RGD Reference Report - ShcA regulates neurite outgrowth stimulated by neural cell adhesion molecule but not by fibroblast growth factor 2: evidence for a distinct fibroblast growth factor receptor response to neural cell adhesion molecule activation. - Rat Genome Database

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ShcA regulates neurite outgrowth stimulated by neural cell adhesion molecule but not by fibroblast growth factor 2: evidence for a distinct fibroblast growth factor receptor response to neural cell adhesion molecule activation.

Authors: Hinsby, AM  Lundfald, L  Ditlevsen, DK  Korshunova, I  Juhl, L  Meakin, SO  Berezin, V  Bock, E 
Citation: Hinsby AM, etal., J Neurochem. 2004 Nov;91(3):694-703.
RGD ID: 1643187
Pubmed: PMID:15485499   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1471-4159.2004.02772.x   (Journal Full-text)

Homophilic binding in trans of the neural cell adhesion molecule (NCAM) mediates adhesion between cells and leads, via activation of intracellular signaling cascades, to neurite outgrowth in primary neurons as well as in the neuronal cell line PC12. NCAM mediates neurite extension in PC12 cells by two principal routes of signaling: NCAM/Fyn and NCAM/fibroblast growth factor receptor (FGFR), respectively. Previous studies have shown that activation of mitogen-activated protein kinases is a pivotal point of convergence in NCAM signaling, but the mechanisms behind this activation are not clear. Here, we investigated the involvement of adaptor proteins in NCAM and fibroblast growth factor 2 (FGF2)-mediated neurite outgrowth in the PC12-E2 cell line. We found that both FGFR substrate-2 and Grb2 play important roles in NCAM as well as in FGF2-stimulated events. In contrast, the docking protein ShcA was pivotal to neurite outgrowth induced by NCAM, but not by FGF2, in PC12 cells. Moreover, in rat cerebellar granule neurons, phosphorylation of ShcA was stimulated by an NCAM mimicking peptide, but not by FGF2. This activation was blocked by inhibitors of both FGFR and Fyn, indicating that NCAM activates FGFR signaling in a manner distinct from FGF2 stimulation, and regulates ShcA phosphorylation by the concerted efforts of the NCAM/FGFR as well as the NCAM/Fyn signaling pathway.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
neuron projection development  IMP 1643187 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Shc1  (SHC adaptor protein 1)


Additional Information