High-Content Analysis of Cell Migration Dynamics within a Micropatterned Screening Platform.

Cell migration is a fundamental biological process that is dynamically regulated by complex interactions between the microenvironment and intrinsic gene expression programs. Here, a high-throughput cell migration assay is developed using micropatterned and dynamically adhesive polymer brush substrates, which support highly precise and consistent control over cell-matrix interactions within a 96-well cell culture plate format. This system is combined with automated imaging and quantitation of both cell motility and organization of the F-actin cytoskeleton for high-content analysis of cell migration phenotypes. Using this platform to screen a library of 147 epigenetic inhibitors identifies a set of EZH2-specific compounds that promote cytoskeletal remodeling and accelerates keratinocyte migration through derepression of an epithelial to mesenchymal transition-like gene expression program. Together, these studies establish the high-throughput, micropatterned assay as a powerful tool for discovery of novel therapeutic targets and for dissecting complex gene-environment interactions involved in wound repair.