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EK000011-EK0416: Human IL-10 ELISA Kit
Range 7.8pg/ml-500pg/ml (body fluids, tissue lysates or cell culture supernates) 3.4pg/ml-250pg/ml
(human sera, plasma).
Sensitivity < 0.5 pg/ml
Specificity: no detectable cross-reactivity with any other cytokine.
Application: for quantitive detection of human IL-10 in sera, plasma, body fluids, tissue lysates or cell culture supernates.
Expiration: four months at 4°C and eight months at -20°C.
Background
Interleukin-10, also called cytokine synthesis inhibitory factor, is implicated in tumorigenesis, and it has been shown that polymorphisms in its gene promoter correlate with differential amounts of production.1 IL-10 is an important cytokine with anti-inflammatory, anti-immune, and antifibrotic functions.2 It is also an important regulatory cytokine whose involvement extends into diverse areas of the human immune system.3 IL-10 is a recently described natural endogenous immunosuppressive cytokine that has been identified in human, murine, and other organisms. IL-10 significantly affects chemokine biology, because human IL-10 inhibits chemokine production and is a specific chemotactic factor for CD8+ T cells. It suppresses the ability of CD4+ T cells, but not CD8+ T cells, to migrate in response to IL-8.4 Interleukin-10 gene polymorphisms and interleukin-10 production capability may contribute to the development of skin squamous cell carcinomas after renal transplantation.1 The interleukin-10 locus contributes to the heritability of psoriasis susceptibility.5 With regard to sudden infant death, IL-10 is of special interest. This is an immunoregulatory cytokine that plays an important role in the development of infectious disease.6 The mIL-10 gene is mapped to mouse chromosome 1 and the hIL-10 gene is also mapped to human chromosome 1.7 The standard product used in this kit is recombinant human IL-10, consisting of 160 amino acids with the molecular mass of 18.6KDa.
Principle
The ELISA Kit is based on standard sandwich enzyme-linked immune-sorbent assay technology. The target specific antibodies are precoated onto 96-well plates. The target from the sample is bound to the microwell. The biotinylated target specific detection antibodies are added to the microwells and followed by washing with the PBS or TBS buffer. Avidin-Biotin-Peroxidase Complex is added and unbound conjugates are washed away with the PBS or TBS buffer. TMB, the HRP (horseradish peroxidase) substrate, is used to visualize color change resulting from the HRP enzymatic reaction. TMB is catalyzed by HRP to produce the blue color. The color changes into yellow after the acidic stop solution is added. The density of the yellow color is proportional to the target amount from the sample captured in the microwells.
Reference
1. Alamartine, E.; Berthoux, P.; Mariat, C.; Cambazard, F.; Berthoux, F. Interleukin-10 promoter polymorphisms and susceptibility to skin squamous cell carcinoma after renal transplantation. J. Invest. Derm. 120: 99-103, 2003.
2. Grove, J.; Daly, A. K.; Bassendine, M. F.; Gilvarry, E.; Day, C. P. Interleukin 10 promoter region polymorphisms and susceptibility to advanced alcoholic liver disease. Gut 46: 540-545, 2000.
3. Eskdale, J.; Kube, D.; Tesch, H.; Gallagher, G. Mapping of the human IL10 gene and further characterization of the 5-prime flanking sequence. Immunogenetics 46: 120-128, 1997.
4. Gesser, B.; Leffers, H.; Jinquan, T.; Vestergaard, C.; Kirstein, N.; Sindet-Pedersen, S.; Jensen, S. L.; Thestrup-Pedersen, K.; Larsen, C. G. Identification of functional domains on human interleukin 10. Proc. Nat. Acad. Sci. 94: 14620-14625, 1997.
5. Asadullah, K.; Eskdale, J.; Wiese, A.; Gallagher, G.; Friedrich, M.; Sterry, W. Interleukin-10 promoter polymorphism in psoriasis. J. Invest. Derm. 116: 975-978, 2001.
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