Generation of neural progenitor cells by chemical cocktails and hypoxia

Cell Res. 2014 Jun;24(6):665-79. doi: 10.1038/cr.2014.32. Epub 2014 Mar 18.

Abstract

Neural progenitor cells (NPCs) can be induced from somatic cells by defined factors. Here we report that NPCs can be generated from mouse embryonic fibroblasts by a chemical cocktail, namely VCR (V, VPA, an inhibitor of HDACs; C, CHIR99021, an inhibitor of GSK-3 kinases and R, Repsox, an inhibitor of TGF-β pathways), under a physiological hypoxic condition. These chemical-induced NPCs (ciNPCs) resemble mouse brain-derived NPCs regarding their proliferative and self-renewing abilities, gene expression profiles, and multipotency for different neuroectodermal lineages in vitro and in vivo. Further experiments reveal that alternative cocktails with inhibitors of histone deacetylation, glycogen synthase kinase, and TGF-β pathways show similar efficacies for ciNPC induction. Moreover, ciNPCs can also be induced from mouse tail-tip fibroblasts and human urinary cells with the same chemical cocktail VCR. Thus our study demonstrates that lineage-specific conversion of somatic cells to NPCs could be achieved by chemical cocktails without introducing exogenous factors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Hypoxia*
  • Cell Lineage
  • Cell Proliferation / drug effects
  • Cells, Cultured
  • Cluster Analysis
  • Enzyme Inhibitors / pharmacology*
  • Gene Expression Profiling
  • Glycogen Synthase Kinase 3 / antagonists & inhibitors
  • Glycogen Synthase Kinase 3 / metabolism
  • Histone Demethylases / antagonists & inhibitors
  • Histone Demethylases / metabolism
  • Humans
  • Mice
  • Mice, Inbred C57BL
  • Neural Stem Cells / drug effects*
  • Neural Stem Cells / metabolism
  • Pyrazoles / pharmacology*
  • Pyridines / pharmacology*
  • Pyrimidines / pharmacology*
  • Transcriptome / drug effects
  • Transforming Growth Factor beta / antagonists & inhibitors
  • Transforming Growth Factor beta / metabolism
  • Valproic Acid / pharmacology*

Substances

  • Chir 99021
  • Enzyme Inhibitors
  • Pyrazoles
  • Pyridines
  • Pyrimidines
  • RepSox
  • Transforming Growth Factor beta
  • Valproic Acid
  • Histone Demethylases
  • Glycogen Synthase Kinase 3