IFN-λ suppresses intestinal inflammation by non-translational regulation of neutrophil function.

IFN-λ suppresses intestinal inflammation by non-translational regulation of neutrophil function.
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DOI:
10.1038/ni.3821
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发表时间:
2017-10
期刊:
影响因子:
30.5
通讯作者:
Zanoni I
Zanoni I
中科院分区:
医学1区
文献类型:
--
作者:
Broggi A;Tan Y;Granucci F;Zanoni I

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干扰素-λ(IFN-λ)是粘膜免疫的中心调节剂;然而,其相对于I型干扰素的信号传导特异性不明确。干扰素-λ可以诱导上皮细胞中的抗病毒干扰素刺激基因(ISG),而干扰素-λ在非上皮细胞中的作用尚不清楚。在这里,我们报告中性粒细胞对IFN-λ的反应。我们发现,除了诱导ISG转录外,IFN-λ(而不是IFN-β)特异性激活了一种非依赖于免疫反应的信号通路,该通路减少了中性粒细胞中活性氧的产生和脱粒。在小鼠中,IFN-λ由肠道病毒引起并作用于中性粒细胞以减少氧化应激和肠道损伤。因此,IFN-λ作为一种独特的免疫调节剂,通过修饰转录和非翻译的中性粒细胞反应,这可能允许控制炎症过程的发展。
Interferon-λ (IFN-λ) is a central regulator of mucosal immunity; however, its signaling specificity relative to that of type I interferons is poorly defined. IFN-λ can induce antiviral interferon-stimulated genes (ISGs) in epithelia, while the effect of IFN-λ in non-epithelial cells remains unclear. Here we report that neutrophils responded to IFN-λ. We found that in addition to inducing ISG transcription, IFN-λ (but not IFN-β) specifically activated a translation-independent signaling pathway that diminished the production of reactive oxygen species and degranulation in neutrophils. In mice, IFN-λ was elicited by enteric viruses and acted on neutrophils to decrease oxidative stress and intestinal damage. Thus, IFN-λ acted as a unique immunomodulatory agent by modifying transcriptional and non-translational neutrophil responses, which might permit a controlled development of the inflammatory process.
中性粒细胞在免疫,炎症及以后的各种新型功能。
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