title: Genomic characterisation of canine papillomavirus type 17, a possible rare cause of canine oral squamous cell carcinoma.
abstract: Squamous cell carcinomas (SCCs) are the second most common cancer of the canine oral cavity resulting in significant morbidity and mortality. Recently a dog with multiple oral SCCs that contained a novel papillomavirus (PV) was reported. The aim of the present study was to determine the genome of this novel PV. To do this a short section of PV DNA was amplified from an oral SCC and 'back-to-back' primers were designed. Due to the circular nature of PV DNA, these primers were then used to amplify the remainder of the genome by inverse PCR. The PCR product was sequenced using next generation sequencing and the full genome of the PV, consisting of 8007 bp, was assembled and analysed. As this is the seventeenth PV identified from the domestic dog, the novel PV was designated Canis familiaris papillomavirus (CPV) type 17. Similar to other CPV types, the putative coding regions of CPV-17 were predicted to produce 5 early and 2 late proteins. Phylogenetic analysis of ORF L1 revealed greater than 70% similarity to CPV-2 and CPV-7 and we propose that CPV-17 also be classified as a Taupapillomavirus 1. While it appears CPV-17 is only rarely present in canine oral SCCs, evidence suggests that this PV could influence the development of oral SCCs in this species.
authors.affiliation: College of Science, Massey University, Palmerston North, New Zealand. Electronic address: j.munday@massey.ac.nz.
authors.forename: John S
authors.initials: JS
authors.lastname: Munday
authors.affiliation: College of Science, Massey University, Palmerston North, New Zealand.
authors.forename: Magda
authors.initials: M
authors.lastname: Dunowska
authors.affiliation: Otago Genomics and Bioinformatics Facility, Otago University, Dunedin, New Zealand.
authors.forename: Rebecca E
authors.initials: RE
authors.lastname: Laurie
authors.affiliation: College of Science, Massey University, Palmerston North, New Zealand.
authors.forename: Simon
authors.initials: S
authors.lastname: Hills
mesh_terms: D000818:Animals; D002294:Carcinoma, Squamous Cell / Q000662:veterinary* / Q000821:virology; D004283:Dog Diseases / Q000209:etiology* / Q000821:virology; D004285:Dogs; D052691:Lambdapapillomavirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D008297:Male; D009062:Mouth Neoplasms / Q000662:veterinary* / Q000821:virology; D030361:Papillomavirus Infections / Q000150:complications / Q000662:veterinary* / Q000821:virology; D010802:Phylogeny
keywords: Dog; Oncogenesis; Oral; Papillomavirus; Squamous cell carcinoma; Taupapillomavirus