Repression of HPV16 early region transcription by the E2 protein

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dc.contributor.author Soeda, Emiko en_US
dc.contributor.author Ferran, Maureen en_US
dc.contributor.author Baker, Carl en_US
dc.contributor.author McBride, Alison en_US
dc.date.accessioned 2006-08-14T15:39:18Z en_US
dc.date.available 2006-08-14T15:39:18Z en_US
dc.date.issued 2006-07-20 en_US
dc.identifier.citation Virology 351N1 (2006) 29-41 en_US
dc.identifier.issn 0042-6822 en_US
dc.identifier.uri http://hdl.handle.net/1850/2282 en_US
dc.description.abstract HPV16 DNA is often integrated in cancers, disrupting the E1 or E2 genes. E2 can repress the E6/E7 promoter, but other models have been proposed to explain why integration promotes malignant progression. E1 and E2 are required for viral replication, and so genetic analysis of their role in transcriptional regulation is complex. Therefore, we developed an extrachromosomal vector containing HPV16 to undertake a genetic analysis of the E1 and E2 genes. We demonstrate that the E2 protein is primarily a transcriptional repressor when expressed from the virus. Furthermore, repression requires both the transactivation function of E2 and specific binding of E2 to the LCR. We find no evidence that the E1 protein directly modulates HPV16 gene expression. However, certain E1 mutations modulated transcription indirectly by altering splicing of E2 mRNA species. These data provide important insight into which E1 and E2 functions are optimal targets for anti-viral therapies. en_US
dc.format.extent 37365 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher Elsevier: Virology en_US
dc.subject E2 protein en_US
dc.subject Repression en_US
dc.subject Transcription en_US
dc.title Repression of HPV16 early region transcription by the E2 protein en_US
dc.type Article en_US
dc.identifier.url http://dx.doi.org/10.1016/j.virol.2006.03.016

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