Detection Method:Sandwich
Test principle:This assay employs a two-site sandwich ELISA to quantitate IL-28A in samples. An antibody specific for IL-28A has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyIL-28A present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for IL-28A is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of IL-28A bound in the initial step. The color development is stopped and the intensity of the color is measured.
Product Overview:Interleukin-28 (IL-28) is a cytokine that comes in two isoforms, IL-28A and IL-28B, and plays a role in immune defense against viruses, including the induction an "antiviral state" by turning on Mx proteins, 2',5'-oligoadenylate synthetase as well as ISGF3G (Interferon Stimulated Gene Factor 3). IL-28A and IL-28B belong to the type III interferon family of cytokines and are highly similar (in amino acid sequence) to IL-29.
Interleukin-28A (IL-28A) is a novel cytokine discovered in recent years and has been shown to have antiviral activity. IL-28A, IL-28B and IL-29 are a family of class II cytokines that stimulate antiviral responses through a heterodimeric receptor that is distinct from the type I interferon (IFN) receptor.
