Construction and characterization of an infectious clone of coxsackievirus A16

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• 作者：Fei Liu (1)
  Qingwei Liu (1)
  Yicun Cai (1)
  Qibin Leng (1)
  Zhong Huang (1)
  
• 关键词：Coxsackievirus A16 ; Infectious cDNA clone ; In vitro transcription ; Recovered virus
• 刊名：Virology Journal
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：8
• 期：1
• 全文大小：539KB
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• 作者单位：Fei Liu (1)
  Qingwei Liu (1)
  Yicun Cai (1)
  Qibin Leng (1)
  Zhong Huang (1)
  
  1. Key Laboratory of Molecular Virology & Immunology, Institute Pasteur of Shanghai, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 411 Hefei Road, Shanghai, 200025, China
  
• ISSN：1743-422X

文摘

Background Coxsackievirus A16 (CVA16) is a member of the Enterovirus genus of the Picornaviridae family and it is a major etiological agent of hand, foot, and mouth disease (HFMD), which is a common illness affecting children. CVA16 possesses a single-stranded positive-sense RNA genome containing approximately 7410 bases. Current understanding of the replication, structure and virulence determinants of CVA16 is very limited, partly due to difficulties in directly manipulating its RNA genome. Results Two overlapping cDNA fragments were amplified by RT-PCR from the genome of the shzh05-1 strain of CVA16, encompassing the nucleotide regions 1-4392 and 4381-7410, respectively. These two fragments were then joined via a native XbaI site to yield a full-length cDNA. A T7 promoter and poly(A) tail were added to the 5' and 3' ends, respectively, forming a full CVA16 cDNA clone. Transfection of RD cells in vitro with RNA transcribed directly from the cDNA clone allowed the recovery of infectious virus in culture. The CVA16 virus recovered from these cultures was functionally and genetically identical to its parent strain. Conclusions We report the first construction and characterization of an infectious cDNA clone of CVA16. The availability of this infectious clone will greatly enhance future virological investigations and vaccine development for CVA16.