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Revista Española de Enfermedades Digestivas

versão impressa ISSN 1130-0108

Resumo

BERNARDO, David. Human intestinal dendritic cells as controllers of mucosal immunity. Rev. esp. enferm. dig. [online]. 2013, vol.105, n.5, pp.279-290. ISSN 1130-0108.  https://dx.doi.org/10.4321/S1130-01082013000500006.

Dendritic cells are the most potent, professional antigen-presenting cells in the body; following antigen presentation they control the type (proinflammatory/regulatory) of immune response that will take place, as well as its location. Given their high plasticity and maturation ability in response to local danger signals derived from innate immunity, dendritic cells are key actors in the connection between innate immunity and adaptive immunity responses. In the gut dendritic cells control immune tolerance mechanisms against food and/or commensal flora antigens, and are also capable of initiating an active immune response in the presence of invading pathogens. Dendritic cells are thus highly efficient in controlling the delicate balance between tolerance and immunity in an environment so rich in antigens as the gut, and any factor involving these cells may impact their function, ultimately leading to the development of bowel conditions such as celiac disease or inflammatory bowel disease. In this review we shall summarize our understanding of human intestinal dendritic cells, their ability to express and induce migration markers, the various environmental factors modulating their properties, their subsets in the gut, and the problems entailed by their study, including identification strategies, differences between humans and murine models, and phenotypical variations along the gastrointestinal tract.

Palavras-chave : Dendritic cells; Human intestine; Celiac disease; Inflammatory bowel disease; Mucosal immunology; Migration markers.

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