Nat neuroscience:AHR是寨卡病毒的宿主因子并且是抗病毒治疗的候选靶点

2020-07-26 MedSci原创 MedSci原创

寨卡病毒(Zika Virus,ZIKV)是一种与包括小头畸形在内的多个出生缺陷相关的黄病毒,被称为先天性ZIKV综合征。

鉴定ZIKV复制过程中的宿主因子可指导有效的治疗干预。在基因组范围内的转录研究中,作者发现ZIKV感染触发了芳香烃受体(AHR)的激活.特别是,ZIKV感染诱导了Kynurenine(Kyn)的产生,激活了AHR,限制了参与抗病毒免疫的Ⅰ型干扰素(IFN-I)的产生。人群中的个体对病毒感染和病毒引起的病理表现出不同程度的易感性,但其机制尚不清楚。环境因素,如污染物、饮食和微生物群,影响包括ZIKV在内的多种病毒感染的过程和临床结果。AHR激动剂不仅由宿主代谢产生,而且还由环境污染物、饮食和共生菌群提供。

方法:为了确定ZIKV复制的分子机制, 利用RNA-序列分析(RNA-seq)信使RNA在感染ZIKV的人肝源性HepG 2细胞中的表达。 检测到179个与细胞过程相关的差异表达基因。通过转录因子AHR检测了ZIKV感染对信号转导的影响。通过分析公共数据库中的rna-seq数据,进一步验证了这些观察的正确性,这些数据检测到zIKV感染的人脑器官中存在上调的aHR信号。

结果:AHR是一种ZIKV宿主因子,干扰IFN-I驱动和PML蛋白依赖的抗病毒免疫。这些发现将AHR确定为ZIKV和其他黄病毒的候选治疗靶点。

原文出处:Giovannoni, F., Bosch, I., Polonio, C.M. et al. AHR is a Zika virus host factor and a candidate target for antiviral therapyNat Neurosci(2020). https://doi.org/10.1038/s41593-020-0664-0

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    2021-02-27 liye789132251
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    2020-07-28 yahu
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    2020-07-28 lsndxfj
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    2020-07-28 jichang
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    2020-07-28 wincls
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