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@ARTICLE{Niklaus:1038495,
author = {Niklaus, Stephanie and Glasauer, Stella M. K. and
Kovermann, Peter and Farshori, Kulsum F. and Cadetti, Lucia
and Früh, Simon and Rieser, Nicolas N. and Gesemann,
Matthias and Zang, Jingjing and Fahlke, Christoph and
Neuhauss, Stephan C. F.},
title = {{G}lutamate transporters are involved in direct inhibitory
synaptic transmission in the vertebrate retina},
journal = {Open biology},
volume = {14},
number = {7},
issn = {2046-2441},
address = {London},
publisher = {Royal Society Publishing},
reportid = {FZJ-2025-01490},
pages = {240140},
year = {2024},
abstract = {In the central nervous system of vertebrates, glutamate
serves as the primary excitatory neurotransmitter. However,
in the retina, glutamate released from photoreceptors causes
hyperpolarization in post-synaptic ON-bipolar cells through
a glutamate-gated chloride current, which seems paradoxical.
Our research reveals that this current is modulated by two
excitatory glutamate transporters, EAAT5b and EAAT7. In the
zebrafish retina, these transporters are located at the
dendritic tips of ON-bipolar cells and interact with all
four types of cone photoreceptors. The absence of these
transporters leads to a decrease in ON-bipolar cell
responses, with eaat5b mutants being less severely affected
than eaat5b/eaat7 double mutants, which also exhibit altered
response kinetics. Biophysical investigations establish that
EAAT7 is an active glutamate transporter with a predominant
anion conductance. Our study is the first to demonstrate the
direct involvement of post-synaptic glutamate transporters
in inhibitory direct synaptic transmission at a central
nervous system synapse.},
cin = {IBI-1},
ddc = {570},
cid = {I:(DE-Juel1)IBI-1-20200312},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524) / DFG project G:(GEPRIS)426950122 - FOR 5046:
Integrative Analyse epithelialer SLC26 Anionentransporter
– von der molekularen Struktur zur Pathophysiologie
(426950122)},
pid = {G:(DE-HGF)POF4-5241 / G:(GEPRIS)426950122},
typ = {PUB:(DE-HGF)16},
doi = {10.1098/rsob.240140},
url = {https://juser.fz-juelich.de/record/1038495},
}