MicroRNAs involved in chemo- and radioresistance of high-grade gliomas

Tumour Biol. 2013 Aug;34(4):1969-78. doi: 10.1007/s13277-013-0772-5. Epub 2013 Apr 9.


High-grade gliomas (HGGs) are malignant primary brain tumors of glial cell origin. Despite optimal course of treatment, including maximal surgical resection followed by adjuvant chemo- and/or radiotherapy, the prognosis still remains poor. The main reason is the commonly occurring chemo- and radioresistance of these tumors. In recent years, several signaling pathways, especially PI3K/AKT and ATM/CHK2/p53, have been linked to the resistance of gliomas. Moreover, additional studies have shown that these pathways are significantly regulated by microRNAs (miRNAs), short endogenous RNA molecules that modulate gene expression and control many biological processes including apoptosis, proliferation, cell cycle, invasivity, and angiogenesis. MiRNAs are not only highly deregulated in gliomas, their expression signatures have also been shown to predict prognosis and therapy response. Therefore, they present promising biomarkers and therapeutic targets that might overcome the resistance to treatment and improve prognosis of glioma patients. In this review, we summarize the current knowledge of the functional role of miRNAs in gliomas resistance to chemo- and radiotherapy.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Apoptosis
  • Ataxia Telangiectasia Mutated Proteins
  • Brain Neoplasms / drug therapy
  • Brain Neoplasms / genetics
  • Brain Neoplasms / radiotherapy
  • Cell Cycle Proteins / metabolism
  • Checkpoint Kinase 2
  • DNA-Binding Proteins / metabolism
  • Drug Resistance, Neoplasm / genetics*
  • Glioma* / drug therapy
  • Glioma* / genetics
  • Glioma* / radiotherapy
  • Humans
  • MicroRNAs / genetics*
  • MicroRNAs / metabolism*
  • Neoplasm Invasiveness
  • Phosphatidylinositol 3-Kinases / metabolism
  • Protein Serine-Threonine Kinases / metabolism
  • Proto-Oncogene Proteins c-akt / metabolism
  • Radiation Tolerance / genetics*
  • Tumor Suppressor Protein p53 / metabolism
  • Tumor Suppressor Proteins / metabolism


  • Cell Cycle Proteins
  • DNA-Binding Proteins
  • MicroRNAs
  • TP53 protein, human
  • Tumor Suppressor Protein p53
  • Tumor Suppressor Proteins
  • Checkpoint Kinase 2
  • ATM protein, human
  • Ataxia Telangiectasia Mutated Proteins
  • CHEK2 protein, human
  • Protein Serine-Threonine Kinases
  • Proto-Oncogene Proteins c-akt