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@ARTICLE{Maleeva:889058,
author = {Maleeva, Galyna and Nin-Hill, Alba and Rustler, Karin and
Petukhova, Elena and Ponomareva, Daria and Mukhametova,
Elvira and Gomila-Juaneda, Alexandre and Wutz, Daniel and
Alfonso-Prieto, Mercedes and König, Burkhard and Gorostiza,
Pau and Bregestovski, Piotr},
title = {{S}ubunit-specific photocontrol of glycine receptors by
azobenzene-nitrazepam photoswitcher},
journal = {eNeuro},
volume = {8},
number = {1},
issn = {2373-2822},
address = {Washington, DC},
publisher = {Society for Neuroscience},
reportid = {FZJ-2021-00002},
pages = {ENEURO.0294-20.2020},
year = {2021},
abstract = {Photopharmacology is a unique approach that through a
combination of photochemistry methods and advanced life
science techniques allows the study and control of specific
biological processes, ranging from intracellular pathways to
brain circuits. Recently, a first photochromic channel
blocker of anion-selective GABAA receptors, Azo-NZ1, has
been described. In the present study using patch-clamp
technique in heterologous system and in mice brain slices,
site-directed mutagenesis and molecular modelling we provide
evidence of the interaction of Azo-NZ1 with glycine
receptors (GlyRs) and determine the molecular basis of this
interaction. Glycinergic synaptic neurotransmission
determines an important inhibitory drive in the vertebrate
nervous system and plays a crucial role in the control of
neuronal circuits in the spinal cord and brain stem. GlyRs
are involved in locomotion, pain sensation, breathing and
auditory function, as well as in the development of such
disorders as hyperekplexia, epilepsy and autism. Here we
demonstrate that Azo-NZ1 blocks in a UV dependent manner the
activity of alpha2 GlyRs (GlyR2), while being barely active
on alpha1 GlyRs (GlyR1). The site of Azo-NZ1 action is in
the chloride-selective pore of GlyR at the 2’ position of
transmembrane helix 2 and amino acids forming this site
determine the difference in Azo-NZ1 blocking activity
between GlyR2 and GlyR1. This subunit specific modulation is
also shown on motoneurons of brainstem slices from neonatal
mice that switch during development from expressing "foetal"
GlyR2 to "adult" GlyR1 receptors.},
cin = {IAS-5 / INM-9},
ddc = {610},
cid = {I:(DE-Juel1)IAS-5-20120330 / I:(DE-Juel1)INM-9-20140121},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524) / 5251 - Multilevel Brain Organization and
Variability (POF4-525) / 5252 - Brain Dysfunction and
Plasticity (POF4-525)},
pid = {G:(DE-HGF)POF4-5241 / G:(DE-HGF)POF4-5251 /
G:(DE-HGF)POF4-5252},
typ = {PUB:(DE-HGF)16},
pubmed = {33298457},
UT = {WOS:000641967200007},
doi = {10.1523/ENEURO.0294-20.2020},
url = {https://juser.fz-juelich.de/record/889058},
}