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@ARTICLE{Cheung:906738,
author = {Cheung, Giselle and Bataveljic, Danijela and Visser, Josien
and Kumar, Naresh and Moulard, Julien and Dallérac, Glenn
and Mozheiko, Daria and Rollenhagen, Astrid and Ezan, Pascal
and Mongin, Cédric and Chever, Oana and Bemelmans,
Alexis-Pierre and Lübke, Joachim and Leray, Isabelle and
Rouach, Nathalie},
title = {{P}hysiological synaptic activity and recognition memory
require astroglial glutamine},
journal = {Nature Communications},
volume = {13},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {FZJ-2022-01660},
pages = {753},
year = {2022},
abstract = {Presynaptic glutamate replenishment is fundamental to brain
function. In high activity regimes, such as epileptic
episodes, this process is thought to rely on the
glutamate-glutamine cycle between neurons and astrocytes.
However the presence of an astroglial glutamine supply, as
well as its functional relevance in vivo in the healthy
brain remain controversial, partly due to a lack of tools
that can directly examine glutamine transfer. Here, we
generated a fluorescent probe that tracks glutamine in live
cells, which provides direct visual evidence of an
activity-dependent glutamine supply from astroglial networks
to presynaptic structures under physiological conditions.
This mobilization is mediated by connexin43, an astroglial
protein with both gap-junction and hemichannel functions,
and is essential for synaptic transmission and object
recognition memory. Our findings uncover an indispensable
recruitment of astroglial glutamine in physiological
synaptic activity and memory via an unconventional pathway,
thus providing an astrocyte basis for cognitive processes.},
cin = {INM-10},
ddc = {500},
cid = {I:(DE-Juel1)INM-10-20170113},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525) / AstroWireSyn - Wiring synaptic circuits with
astroglial connexins: mechanisms, dynamics and impact for
critical period plasticity (683154) / EU-GliaPhD - Training,
Research and Raising of Public Awareness in Cell Biology and
Pathology of Neuroglia (722053) / ASTRORIPPLES - Functional
roles of astroglial connexins in the generation of sharp
wave ripples (622289)},
pid = {G:(DE-HGF)POF4-5251 / G:(EU-Grant)683154 /
G:(EU-Grant)722053 / G:(EU-Grant)622289},
typ = {PUB:(DE-HGF)16},
pubmed = {35136061},
UT = {WOS:000757297200017},
doi = {10.1038/s41467-022-28331-7},
url = {https://juser.fz-juelich.de/record/906738},
}