The publication detail shows the title, authors (with indicators showing other profiled authors), information on the publishing organization, abstract and a link to the article in PubMed. This abstract is what is used to create the fingerprint of the publication. If any grants are referenced by the publication, they will be listed here as well.
Potentiation of Th17 cytokines in aging process contributes to the development of colitis.
Xinshou Ouyang; Zhuoshun Yang; Ruihua Zhang; Paul Arnaboldi; Geming Lu; Qingshan Li; Weidong Wang; Biao Zhang; Miao Cui; Huafeng Zhang; et al. (Profiled Author: Huafeng Zhang)
Immunology Institute, Mount Sinai School of Medicine, New York, NY 10029, United States.
Cellular immunology 2011;266(2):208-17.
Th17 cells, which produce IL-17 and IL-22, promote autoimmunity in mice and have been implicated in the pathogenesis of autoimmune/inflammatory diseases in humans. However, the Th17 immune response in the aging process is still not clear. In the present study, we found that the induction of IL-17-producing CD4(+) T cells was significantly increased in aged individuals compared with young healthy ones. The mRNA expression of IL-17, IL-17F, IL-22, and RORC2 was also significantly increased in aged people. Similar to humans, Th17 cells as well as mRNAs encoding IL-17, IL-22 and RORγt were dramatically elevated in naïve T cells from aged mouse compared to young ones. In addition, CD44 positive IL-17-producing CD4(+) T cells were significantly higher in aged mice, suggesting that memory T cells are an important source of IL-17 production. Furthermore, the percentage of IL-17-producing CD4(+) T cells generated in co-culture with dendritic cells from either aged or young mice did not show significant differences, suggesting that dendritic cells do not play a primary role in the elevation of Th17 cytokines in aged mouse cells. Importantly, transfer of CD4(+)CD45Rb(hi) cells from aged mice induced more severe colitis in RAG(-/-) mice compared to cells from young mice, Taken together, these results suggest that Th17 immune responses are elevated in aging humans and mice and may contribute to the increased development of inflammatory disorders in the elderly.
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