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Cancers 2014, 6(3), 1553-1569; doi:10.3390/cancers6031553

An RNA Aptamer Targets the PDZ-Binding Motif of the HPV16 E6 Oncoprotein

1
School of Molecular and Cellular Biology, Faculty of Biological Sciences and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
2
UMR 7242 CNRS-Université de Strasbourg, Ecole Supérieure de Biotechnologie, Boulevard Sébastien Brant, Illkirch 67412, France
*
Author to whom correspondence should be addressed.
Received: 20 May 2014 / Revised: 23 June 2014 / Accepted: 3 July 2014 / Published: 24 July 2014
(This article belongs to the Special Issue DNA Viruses in Human Cancer)
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Abstract

Human papillomavirus 16 (HPV16) is a high-risk DNA tumour virus which is the primary causative agent of cervical cancer. Cell transformation arises from deregulated expression of the E6 and E7 oncogenes. E6 has been shown to bind a number of cellular proteins, including p53 and proteins containing a PDZ domain. This study reports the first RNA aptamers to E6. These have been employed as molecular tools to further investigate E6-p53 and E6-PDZ interactions. This study is focussed on two aptamers (termed F2 and F4) which induced apoptosis in cells derived from an HPV16-transformed cervical carcinoma. The molecules were able to inhibit the interaction between E6 and PDZ1 from Magi1, with F2 being the most effective inhibitor. Neither of the aptamers inhibited E6-p53 interaction or p53 degradation. This study shows the specificity of this approach and highlights the potential benefits of the E6 aptamers as potential therapeutic or diagnostic agents in the future. View Full-Text
Keywords: HPV16 E6; PDZ domain; p53; RNA aptamer; SELEX HPV16 E6; PDZ domain; p53; RNA aptamer; SELEX
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MDPI and ACS Style

Belyaeva, T.A.; Nicol, C.; Cesur, Ö.; Travé, G.; Blair, G.E.; Stonehouse, N.J. An RNA Aptamer Targets the PDZ-Binding Motif of the HPV16 E6 Oncoprotein. Cancers 2014, 6, 1553-1569.

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