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已发表论文
在人类口腔鳞状细胞癌中，MiR-206 充当一种肿瘤抑制子及直接靶定 K-Ras 基因
Authors Lin FO, Yao LJ, Xiao J, Liu DF, Ni ZY
Published Date September 2014 Volume 2014:7 Pages 1583—1591
DOI http://dx.doi.org/10.2147/OTT.S67624
Received 12 May 2014, Accepted 26 June 2014, Published 11 September 2014
Purpose: MicroRNA-206 (miR-206) has been proven to be downregulated in many human malignancies and is correlated with tumor progression. However, the roles of miR-206 and its related molecular mechanisms in oral squamous cell carcinoma (OSCC) are still unclear. Thus, the aim of this study was to explore the effects of miR-206 in OSCC tumorigenesis and development.
Methods: Quantitative real-time polymerase chain reaction was used to detect miR-206 expression in OSCC cell lines and primary tumor tissues. The association of miR-206 expression with clinicopathological factors and prognosis was also analyzed. In addition, the effects of miR-206 on the biological behavior of OSCC cells were investigated. Lastly, the potential regulatory function of miR-206 on K-Ras expression was confirmed.
Results: MiR-206 expression was significantly downregulated in OSCC tissue samples and cell lines (both P <0.001). Decreased miR-206 expression was significantly associated with advanced tumor node metastasis (TNM) stage, advanced T classifications (ie, size and/or extent of the primary tumor), positive N classification (ie, spread to regional lymph nodes), and shorter overall survival. In addition, upregulation of miR-206 in Tca8113 cells was able to reduce cell proliferation, invasion, and migration and promote cell apoptosis in vitro. Further, K-Ras was confirmed as a direct target of miR-206 by using luciferase reporter assay.
Conclusion: These findings indicate that miR-206 may act as a tumor suppressor in OSCC and could serve as a novel therapeutic agent for miR-based therapy.
Keywords: miR-206, oral squamous cell carcinoma, prognosis, proliferation, apoptosis, invasio
Methods: Quantitative real-time polymerase chain reaction was used to detect miR-206 expression in OSCC cell lines and primary tumor tissues. The association of miR-206 expression with clinicopathological factors and prognosis was also analyzed. In addition, the effects of miR-206 on the biological behavior of OSCC cells were investigated. Lastly, the potential regulatory function of miR-206 on K-Ras expression was confirmed.
Results: MiR-206 expression was significantly downregulated in OSCC tissue samples and cell lines (both P <0.001). Decreased miR-206 expression was significantly associated with advanced tumor node metastasis (TNM) stage, advanced T classifications (ie, size and/or extent of the primary tumor), positive N classification (ie, spread to regional lymph nodes), and shorter overall survival. In addition, upregulation of miR-206 in Tca8113 cells was able to reduce cell proliferation, invasion, and migration and promote cell apoptosis in vitro. Further, K-Ras was confirmed as a direct target of miR-206 by using luciferase reporter assay.
Conclusion: These findings indicate that miR-206 may act as a tumor suppressor in OSCC and could serve as a novel therapeutic agent for miR-based therapy.
Keywords: miR-206, oral squamous cell carcinoma, prognosis, proliferation, apoptosis, invasio
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