New insights into the immunological changes in IL-10-deficient mice during the course of spontaneous inflammation in the gut mucosa.

New insights into the immunological changes in IL-10-deficient mice during the course of spontaneous inflammation in the gut mucosa.
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DOI:
10.1155/2012/560817
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发表时间:
2012
影响因子:
--
通讯作者:
Faria AM
Faria AM
中科院分区:
其他
文献类型:
--
作者:
Gomes-Santos AC;Moreira TG;Castro-Junior AB;Horta BC;Lemos L;Cruz DN;Guimarães MA;Cara DC;McCafferty DM;Faria AM

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IL-10是一种调节性细胞因子,在肠道的稳态中起着重要作用,这一点可以通过IL-10−/−小鼠发生自发性结肠炎的事实来说明。在这项研究中,分析了IL-10−/−小鼠在结肠炎发展过程中的免疫学变化。我们发现,在结肠中,在疾病的宏观体征之前,调节性T细胞CD 4 + CD 25 + Foxp 3+的频率降低,活化T细胞的频率升高。IL-17和IFN-γ的产生在结肠中较高。结肠炎的进展随着肠道中CD 4 + CD 4+调节性T细胞的减少而达到高潮。B1细胞的频率和分泌型伊加的产生均增加。尽管有这些变化,16周龄的IL-10−/−小鼠可以通过连续喂养方案耐受。我们的研究提供了结肠炎之前的变化的详细分析,它也表明口服耐受性可用于设计新的替代疗法的疾病。
IL-10 is a regulatory cytokine that plays a major role in the homeostasis of the gut and this is illustrated by the fact that IL-10−/− mice develop spontaneous colitis. In this study, IL-10−/− mice were analyzed for immunological changes during colitis development. We found a reduced frequency of regulatory T cells CD4+CD25+Foxp3+ and higher frequency of activated T cells in the colon that precedes the macroscopic signs of the disease. Production of IL-17 and IFN-γ was higher in the colon. Colitis progression culminates with the reduction of CD4+LAP+ regulatory T cells in the intestine. Frequency of B1 cells and the secretory IgA production were both elevated. Despite these alterations, 16-week-old IL-10−/− mice could be rendered tolerant by a continuous feeding protocol. Our study provides detailed analysis of changes that precede colitis and it also suggests that oral tolerance could be used to design novel alternative therapies for the disease.
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