RNA-binding protein CPEB1 remodels host and viral RNA landscapes.

RNA-binding protein CPEB1 remodels host and viral RNA landscapes.
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DOI:
10.1038/nsmb.3310
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发表时间:
2016-12
影响因子:
16.8
通讯作者:
Yeo, Gene W.
Yeo, Gene W.
中科院分区:
生物学1区
文献类型:
--
作者:
Batra, Ranjan;Stark, Thomas J.;Clark, Elizabeth;Belzile, Jean-Philippe;Wheeler, Emily C.;Yee, Brian A.;Huang, Hui;Gelboin-Burkhart, Chelsea;Huelga, Stephanie C.;Aigner, Stefan;Roberts, Brett T.;Bos, Tomas J.;Sathe, Shashank;Donohue, John Paul;Rigo, Frank;Ares, Manuel, Jr.;Spector, Deborah H.;Yeo, Gene W.

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转录后水平的宿主和病毒相互作用对于感染至关重要,但人们仍然知之甚少。人类巨细胞病毒 (HCMV) 是一种流行的疱疹病毒家族成员,可导致免疫功能低下患者和新生儿出现严重并发症。在这里,我们进行了全面的全转录组分析,揭示了 HCMV 感染导致宿主基因中广泛的选择性剪接 (AS)、更短的 3' 非翻译区 (3'UTR) 和多聚腺苷酸尾延长。宿主RNA结合蛋白细胞质多腺苷酸化元件结合蛋白1(CPEB1)在感染后被高度诱导,并且CPEB1在未感染细胞中的异位表达再现了感染相关的转录后变化。 CPEB1 也是病毒 RNA 多聚 A 尾延长所必需的,这对有效感染很重要。引人注目的是,CPEB1 的耗竭逆转了感染相关的细胞病理学和转录后变化,并降低了 HCMV 滴度。单纯疱疹病毒 2 (HSV-2) 感染细胞中的宿主 RNA 处理也发生了改变,这表明疱疹病毒感染的一个共同主题。我们的工作是疱疹病毒感染中宿主 RNA 结合蛋白治疗靶向的起点。
Host and virus interactions at the post-transcriptional level are critical for infection but remain poorly understood. Human cytomegalovirus (HCMV) is a prevalent herpesvirus family member that causes severe complications in immunocompromised patients and newborns. Here, we perform comprehensive transcriptome-wide analyses revealing that HCMV infection results in widespread alternative splicing (AS), shorter 3′-untranslated regions (3′UTRs) and polyA tail lengthening in host genes. The host RNA binding protein cytoplasmic polyadenylation element binding protein 1 (CPEB1) is highly induced upon infection and ectopic expression of CPEB1 in non-infected cells recapitulates infection-related post-transcriptional changes. CPEB1 is also required for polyA-tail lengthening of viral RNAs important for productive infection. Strikingly, depletion of CPEB1 reverses infection-related cytopathology and post-transcriptional changes, and decreases productive HCMV titers. Host RNA processing is also altered in herpes simplex virus-2 (HSV-2) infected cells, indicating a common theme among herpesvirus infections. Our work is a starting point for therapeutic targeting of host RNA binding proteins in herpesvirus infections.
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