ICOS ELISA Kit (Human)

ELISA Kit

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ICOS

199

Enhances all basic T-cell responses to a foreign antigen, namely proliferation, secretion of lymphokines, up-regulation of molecules that mediate cell-cell interaction, and effective help for antibody secretion by B-cells. Essential both for efficient interaction between T and B-cells and for normal antibody responses to T-cell dependent antigens. Does not up-regulate the production of interleukin-2, but superinduces the synthesis of interleukin-10. Prevents the apoptosis of pre-activated T-cells. Plays a critical role in CD40-mediated class switching of immunoglobin isotypes (By similarity).

NP_036224

This assay has high sensitivity and excellent specificity for detection of Inducible T-Cell Co Stimulator (ICOS).No significant cross-reactivity or interference between Inducible T-Cell Co Stimulator (ICOS) and analogues was observed.

Component: Amount
Anti-ICOS Microplate: 96 Wells (12 x 8 Well Strips)
ICOS Lyophilized Standard: 2 x 1 ng
100X Biotinylated ICOS Detector Antibody: 120 uL
Avidin/HRP Conjugate: 120 uL
Standard Diluent: 1 x 20 mL
Detector Antibody Diluent: 1 x 12 mL
Conjugate Diluent: 1 x 12 mL
30X Wash Buffer: 1 x 20 mL
TMB Substrate: 1 x 9 mL
Stop Solution: 1 x 6 mL

3h

The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Inducible T-Cell Co Stimulator (ICOS). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Inducible T-Cell Co Stimulator (ICOS). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Inducible T-Cell Co Stimulator (ICOS), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm +/- 10nm. The concentration of Inducible T-Cell Co Stimulator (ICOS) in the samples is then determined by comparing the O.D. of the samples to the standard curve.

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Inducible T-Cell Co Stimulator (ICOS) were tested 20 times on one plate, respectively. Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Inducible T-Cell Co Stimulator (ICOS) were tested on 3 different plates, 8 replicates in each plate. CV(%) = SD/meanX100 Intra-Assay: CV<10% Inter-Assay: CV<12%