Bioassays designed to measure antibody-dependent cell-mediated cytotoxicity (ADCC) are particularly useful when looking to understand and characterize mechanism of action, and to quantify biologic potency and stability of target compounds during discovery and development.
However, the labor and skill required to isolate primary natural killer cells for ADCC or to maintain alternative cell lines in culture with any level of reproducibility remains problematic, with high costs in consumable reagents and in purchasing and maintaining basic equipment.
Promega has developed reporter bioassays that use activation of gene transcription through NFAT (nuclear factor of activated T-cells) as an earlier measure of ADCC. The bioassays use frozen, thaw-and-use effector and target cells and eliminates the need for cell culture maintenance. The use of frozen cells also decreases assay variability.
The ADCC Reporter Bioassay requires six-hour incubation with cells and antibody for optimal NFAT activation and luciferase expression to occur.The Tecan Infinite® 200 PRO, equipped with an external module that enables simultaneous adjustment of CO2 and O2, provides an alternative method enabling scientists without access to a cell culture facility to easily perform the bioluminescent reporter bioassay.