Peripheral nerve regeneration is delayed in neuropilin 2-deficient mice

Peter Bannerman, Jahan Ara, Ashleigh Hahn, Lindy Hong, Erica McCauley, Katie Friesen, David E Pleasure

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Peripheral nerve transection or crush induces expression of class 3 semaphorins by epineurial and perineurial cells at the injury site and of the neuropilins neuropilin-1 and neuropilin-2 by Schwann and perineurial cells in the nerve segment distal to the injury. Neuropilin-dependent class 3 semaphorin signaling guides axons during neural development, but the significance of this signaling system for regeneration of adult peripheral nerves is not known. To test the hypothesis that neuropilin-2 facilitates peripheral-nerve axonal regeneration, we crushed sciatic nerves of adult neuropilin-2-deficient and littermate control mice. Axonal regeneration through the crush site and into the distal nerve segment, repression by the regenerating axons of Schwann cell p75 neurotrophin receptor expression, remyelination of the regenerating axons, and recovery of normal gait were all signi.cantly slower in the neuropilin-2-deficient mice than in the control mice. Thus, neuropilin-2 facilitates peripheral-nerve axonal regeneration.

Original languageEnglish (US)
Pages (from-to)3163-3169
Number of pages7
JournalJournal of Neuroscience Research
Issue number14
StatePublished - 2008


  • Axons
  • Peripheral nervous system
  • Schwann cells
  • Sciatic nerve
  • Semaphorins

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience


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