Gene expression profiling of jejunal Peyer’s patches in juvenile and adult pigs

Gene expression profiling of jejunal Peyer’s patches in juvenile and adult pigs Peyer’s patches are organized lymphoid tissues of the small intestine that play a critical role in disease resistance and oral tolerance. Peyer’s patches in the jejunum contain lymphocytes, dendritic cells, macrophages, villous epithelium, and specialized follicle-associated epithelium. Little is known about the mechanisms and processes by which cells of the Peyer’s patches discriminate food nutrients and commensal microflora from pathogenic microbiota. We hypothesize that the jejunal Peyer’s patches express genes that mediate and regulate its essential functions. Expression patterns of approximately 2600 cDNAs from a porcine Peyer’s patch subtracted library were examined by microarray profiling. Individual mRNAs of interest were further examined by quantitative RT-PCR. Innate immunity-associated genes, including complement 3 and lysozyme, and the genes for epithelial chloride channel and trappin 1 were highly expressed by jejunal Peyer’s patch in both juvenile and adult pigs. The growth- and apoptosis-associated genes CIDE-B, GW112, and PSP/Reg I (pancreatic stone protein or regenerating gene) were differentially expressed in juvenile pig Peyer’s patches. Many sequences which were highly expressed in jejunal Peyer’s patches have previously been described with functions in epithelial cells. Animal-to-animal variation in basal jejunal Peyer’s patch gene expression was considerable and reflects the dynamic physiological environment of the gut in addition to genetic, epigenetic, and microbiological variation in the small intestine. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

Gene expression profiling of jejunal Peyer’s patches in juvenile and adult pigs

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer Science+Business Media Inc.
Subject
Life Sciences; Anatomy; Cell Biology; Zoology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s00335-005-0008-0
Publisher site
See Article on Publisher Site

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