Abstract
IBD is characterized by inflammation involving a complex interplay between innate and adaptive immunity, non-immune cells, and intestinal microbes. To understand the contributions of innate immunity to inflammation during colitis we have developed a chronic model of innate immune-mediated colitis wherein RAG1-/- mice are crossed with mice expressing TNFAIP3 in intestinal epithelial cells (villin-TNFAIP3 mice). These villin-TNFAIP3 x RAG1-/- (TRAG) mice develop early onset, 100% penetrant, chronic colitis driven by gut microbes.
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