Glial conversion of SVZ-derived committed neuronal precursors after ectopic grafting into the adult brain

Mol Cell Neurosci. May-Jun 2006;32(1-2):187-98. doi: 10.1016/j.mcn.2006.04.003. Epub 2006 May 30.

Abstract

In the adult mouse forebrain, large numbers of neuronal precursors, destined to become GABA- and dopamine-producing interneurons of the olfactory bulb (OB), are generated in the subventricular zone (SVZ). Although this neurogenic system represents a potential reservoir of stem and progenitor cells for brain repair approaches, information about the survival and differentiation of SVZ-derived cells in ectopic brain regions is still fragmentary. We show here that ectopic grafting of SVZ tissue gave rise to two morphologically distinguishable cell types displaying oligodendrocytic or astrocytic characteristics. Since SVZ tissue contains neuronal and glial progenitors, we used magnetic cell sorting to deplete A2B5+ glial progenitors from the dissociated SVZ and to positively select cells that express PSA-NCAM. This procedure allowed the purification of neuronal precursors expressing TUJ1, DCX and GAD65/67. Transplantation of these cells led again to the generation of the same two glial cell types, showing that committed interneuron precursors undergo glial differentiation outside their normal environment.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Animals, Newborn
  • Astrocytes / cytology
  • Astrocytes / physiology
  • Biomarkers / metabolism
  • Brain Tissue Transplantation / methods*
  • Cell Differentiation / physiology*
  • Cell Lineage / physiology*
  • Cell Separation
  • Cell Survival / physiology
  • Glutamate Decarboxylase / metabolism
  • Interneurons / cytology
  • Interneurons / metabolism
  • Isoenzymes / metabolism
  • Lateral Ventricles / cytology
  • Mice
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Microtubule-Associated Proteins / metabolism
  • Neural Cell Adhesion Molecule L1 / metabolism
  • Neuroglia / cytology
  • Neuroglia / physiology*
  • Neurons / cytology
  • Neurons / physiology*
  • Neuropeptides / metabolism
  • Oligodendroglia / cytology
  • Oligodendroglia / physiology
  • Sialic Acids / metabolism
  • Stem Cell Transplantation
  • Stem Cells / cytology
  • Stem Cells / physiology*
  • Tubulin / metabolism

Substances

  • Biomarkers
  • Isoenzymes
  • Microtubule-Associated Proteins
  • Neural Cell Adhesion Molecule L1
  • Neuropeptides
  • Sialic Acids
  • Tubulin
  • beta3 tubulin, mouse
  • doublecortin protein
  • polysialyl neural cell adhesion molecule
  • Glutamate Decarboxylase
  • glutamate decarboxylase 2