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Expression of interleukin-10 in intestinal lymphocytes detected by an interleukin-10 reporter knockin tiger mouse.

Authors
  • Kamanaka, Masahito
  • Kim, Sean T
  • Wan, Yisong Y
  • Sutterwala, Fayyaz S
  • Lara-Tejero, Maria
  • Galán, Jorge E
  • Harhaj, Ed
  • Flavell, Richard A
Type
Published Article
Journal
Immunity
Publisher
Elsevier
Publication Date
Dec 01, 2006
Volume
25
Issue
6
Pages
941–952
Identifiers
PMID: 17137799
Source
Medline
License
Unknown

Abstract

To identify interleukin-10 (IL-10)-producing cells in vivo, we generated a knockin mouse where an internal ribosome entry site (IRES) green fluorescence protein (GFP) element was inserted immediately before the polyadenylation site of the IL-10 gene. GFP fluorescence in cells from these mice was found to correlate positively with IL-10 protein expression. With this model, we found that after multiple T cell receptor (TCR) stimulations, strong expression of IL-10 was produced specifically by intraepithelial lymphocytes (IEL) in the small intestine and colonic lamina propria lymphocytes (cLPL). We found that anti-CD3 treatment induces T regulatory cell 1 (Tr1)-like cells in small intestinal IEL (sIEL) and led to the accumulation of naturally occurring regulatory T (nTreg) cells in colonic LPL (cLPL). These findings highlight the intestine as a unique site for induction of IL-10-producing T cells, which play a critical role in the regulation of inflammation in the gut.

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