Human Interleukin-10 (hIL-10) #8903
Inquiry Info. # 8903
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Product Information
Formulation
With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 20 μg BSA per 1 μg hIL-10. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2.
Storage
Stable in lyophilized state at 4°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles.
Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
Product Description
| MW (kDa) | 18 |
| Purity | >98% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hIL-10. All lots are greater than 98% pure. |
| Endotoxin | Less than 0.01 ng endotoxin/1μg hIL-10. |
| Activity | The bioactivity of recombinant hIL-10 was determined in a MC/9 cell proliferation assay. The ED50 of each lot is between 0.3-1.3 ng/ml. |
| Molecular Formula | Recombinant hIL-10 does not have a Met on the amino terminus and has a calculated MW of 18,647. DTT-reduced protein migrates as an 18 kDa polypeptide and non-reduced protein migrates as a 16 kDa polypeptide due to intramolecular cystines. The expected amino-terminal SPGQG of recombinant hIL-10 was verified by amino acid sequencing. |
Source / Purification
Recombinant human IL-10 (hIL-10) Ser19 - Asn178 (Accession # NM_000572) was produced in E. coli at Cell Signaling Technology.
Background
IL-10 is an anti-inflammatory cytokine that is produced by T cells, NK cells and macrophages (1,2). IL-10 initiates signal transduction by binding to a cell surface receptor complex consisting of IL-10 RI and IL-10 RII (1). Binding of IL-10 leads to the activation of Jak1 and Tyk2, which phosphorylates Stat-3 (1,3). The anti-inflammatory activity of IL-10 is due to its ability to block signaling through other cytokine receptors, notably IFNγ receptor, by upregulating expression of SOCS-1 (1,3). In addition, IL-10 promotes T cell tolerance by inhibiting tyrosine phosphorylation of CD28 (4,5). IL-10 is an important negative regulator of the immune response, which allows for maintenance of pregnancy (1). In contrast, increased IL-10 levels contribute to persistent Leishmania major infections (6).
- Pestka, S. et al. (2004) Immunol Rev 202, 8-32.
- Akuffo, H. et al. (1999) Clin Exp Immunol 117, 529-34.
- O'Shea, J.J. and Murray, P.J. (2008) Immunity 28, 477-87.
- Akdis, C.A. and Blaser, K. (2001) Immunology 103, 131-6.
- Akdis, C.A. et al. (2000) FASEB J 14, 1666-8.
- Von Stebut, E. (2000) Eur J Dermatol 17, 115-22.
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For Research Use Only. Not For Use In Diagnostic Procedures.
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