新方法可研究單RNA病毒的翻譯和複製動態
作者:
小柯機器人發布時間:2020/11/16 15:24:48
荷蘭烏得勒支大學醫學中心Marvin E. Tanenbaum、Frank J.M. van Kuppeveld等研究人員合作,開發出研究單RNA病毒翻譯和複製動態的新方法。相關論文於2020年11月13日在線發表於《細胞》。
研究人員開發了一種單分子成像測定法,即病毒感染實時成像(VIRIM),能夠研究活細胞中單個RNA病毒的翻譯和複製。VIRIM在細胞之間的複製動力學中發現了驚人的異質性,並揭示了單個病毒RNA的翻譯和複製之間的廣泛協調。
此外,使用VIRIM,研究人員將傳入病毒RNA的複製步驟確定為成功感染的主要瓶頸,並確定了負責抑制早期病毒複製的宿主基因。病毒感染的單分子成像是研究病毒複製和病毒-宿主相互作用的強大工具,可廣泛應用於RNA病毒。
研究人員介紹,RNA病毒是最普遍的病原體之一,也是社會的主要負擔。儘管已經對RNA病毒進行了廣泛的研究,但由於缺乏靈敏的檢測方法,因此對於感染最初幾個小時內的發生過程知之甚少。
附:英文原文
Title: Translation and Replication Dynamics of Single RNA Viruses
Author: Sanne Boersma, Huib H. Rabouw, Lucas J.M. Bruurs, Tonja Pavlovi, Arno L.W. van Vliet, Joep Beumer, Hans Clevers, Frank J.M. van Kuppeveld, Marvin E. Tanenbaum
Issue&Volume: 2020-11-13
Abstract: RNA viruses are among the most prevalent pathogens and are a major burden on society. Although RNA viruses have been studied extensively, little is known about the processes that occur during the first several hours of infection because of a lack of sensitive assays. Here we develop a single-molecule imaging assay, virus infection real-time imaging (VIRIM), to study translation and replication of individual RNA viruses in live cells. VIRIM uncovered a striking heterogeneity in replication dynamics between cells and revealed extensive coordination between translation and replication of single viral RNAs. Furthermore, using VIRIM, we identify the replication step of the incoming viral RNA as a major bottleneck of successful infection and identify host genes that are responsible for inhibition of early virus replication. Single-molecule imaging of virus infection is a powerful tool to study virus replication and virus-host interactions that may be broadly applicable to RNA viruses.
DOI: 10.1016/j.cell.2020.10.019
Source: https://www.cell.com/cell/fulltext/S0092-8674(20)31382-9
Cell:《細胞》,創刊於1974年。隸屬於細胞出版社,最新IF:36.216