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Neural cell adhesion molecule stimulates survival of premyelinating oligodendrocytes via the fibroblast growth factor receptor
Author(s) -
Palser Anne L.,
Norman Adele L.,
Saffell Jane L.,
Reynolds Richard
Publication year - 2009
Publication title -
journal of neuroscience research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.72
H-Index - 160
eISSN - 1097-4547
pISSN - 0360-4012
DOI - 10.1002/jnr.22248
Subject(s) - neural cell adhesion molecule , fibroblast growth factor receptor , microbiology and biotechnology , oligodendrocyte , fibroblast growth factor , biology , cell adhesion molecule , mapk/erk pathway , axon guidance , axon , neuroscience , receptor , signal transduction , cell adhesion , cell , central nervous system , myelin , biochemistry
Axonal signals are critical in promoting the survival and maturation of oligodendrocytes during myelination, with contact‐dependent signals thought to play a key role. However, the exact nature of these signals remains unclear. Neural cell adhesion molecule (NCAM) is expressed by both axons and oligodendrocytes and is ideally localized to transduce signals from the axon. This study sought to investigate the influence of NCAM on premyelinating oligodendrocytes in vitro. Both a soluble molecule comprising the extracellular domain of NCAM and a peptide derived from the fibroblast growth factor receptor (FGFR) binding motif within the first fibronectin domain stimulated a dose‐dependent increase in survival of premyelinating oligodendrocytes in vitro. The survival effect was blocked by a mitogen‐activated protein kinase (MAPK) inhibitor and an FGFR inhibitor, suggesting that activation of MAPK signalling pathways following interaction with the FGFR is involved in the survival effect of NCAM. Furthermore, NCAM presented in a cellular monolayer induced an increase in radial process outgrowth of oligodendrocyte progenitor cells. These data suggest that NCAM may play a role in axon–oligodendrocyte signalling during myelination, leading to an increase in oligodendrocyte survival and process outgrowth following axonal contact. © 2009 Wiley‐Liss, Inc.