Cited by 129Treatment of Major DepressionNeuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on Behavior

Inhibition of GABA interneurons in the mPFC is sufficient and necessary for rapid antidepressant responses

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Fogaça, Manoela V., Wu, Min, Li, Chan, Li, Xiao-Yuan, Picciotto, Marina R., Duman, Ronald S.·2021·Molecular Psychiatry

Abstract

Major depressive disorder (MDD) is associated with alterations of GABAergic interneurons, notably somatostatin (Sst) as well as parvalbumin (Pvalb), in cortical brain areas. In addition, the antidepressant effects of rapid-acting drugs are thought to occur via inhibition of GABA interneurons. However, the impact of these interneuron subtypes in affective behaviors as well as in the effects of rapid-acting antidepressants remains to be determined. Here, we used a Cre-dependent DREADD-chemogenetic approach to determine if inhibition of GABA interneurons in the mPFC of male mice is sufficient to produce antidepressant actions, and conversely if activation of these interneurons blocks the rapid and sustained antidepressant effects of scopolamine, a nonselective acetylcholine muscarinic receptor antagonist. Chemogenetic inhibition of all GABA interneurons (Gad1+), as well as Sst+ and Pvalb+ subtypes in the mPFC produced dose and time-dependent antidepressant effects in the forced swim and novelty suppressed feeding tests, and increased synaptic plasticity. In contrast, stimulation of Gad1, Sst, or Pvalb interneurons in mPFC abolished the effects of scopolamine and prevented scopolamine induction of synaptic plasticity. The results demonstrate that transient inhibition of GABA interneurons promotes synaptic plasticity that underlies rapid antidepressant responses.

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Crossref · 10.1038/s41380-020-00916-y

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  • Chemogenetic inhibition of somatostatin- and parvalbumin-expressing interneurons in the medial prefrontal cortex mimics antidepressant effects in the forced swim test and other tasks.

    “Similarly, chemogenetic inhibition of either somatostatin-and parvalbumin-expressing interneurons in the mPFC mimicked the effects produced by antidepressants in the FST and other tasks, suggesting that transient inhibition of GABAergic interneurons contributes to the actions of rapidly”
  • Transient inhibition of GABAergic interneurons contributes to the actions of rapidly acting antidepressants.

    “Similarly, chemogenetic inhibition of either somatostatin-and parvalbumin-expressing interneurons in the mPFC mimicked the effects produced by antidepressants in the FST and other tasks, suggesting that transient inhibition of GABAergic interneurons contributes to the actions of rapidly”

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Authors
Fogaça, M. V., Wu, M., Li, C., Li, X.-Y., Picciotto, M. R., & Duman, R. S.
Affiliations
Yale University (US)
Corresponding author
Fogaça, Manoela V.
Venue
Molecular Psychiatry
Published
2020-10-17
Volume
26
Issue
7
Pages
3277-3291
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W3093084992
Cited by
129
References
63
Citations by year
2026: 27 · 2025: 31 · 2024: 17 · 2023: 26 · 2022: 19 · 2021: 9
FWCI
8.09
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
U.S. Department of Health & Human Services | NIH | National Institute of Mental Health (MH093897, MH105910)
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
GABAergic interneurons, medial prefrontal cortex, major depressive disorder, rapid-acting antidepressants, scopolamine, somatostatin interneurons, parvalbumin interneurons, GAD1, synaptic plasticity, chemogenetic inhibition, forced swim test, novelty-suppressed feeding, depression
MeSH terms
Animals, Antidepressive Agents, Depressive Disorder, Major, Major Depressive Disorder, gamma-Aminobutyric Acid, Interneurons, Male, Parvalbumins, Prefrontal Cortex, Mice

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