Downregulation of miR-130a promotes cell growth and epithelial to mesenchymal transition by activating HMGB2 in glioma

Int J Biochem Cell Biol. 2017 Dec:93:25-31. doi: 10.1016/j.biocel.2017.08.010. Epub 2017 Aug 26.

Abstract

Aberrant expression of miR-130a is usually found in cancer studies; however, the role of miR-130a has seldom been reported in glioma. We explored miR-130a's function and the underlying mechanism in glioma. It was found that miR-130a expression was significantly down-regulated in glioma tissues and cell lines. Overexpression of miR-130a decreased glioma cell growth and invasion both in vitro and in vivo. We identified the oncogene HMGB2 as a downstream target of miR-130a by using luciferase and western blot assays. Knockdown of HMGB2 mimicked the effect of miR-130a in glioma cells. Taken together, our study demonstrate that miR-130a may function as a tumor suppressor in glioma and suggest that miR-130a is a potential therapeutic target for glioma patients.

Keywords: Glioma; HMGB2; miR-130a.

MeSH terms

  • Cell Line, Tumor
  • Down-Regulation*
  • Epithelial-Mesenchymal Transition*
  • Gene Expression Regulation, Neoplastic*
  • Genes, Tumor Suppressor*
  • Glioma / genetics
  • Glioma / metabolism*
  • HMGB2 Protein / genetics
  • HMGB2 Protein / metabolism*
  • Humans
  • MicroRNAs / biosynthesis*
  • MicroRNAs / genetics
  • Neoplasm Proteins / genetics
  • Neoplasm Proteins / metabolism*
  • RNA, Neoplasm / biosynthesis*
  • RNA, Neoplasm / genetics

Substances

  • HMGB2 Protein
  • MIRN130 microRNA, human
  • MicroRNAs
  • Neoplasm Proteins
  • RNA, Neoplasm