ETV7 limits antiviral gene expression and control of influenza viruses.

ETV7 limits antiviral gene expression and control of influenza viruses.
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DOI:
10.1126/scisignal.abe1194
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发表时间:
2021-07-13
期刊:
影响因子:
7.3
通讯作者:
Heaton NS
Heaton NS
中科院分区:
生物学1区
文献类型:
--
作者:
Froggatt HM;Harding AT;Chaparian RR;Heaton NS

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I 型干扰素 (IFN) 反应是针对病毒感染的先天免疫反应的重要组成部分。干扰素反应的精确控制至关重要,因为干扰素刺激基因 (ISG) 表达不足可能导致无法限制病毒传播,而过度的 ISG 激活可能导致干扰素相关病变。尽管正调节因子和负调节因子都控制 IFN 信号传导的强度和持续时间,但也应理解,一些 ISG 调节 IFN 反应本身的各个方面。在这项研究中,我们进行了 CRISPR 激活筛选,以确定 I 型 IFN 反应的新调节因子。我们将编码 ETS 变体转录因子 7 (ETV7) 的强诱导 ISG 鉴定为 I 型 IFN 反应的负调节因子。然而,ETV7 并没有一致地抑制 ISG 转录。相反,ETV7 优先针对抗病毒 ISG 的子集,这些 ISG 对于 IFN 介导的流感病毒控制特别重要。总之,我们的数据将 ETV7 的功能指定为 IFN 反应调节剂,并将 ETV7 确定为潜在的治疗靶点,以增加先天抗病毒反应并增强基于 IFN 的抗病毒治疗。
The type I interferon (IFN) response is an important component of the innate immune response to viral infection. Precise control of interferon responses is critical because insufficient expression of IFN-stimulated genes (ISGs) can lead to a failure to restrict viral spread whereas excessive ISG activation can result in IFN-related pathologies. Although both positive and negative regulatory factors control the magnitude and duration of IFN signaling, it is also appreciated that several ISGs regulate aspects of the IFN response themselves. In this study, we performed a CRISPR activation screen to identify new regulators of the type I IFN response. We identified the strongly induced ISG encoding ETS variant transcription factor 7 (ETV7) as a negative regulator of the type I IFN response. However, ETV7 did not uniformly suppress ISG transcription. Instead, ETV7 preferentially targeted a subset of antiviral ISGs that were particularly important for IFN-mediated control of influenza viruses. Together, our data assign a function for ETV7 as an IFN response regulator and also identify ETV7 as a potential therapeutic target to increase innate antiviral responses and enhance IFN-based antiviral therapies.
CRISPR激活屏幕鉴定了泛avian流感病毒抑制性宿主因子。
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