Probing the luminal microenvironment of reconstituted epithelial microtissues
Scientific Reports2016Vol. 6(1), pp. 33148–33148
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Alec E. Cerchiari, Karen E. Samy, Michael E. Todhunter, Erica Schlesinger, Jeff Henise, Christopher Rieken, Zev J. Gartner, Tejal A. Desai
Abstract
Polymeric microparticles can serve as carriers or sensors to instruct or characterize tissue biology. However, incorporating microparticles into tissues for in vitro assays remains a challenge. We exploit three-dimensional cell-patterning technologies and directed epithelial self-organization to deliver microparticles to the lumen of reconstituted human intestinal microtissues. We also develop a novel pH-sensitive microsensor that can measure the luminal pH of reconstituted epithelial microtissues. These studies offer a novel approach for investigating luminal microenvironments and drug-delivery across epithelial barriers.
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