Dopamine-mediated striatal activity and function is enhanced in GlyRα2 knockout animals.
Behavioral neuroscience
Neuroscience
Journal
iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038
Informations de publication
Date de publication:
18 Aug 2023
18 Aug 2023
Historique:
received:
22
12
2022
revised:
27
04
2023
accepted:
12
07
2023
medline:
9
8
2023
pubmed:
9
8
2023
entrez:
9
8
2023
Statut:
epublish
Résumé
The glycine receptor alpha 2 (GlyRα2) is a ligand-gated ion channel which upon activation induces a chloride conductance. Here, we investigated the role of GlyRα2 in dopamine-stimulated striatal cell activity and behavior. We show that depletion of GlyRα2 enhances dopamine-induced increases in the activity of putative dopamine D1 receptor-expressing striatal projection neurons, but does not alter midbrain dopamine neuron activity. We next show that the locomotor response to d-amphetamine is enhanced in GlyRα2 knockout animals, and that this increase correlates with c-fos expression in the dorsal striatum. 3-D modeling revealed an increase in the neuronal ensemble size in the striatum in response to D-amphetamine in GlyRα2 KO mice. Finally, we show enhanced appetitive conditioning in GlyRα2 KO animals that is likely due to increased motivation, but not changes in associative learning or hedonic response. Taken together, we show that GlyRα2 is an important regulator of dopamine-stimulated striatal activity and function.
Identifiants
pubmed: 37554441
doi: 10.1016/j.isci.2023.107400
pii: S2589-0042(23)01477-3
pmc: PMC10404725
doi:
Types de publication
Journal Article
Langues
eng
Pagination
107400Informations de copyright
Crown Copyright © 2023.
Déclaration de conflit d'intérêts
The authors declare no competing interests.
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