Viruses produced from complementary DNA of virulent and avirulent strains of swine vesicular disease viruses retain the in vivo and in vitro characteristics of the parental strain

Viruses produced from complementary DNA of virulent and avirulent strains of swine vesicular... A full-length cDNA copy of the genome of the pathogenic strain, J1’73, of swine vesicular disease virus (SVDV) was constructed and inserted into the plasmid pSVL to generate a recombinant plasmid pSVLSJ1. Infectious virus was produced following transfection of cultured mammalian cells with the plasmid. The recovered virus had the same in vitro properties as the parental strain with regard to antigenicity, plaque size on IBRS-2 cells and single-step growth. Pigs were experimentally infected with the parental virus, J1’73 strain, and viruses recovered from cells transfected with the plasmids pSVLSJ1 and pSVLS00 (Inoue T, Yamaguchi S, Saeki T, Sekiguchi K, J Gen Virol 71: 1 835–1 838 (1990)) corresponding to the pathogenic (J1’73) and non-pathogenic (H/3’76) Japanese strains of the SVDV, respectively. All pigs inoculated with the virus recovered from pSVLSJ1 produced clinical signs of similar severity to those inoculated with the parental J1’73 strain. In contrast, pigs inoculated with the virus recovered from pSVLS00 did not show any clinical signs. Viruses recovered from cells transfected with either pSVLSJ1 or pSVLS00 therefore retained the in vitro characteristics and the in vivo pathogenicity of their respective parental strains. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Viruses produced from complementary DNA of virulent and avirulent strains of swine vesicular disease viruses retain the in vivo and in vitro characteristics of the parental strain

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Publisher
Springer-Verlag
Copyright
Copyright © Wien by 1998 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050050355
Publisher site
See Article on Publisher Site

Abstract

A full-length cDNA copy of the genome of the pathogenic strain, J1’73, of swine vesicular disease virus (SVDV) was constructed and inserted into the plasmid pSVL to generate a recombinant plasmid pSVLSJ1. Infectious virus was produced following transfection of cultured mammalian cells with the plasmid. The recovered virus had the same in vitro properties as the parental strain with regard to antigenicity, plaque size on IBRS-2 cells and single-step growth. Pigs were experimentally infected with the parental virus, J1’73 strain, and viruses recovered from cells transfected with the plasmids pSVLSJ1 and pSVLS00 (Inoue T, Yamaguchi S, Saeki T, Sekiguchi K, J Gen Virol 71: 1 835–1 838 (1990)) corresponding to the pathogenic (J1’73) and non-pathogenic (H/3’76) Japanese strains of the SVDV, respectively. All pigs inoculated with the virus recovered from pSVLSJ1 produced clinical signs of similar severity to those inoculated with the parental J1’73 strain. In contrast, pigs inoculated with the virus recovered from pSVLS00 did not show any clinical signs. Viruses recovered from cells transfected with either pSVLSJ1 or pSVLS00 therefore retained the in vitro characteristics and the in vivo pathogenicity of their respective parental strains.

Journal

Archives of VirologySpringer Journals

Published: Jun 1, 1998

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