Critical role of IL-25 in nematode infection-induced alterations in intestinal function.

Critical role of IL-25 in nematode infection-induced alterations in intestinal function.
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DOI:
10.4049/jimmunol.1000450
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发表时间:
2010-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Shea-Donohue T
Shea-Donohue T
中科院分区:
其他
文献类型:
--
作者:
Zhao A;Urban JF Jr;Sun R;Stiltz J;Morimoto M;Notari L;Madden KB;Yang Z;Grinchuk V;Ramalingam TR;Wynn TA;Shea-Donohue T

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白细胞介素 - 25(白细胞介素 - 17E)是白细胞介素 - 17细胞因子家族的成员。白细胞介素 - 25缺陷型小鼠在针对线虫感染的Th2免疫方面表现出受损,这表明白细胞介素 - 25是黏膜免疫的关键组成部分。胃肠道中白细胞介素 - 25的来源以及白细胞介素 - 25诱导Th2免疫的机制仍知之甚少。关于炎症期间白细胞介素 - 25的调节及其在肠道功能中的作用也几乎没有信息。在当前的研究中,我们研究了巴西日圆线虫(N. brasiliensis)感染期间白细胞介素 - 25的调节以及白细胞介素 - 25对感染诱导的肠道功能改变的作用。我们发现小肠中上皮细胞而非免疫细胞是白细胞介素 - 25的主要来源。巴西日圆线虫感染诱导的白细胞介素 - 25上调依赖于信号转导及转录激活因子6(STAT6)的白细胞介素 - 13激活。白细胞介素 - 25基因敲除小鼠对巴西日圆线虫感染的肠道平滑肌和上皮反应减弱,与Th2保护性免疫受损相关。外源性白细胞介素 - 25诱导的特征性变化与线虫感染后的变化相似,但无法恢复白细胞介素 - 13基因敲除小鼠中针对巴西日圆线虫感染的受损宿主免疫。这些数据表明,白细胞介素 - 25在线虫感染诱导的肠道功能改变中起关键作用,这对宿主保护性免疫很重要,并且白细胞介素 - 13是负责白细胞介素 - 25作用的主要下游Th2细胞因子。
IL-25 (IL-17E) is a member of IL-17 cytokine family. IL-25-deficient mice exhibit impaired Th2 immunity against nematode infection, implicating IL-25 as a key component in mucosal immunity. The sources of IL-25 and mechanisms responsible for the induction of Th2 immunity by IL-25 in the gastrointestinal tract remain poorly understood. There is also little information on the regulation of IL-25 during inflammation or its role in gut function. In the current study, we investigated the regulation of IL-25 during Nippostrongyrus brasiliensis (N. brasiliensis) infection and the contribution of IL-25 to the infection-induced alterations in intestinal function. We found that epithelial cells, but not immune cells, are the major source of IL-25 in the small intestine. N. brasiliensis infection-induced up-regulation of IL-25 depends upon IL-13 activation of STAT6. IL-25−/− mice had diminished intestinal smooth muscle and epithelial responses to N. brasiliensis infection, associated with an impaired Th2 protective immunity. Exogenous IL-25 induced characteristic changes similar to those following nematode infection, but was unable to restore the impaired host immunity against N. brasiliensis infection in IL-13−/− mice. These data show that IL-25 plays a critical role in nematode infection-induced alterations in intestinal function that are important for host protective immunity, and IL-13 is the major downstream Th2 cytokine responsible for the IL-25 effects.
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发表时间: 2010-06-22
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DOI: 10.4049/jimmunol.0804299
发表时间: 2009-08-01
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Morimoto M;Zhao A;Sun R;Stiltz J;Madden KB;Mentink-Kane M;Ramalingam T;Wynn TA;Urban JF Jr;Shea-Donohue T
通讯作者: Shea-Donohue T