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MiR-494 Inhibits Epithelial Ovarian Cancer Growth by Targeting c-Myc

Jialing Yuan1, Kana Wang1, Mingrong Xi1

  • 1Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China (mainland).

Medical Science Monitor : International Medical Journal of Experimental and Clinical Research
|February 25, 2016
PubMed

Insights

MicroRNA-494 (miR-494) acts as a tumor suppressor in epithelial ovarian cancer (EOC). Low miR-494 levels promote EOC cell growth and migration by targeting c-Myc.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Epithelial ovarian cancer (EOC) is a highly lethal gynecological malignancy.
  • MicroRNAs (miRNAs) are implicated in the pathogenesis of various cancers, including EOC.
  • The specific role of miR-494 in EOC remains underexplored.

Purpose of the Study:

  • To investigate the role and mechanism of miR-494 in epithelial ovarian cancer.
  • To determine the expression levels of miR-494 in EOC tissues and cells.
  • To identify the downstream targets of miR-494 involved in EOC progression.

Main Methods:

  • Quantitative real-time PCR (qRT-PCR) to assess miR-494 expression.
  • Cell transfection with miR-494 mimics or antisense oligonucleotides (ASO).
  • Bioinformatic prediction (TargetScanHuman), Western blot, and dual-luciferase assays to confirm gene targets and interactions.

Main Results:

  • MiR-494 expression was significantly downregulated in EOC tissues and cells.
  • Overexpression of miR-494 suppressed EOC cell proliferation and migration.
  • Conversely, reduced miR-494 levels enhanced EOC cell growth and migration.
  • c-Myc was identified as a direct target gene of miR-494.

Conclusions:

  • MiR-494 exhibits an anti-tumor function in epithelial ovarian cancer.
  • The tumor-suppressive effect of miR-494 is mediated through the inhibition of its target gene, c-Myc.

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