Abstract
The study of epithelial barrier properties in the human body is of paramount interest to a range of disciplines, including disease modeling, drug transport studies, toxicology, developmental biology, and regenerative biology. Current day in vitro studies largely rely on growing epithelial cells in a static environment on membrane cell culture inserts. With the advancement of microfluidic and organ-on-a-chip techniques it became possible to culture 3D intestinal tubulesdirectly against an extracellular matrix (ECM) under flow and without the need for artificial membranes. Here we describe detailed protocols for culturing epithelial tubules in a high-throughput format, assessing their permeability and marker expression. The platform harbors 40 independent microfluidic chips in a microtiter plate format. The resulting 40 epithelial tubules are analyzed in parallel using a high-content microscopy. Protocols described here allow for adoption and routine application of microfluidic techniques by nonspecialized end-users.
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