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Virology. 2007 Aug 1;364(2):355-61. Epub 2007 Apr 6.

Identification and functional analysis of sequence variants in the long control region and the E2 open reading frame of bovine papillomavirus type 1 isolated from equine sarcoids.

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1
Division of Pathological Sciences, Institute of Comparative Medicine, University of Glasgow Faculty of Veterinary Medicine, Bearsden Road, Glasgow, Scotland, UK. l.nasir@vet.gla.ac.uk

Abstract

BPV-1 DNA is the predominant viral type detected in equine sarcoids and represents the only reported natural cross species infection of papillomaviruses. In this study, nucleotide variations in the LCR and the E2 regions of equine sarcoid-associated BPV-1 were characterised by sequence analysis. Variants particular to sarcoid BPV-1 were identified in both the LCR and E2 sequence. The functionality of the most common LCR variant was examined in equine and bovine cells. These studies showed that the activity of the variant LCR was higher in equine cells than bovine cells; the activity of the variant LCR in the presence of the E2 variant was similar to the reference/wild-type sequences in equine cells, whereas in bovine cells the variant function was reduced by 50%. These data suggest the viral BPV variants commonly detected in sarcoids have an enhanced function in equine cells compared to their function in bovine cells.

PMID:
17412385
DOI:
10.1016/j.virol.2007.02.019
[Indexed for MEDLINE]
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