High expression of DDX20 enhances the proliferation and metastatic potential of prostate cancer cells through the NF-κB pathway

Chen,Weiguo; Zhou,Peng; Li,Xiaowei

doi:10.3892/ijmm.2016.2575

June-2016 Volume 37 Issue 6

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June-2016 Volume 37 Issue 6

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High expression of DDX20 enhances the proliferation and metastatic potential of prostate cancer cells through the NF-κB pathway

Authors:
- Weiguo Chen
- Peng Zhou
- Xiaowei Li
View Affiliations / Copyright

Affiliations: Department of Urology, Chengdu Military General Hospital, Chengdu, Sichuan 610083, P.R. China

Copyright: © Chen et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
Pages: 1551-1557
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Published online on: April 25, 2016

https://doi.org/10.3892/ijmm.2016.2575
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Abstract

DEAD (Asp-Glu-Ala-Asp) box polypeptide 20 (DDX20), a member of the DEAD box protein family, encodes an RNA helicase. Previous research has revealed that DDX20 may act as a tumor suppressor in hepatocellular carcinoma and as a tumor promoter in breast cancer. These conflicting reports prompted us to explore the role of DDX20 in prostate cancer (PCa). To gain insight into the functions of DDX20 in PCa, we examined DDX20 expression patterns in a PCa tissue microarray with 99 PCa tissue samples. The results of immunohistochemical staining revealed that DDX20 expression is frequently upregulated in PCa tissues compared with that in the adjacent tissues and further clinicopathological analysis showed that the expression level of DDX20 closely correlates with tumor size, TNM stage (positive correlation) and patient prognosis (negative correlation). Both gain‑of- and loss‑of‑function assays were performed in vitro; the overexpression of DDX20 enhanced the proliferation and metastatic potential of cancer cells and this was examined by performing a cell counting kit-8 (CCK-8) assay, wound healing assay and Transwell migration assay. Furthermore, we found that there is a positive correlation between the expression of matrix metallopeptidase 9 (MMP9) and DDX20 expression. These findings led us to examine whether DDX20 may exert effects through the NF‑κB pathway. Luciferase reporter assays suggested that DDX20 altered the activity of NF-κB. Taken together, these findings show that DDX20 may promote the progression of PCa through the NF-κB pathway.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

High expression of DDX20 enhances the proliferation and metastatic potential of prostate cancer cells through the NF-κB pathway

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