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@ARTICLE{Martineau:841726,
author = {Martineau, Magalie and Guzman, Raul and Fahlke, Christoph
and Klingauf, Jürgen},
title = {{VGLUT}1 functions as a glutamate/proton exchanger with
chloride channel activity in hippocampal glutamatergic
synapses},
journal = {Nature Communications},
volume = {8},
number = {1},
issn = {2041-1723},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2018-00034},
pages = {2279},
year = {2017},
abstract = {Glutamate is the major excitatory transmitter in the
vertebrate nervous system. To maintain synaptic efficacy,
recycling synaptic vesicles (SV) are refilled with glutamate
by vesicular glutamate transporters (VGLUTs). The dynamics
and mechanism of glutamate uptake in intact neurons are
still largely unknown. Here, we show by live-cell imaging
with pH- and chloride-sensitive fluorescent probes in
cultured hippocampal neurons of wild-type and
VGLUT1-deficient mice that in SVs VGLUT functions as a
glutamate/proton exchanger associated with a channel-like
chloride conductance. After endocytosis most internalized
Cl− is substituted by glutamate in an electrically, and
presumably osmotically, neutral manner, and this process is
driven by both the Cl− gradient itself and the proton
motive force provided by the vacuolar H+-ATPase. Our results
shed light on the transport mechanism of VGLUT under
physiological conditions and provide a framework for how
modulation of glutamate transport via Cl− and pH can
change synaptic strength.},
cin = {ICS-4},
ddc = {500},
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:29273736},
UT = {WOS:000418570600024},
doi = {10.1038/s41467-017-02367-6},
url = {https://juser.fz-juelich.de/record/841726},
}