Perinatal epidermal growth factor receptor blockade prevents peripheral nerve disruption in a mouse model reminiscent of benign World Health Organization grade I neurofibroma

Jianqiang Wu, Jason T. Crimmins, Kelly R. Monk, Jon P. Williams, Maureen E. Fitzgerald, Susan Tedesco, Nancy Ratner

Research output: Contribution to journalArticle

15 Scopus citations


Benign peripheral nerve tumors called neurofibromas are a major source of morbidity for patients with neurofibromatosis type 1. Some neurofibroma Schwann cells aberrantly express the epidermal growth factor receptor (MGFR). In a mouse model in which the CNPase promoter drives expression of human EGFR in Schwann cells, nerves develop hypertrophy, mast cell accumulation, collagen deposition, disruption of axon-glial interactions, characteristics of neurofibroma and are hypoalgesic. Administration of the EGFR antagonist cetuximab (EMC-C225) for 2 weeks beginning at birth in CNPase-hEGFR mice normalized all pathologies at 3 months of age as evaluated by hotplate testing or histology and by electron microscopy. Mast cell chemoattractants brain-derived neurotropbic factor, monocyte chemoattractant protein-1, and transforming growth factor-β1 which may account for mast cell accumulation and fibrosis, were reduced by cetuximab. Later treatment was much less effective. A birth to 2-week pulse of cetuximab blocked hEGFR phosphorylation and Schwann cell proliferation in perinatal mutant nerve, so CNPase-hEGFR Schwann cell numbers correlate with the cetuximab effect. A >250-fold enlarged population of EGFR+Vp75+ eels was detected in newborn Nf1+/- mouse nerves. These results suggest the existence of an EGFR+ cell enriched in the perinatal period capable of driving complex changes characteristic of neurofibroina formation.

Original languageEnglish (US)
Pages (from-to)1686-1696
Number of pages11
JournalAmerican Journal of Pathology
Issue number5
StatePublished - May 2006


ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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