Use of the Dictyostelium Stalk Cell Assay to Monitor GSK-3 Regulation

GSK-3 activity mediates cAMP repression of stalk induction of cells in low-density monolayer culture. The lower the GSK-3 activity the greater the percentage of stalk cells formed. This protocol describes a robust and quantitative method utilizing an adapted stalk cell monolayer assay to measure GSK-3 activation.