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Vet Microbiol. 2014 Jun 4;170(3-4):213-23. doi: 10.1016/j.vetmic.2014.02.016. Epub 2014 Feb 16.

Equus asinus papillomavirus (EaPV1) provides new insights into equine papillomavirus diversity.

Author information

1
Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, via Vienna 2, 07100 11 Sassari, Italy.
2
Dipartimento di Scienze Mediche Veterinarie, Alma Mater Studiorum Università di Bologna, via Tolara di sopra 50, 40064 Ozzano Emilia, Bologna, Italy.
3
Centro Fauna Bonassai, Olmedo, Sassari, Italy.
4
Dipartimento di Medicina Veterinaria, Università degli Studi di Sassari, via Vienna 2, 07100 11 Sassari, Italy. Electronic address: alberti@uniss.it.

Abstract

We detected a novel papillomavirus (EaPV1) from healthy skin and from sun associated cutaneous lesions of an Asinara (Sardinia, Italy) white donkey reared in captivity in a wildlife recovery centre. The entire genome of EaPV1 was cloned, sequenced, and characterised. Genome is 7467 bp long, and shows some characteristic elements of horse papillomaviruses, including a small untranslated region between the early and late regions and the lack of the retinoblastoma tumour suppressor binding domain LXCXE in E7. Additionally, a typical E6 ORF is missing. EaPV1 DNA was detected in low copies in normal skin of white and grey donkeys of the Asinara Island, and does not transform rodent fibroblasts in standard transformation assays. Pairwise nucleotide alignments and phylogenetic analyses based on concatenated E1-E2-L1 amino acid sequences revealed the highest similarity with the Equine papillomavirus type 1. The discovery of EaPV1, the prototype of a novel genus and the first papillomavirus isolated in donkeys, confirms a broad diversity in Equidae papillomaviruses. Taken together, data suggest that EaPV1 is a non-malignant papillomavirus adapted to healthy skin of donkeys.

KEYWORDS:

Asinara white donkey; Equine papillomaviruses; Evolution; Genome; Skin; Viral diversity

PMID:
24636161
DOI:
10.1016/j.vetmic.2014.02.016
[Indexed for MEDLINE]

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