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Article

MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma

  • Authors:
    • Bingyin Yang
    • Rui Xie
    • Shang-Nong Wu
    • Cheng-Cheng Gao
    • Xiao-Zhong Yang
    • Jing-Fang Zhou
  • View Affiliations / Copyright

    Affiliations: Department of Gastroenterology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
  • Pages: 255-263
    |
    Published online on: November 6, 2017
       https://doi.org/10.3892/or.2017.6079
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Abstract

To investigate the expression pattern, clinical significance and functional roles of microRNA (miR)-615-5p in human esophageal squamous cell carcinoma (ESCC), , quantitative real-time PCR was performed to detect expression levels of miR‑615‑5p in ESCC tissues and cell lines. Associations between miR‑615‑5p expression and various clinicopathological features of ESCC patients were also statistically evaluated. The candidate targets of miR‑615‑5p were identified by integrating bioinformatics miRNA target prediction, western blot analysis and luciferase reporter assay. Moreover, the functions of miR‑615‑5p in ESCC cell migration and invasion were determined using the transfection of miRNA mimics, or co-transfected with miRNA mimics and the expression vector of its target gene. As a result, miR‑615‑5p expression in ESCC tissues and cells were markedly lower than those in non-cancerous esophageal mucosa and human normal esophageal cells, respectively (both P<0.001). miR‑615‑5p downregulation was significantly associated with advanced tumor-node-metastasis stage, positive lymph node metastasis and moderate-poor differentiation. Functionally, the re-expression of miR‑615‑5p suppressed the invasion and migration of ESCC cells in vitro. Interestingly, insulin-like growth factor 2 (IGF2) was identified as a direct target gene of miR‑615‑5p, and the inhibitory effects of miR‑615‑5p in ESCC cell motility were reversed by the restoration of IGF2 expression. In conclusion, miR‑615‑5p downregulation may be an underlying molecular mechanism of development and progression of ESCC, and may function as a potential therapeutic target of this malignancy. Also, we illustrate that the miR‑615‑5p/IGF2 axis may bring important contributions to cell motility of human ESCC.
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Copy and paste a formatted citation
Spandidos Publications style
Yang B, Xie R, Wu S, Gao C, Yang X and Zhou J: MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma. Oncol Rep 39: 255-263, 2018.
APA
Yang, B., Xie, R., Wu, S., Gao, C., Yang, X., & Zhou, J. (2018). MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma. Oncology Reports, 39, 255-263. https://doi.org/10.3892/or.2017.6079
MLA
Yang, B., Xie, R., Wu, S., Gao, C., Yang, X., Zhou, J."MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma". Oncology Reports 39.1 (2018): 255-263.
Chicago
Yang, B., Xie, R., Wu, S., Gao, C., Yang, X., Zhou, J."MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma". Oncology Reports 39, no. 1 (2018): 255-263. https://doi.org/10.3892/or.2017.6079
Copy and paste a formatted citation
x
Spandidos Publications style
Yang B, Xie R, Wu S, Gao C, Yang X and Zhou J: MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma. Oncol Rep 39: 255-263, 2018.
APA
Yang, B., Xie, R., Wu, S., Gao, C., Yang, X., & Zhou, J. (2018). MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma. Oncology Reports, 39, 255-263. https://doi.org/10.3892/or.2017.6079
MLA
Yang, B., Xie, R., Wu, S., Gao, C., Yang, X., Zhou, J."MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma". Oncology Reports 39.1 (2018): 255-263.
Chicago
Yang, B., Xie, R., Wu, S., Gao, C., Yang, X., Zhou, J."MicroRNA-615-5p targets insulin-like growth factor 2 and exerts tumor-suppressing functions in human esophageal squamous cell carcinoma". Oncology Reports 39, no. 1 (2018): 255-263. https://doi.org/10.3892/or.2017.6079
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