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Endocytosis and recycling of tight junction proteins in inflammation Utech M; Mennigen R; Bruewer MJ Biomed Biotechnol 2010[]; 2010 (ä): 484987A critical function of the epithelial lining is to form a barrier that separates luminal contents from the underlying interstitium. This barrier function is primarily regulated by the apical junctional complex (AJC) consisting of tight junctions (TJs) and adherens junctions (AJs) and is compromised under inflammatory conditions. In intestinal epithelial cells, proinflammatory cytokines, for example, interferon-gamma (IFN-gamma), induce internalization of TJ proteins by endocytosis. Endocytosed TJ proteins are passed into early and recycling endosomes, suggesting the involvement of recycling of internalized TJ proteins. This review summarizes mechanisms by which TJ proteins under inflammatory conditions are internalized in intestinal epithelial cells and point out comparable mechanism in nonintestinal epithelial cells.|Animals[MESH]|Endocytosis/*physiology[MESH]|Humans[MESH]|Inflammation/*metabolism[MESH]|Intestinal Mucosa/cytology/metabolism[MESH]|Membrane Proteins/*metabolism[MESH]|Tight Junctions/*metabolism[MESH] |
