Abstract
Extracellular microRNA are one of the indicators of the functional state of cells. Culturing of Caco-2 cells under the conditions of microcirculation in a Homunculus microfluidic device allows better simulating natural environment of the body in comparison with static culturing. Impedance spectroscopy (BioClinicum Research Center) was used for non-invasive estimation of the monolayer quality and changes in the cell apical membrane due to the formation of microvilli. Under static conditions, Caco-2 cells release more microRNA from the apical membrane than under microcirculation conditions, while secretion of miR-320a, miR-24-3p, and miR-221-3p microRNA under static conditions can indicate stress of the cells and activation of inflammatory response. Under microcirculation conditions, the expression of laminin-α1 (LAMA1) was lower than under static conditions, which indicates deeper differentiation of cells.
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