CHEMICAL SIGNAL ENHANCEMENT OF DYNAMIC INTENSITY-BASED INTRACELLULAR PROTEIN- AND FLUOROPHORE-BASED REDISTRIBUTION ASSAYS FOR DRUG SCREENING

摘要

The present invention involves that adding certain dyes to the solution outside cells expressing a GFP-tagged proteins in a redistribution assay, enhance the signal. Examples of such dyes are Trypan Blue and Acid Red. This enables redistribution assays to be measured as a change in light intensity. Redistribution movement from the cytosol to the membrane, or vice versa, are illustrated. The apparatus used for measuring the redistribution is an ordinary plate reader or a FLIPRTM type instrument. It is a common feature among the dyes described that the enhancer compound has an absorption spectrum overlapping the emission spectrum of the GFP.