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Published in: Journal of Translational Medicine 1/2012

Open Access 01-12-2012 | Research

PDCD6 is an independent predictor of progression free survival in epithelial ovarian cancer

Authors: Dan Su, Haiyan Xu, Jianguo Feng, Yun Gao, Linhui Gu, Lisha Ying, Dionyssios Katsaros, Herbert Yu, Shenhua Xu, Ming Qi

Published in: Journal of Translational Medicine | Issue 1/2012

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Abstract

Background

Programmed cell death 6 (PDCD6) beside its known proapoptotic functions may be a player in survival pathways in cancer. The purpose of this study is to further explore the roles of PDCD6 in epithelial ovarian cancer.

Methods

Lentiviral vector with shRNA for PDCD6 was used to investigate the effects of PDCD6 knockdown on cell growth, cell cycle, apoptosis and motility in ovarian cancer cells. Two hundred twelve epithelial ovarian cancer tissues were analyzed for mRNA expression of PDCD6 using RT-PCR. Associations of its expression with clinical pathological factors, progression free and overall survival were evaluated.

Results

PDCD6 is highly expressed in metastatic ovarian cancer cells and positively regulates cell migration and invasion. Significantly, the level of PDCD6 expression in epithelial ovarian cancer correlates with clinical progression. Patients with medium or high levels of PDCD6 mRNA were at higher risk for disease progression, compared to those with low levels (HR, 1.29; P = 0.024 for medium levels; and HR, 1.57; P = 0.045 for high levels) after adjusting for age, disease stage, tumor grade, histologic type and residual tumor size. Kaplan-Meier survival analysis demonstrated similar results. However, no association was found between PDCD6 expression and overall survival.

Conclusions

PDCD6 seems to play an important role in ovarian cancer progression and it may be an independent predictor of progression free survival in epithelial ovarian cancer. Further studies are needed to more completely elucidate the molecular mechanisms of PDCD6 involve in ovarian cancer progression.
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Metadata
Title
PDCD6 is an independent predictor of progression free survival in epithelial ovarian cancer
Authors
Dan Su
Haiyan Xu
Jianguo Feng
Yun Gao
Linhui Gu
Lisha Ying
Dionyssios Katsaros
Herbert Yu
Shenhua Xu
Ming Qi
Publication date
01-12-2012
Publisher
BioMed Central
Published in
Journal of Translational Medicine / Issue 1/2012
Electronic ISSN: 1479-5876
DOI
https://doi.org/10.1186/1479-5876-10-31

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