The AlphaLISA® immunoassay kit for human 4-1BBL enables the quantitative determination of 4-1BB ligand in buffer, cell culture media, cell supernatants, and cell lysates using a homogeneous AlphaLISA assay (no wash steps).
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AlphaLISA technology allows the detection of molecules of interest in buffer, cell culture media, serum and plasma in a highly sensitive, quantitative, reproducible and user-friendly mode. In an AlphaLISA assay, a Biotinylated Anti-Analyte Antibody binds to the Streptavidin-coated Alpha Donor beads, while another Anti-Analyte Antibody is conjugated to AlphaLISA Acceptor beads. In the presence of the analyte, the beads come into close proximity. The excitation of the Donor beads provokes the release of singlet oxygen molecules that triggers a cascade of energy transfer in the Acceptor beads, resulting in a sharp peak of light emission at 615 nm.
4-1BBL, also known as CD137L or TNFSF9, is a type II transmembrane receptor protein expressed on activated B cells, monocytes, neutrophils, and neurons. It binds to 4-1BB on activated CD4+ and CD8+ T cells. Ligation of 4-1BBL results in survival of T cells during infection. A soluble form of 4-1BBL has been shown to be cleaved from the surface of activated B cells. There are many drug targets centered on interrupting the binding of 4-1BB to 4-1BBL. These are focused on stimulating immune response to cancers.
|Assay Target Class||Protein|
|Product Brand Name||AlphaLISA|
|Shipping Condition||Blue Ice|
|Unit Size||500 Assay Points|