Multiple factors including subgenomic RNAs and reduced viral protein expression are associated with a persistent infection by porcine rubulavirus (LPMV)

Multiple factors including subgenomic RNAs and reduced viral protein expression are associated... The synthesis of virus specific RNA and the expression of viral proteins in PK-15 cells persistently infected with the porcine rubulavirus LPMV have been studied at two different cell-passages following establishment of persistency (passages 25 and 65). Protein analysis of persistently infected cells and the virus particles released from these failed to demonstrate the presence of the polymerase (L) protein. A decrease in the amount of the phospho- (P) protein was also noted. The genome and mRNAs, both mono- and bicistronic, could readily be identified in the persistently infected cells with the exception of the L mRNA. By analysis of transcription gradients generated using the NIH Image analysis software, as well as analysis of the editing frequency, it was concluded that the changes in viral protein levels in persistently infected cells could be associated with a reduction in the amount of L mRNA and a shift in editing of the P gene. In addition, several large subgenomic RNAs of both the internally deleted and copy-back type were found in the persistently infected cells. The relevance of these findings to the persistent state is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Multiple factors including subgenomic RNAs and reduced viral protein expression are associated with a persistent infection by porcine rubulavirus (LPMV)

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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/s007050050300
Publisher site
See Article on Publisher Site

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