Pluripotent stem cells engrafted into the normal or lesioned adult rat spinal cord are restricted to a glial lineage

Qi lin Cao, Y. Ping Zhang, Russell M. Howard, Winston M. Walters, Pantelis Tsoulfas, Scott R. Whittemore

Research output: Contribution to journalArticle

400 Scopus citations

Abstract

Proliferating populations of undifferentiated neural stem cells were isolated from the embryonic day 14 rat cerebral cortex or the adult rat subventricular zone. These cells were pluripotent through multiple passages, retaining the ability to differentiate in vitro into neurons, astrocytes, and oligodendrocytes. Two weeks to 2 months after engraftment of undifferentiated, BrdU-labeled stem cells into the normal adult spinal cord, large numbers of surviving cells were seen. The majority of the cells differentiated with astrocytic phenotype, although some oligodendrocytes and undifferentiated, nestin-positive cells were detected; NeuN-positive neurons were not seen. Labeled cells were also engrafted into the contused adult rat spinal cord (moderate NYU Impactor injury), either into the lesion cavity or into the white or gray matter both rostral and caudal to the injury epicenter. Up to 2 months postgrafting, the majority of cells either differentiated into GFAP-positive astrocytes or remained nestin positive. No BrdU-positive neurons or oligodendrocytes were observed. These results show robust survival of engrafted stem cells, but a differentiated phenotype restricted to glial lineages. We suggest that in vitro induction prior to transplantation will be necessary for these cells to differentiate into neurons or large numbers of oligodendrocytes.

Original languageEnglish (US)
Pages (from-to)48-58
Number of pages11
JournalExperimental Neurology
Volume167
Issue number1
DOIs
StatePublished - Jan 1 2001

Keywords

  • Astrocytes
  • Oligodendrocytes
  • Rat
  • Spinal cord
  • Stem cells
  • Transplantation

ASJC Scopus subject areas

  • Neurology
  • Neuroscience(all)

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