The AlphaLISA® immunoassay kit for human CD28 enables the quantitative determination of human CD28 in buffered solution and cell culture supernatants using a homogeneous AlphaLISA assay (no wash steps).
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|Part Number||Unit Size||List Price||Your Price||Quantity|
|AL3044HV||100 Assay Points||600.00 USD|
|AL3044C||500 Assay Points||1800.00 USD|
|AL3044F||5,000 Assay Points||14400.00 USD|
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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.
CD28 (Cluster of Differentiation 28) is one of the proteins expressed on T cells that provide co-stimulatory signals required for T cell activation and survival. T cell stimulation through CD28 in addition to the T-cell receptor (TCR) can provide a potent signal for the production of various interleukins (IL-6 in particular). CD28 is the receptor for CD80 (B7.1) and CD86 (B7.2) proteins. When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs) and the CD86 expression on antigen presenting cells is constitutive. CD28 is involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival. In healthy subjects, soluble CD28 levels in plasma are about 0.8 ng/mL.
Disclaimer: For research use only. Not for use in diagnostic procedures.
|Assay Target Class||Protein|
|Product Brand Name||AlphaLISA|
|Shipping Condition||Blue Ice|
|Unit Size||5,000 Assay Points|
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|Resource Type||File Name||File Format|
|Brochure||Alpha product listing||PDF 124 KB|
|Application Note||Development of an AlphaLISA Assay for Screening Inhibitors of the TIM-3/Gal-9 Interaction||PDF 3 MB|
|Application Note||Protocol Optimization for Detection and Quantification of Membrane-Bound Proteins Using AlphaLISA Te||PDF 2 MB|
|Application Note||Quantifying Changes in CD28 and CTLA-4 Levels in Peripheral Blood Mononuclear Cells with AlphaLISA||PDF 1 MB|
|Application Note||Utilizing AlphaLISA Technology to Screen for Inhibitors of the CTLA-4 Immune Checkpoint||PDF 1 MB|
|Technical Note||AlphaLISA Assays for Immune Checkpoint Detection and Quantitation||PDF 532 KB|