Genomic comparison of bovine papillomavirus 1 isolates from bovine, equine and asinine lesional tissue samples.

Koch, Christoph; Ramsauer, A S; Drögemüller, Michaela; Ackermann, M; Gerber, Vinzenz; Tobler, K (2018). Genomic comparison of bovine papillomavirus 1 isolates from bovine, equine and asinine lesional tissue samples. Virus research, 244, pp. 6-12. Elsevier 10.1016/j.virusres.2017.11.005

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Several attempts have been made to categorize equid- and bovid-specific bovine papillomavirus 1 (BPV1) isolates based on sequence tags. This study includes newly determined sequence information from 33 BPV1 isolates of equine, asinine and bovine origin and investigates sequence bias due to host species. Twenty of the viral genomes were sequenced over their entire length and a further thirteen were sequenced, including flanking sequences, at two specific sites, the LCR and the E5 ORF. Alignment and analyses of the sequences did not reveal statistically significant site differences between the sequences of bovine and equid origin. None of the proposed sites of divergence noted by other authors demonstrated significant species-specific characteristics. Our results suggest that BPV1 is shared between equine, asinine and bovine host species, and that viral transfer between bovines and equids is a repeated and ongoing phenomenon.

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