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Accession IconGSE32513

Identification of the core gene-regulatory network that governs the dynamic adaptation of intestinal homeostasis during conventionalization in mice

Organism Icon Mus musculus
Sample Icon 144 Downloadable Samples
Technology Badge Icon Affymetrix Mouse Gene 1.1 ST Array (mogene11st)

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Molecular adaptation of the intestinal mucosa occurs during microbial conventionalization to maintain a balanced immune response. However, the genetic regulation of such adaptation is obscure. Here, combined analysis of germ free and conventionalized mice revealed that the major molecular adaptations were initiated at day 4 of conventionalization with a strong induction of innate immune functions followed by stimulation of adaptive immune functions. We identified central regulatory genes and reconstructed a common regulatory network that appeared to be sufficient to regulate the dynamic adaptation of the intestinal mucosa to the colonizing microbiota. The majority of the genes within this regulatory network play roles in mucosal inflammatory diseases in mouse and human. We propose that the identified central regulatory network may serve as a genetic signature for control of intestinal homeostasis in healthy mice and may help to unravel the genetic basis of pathway dysregulation in human intestinal inflammatory diseases.
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