Recovery of infectious foot-and-mouth disease virus from full-length genomic cDNA clones using an RNA polymerase I system
文献类型: 外文期刊
第一作者: Chang, Yanyan
作者: Chang, Yanyan;Zheng, Haixue;Shang, Youjun;Jin, Ye;Wang, Guangxiang;Shen, Xiaoyan;Liu, Xiangtao
作者机构:
关键词: foot-and-mouth disease virus;RNA polI-based system;infectious cDNA clone
期刊名称:ACTA BIOCHIMICA ET BIOPHYSICA SINICA ( 影响因子:3.848; 五年影响因子:3.67 )
ISSN: 1672-9145
年卷期: 2009 年 41 卷 12 期
页码:
收录情况: SCI
摘要: The prototypic foot-and-mouth disease virus (FMDV) was shown more than a century ago to be the first filterable agent capable of causing FMD, and it has served as an important model for studying basic principles of Aphthovirus molecular biology. However, the complex structure and antigenic diversity of FMDV have posed a major obstacle to the attempts at manipulating the infectious virus by reverse genetic techniques. Here, we report the recovery of infectious FMDV from cDNAs based on an efficient in vivo RNA polymerase (pol) transcription system. Intracellular transcription of the full-length viral genome from pol-based vectors resulted in efficient formation of infectious virus displaying a genetic marker. Compared with wild-type virus, an abundance of genomic mRNA and elevated expression levels of viral antigens were indicative of the hyperfunction throughout the life-cycle of this cDNA-derived virus at transcription, replication, and translation levels. The technology described here could be an extremely valuable molecular biology tool for studying FMDV complex infectious characteristics. It is an operating platform for studying FMDV functional genomics, molecular mechanism of pathogenicity and variation, and lays a solid foundation for the development of viral chimeras toward the prospect of a genetically engineered vaccine.
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