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Published in: Archives of Virology 10/2014

01-10-2014 | Original Article

Comparison of the replication characteristics of vaccinia virus strains Guang 9 and Tian Tan in vivo and in vitro

Authors: Rong Zhu, Qiang Liu, Weijin Huang, Yongxin Yu, Youchun Wang

Published in: Archives of Virology | Issue 10/2014

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Abstract

Vaccinia virus is widely used as a vector in the development of recombinant vaccines. Vaccinia virus strain Guang 9 (VG9), which was derived from vaccinia virus strain Tian Tan (VTT) by successive plaque-cloning purification, was more attenuated than VTT. In this study, the host cell range and the growth and replication of VG9 were compared with those of VTT. The results showed that both VG9 and VTT could infect permissive cells (Vero, TK-143 and CEF) and semipermissive cells PK (15) and induced a visible cytopathic effect (CPE). Both strains could infect nonpermissive CHO-K1 cells but neither was able to reproduce. The replicative ability of VG9 was a little lower than that of VTT. Additionally, recombinant vaccinia viruses containing a firefly luciferase gene (VG9-L and VTT-L) were constructed, and their expression in vitro and replication and spread in vivo were compared. The expression ability of VG9-L was lower than that of VTT-L. Whole-animal imaging data indicated that VG9-L could reproduce quickly and express the exogenous protein at the site of inoculation, regardless of whether the intramuscular, intracutaneous, subcutaneous or celiac inoculation route was used. VG9-L was better in its ability to express a foreign protein than VTT-L, but the time during which expression occurred was shorter. There was no dissemination of virus in mice inoculated with either strain. In summary, this study demonstrates the possibility of using VG9 for the production of smallpox vaccines or the construction of recombinant vaccinia virus vaccines.
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Metadata
Title
Comparison of the replication characteristics of vaccinia virus strains Guang 9 and Tian Tan in vivo and in vitro
Authors
Rong Zhu
Qiang Liu
Weijin Huang
Yongxin Yu
Youchun Wang
Publication date
01-10-2014
Publisher
Springer Vienna
Published in
Archives of Virology / Issue 10/2014
Print ISSN: 0304-8608
Electronic ISSN: 1432-8798
DOI
https://doi.org/10.1007/s00705-014-2079-2

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