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International Journal of Oncology
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Print ISSN: 1019-6439 Online ISSN: 1791-2423
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December-2014 Volume 45 Issue 6

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Article

miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN

  • Authors:
    • Hai‑Bing Sun
    • Xi Chen
    • Hong Ji
    • Tao Wu
    • Hong‑Wei Lu
    • Yan Zhang
    • Hua Li
    • Yi‑Ming Li
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
  • Pages: 2486-2494
    |
    Published online on: September 22, 2014
       https://doi.org/10.3892/ijo.2014.2665
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Abstract

Accumulating evidence has shown that micro­RNAs (miRNAs) are involved in multiple processes in cancer development and progression. Upregulation of miRNA‑494 (miR‑494) has been identified as an oncogenic miRNA and is associated with poor prognosis in several types of human cancer. However, the specific function of miR‑494 in colorectal cancer remains unclear. In this study we found that the expression of miR‑494 in colorectal cancer tissues and cell lines was much higher than in normal control tissues and cells, respectively. In addition, upregulation of miR‑494 more frequently occurred in tissue specimens with adverse clinical stage and the presence of distant metastasis. Moreover, multivariate survival analyses demonstrated that overexpression of miR‑494 is an independent prognostic factor for both progression‑free and overall survival. In addition miR‑494 promoted invasion and migration in colorectal cancer cells, and miR‑494 directly inhibited the phosphatase and tensin homolog deleted on chromosome 10 (PTEN) expression by targeting its 3'‑untranslated region (3'‑UTR). Moreover, PTEN is down regulated and inversely correlated with miR‑494 expression in tissues. Thus, for the first time, we provided convincing evidence that upregulation of miR‑494 was associated with tumor aggressiveness and tumor metastasis and promoted cell migration and invasion by targeting PTEN gene in colorectal cancer, and miR‑494 is an independent prognostic marker for colorectal cancer patients.
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Copy and paste a formatted citation
Spandidos Publications style
Sun HB, Chen X, Ji H, Wu T, Lu HW, Zhang Y, Li H and Li YM: miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN. Int J Oncol 45: 2486-2494, 2014.
APA
Sun, H., Chen, X., Ji, H., Wu, T., Lu, H., Zhang, Y. ... Li, Y. (2014). miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN. International Journal of Oncology, 45, 2486-2494. https://doi.org/10.3892/ijo.2014.2665
MLA
Sun, H., Chen, X., Ji, H., Wu, T., Lu, H., Zhang, Y., Li, H., Li, Y."miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN". International Journal of Oncology 45.6 (2014): 2486-2494.
Chicago
Sun, H., Chen, X., Ji, H., Wu, T., Lu, H., Zhang, Y., Li, H., Li, Y."miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN". International Journal of Oncology 45, no. 6 (2014): 2486-2494. https://doi.org/10.3892/ijo.2014.2665
Copy and paste a formatted citation
x
Spandidos Publications style
Sun HB, Chen X, Ji H, Wu T, Lu HW, Zhang Y, Li H and Li YM: miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN. Int J Oncol 45: 2486-2494, 2014.
APA
Sun, H., Chen, X., Ji, H., Wu, T., Lu, H., Zhang, Y. ... Li, Y. (2014). miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN. International Journal of Oncology, 45, 2486-2494. https://doi.org/10.3892/ijo.2014.2665
MLA
Sun, H., Chen, X., Ji, H., Wu, T., Lu, H., Zhang, Y., Li, H., Li, Y."miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN". International Journal of Oncology 45.6 (2014): 2486-2494.
Chicago
Sun, H., Chen, X., Ji, H., Wu, T., Lu, H., Zhang, Y., Li, H., Li, Y."miR‑494 is an independent prognostic factor and promotes cell migration and invasion in colorectal cancer by directly targeting PTEN". International Journal of Oncology 45, no. 6 (2014): 2486-2494. https://doi.org/10.3892/ijo.2014.2665
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