Project description:Paneth cells originate in the stem cell region near the bottom of the gland and release a large number of secretory granules containing antimicrobials. The antimicrobial-rich granules are discharged into the crypt lumen and prevent microbial invasion of the crypt and defend the gland stem cells from microbial damage. We examined the global gene expression profiles in crypt IECs using the Clariom S sDNA array. We analyzed mRNA panels of antimicrobial peptides (AMPs) produced in CSN8ΔIEC and CSN8fl/fl mice.
Project description: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.
Project description: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. This dataset contains protoemics analysis of crypt comparment samples isolated by laser capture microdissection of tissue sections from FFPE duodenal gut biopsies from human subjects with and without celiac disease.
