Upregulation of miR-542-3p inhibits the growth and invasion of human colon cancer cells through PI3K/AKT/survivin signaling

Oncol Rep. 2017 Dec;38(6):3545-3553. doi: 10.3892/or.2017.6054. Epub 2017 Oct 23.

Abstract

The present study was designed to assess the expression of microRNA-542-3p (miR-542-3p) in human colon cancer and investigate the possible molecular mechanisms underlying the effect of miR-542-3p on the growth and invasion of colon cancer cells. We found that miR-542-3p expression was downregulated in colon cancer patient tissues, compared with that observed in the control group. Silencing of miR‑542-3p expression significantly promoted cell viability and inhibited apoptosis. In addition, overexpression of miR-542-3p significantly reduced cell viability and promoted apoptosis in colon cancer cells. Meanwhile, silencing of miR-542-3p expression significantly suppressed PI3K and p-AKT and survivin protein expression, while overexpression of miR-542-3p significantly induced PI3K and p-AKT and survivin protein expression in colon cancer cells. PI3K inhibitor (LY294002) or survivin inhibitor (YM155) suppressed PI3K/AKT/survivin signaling and increased the anticancer effects of miR-542-3p on the apoptosis in colon cancer. The present study demonstrated that upregulation of miR-542-3p inhibited the growth and invasion of colon cancer cells through PI3K/AKT/survivin signaling, highlighting a novel therapeutic approach for the treatment of colon cancer.

MeSH terms

  • Apoptosis
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Chromones / pharmacology
  • Colonic Neoplasms / genetics*
  • Colonic Neoplasms / metabolism
  • Female
  • Gene Expression Regulation, Neoplastic / drug effects
  • Humans
  • Imidazoles / pharmacology
  • Inhibitor of Apoptosis Proteins / metabolism*
  • Male
  • MicroRNAs / genetics*
  • Morpholines / pharmacology
  • Naphthoquinones / pharmacology
  • Neoplasm Invasiveness
  • Phosphatidylinositol 3-Kinases / metabolism*
  • Proto-Oncogene Proteins c-akt / metabolism*
  • Signal Transduction / drug effects
  • Survivin
  • Up-Regulation*

Substances

  • BIRC5 protein, human
  • Chromones
  • Imidazoles
  • Inhibitor of Apoptosis Proteins
  • MIRN542 microRNA, human
  • MicroRNAs
  • Morpholines
  • Naphthoquinones
  • Survivin
  • 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one
  • Proto-Oncogene Proteins c-akt
  • sepantronium