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@ARTICLE{Byvaltcev:1010486,
author = {Byvaltcev, Egor and Behbood, Mahraz and Schleimer,
Jan-Hendrik and Gensch, Thomas and Semyanov, Alexey and
Schreiber, Susanne and Strauss, Ulf},
title = {{KCC}2 reverse mode helps to clear postsynaptically
released potassium at glutamatergic synapses},
journal = {Cell reports},
volume = {42},
number = {8},
issn = {2211-1247},
address = {[New York, NY]},
publisher = {Elsevier},
reportid = {FZJ-2023-03081},
pages = {112934 -},
year = {2023},
note = {This project has received funding from the EuropeanResearch
Council (ERC) under the Union’s Horizon 2020 research an
innovation program (grant agreement no. 864243) and from the
Einstein FoundationBerlin (EP-2021-621).},
abstract = {Extracellular potassium [K+]o elevation during synaptic
activity retrogradely modifies presynaptic release and
astrocytic uptake of glutamate. Hence, local K+ clearance
and replenishment mechanisms are crucial regulators of
glutamatergic transmission and plasticity. Based on
recordings of astrocytic inward rectifier potassium current
IKir and K+-sensitive electrodes as sensors of [K+]o as well
as on in silico modeling, we demonstrate that the neuronal
K+-Cl- co-transporter KCC2 clears local perisynaptic [K+]o
during synaptic excitation by operating in an
activity-dependent reversed mode. In reverse mode, KCC2
replenishes K+ in dendritic spines and complements clearance
of [K+]o, therewith attenuating presynaptic glutamate
release and shortening LTP. We thus demonstrate a
physiological role of KCC2 in neuron-glial interactions and
regulation of synaptic signaling and plasticity through the
uptake of postsynaptically released K+.},
cin = {IBI-1},
ddc = {610},
cid = {I:(DE-Juel1)IBI-1-20200312},
pnm = {5243 - Information Processing in Distributed Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5243},
typ = {PUB:(DE-HGF)16},
pubmed = {37537840},
UT = {WOS:001051595700001},
doi = {10.1016/j.celrep.2023.112934},
url = {https://juser.fz-juelich.de/record/1010486},
}