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@ARTICLE{PrezMato:859963,
author = {Pérez-Mato, María and Iglesias-Rey, Ramón and
Vieites-Prado, Alba and Dopico-López, Antonio and Argibay,
Bárbara and Fernández-Susavila, Héctor and da
Silva-Candal, Andrés and Pérez-Díaz, Amparo and
Correa-Paz, Clara and Günther, Anne and Ávila-Gómez,
Paulo and Isabel Loza, M. and Baumann, A. and Castillo,
José and Sobrino, Tomás and Campos, Francisco},
title = {{B}lood glutamate {EAAT}2-cell grabbing therapy in cerebral
ischemia},
journal = {EBioMedicine},
volume = {39},
issn = {2352-3964},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-00769},
pages = {118-131},
year = {2019},
abstract = {BackgroundExcitatory amino acid transporter 2 (EAAT2) plays
a pivotal role in glutamate clearance in the adult brain,
thereby preventing excitotoxic effects. Considering the high
efficacy of EAAT2 for glutamate uptake, we hypothesized that
the expression of this transporter in mesenchymal stem cells
(MSCs) for systemic administration could yield a cell-based
glutamate-grabbing therapy, combining the intrinsic
properties of these cells with excitotoxic
protection.MethodsTo address this hypothesis, EAAT2-encoding
cDNA was introduced into MSCs and human embryonic kidney 293
cells (HEK cells) as the control cell line. EAAT2 expression
and functionality were evaluated by in vitro assays. Blood
glutamate-grabbing activity was tested in healthy and
ischemic rat models treated with 3 × 106 and
9 × 106 cells/animal.FindingsThe expression of EAAT2 in
both cell types conferred the expected glutamate-grabbing
activity in in vitro and in vivo studies. The functional
improvement observed in ischemic rats treated with
EAAT2–HEK at low dose, confirmed that this effect was
indeed mediated by the glutamate-grabbing activity
associated with EAAT2 functionality. Unexpectedly, both cell
doses of non-transfected MSCs induced higher protection than
transfected EAAT2–MSCs by another mechanism independent of
the glutamate-grabbing capacity.InterpretationAlthough the
transfection procedure most likely interferes with some of
the intrinsic protective mechanisms of mesenchymal cells,
the results show that the induced expression of EAAT2 in
cells represents a novel alternative to mitigate the
excitotoxic effects of glutamate and paves the way to
combine this strategy with current cell therapies for
cerebral ischemia.},
cin = {ICS-4},
ddc = {610},
cid = {I:(DE-Juel1)ICS-4-20110106},
pnm = {552 - Engineering Cell Function (POF3-552)},
pid = {G:(DE-HGF)POF3-552},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30555045},
UT = {WOS:000456677400024},
doi = {10.1016/j.ebiom.2018.11.024},
url = {https://juser.fz-juelich.de/record/859963},
}