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EK000061-EK0426: Human IL-15 ELISA Kit
Range 15.6pg/ml-1000pg/ml
Sensitivity < 3 pg/ml
Specificity: no detectable cross-reactivity with any other cytokine.
Application: for quantitive detection of human IL-15 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 (IL)-15 is a cytokine with the ability to stimulate the proliferation activity of Th1 and/or Th2 lymphocytes. IL-15 is a novel cytokine whose effects on T-cell activation and proliferation are similar to those of interleukin-2 (IL-2), presumably because IL-15 utilizes the beta and gamma chains of the IL-2 receptor.1 IL-15 can play a role in the initiation and outcome of acute and chronic rejection. Anti-IL-15 therapy in combination with classic immunosuppression therapy might thus be beneficial in the prevention of acute, and especially chronic, allograft rejection.2 The human IL15 gene is mapped to human chromosome 4q31 by fluorescence in situ hybridization.1 The standard product used in this kit is recombinant human IL-15, consisting of 114 amino acids with the molecular mass of 12.9KDa.
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. Anderson, D. M.; Johnson, L.; Glaccum, M. B.; Copeland, N. G.; Gilbert, D. J.; Jenkins, N. A.; Valentine, V.; Kirstein, M. N.; Shapiro, D. N.; Morris, S. W.; Grabstein, K.; Cosman, D. Chromosomal assignment and genomic structure of IL15. Genomics 25: 701-706, 1995.
2. Conti F, Frappier J, Dharancy S, Chereau C, Houssin D, Weill B, Calmus Y. Interleukin-15 production during liver allograft rejection in humans. Transplantation. 2003 Jul 15;76(1):210-6.
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