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@ARTICLE{Favila:272575,
author = {Favila, Natalia and Capece-Marsico, Jessica and Escribano,
Benjamin and Pacheco, Catarina and Bitterman, Yael and
Gründemann, Jan and Lüthi, Andreas and Krabbe, Sabine},
title = {{H}eterogeneous plasticity of amygdala interneurons in
associative learning and extinction},
journal = {bioRxiv beta},
address = {Cold Spring Harbor},
publisher = {Cold Spring Harbor Laboratory, NY},
reportid = {DZNE-2024-01196},
year = {2024},
abstract = {Neural circuits undergo experience-dependent plasticity to
form long-lasting memories. Excitatory projection neurons
are considered to be the primary neuronal substrate for
memory acquisition and storage. However, inhibitory
interneurons control the activity of projection neurons in a
in a spatially and temporally precise manner, yet their
contribution to memory acquisition, storage and expression
remains poorly understood. Here, we employ a miniature
microscope imaging approach to monitor the activity of large
amygdala interneuron populations in freely moving mice
during fear learning and extinction at the single cell
level. We find that amygdala interneurons display
mixed-selectivity and show complex plastic responses at both
the ensemble and single neuron level across the acquisition,
expression and extinction of aversive memories. In contrast
to bidirectional single cell plasticity across distinct fear
states, learning-induced changes at the population level
occur transiently during conditioning and do not consolidate
across days. Examining molecular interneuron subpopulations
revealed that disinhibitory vasoactive intestinal peptide
(VIP) expressing cells are predominantly activated by high
fear states. In contrast, somatostatin (SST) interneurons
display a preference for safety cues and thereby suppress
excitatory neuron responsiveness. However, responses of
individual neurons within the SST and VIP populations are
non-uniform, indicating the presence of functional subtypes
within classical molecularly-defined interneuron
populations. Taken together, we identify complex neuronal
plasticity within amygdala interneuron ensembles that goes
beyond a passive processing function, suggesting a critical
role of inhibitory microcircuit elements for memory
selectivity and stability.},
cin = {AG Krabbe / AG Gründemann},
ddc = {570},
cid = {I:(DE-2719)5000059 / I:(DE-2719)5000069},
pnm = {351 - Brain Function (POF4-351)},
pid = {G:(DE-HGF)POF4-351},
typ = {PUB:(DE-HGF)25},
doi = {10.1101/2024.09.29.612271},
url = {https://pub.dzne.de/record/272575},
}