TY - JOUR
T1 - An NCAM-derived FGF-receptor agonist, the FGL-peptide, induces neurite outgrowth and neuronal survival in primary rat neurons
AU - Neiiendam, Johanne Louise
AU - Køhler, Lene Boding
AU - Christensen, Claus
AU - Li, Shizhong
AU - Pedersen, Martin Volmer
AU - Ditlevsen, Dorte Kornerup
AU - Kornum, Martin Kirkegaard
AU - Kiselyov, Vladislav V
AU - Berezin, Vladimir
AU - Bock, Elisabeth
N1 - Keywords: 1-Phosphatidylinositol 3-Kinase; Animals; Apoptosis; Caspase 3; Caspases; Cell Survival; Cells, Cultured; Cerebellum; Dopamine; Enzyme Activation; Hippocampus; MAP Kinase Signaling System; Mesencephalon; Neural Cell Adhesion Molecules; Neurites; Neurons; Peptide Fragments; Phosphorylation; Protein-Serine-Threonine Kinases; Proto-Oncogene Proteins; Proto-Oncogene Proteins c-akt; RNA, Messenger; Rats; Rats, Wistar; Receptors, Fibroblast Growth Factor
PY - 2004
Y1 - 2004
N2 - The Neural Cell Adhesion Molecule (NCAM) plays a crucial role in development of the central nervous system regulating cell migration, differentiation and synaptogenesis. NCAM mediates cell-cell adhesion through homophilic NCAM binding, subsequently resulting in activation of the fibroblast growth factor receptor (FGFR). NCAM-mediated adhesion leads to activation of various intracellular signal transduction pathways, including the Ras-mitogen activated protein kinase (MAPK) and the phosphatidylinositol-3-kinase (PI3K)-Akt pathways. A synthetic peptide derived from the second fibronectin type III module of NCAM, the FGL peptide, binds to and induces phosphorylation of FGFR without prior homophilic NCAM binding. We here present evidence that this peptide is able to mimic NCAM heterophilic binding to the FGFR by inducing neuronal differentiation as reflected by neurite outgrowth through a direct interaction with FGFR in primary cultures of three different neuronal cell types all expressing FGFR subtype 1: dopaminergic, hippocampal and cerebellar granule neurons. Moreover, we show that the FGL peptide promotes neuronal survival upon induction of cell death in the same three cell types. The effects of the FGL peptide are shown to depend on activation of FGFR and the MAPK and PI3K intracellular signalling pathways, all three kinases being necessary for the effects of FGL on neurite outgrowth and neuronal survival.
AB - The Neural Cell Adhesion Molecule (NCAM) plays a crucial role in development of the central nervous system regulating cell migration, differentiation and synaptogenesis. NCAM mediates cell-cell adhesion through homophilic NCAM binding, subsequently resulting in activation of the fibroblast growth factor receptor (FGFR). NCAM-mediated adhesion leads to activation of various intracellular signal transduction pathways, including the Ras-mitogen activated protein kinase (MAPK) and the phosphatidylinositol-3-kinase (PI3K)-Akt pathways. A synthetic peptide derived from the second fibronectin type III module of NCAM, the FGL peptide, binds to and induces phosphorylation of FGFR without prior homophilic NCAM binding. We here present evidence that this peptide is able to mimic NCAM heterophilic binding to the FGFR by inducing neuronal differentiation as reflected by neurite outgrowth through a direct interaction with FGFR in primary cultures of three different neuronal cell types all expressing FGFR subtype 1: dopaminergic, hippocampal and cerebellar granule neurons. Moreover, we show that the FGL peptide promotes neuronal survival upon induction of cell death in the same three cell types. The effects of the FGL peptide are shown to depend on activation of FGFR and the MAPK and PI3K intracellular signalling pathways, all three kinases being necessary for the effects of FGL on neurite outgrowth and neuronal survival.
U2 - 10.1111/j.1471-4159.2004.02779.x
DO - 10.1111/j.1471-4159.2004.02779.x
M3 - Journal article
C2 - 15525346
SN - 0022-3042
VL - 91
SP - 920
EP - 935
JO - Journal of Neurochemistry
JF - Journal of Neurochemistry
IS - 4
ER -