Adult spinal cord progenitor cells are repelled by netrin-1 in the embryonic and injured adult spinal cord Academic Article uri icon


MeSH Major

  • Nerve Growth Factors
  • Spinal Cord
  • Spinal Cord Injuries
  • Stem Cells
  • Tumor Suppressor Proteins


  • Adult neural progenitor cells (aNPCs) exhibit limited migration in vivo with the exception of the rostral migratory stream and injury-induced movement. Surprisingly little is known regarding those signals regulating attraction or inhibition of the aNPC. These studies demonstrate that aNPCs respond principally to a repulsive cue expressed at the embryonic floor plate (FP) and also the injured adult CNS. Adult spinal cord progenitor cells (aSCPs) were seeded onto organotypic slice preparations of the intact embryonic or injured adult spinal cord. Cell migration assays combined with genetic and molecular perturbation of FP-derived migration cues or aSCP receptors establish netrin-1 (Ntn-1) but not Slit-2, Shh, or Ephrin-B3 as the primary FP-derived repellant. When slices were prepared from injured spinal cord, aSCP migration away from the injury core was Ntn-1-dependent. These studies establish Ntn-1 as a critical regulator of aSCP migration in the intact and injured CNS.

publication date

  • November 6, 2007



  • Academic Article



  • eng

PubMed Central ID

  • PMC2077035

Digital Object Identifier (DOI)

  • 10.1073/pnas.0703240104

PubMed ID

  • 17978191

Additional Document Info

start page

  • 17837

end page

  • 42


  • 104


  • 45