Michael Valley, PhD
Michael (Mike) Valley is a Senior Research Scientist in the Assay Design Group at Promega. He earned a B.S. in Chemistry from the University of Illinois and a Ph.D. in Biochemistry, Molecular Biology, and Biophysics from the University of Minnesota. He has been trained as an enzymologist, and since joining Promega in 2004, he has been applying his enzymatic skills to a variety of luminescent assays. These include reporter assays (ONE-Glo™, Renilla-Glo®, and Nano-Glo®), drug metabolism assays (MAO-Glo™), and viability assays (CellTiter-Glo® 2.0 and CellTiter-Glo® 3D). He is now working on metabolite detection assays, most recently developing a luminescent assay to measure glucose uptake by cells (Glucose Uptake-Glo™).
Donna Leippe, PhD
Dr. Donna Leippe has spent over 18 years developing technologies and leading research projects as a Senior Research Scientist in R&D at Promega. She is a member of the Assay Design group and focuses on developing bioluminescent technologies for cellular metabolism research. This has included assays for measuring cellular cofactors (NAD/NADH-Glo™ and NADP/NADPH-Glo™ Assays) and multiple cellular metabolites (Lactate-Glo™, Glucose-Glo™, Glutamate-Glo™ and Glutamine/Glutamate-Glo™ Assays). Donna joined Promega after completing her graduate and postdoctoral work at the University of Wisconsin-Madison, where she studied Viral Immunology at the Institute for Molecular Virology and the McArdle Laboratory for Cancer Research.