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MiR-718 represses VEGF and inhibits ovarian cancer cell progression

Ruobing Leng1, Lang Zha2, Liangdan Tang1

  • 1Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, People's Republic of China.

FEBS Letters
|May 13, 2014
PubMed

Insights

Restoring microRNA-718 (miR-718) expression inhibits ovarian cancer growth by targeting vascular endothelial growth factor (VEGF). This finding offers a potential new therapeutic strategy for ovarian cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Vascular endothelial growth factor (VEGF) oncogenic activation is implicated in various cancers, including ovarian cancer.
  • MicroRNAs (miRNAs) are key regulators of gene expression and play critical roles in cancer development.

Purpose of the Study:

  • To investigate the role of miR-718 in regulating VEGF expression in ovarian cancer.
  • To explore the therapeutic potential of restoring miR-718 in ovarian cancer.

Main Methods:

  • Correlation analysis of miR-718 and VEGF expression in ovarian cancer tissues.
  • Luciferase reporter assays to confirm direct targeting of VEGF by miR-718.
  • In vitro and in vivo assays to assess the effect of miR-718 restoration on ovarian cancer proliferation.
  • Western blot analysis to evaluate the impact of VEGF on AKT phosphorylation.

Main Results:

  • miR-718 expression is significantly downregulated in ovarian cancer specimens and inversely correlates with VEGF levels.
  • miR-718 directly targets and represses VEGF expression.
  • Restoration of miR-718 inhibits ovarian cancer cell proliferation in vitro and tumor growth in vivo.
  • VEGF overexpression can counteract the anti-proliferative effects of miR-718 by increasing phosphorylated AKT levels.

Conclusions:

  • miR-718 acts as a tumor suppressor in ovarian cancer by inhibiting VEGF expression.
  • Restoring miR-718 represents a promising therapeutic strategy for ovarian cancer, targeting the VEGF pathway.
Keywords:
ApoptosisMiR-718Ovarian cancerProliferationVEGF

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