Sox2 expression in schwann cells inhibits myelination in vivo and induces influx of macrophages to the nerve

Sheridan L. Roberts, Xin Peng Dun, Robin D.S. Doddrell, Thomas Mindos, Louisa K. Drake, Mark W. Onaitis, Francesca Florio, Angelo Quattrini, Alison C. Lloyd, Maurizio D’Antonio, David B. Parkinson

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

Correct myelination is crucial for the function of the peripheral nervous system. Both positive and negative regulators within the axon and Schwann cell function to ensure the correct onset and progression of myelination during both development and following peripheral nerve injury and repair. The Sox2 transcription factor is well known for its roles in the development andmaintenance of progenitor and stem cell populations, but has also been proposed in vitro as a negative regulator of myelination in Schwann cells. We wished to test fully whether Sox2 regulates myelination in vivo and show here that, in mice, sustained Sox2 expression in vivo blocks myelination in the peripheral nerves and maintains Schwann cells in a proliferative non-differentiated state, which is also associated with increased inflammation within the nerve. The plasticity of Schwann cells allows them to re-myelinate regenerated axons following injury and we show that re-myelination is also blocked by Sox2 expression in Schwann cells. These findings identify Sox2 as a physiological regulator of Schwann cell myelination in vivo and its potential to play a role in disorders of myelination in the peripheral nervous system.

Original languageEnglish
Pages (from-to)3114-3125
Number of pages12
JournalDevelopment
Volume144
Issue number17
Early online date29 Aug 2017
DOIs
Publication statusPublished - 1 Sep 2017

Keywords

  • Mouse
  • Myelination
  • Peripheral nervous system
  • Repair
  • Schwann cell
  • Sox2

ASJC Scopus subject areas

  • Molecular Biology
  • Developmental Biology

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