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首页> 外文期刊>Fish & Shellfish Immunology >Grass carp ATG5 and ATG12 promote autophagy but down-regulate the transcriptional expression levels of IFN-I signaling pathway
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Grass carp ATG5 and ATG12 promote autophagy but down-regulate the transcriptional expression levels of IFN-I signaling pathway

机译:草鲤ATG5和ATG12促进自噬,但下调IFN-I信号通路的转录表达水平

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摘要

Autophagy is an essential and conserved process that plays an important role in physiological homeostasis, adaptive response to stress and the immune response. Autophagy-related proteins (ATGs) are key components of the autophagic machinery. In the study, grass carp (Ctenophcayngodon idella) autophagy-related gene 5 (ATG5) and 12 (ATG12) were identified. In the gill and intestine, ATG5 and ATG12 were highly expressed, but after grass carp reovirus (GCRV) infection, they were decreased significantly. In Ctenopharyrtgodon idella kidney (CIK) cells, the sharp variation of ATG5 and ATG12 expression was observed after poly(I:C) infection. Subcellular localisation showed that ATG5 and ATG12 were evenly distributed in the cytoplasm and nucleus. However, the interaction between ATG5 and ATG12 was only found in cytoplasm in both 293T cells and CIK cells. In addition, the overexpression of ATG5 or ATG12 in 293T cells showed enhanced autophagy, and autophagic process was facilitated when ATG5 and ATG12 were simultaneously overexpressed. Dual-luciferase activity assay indicated that both ATG5 and ATG12 remarkably suppressed the promoter activity of IRF3, IRF7, and IFN-I. Further, ATG5 and ATG12 conjugate showed far stronger inhibitory affection on the expression of IFN-I than either ATG5 or ATG12 in response to poly(I:C) or GCRV infection. Taken together, the results demonstrate that grass carp ATG5 and ATG12 play an important role in innate immunity and autophagy.
机译:自噬是一种重要和保守的过程,在生理稳态,适应性对压力和免疫应答的反应中起着重要作用。与自噬相关的蛋白质(ATGs)是自噬机械的关键部件。在该研究中,鉴定了草鲤(Cteophcayngodon idella)自噬相关基因5(ATG5)和12(ATG12)。在鳃和肠中,ATG5和ATG12高度表达,但在草鲤鱼再也(GCRV)感染后,它们显着下降。在Ctenopharyrtgodon idella肾(CIK)细胞中,聚(I:C)感染后观察到ATG5和ATG12表达的急剧变化。亚细胞定位表明,ATG5和ATG12均匀分布在细胞质和核中。然而,ATG5和ATG12之间的相互作用仅在293T细胞和CIK细胞中的细胞质中发现。另外,293T细胞中的ATG5或ATG12的过表达显示出增强的自噬,当ATG5和ATG12同时过表达时促进了自噬过程。双荧光素酶活性测定表明,ATG5和ATG12显着抑制了IRF3,IRF7和IFN-1的启动子活性。此外,ATG5和ATG12缀合物对IFN-I的表达而言,响应于聚(I:C)或GCRV感染而言,IFN-I的表达更强的IFN-I或ATG12。在一起,结果表明,草鲤ATG5和ATG12在先天免疫和自噬中起重要作用。

著录项

  • 来源
    《Fish & Shellfish Immunology》 |2019年第2019期|共12页
  • 作者单位

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Wuchang Shouyi Univ Sch Urban Construct Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

    Chinese Acad Sci Inst Hydrobiol State Key Lab Freshwater Ecol &

    Biotechnol Wuhan 430072 Hubei Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 水产、渔业;
  • 关键词

    Autophagy; ATG5; ATG12; Grass carp (Ctenopharyngodon idella); IFN-I; Innate immunity;

    机译:自噬;ATG5;ATG12;草鲤鱼(Ctenopharyncodon idella);IFN-I;天生无源;

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