Intrinsic Immunity Shapes Viral Resistance of Stem Cells.

Intrinsic Immunity Shapes Viral Resistance of Stem Cells.
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固有免疫力形成干细胞的病毒抗性。

DOI:
10.1016/j.cell.2017.11.018
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发表时间:
2018-01-25
期刊:
影响因子:
64.5
通讯作者:
Rice CM
Rice CM
中科院分区:
生物学1区
文献类型:
--
作者:
Wu X;Dao Thi VL;Huang Y;Billerbeck E;Saha D;Hoffmann HH;Wang Y;Silva LAV;Sarbanes S;Sun T;Andrus L;Yu Y;Quirk C;Li M;MacDonald MR;Schneider WM;An X;Rosenberg BR;Rice CM

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干细胞与其分化的后代相比对病毒感染具有高度抵抗力;然而,其机制是神秘的。在这里,我们分析了哺乳动物干细胞和细胞在不同分化阶段的基因表达。我们发现,跨物种保守,干细胞表达一个子集的基因,以前被归类为干扰素(IFN)刺激基因(ISG),但表达是内在的,因为干细胞是难治性干扰素。这种内在的ISG表达以细胞类型特异性方式变化,并且许多ISG在分化时减少,此时细胞成为IFN-应答性的,允许通过IFN信号传导诱导广谱ISG。重要的是,我们发现内在表达的ISGs保护干细胞免受病毒感染。我们证明了内在ISG表达在病毒感染过程中保护干细胞及其分化潜能的体内重要性。这些发现对于理解干细胞生物学和病原体抗性的进化具有有趣的影响。干扰素刺激基因的内在表达使干细胞对感染具有抵抗力,在生物体的整个生命周期中保留它们的库
Stem cells are highly resistant to viral infection compared to their differentiated progeny; however, the mechanism is mysterious. Here we analyzed gene expression in mammalian stem cells and cells at various stages of differentiation. We find that, conserved across species, stem cells express a subset of genes previously classified as interferon (IFN) stimulated genes (ISGs), but that expression is intrinsic, as stem cells are refractory to interferon. This intrinsic ISG expression varies in a cell type-specific manner and many ISGs decrease upon differentiation, at which time cells become IFN-responsive, allowing induction of a broad spectrum of ISGs by IFN signaling. Importantly, we show that intrinsically expressed ISGs protect stem cells against viral infection. We demonstrate the in vivo importance of intrinsic ISG expression for protecting stem cells and their differentiation potential during viral infection. These findings have intriguing implications for understanding stem cell biology and the evolution of pathogen resistance. Intrinsic expression of interferon stimulating genes makes stem cells resistant to infections, preserving their pool throughout the organism’s lifespan
病毒逃避干扰素的十种策略。
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