The Neurotrophin Receptor p75NTR as a Positive Modulator of Myelination

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Science  08 Nov 2002:
Vol. 298, Issue 5596, pp. 1245-1248
DOI: 10.1126/science.1076595

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Schwann cells in developing and regenerating peripheral nerves express elevated levels of the neurotrophin receptor p75NTR. Neurotrophins are key mediators of peripheral nervous system myelination. Our results show that myelin formation is inhibited in the absence of functional p75NTR and enhanced by blocking TrkC activity. Moreover, the enhancement of myelin formation by endogenous brain-derived neurotrophic factor is mediated by the p75NTR receptor, whereas TrkC receptors are responsible for neurotrophin-3 inhibition. Thus p75NTR and TrkC receptors have opposite effects on myelination.

  • * These authors contributed equally to this work.

  • To whom correspondence should be addressed. E-mail: eshooter{at}

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