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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

CCR6 has a non-redundant role in the development of inflammatory bowel disease.

Antigen-loaded tissues such as the intestinal mucosa must simultaneously elicit appropriate immune response to innocuous bacteria and food proteins, and to potentially harmful antigens. Impairment of the mechanisms controlling this response may mediate the excessive immune reaction that can lead to tissue destruction and inflammatory intestinal diseases, including inflammatory bowel disease. The intestinal epithelium influences local immune responses through the expression of adhesion molecules, costimulatory factors, cytokines and chemokines. CCL20, a beta-chemokine expressed in epithelia from colon and other intestinal tissue, plays a role in immune responses of intestinal mucosa, as deduced from the defects in intestinal leukocyte homeostasis shown by mice lacking CCR6, the CCL20 receptor. We studied the response of CCR6-deficient mice in two models of inflammatory bowel disease. The data show that absence of CCR6 resulted in less severe intestinal pathology in animals treated with dextran sodium sulfate. Conversely, CCR6 deficiency alters leukocyte homeostasis and the cytokine environment in the intestinal mucosa; these changes are sufficient to confer susceptibility to trinitrobenzene sulfonic acid-induced intestinal inflammation in the otherwise resistant C57BL/6J mouse strain. These results suggest that the CCR6/CCL20 axis has a critical, non-redundant role in the in vivo control of immune responses in the intestine.[1]


  1. CCR6 has a non-redundant role in the development of inflammatory bowel disease. Varona, R., Cadenas, V., Flores, J., Martínez-A, C., Márquez, G. Eur. J. Immunol. (2003) [Pubmed]
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