Microarray analysis identifies differentiation-associated genes regulated by human papillomavirus type 16 E6.

Carol L Duffy; Stacia L Phillips; Aloysius J Klingelhutz

doi:10.1016/s0042-6822(03)00390-8

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Microarray analysis identifies differentiation-associated genes regulated by human papillomavirus type 16 E6.

Carol L Duffy·Stacia L Phillips·Aloysius J Klingelhutz

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Abstract

In this study, we used oligonucleotide microarray analysis to determine which cellular genes are regulated by the human papillomavirus type 16 (HPV-16) E6 oncoprotein. We found that E6 causes the downregulation of a large number of cellular genes involved in keratinocyte differentiation, including genes such as small proline-rich proteins, transglutaminase, involucrin, elafin, and cytokeratins, which are normally involved in the production of the cornified cell envelope. In contrast, E6 upregulates several genes, such as vimentin, that are usually expressed in mesenchymal lineages. E6 also modulates levels of genes involved in inflammation, including Cox-1 and Nag-1. By using E6 mutants that differentially target p53 for degradation, we determined that E6 regulates cellular genes by both p53-dependent and independent mechanisms. The microarray data also indicate that HPV-16 E6 modulates certain effects of HPV-16 E7 on cellular gene expression. The identification of E6-regulated genes in this analysis provides a basis for further studies on their role in HPV infection and cellular transformation.

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Cell Differentiation Cell Transformation, Viral Cells, Cultured DNA-Binding Proteins Gene Expression Regulation Humans Keratinocytes Oligonucleotide Array Sequence Analysis Oncogene Proteins, Viral Papillomavirus E7 Proteins Proteins Repressor Proteins Telomerase Tumor Suppressor Protein p53 Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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Carol L Duffy, Stacia L Phillips, Aloysius J Klingelhutz. 2003-09-15. Microarray analysis identifies differentiation-associated genes regulated by human papillomavirus type 16 E6.. https://doi.org/10.1016/s0042-6822(03)00390-8

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