期刊
GYNECOLOGIC ONCOLOGY
卷 134, 期 1, 页码 129-137出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygyno.2014.04.047
关键词
miR-31; Cervical cancer; ARID1A; Cell metastasis; Cell proliferation
资金
- Chinese National Natural Science Foundation [81172465, 81372803, 30700984]
- Fundamental Research Funds for the Central Universities [HUST:2014QN122]
Objectives. MicroRNAs(miRNAs) play important roles in tumor development and progression. The purposes of this study were to investigate the role of miR-31 in cervical cancer and clarified the regulation of ARID1A by miR-31. Methods. Quantitative RT-PCR was used to examine miR-31 expression in cervical cancer cell lines and patient specimens. The clinicopathological significance of miR-31 upregulation was further analyzed. The MU, colony formation, apoptosis, cell cycle, wound healing and Transwell invasion assays, and a xenograft model were performed. A luciferase reporter assay was conducted to confirm the target gene of miR-31, and the results were validated in cell lines and patient specimens. Results. MiR-31 was significantly up-regulated in cervical cancer cell lines and clinical tissues. The high miR-31 level was significantly correlated with higher FIGO stage, node metastasis, vascular involvement and deep stromal invasion. Patients with high expression of miR-31 had poorer overall survival than patients with low expression. MiR-31 was an independent prognostic factor in cervical cancer in multivariate Cox regression analysis. Down-regulation of miR-31 impaired cell proliferation, colony formation, and cell migration and invasion in vitro, and inhibited xenograft tumor growth in vivo. ARID1A was verified as a direct target of miR-31, which was further confirmed by the inverse expression of miR-31 and ARID1A in patient specimens. Conclusions. The newly identified miR-31/ARID1A pathway provides insight into cervical cancer progression, and may represent a novel therapeutic target. (C) 2014 Elsevier Inc. All rights reserved.
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