solution in 1 × PBS, pH 7.4.
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Endotoxin
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Less than 1 EU/μg of rMuIL-22 as determined by LAL method.
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Reconstitution
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We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤ -20°C. Further dilutions should be made in appropriate buffered solutions.
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Storage
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This lyophilized preparation is stable at 2-8 °C, but should be kept at - 20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles.
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重组鼠白介素-22蛋白
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SDS-PAGE
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Reference
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1. Zeng G, Chen CY, Huang D, et al. 2011. J Immunol, 187: 190-9.
2. Cocco CandAiroldi I. 2012. Immunotherapy, 4: 668.
3. Honda K. 2012. Immunity, 37: 952-4.
4. Gurney AL. 2004. Int Immunopharmacol, 4: 669-77.
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Background
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IL-22 is belonging to IL-10 family of regulatory cytokines which includes IL-10, IL-19, IL-20, IL-22, IL-24 and IL-26. Members of this family share partial homology in their amino acid sequences, but they are dissimilar in their biological functions. Produced by T lymphocytes and dendritic cells, IL-10 contributes to the inflammatory response in vivo. IL-22 signals through CRF2-4 and IL-22. It along with IL-17 is rapidly produced by splenic LTi-like cells and can be also produced by Th17 cells. IL-22 likely plays a role in the coordinated response of both adaptive and innate immune systems. Recombinant mouse interleukin-22 contains 147 amino acids and it has approximately 81 % and 92 % amino acid sequence identity with human and rat IL-22.
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