Abstract:
:Felis catus papillomavirus type 2 (FcaPV2) DNA is found in feline cutaneous squamous cell carcinomas (SCCs); however, its biological properties are still uncharacterized. In this study, we successfully expressed FcaPV2 E6 and E7 putative oncogenes in feline epithelial cells and demonstrated that FcaPV2 E6 binds to p53, impairing its protein level. In addition, E6 and E7 inhibited ultraviolet B (UVB)-triggered accumulation of p53, p21 and pro-apoptotic markers such as Cleaved Caspase3, Bax and Bak, suggesting a synergistic action of the virus with UV exposure in tumour pathogenesis. Furthermore, FcaPV2 E7 bound to feline pRb and impaired pRb levels, resulting in upregulation of the downstream pro-proliferative genes Cyclin A and Cdc2. Importantly, we demonstrated mRNA expression of FcaPV2 E2, E6 and E7 in feline SCC samples, strengthening the hypothesis of a causative role in the development of feline SCC.
journal_name
Virologyjournal_title
Virologyauthors
Altamura G,Corteggio A,Pacini L,Conte A,Pierantoni GM,Tommasino M,Accardi R,Borzacchiello Gdoi
10.1016/j.virol.2016.05.017subject
Has Abstractpub_date
2016-09-01 00:00:00pages
1-8eissn
0042-6822issn
1096-0341pii
S0042-6822(16)30126-Xjournal_volume
496pub_type
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