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@ARTICLE{Klein:153654,
author = {Klein, Rebecca and Blaschke, Stefan and Neumaier, Bernd and
Endepols, Heike and Graf, Rudolf and Keuters, Meike and
Hucklenbroich, Joerg and Albrechtsen, Morten and Rees,
Stephen and Fink, Gereon Rudolf and Schroeter, Michael and
Rueger, Maria Adele},
title = {{T}he synthetic {NCAM} mimetic peptide {FGL} mobilizes
neural stem cells in vitro and in vivo},
journal = {Stem cell reviews and reports},
volume = {10},
number = {4},
issn = {1558-6804},
address = {New York, NY},
publisher = {Springer},
reportid = {FZJ-2014-03158},
pages = {539-547},
year = {2014},
abstract = {The neural cell adhesion molecule (NCAM) plays a role in
neurite outgrowth, synaptogenesis, and neuronal
differentiation. The NCAM mimetic peptide FG Loop (FGL)
promotes neuronal survival in vitro and enhances spatial
learning and memory in rats. We here investigated the
effects of FGL on neural stem cells (NSC) in vitro and in
vivo. In vitro, cell proliferation of primary NSC was
assessed after exposure to various concentrations of NCAM or
FGL. The differentiation potential of NCAM- or FGL-treated
cells was assessed immunocytochemically. To investigate its
influence on endogenous NSC in vivo, FGL was injected
subcutaneously into adult rats. The effects on NSC
mobilization were studied both via non-invasive positron
emission tomography (PET) imaging using the tracer
[18F]-fluoro-l-thymidine ([18F]FLT), as well as with
immunohistochemistry. Only FGL significantly enhanced NSC
proliferation in vitro, with a maximal effect at 10 μg/ml.
During differentiation, NCAM promoted neurogenesis, while
FGL induced an oligodendroglial phenotype; astrocytic
differentiation was neither affected by NCAM or FGL. Those
differential effects of NCAM and FGL on differentiation were
mediated through different receptors. After FGL-injection in
vivo, proliferative activity of NSC in the subventricular
zone (SVZ) was increased (compared to placebo-treated
animals). Moreover, non-invasive imaging of cell
proliferation using [18F]FLT-PET supported an FGL-induced
mobilization of NSC from both the SVZ and the hippocampus.
We conclude that FGL robustly induces NSC mobilization in
vitro and in vivo, and supports oligodendroglial
differentiation. This capacity renders FGL a promising agent
to facilitate remyelinization, which may eventually make FGL
a drug candidate for demyelinating neurological disorders},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {333 - Pathophysiological Mechanisms of Neurological and
Psychiatric Diseases (POF2-333) / 89572 - (Dys-)function and
Plasticity (POF2-89572)},
pid = {G:(DE-HGF)POF2-333 / G:(DE-HGF)POF2-89572},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000340510300008},
pubmed = {pmid:24817672},
doi = {10.1007/s12015-014-9512-5},
url = {https://juser.fz-juelich.de/record/153654},
}