alexa A New Sandwich ELISA Test Simultaneously Detecting E7 Proteins of HPV-16, 18 and 45 in Cervical Smears | OMICS International | Abstract
ISSN: 2327-5073

Clinical Microbiology: Open Access
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Research Article

A New Sandwich ELISA Test Simultaneously Detecting E7 Proteins of HPV-16, 18 and 45 in Cervical Smears

Christina Metzger1#, Annabella Pittl1#, Andreas M. Kaufmann2, Theodoros Agorastos3, Kimon Chatzistamatiou3, Oliver Böcher4, Werner Zwerschke1, Haymo Pircher1, Isabel Koch4§, and Pidder Jansen-Dürr1§*

1Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria

2Clinic for Gynecology, CBF, Charite-Universitätsmedizin Berlin, Berlin, Germany

34th Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Greece

4Mikrogen GmbH, Neuried, Germany

#These authors contributed equally to the work

§Equally contributing senior authors

*Corresponding Author:
Dr. Pidder Jansen-Dürr
Institute for Biomedical Aging Research, Universität Innsbruck
Rennweg 10, 6020 Innsbruck, Austria
Tel: 0043-512-58391944
Fax: 0043-512-5839198
E-mail: [email protected]

Received date: July 26, 2016; Accepted date: September 14, 2016; Published date:September 21, 2016

Citation: Metzger C, Pittl A, Kaufmann AM, Agorastos T, Chatzistamatiou K, et al. (2016) A New Sandwich ELISA Test Simultaneously Detecting E7 Proteins of HPV-16, 18 and 45 in Cervical Smears. Clin Microbiol 5:260. doi:10.4172/2327-5073.1000260

Copyright: © 2016 Metzger C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Persistent infections by high-risk papilloma viruses (HPV) are the main etiological factor for cervical cancer, and E7 oncoproteins were suggested as new markers for tumor progression. The objective of this study was to generate a new Enzyme-Linked Immunosorbent Assay (ELISA)-based detection system to monitor expression of the E7 proteins of the high-risk HPV (hrHPV) types HPV-16, HPV-18, and HPV-45 in cervical smears. Using a combination of rabbit monoclonal antibodies raised against E7 proteins of HPV-16 and HPV-18/HPV-45, respectively, a trivalent E7-ELISA was developed and validated, using recombinant E7 proteins of various HPV types and lysates from E7- positive cervical carcinoma cells. The amount of 0.5 picogram of E7 protein per well was determined as detection limit. The E7-ELISA was used to determine E7 protein levels in cervical smears obtained from a total of 67 women. E7 protein concentration was below the detection limit in all HPV-negative smears, and E7 protein concentrations above background were found in some HPV-positive cervical samples. Together the work described herein provides a new tool for the simultaneous detection of E7 proteins of the three most prevalent in cervical neoplasia hrHPV types.

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