Recombinant Porcine Interleuki

Synonyms B-TCGF, CSIF, TGIF, IL-10, IL10A, MGC126450, MGC126451, Cytokine synthesis inhibitory factor.

Introduction IL10 is a cytokine produced primarily by monocytes and to a lesser extent by lymphocytes. This cytokine has pleiotropic effects in immunoregulation and inflammation. It down-regulates the expression of Th1 cytokines, MHC class II Ags, and costimulatory molecules on macrophages. It also enhances B cell survival, proliferation, and antibody production. This cytokine can block NF-kappa B activity, and is involved in the regulation of the JAK-STAT signaling pathway. Knockout studies in mice suggested the function of this cytokine as an essential immunoregulator in the intestinal tract.

Recombinant Porcine Interleukin-10Description Interleukin-10 Porcine Recombinant produced in E.coli is a single, glycosylated polypeptide chain containing 160 amino acids and having a molecular mass of 18458 Dalton.

The IL-10 is purified by proprietary chromatographic techniques.

Source Escherichia Coli.

Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation The protein was lyophilized with no additives.

Recombinant Porcine Interleukin-10Solubility It is recommended to reconstitute the lyophilized Interleukin 10 in sterile 18MΩ-cm H₂O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

Stability Lyophilized Interleukin-10 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL10 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.

Recombinant Porcine Interleukin-10Purity Greater than 95.0% as determined by(a) Analysis by RP-HPLC.

(b) Analysis by SDS-PAGE.

Amino acid sequence The sequence of the first five N-terminal amino acids was determined and was found to be Met-Ser-Ile-Lys-Ser.

Biological Activity The ED50 as determined by the dose-dependant stimulation of MC/9 cell which was found to be < 15ng/ml corresponding to a Specific Activity of 66,667IU/mg.

Protein content Protein quantitation was carried out by two independent methods

1. UV spectroscopy at 280 nm using the absorbency value of 0.36 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

2. Analysis by RP-HPLC, using a calibrated solution of IL-10 as a Reference Standard.

Recombinant Porcine Interleukin-10Usage CHI's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.