Dysregulated miR-27a-3p promotes nasopharyngeal carcinoma cell proliferation and migration by targeting Mapk10

Oncol Rep. 2017 May;37(5):2679-2687. doi: 10.3892/or.2017.5544. Epub 2017 Mar 31.

Abstract

miRNA-27a-3p is an important regulator of carcinogenesis and other pathological processes. However, its role in laryngeal carcinoma is still unknown. In our previous research, we found that miR-27a-3p expression was upregulated in nasopharyngeal carcinoma (NPC) using a microarray chip. In the present study, we identified miR-27a-3p as an endogenous promoter of metastatic invasion. The expression levels of miR-27a-3p were correlated with human metastatic progression outcomes and Kaplan-Meier survival. In silico database analyses revealed that Mapk10 is a potential target of miR-27a-3p, and luciferase reporter assay results revealed that miR-27a-3p directly inhibits the Mapk10 3' untranslated region (3'UTR). Real-time PCR and western blotting results ascertained that Mapk10 expression was regulated by miR‑27a-3p. In addition, miR‑27a-3p gain-of-function promoted cell proliferation, migration and invasion in 5-8 F NPC cells. These effects partially depended on Mapk10, and loss of miR‑27a-3p function had the opposite effects.

MeSH terms

  • Carcinoma / genetics*
  • Carcinoma / metabolism
  • Carcinoma / mortality
  • Carcinoma / pathology*
  • Case-Control Studies
  • Cell Line, Tumor
  • Cell Movement / genetics
  • Cell Proliferation / genetics
  • Down-Regulation
  • Gene Expression Regulation, Neoplastic
  • Humans
  • Kaplan-Meier Estimate
  • MicroRNAs / genetics*
  • MicroRNAs / metabolism
  • Mitogen-Activated Protein Kinase 10 / genetics*
  • Mitogen-Activated Protein Kinase 10 / metabolism
  • Nasopharyngeal Carcinoma
  • Nasopharyngeal Neoplasms / genetics*
  • Nasopharyngeal Neoplasms / metabolism
  • Nasopharyngeal Neoplasms / mortality
  • Nasopharyngeal Neoplasms / pathology*

Substances

  • MIRN27 microRNA, human
  • MicroRNAs
  • Mitogen-Activated Protein Kinase 10