ApoTox-Glo(TM) Triplex Assay

ApoTox-Glo Triplex Assay combines three assay chemistries to easily assess viability, cytotoxicity and apoptosis events in the same cell-based assay well. First, viability and cytotoxicity are determined by measuring two differential protease biomarkers simultaneously with the addition of a single nonlytic reagent containing two peptide substrates. The ratio of viable cells to dead cells is independent of cell number and, therefore, can be used to normalize data. A second reagent containing luminogenic DEVD-peptide substrate for caspase-3/7 and Ultra-Glo Recombinant Thermostable Luciferase is added. Caspase-3/7 cleavage of the substrate releases luciferin, which is a substrate for luciferase and generates light. The light output, measured with a luminometer, correlates with caspase-3/7 activation as a key indicator of apoptosis.