Abstract
We have shown that CCL11 (eotaxin-1), an eosinophil chemoattractant, is significantly increased in the serum of ulcerative colitis and Crohn’s disease patients vs controls and is also increased in dextran sulfate sodium (DSS)-induced murine colitis. In response to azoxymethane (AOM)-DSS, Ccl11–/– mice have significantly decreased colonic tumor number and burden, histologic injury, and colonic eosinophil infiltration vs wild-type (WT) mice. Ccl11 is expressed by isolated colonic epithelial and lamina propria immune cells. Studies in bone marrow chimera mice revealed that both hematopoietic- and epithelial-cell derived CCL11 were important for protection in the AOM-DSS model. Our aim was to assess the role of CCL11 in an injury and recovery colitis model and in an epithelial wound restitution model.
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