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Published in: BMC Cancer 1/2017

Open Access 01-12-2017 | Research article

MiR-9, miR-21, and miR-155 as potential biomarkers for HPV positive and negative cervical cancer

Authors: Sunyoung Park, Kiyoon Eom, Jungho Kim, Hyeeun Bang, Hye-young Wang, Sungwoo Ahn, Geehyuk Kim, Hyoungsoon Jang, Sunghyun Kim, Dongsup Lee, Kwang Hwa Park, Hyeyoung Lee

Published in: BMC Cancer | Issue 1/2017

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Abstract

Background

Cervical cancer is the second leading cause of death among female patients with cancer in the world. High risk human papillomavirus has causal roles in cervical cancer initiation and progression by deregulating several cellular processes. However, HPV infection is not sufficient for cervical carcinoma development. Therefore, other genetic and epigenetic factors may be involved in this complex disease, and the identification of which may lead to better diagnosis and treatment. Our aim was to analyze the expression of microRNAs in cervical cancer cases positive or negative for HPV E6/E7 mRNA, and to assess their diagnostic usefulness and relevance.

Methods

The expression of three different microRNAs (miR-9, miR-21, and miR-155) in 52 formalin-fixed paraffin-embedded (FFPE) primary cervical cancer tissue samples and 50 FFPE normal cervical tissue samples were evaluated.

Results

MiR-9, miR-21, and miR-155 were significantly overexpressed in cervical cancer tissues compared to normal tissues (P < 0.001). MiR-21 and miR-155 expression combined with the HPV E6/E7 mRNA assay in HPV E6/E7 negative cervical cancer showed increased AUC of 0.7267 and 0.7000, respectively (P = 0.01, P = 0.04), demonstrating their potential as diagnostic tools. Moreover, miR-21 and miR-155 were predictors showing a 7 fold and 10.3 fold higher risk for HPV E6/E7 negative patients with cervical cancer (P = 0.024 and P = 0.017, respectively) while miR-155 was a predictor showing a 27.9 fold higher risk for HPV E6/E7 positive patients with cervical cancer (P < 0.0001).

Conclusions

There is a strong demand for additional, alternative molecular biomarkers for diagnosis and management of precancer patients. MiR-21 and miR-155 may be helpful in the prediction of both HPV positive and HPV negative cases of cervical cancer.
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Metadata
Title
MiR-9, miR-21, and miR-155 as potential biomarkers for HPV positive and negative cervical cancer
Authors
Sunyoung Park
Kiyoon Eom
Jungho Kim
Hyeeun Bang
Hye-young Wang
Sungwoo Ahn
Geehyuk Kim
Hyoungsoon Jang
Sunghyun Kim
Dongsup Lee
Kwang Hwa Park
Hyeyoung Lee
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2017
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-017-3642-5

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