Injury Signals Cooperate with Nf1 Loss to Relieve the Tumor-Suppressive Environment of Adult Peripheral Nerve

Sara Ribeiro, Ilaria Napoli, Ian J. White, Simona Parrinello, Adrienne M. Flanagan, Ueli Suter, Luis F. Parada, Alison C. Lloyd

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

Schwann cells are highly plastic cells that dedifferentiate to a progenitor-like state following injury. However, deregulation of this plasticity, may be involved in the formation of neurofibromas, mixed-cell tumors of Schwann cell (SC) origin that arise upon loss ofNF1. Here, we show that adult myelinating SCs (mSCs) are refractory to Nf1 loss. However, in thecontext of injury, Nf1-deficient cells display opposing behaviors along the wounded nerve; distal totheinjury, Nf1-/- mSCs redifferentiate normally, whereas at the wound site Nf1-/- mSCs give rise toneurofibromas in both Nf1+/+ and Nf1+/- backgrounds. Tracing experiments showed that distinct cell types within the tumor derive from Nf1-deficient SCs. This model of neurofibroma formation demonstrates that neurofibromas can originate from adult SCs and that the nerve environment can switch from tumor suppressive to tumor promoting at a site of injury. These findings have implications for both the characterization and treatment of neurofibromas

Original languageEnglish (US)
Pages (from-to)126-136
Number of pages11
JournalCell Reports
Volume5
Issue number1
DOIs
StatePublished - Oct 17 2013

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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    Ribeiro, S., Napoli, I., White, I. J., Parrinello, S., Flanagan, A. M., Suter, U., Parada, L. F., & Lloyd, A. C. (2013). Injury Signals Cooperate with Nf1 Loss to Relieve the Tumor-Suppressive Environment of Adult Peripheral Nerve. Cell Reports, 5(1), 126-136. https://doi.org/10.1016/j.celrep.2013.08.033