Abstract
Suppression of chronic intestinal inflammation by different subtypes of T cells has been described in recent years. In particular, naturally arising CD4+CD25+ regulatory T cells and IL-10-producing regulatory T cell type 1 CD4+ T lymphocytes have been implicated in the regulation of intestinal inflammation. Here we focus on the ability of CD4+CD25+ regulatory T cells to suppress innate and T-cell responses and discuss implications for immunoregulation in human inflammatory bowel disease. Besides the modulation of lymphoproliferation, a role for CD4+CD25+ T cells in down-modulation of innate immune responses is emerging and the immunoregulatory activities of regulatory T cells in vivo may be mediated via effects on dendritic cells. Considering the extraordinary regenerative potential of the intestinal mucosa, the ability to impede pathogenic T-cell responses by active regulation might be of particular therapeutic benefit for the treatment of chronic intestinal inflammatory diseases such as Crohn’s disease and ulcerative colitis.
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Abbreviations
- Tr1:
-
regulatory T cell type 1
- TR:
-
regulatory T cell
- IBD:
-
inflammatory bowel disease
- DC:
-
dendritic cell
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Acknowledgements
H.U. is supported by a University of Leipzig grant (F1-49) and F.P. by the Wellcome Trust. We would like to thank Kevin Maloy and Ana Izcue for critical reading of the manuscript.
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Uhlig, H.H., Powrie, F. The role of mucosal T lymphocytes in regulating intestinal inflammation. Springer Semin Immun 27, 167–180 (2005). https://doi.org/10.1007/s00281-005-0206-6
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DOI: https://doi.org/10.1007/s00281-005-0206-6