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Induction of focal epithelial hyperplasia in tongue of young bk6-E6/E7 HPV16 transgenic mice

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Abstract

Squamous cell carcinoma (SCC) of the oral cavity is one of the most common neoplasms in the world. During the past 2 decades, the role of high-risk human papilloma virus (HR-HPV) has been studied and the data supporting HPV as a one of the causative agents in the development and progression of a sub-set of head and neck squamous cell carcinomas (HNSCC) has accumulated. In order to investigate the role of HR-HPV oncogene expression in early epithelial alterations in vivo, we produced transgenic mice expressing HPV16 early region genes from the promoter of the bovine keratin 6 gene (Tg[bK6-E6/E7]). In this article, we demonstrate that E6/E7 transgene was abundantly expressed and cellular proliferation was increased in the middle tongue epithelia of transgenic mice, and that in the same region young (27 weeks old) Tg[bK6-E6/E7] mice spontaneously developed histological alterations, mainly focal epithelial hyperplasia (FEH).

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Acknowledgments

We would like to thank Biol. Elizabeth Alvarez-Rios, Biol. Enrique García-Villa, M.Sc. María Guadalupe Aguilar González, Mr. Francisco Garzon, Mr. Miguel A. Escobar and Mr. Lauro Macias (CINVESTAV-IPN, Mexico) for technical support. This work was supported by CONACyT (Mexico) and ICGEB, CRP Programme, Trieste, Italy. PG was supported by a UICC Translational Cancer Research Fellowship, funded by Novartis (Switzerland).

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Correspondence to Patricio Gariglio.

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Ocadiz-Delgado, R., Marroquin-Chavira, A., Hernandez-Mote, R. et al. Induction of focal epithelial hyperplasia in tongue of young bk6-E6/E7 HPV16 transgenic mice. Transgenic Res 18, 513–527 (2009). https://doi.org/10.1007/s11248-009-9243-6

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  • DOI: https://doi.org/10.1007/s11248-009-9243-6

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