Reconstructing and reprogramming the tumor-propagating potential of glioblastoma stem-like cells

Cell. 2014 Apr 24;157(3):580-94. doi: 10.1016/j.cell.2014.02.030. Epub 2014 Apr 10.

Abstract

Developmental fate decisions are dictated by master transcription factors (TFs) that interact with cis-regulatory elements to direct transcriptional programs. Certain malignant tumors may also depend on cellular hierarchies reminiscent of normal development but superimposed on underlying genetic aberrations. In glioblastoma (GBM), a subset of stem-like tumor-propagating cells (TPCs) appears to drive tumor progression and underlie therapeutic resistance yet remain poorly understood. Here, we identify a core set of neurodevelopmental TFs (POU3F2, SOX2, SALL2, and OLIG2) essential for GBM propagation. These TFs coordinately bind and activate TPC-specific regulatory elements and are sufficient to fully reprogram differentiated GBM cells to "induced" TPCs, recapitulating the epigenetic landscape and phenotype of native TPCs. We reconstruct a network model that highlights critical interactions and identifies candidate therapeutic targets for eliminating TPCs. Our study establishes the epigenetic basis of a developmental hierarchy in GBM, provides detailed insight into underlying gene regulatory programs, and suggests attendant therapeutic strategies. PAPERCLIP:

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Basic Helix-Loop-Helix Transcription Factors / metabolism
  • Brain Neoplasms / genetics*
  • Brain Neoplasms / metabolism
  • Brain Neoplasms / pathology*
  • Cell Differentiation
  • Cell Line, Tumor
  • Cells, Cultured
  • Co-Repressor Proteins / metabolism
  • Epigenesis, Genetic
  • Gene Expression Regulation, Neoplastic
  • Glioblastoma / genetics*
  • Glioblastoma / metabolism
  • Glioblastoma / pathology*
  • Humans
  • Neoplastic Stem Cells / metabolism
  • Neoplastic Stem Cells / pathology*
  • Nerve Tissue Proteins / metabolism
  • Oligodendrocyte Transcription Factor 2
  • Regulatory Elements, Transcriptional
  • Transcription Factors / metabolism

Substances

  • Basic Helix-Loop-Helix Transcription Factors
  • Co-Repressor Proteins
  • Nerve Tissue Proteins
  • OLIG2 protein, human
  • Oligodendrocyte Transcription Factor 2
  • Rcor2 protein, human
  • Transcription Factors

Associated data

  • GEO/GSE54792