1887

Abstract

In this study, an in vitro ligation method was developed to assemble a full-length infectious cDNA clone of the Zika virus (ZIKV). Four contiguous cDNA subclones covering the complete ZIKV genome were constructed with unique BglI restriction sites at the ends of each fragment. The BglI restriction sites only allow in vitro ligation to happen between interconnecting restriction sites from adjacent cDNA fragments, resulting in an intact full-length cDNA of ZIKV. RNA transcripts derived from the full-length cDNA were infectious. The recombinant virus replicated as efficiently as the wild-type virus with similar growth kinetics and plaque morphologies in Vero and C6/36 cells. Both viruses were inhibited by NITD008 treatment. This in vitro ligation method will facilitate manipulation of the viral genome through genetic modifications of four separated subclones of ZIKV for the rapid and rational development of candidate vaccines and viral replication study.

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2017-07-13
2019-10-14
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