Description: One of the major mechanisms of cell-mediated cytotoxicity involves exocytosis of cytoplasmic granules from the effector cell toward the target cell. The granules contain a number of proteins, including the pore-forming protein perforin and a family of serine proteases called granzymes, including Granzyme B. Granzyme B is present mainly in the granules of CD8+ CTL and natural killer (NK) cells and mediates the lethal hit that kills virus infected and tumorigenic cells. Measurement of release of Granzyme B in response to the appropriate target is useful for evaluating cell-mediated cytotoxicity.
Components
Capture Antibody. Pre-titrated, purified antibody Detection Antibody. Pre-titrated, biotin-conjugated antibody Standard. Recombinant cytokine for generating standard curve and calibrating samples ELISA/ELISPOT Coating Buffer Powder. This Ready-Set-Go! ELISA Set may contain ELISA/ELISPOT Coating Buffer Powder (Reconstitute to 1L with dH20 and filter (0.22 uM)) or 10X PBS ELISA Coating Buffer (Dilute 1 part 10X Buffer into 9 parts dH20). Assay Diluent. 5X concentrated Detection enzyme. Pre-titrated Avidin-HRP Substrate Solution. Tetramethylbenzidine (TMB) Substrate Solution Certificate of Analysis. Lot-specific instructions for dilution of antibodies and standards 96 Well Plate. Corning Costar 9018 (included with product Cat. #’s ending in suffixes -22, -44, -76, -86)