Abstract:
:The papillomavirus (PV) E2 protein activates transcription and replication by recruiting cellular proteins and the E1 DNA helicase to their binding sites in the viral genome. We recently demonstrated that phosphorylation of tyrosine 102 in the bovine papillomavirus (BPV-1) E2 protein restricts these activities and that fibroblast growth factor receptor-3 (FGFR3) tyrosine kinase binds PV E2. Expression of FGFR3 decreased viral replication with both wild-type and the phenylalanine substitution at position 102, inferring that another kinase targets Y102. Here we tested FGFR- 1, -2 and -4 for association with PV E2 proteins. FGFR2 but not FGFR1 or FGFR4 co-immunoprecipitated with BPV-1 E2. We found that FGFR2 suppressed replication but did not depend on phosphorylation of BPV-1 Y102. HPV-16 and -31 E2 interacted with FGFR1, -2, and -4. These results imply that the expression and activity of FGF receptors in epithelial cells can regulate the function of E2 in viral replication.
journal_name
Virologyjournal_title
Virologyauthors
DeSmet M,Kanginakudru S,Jose L,Xie F,Gilson T,Androphy EJdoi
10.1016/j.virol.2018.05.013subject
Has Abstractpub_date
2018-08-01 00:00:00pages
62-68eissn
0042-6822issn
1096-0341pii
S0042-6822(18)30154-5journal_volume
521pub_type
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