Cell culture cytotoxicity testing is used as a predictor for animal toxicity. High-throughput cytotoxicity screening using ATP levels as an indicator of cell viability is the current gold standard for such predictive cytotoxicity testing. Multiplexing assay chemistries allows researchers to measure multiple parameters on a single sample in order to get a more complete picture of what is happening when cells are exposed to a treatment compound. For example multiplex assays using three protease activities as markers of viable, necrotic and apoptotic cells give researchers a tool for uncovering the mechanism of cell death when toxicity is observed and control for assay artifacts. In their book chapter, “Cytotoxicity Testing: Measuring Viable Cells, Dead Cells and Detecting Mechanism of Cell Death”, Riss, Moravec and Niles, describe protocols for in vitro toxicity testing using ATP-based assays and multiplex assays. The chapter provides protocols, an extensive materials required list, example data, and a thorough notes section describing appropriate controls, issues of assay timing, and other considerations that affect assay success. You can find it in Methods in Molecular Biology Vol. 740, Mammalian Cell Viability Methods and Protocols (Humana Press).
The following two tabs change content below.
Supervisor, Digital Marketing Program Group at Promega Corporation
Michele earned her B.A. in biology at Wesleyan College in Macon, GA, and her PhD through the BCDB Program at Emory University in Atlanta, GA where she studied cell differentiation in the model system C. elegans. She taught on the faculty of Morningside University in Sioux City, IA, and continues to mentor science writers and teachers through volunteer activities. Michele supervises the digital marketing program group at Promega, leads the social media program and manages Promega Connections blog.