Spatial tissue proteomics analysis of laser capture microdisscted intestinal crypt compartment

Crypt hyperplasia is a key feature of celiac disease and various other small intestinal inflammatory conditions. By undertaking mass spectrometry-based tissue proteomics of the gut epithelial crypt zone, we found that active celiac disease is characterized by a strong interferon-γ (IFN-γ) signal. This signal, hallmarked by increased expression of MHC molecules, coincides with a markedly reduced expression of proteins associated with fatty acid metabolism. We observed similar crypt hyperplasia and proteomic alterations in wild-type mice treated with IFN-γ, but not in mice that lack the IFN-γ receptor in gut epithelial cells. IFN-γ is thus a driver of crypt hyperplasia in celiac disease by acting directly on crypt epithelial cells. This dataset contains proteomics analysis of crypt compartment samples isolated by laser capture microdissection small intestinal crypt compartment from C57/Bl6 mice injected i.p. with 0-1-2-4-6 or 9 doses interferon gamma every 8 hour.