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MicroRNA-194 represses glioma cell epithelial‑to‑mesenchymal transition by targeting Bmi1

Xi Zhang1, Chunyan Wei2, Jin Li1

  • 1Department of Neurosurgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China.

Oncology Reports
|January 19, 2017
PubMed

Insights

MicroRNA-194 (miR-194) is downregulated in glioma, inhibiting cancer cell migration and invasion. It targets Bmi1, suggesting miR-194 restoration as a potential glioma therapy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • MicroRNA-194 (miR-194) is often dysregulated in various cancers.
  • The specific role of miR-194 in glioma pathogenesis is currently unknown.

Purpose of the Study:

  • To investigate the biological functions of miR-194 in glioma.
  • To elucidate the molecular mechanism underlying miR-194's role in glioma progression.

Main Methods:

  • Real-time quantitative polymerase chain reaction (RT-qPCR) to assess miR-194 expression.
  • Cell migration, invasion, and epithelial-mesenchymal transition (EMT) assays.
  • Bioinformatics analysis, dual-luciferase reporter assay, RT-qPCR, and western blot to validate Bmi1 as a direct target of miR-194.

Main Results:

  • miR-194 expression was significantly decreased in glioma tissues and cell lines.
  • Overexpression of miR-194 suppressed glioma cell migration, invasion, and EMT.
  • Bmi1 was identified and validated as a direct target of miR-194.
  • Restoration of Bmi1 expression reversed the inhibitory effects of miR-194 on glioma cell EMT.

Conclusions:

  • miR-194 inhibits glioma cell EMT by directly targeting Bmi1.
  • This study provides novel insights into glioma pathogenesis.
  • Restoring miR-194 levels may represent a potential therapeutic strategy for glioma treatment.

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