Cited by 83Neurotransmitter Receptor Influence on BehaviorNeuroendocrine regulation and behaviorNeuroscience and Neuropharmacology Research

Oxytocin functions as a spatiotemporal filter for excitatory synaptic inputs to VTA dopamine neurons

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Xiao, Lei, Priest, Michael F, Kozorovitskiy, Yevgenia·2018·eLife

Abstract

The experience of rewarding or aversive stimuli is encoded by distinct afferents to dopamine (DA) neurons of the ventral tegmental area (VTA). Several neuromodulatory systems including oxytocin regulate DA neuron excitability and synaptic transmission that process socially meaningful stimuli. We and others have recently characterized oxytocinergic modulation of activity in mouse VTA DA neurons, but the mechanisms underlying oxytocinergic modulation of synaptic transmission in DA neurons remain poorly understood. Here, we find that oxytocin application or optogenetic release decrease excitatory synaptic transmission, via long lasting, presynaptic, endocannabinoid-dependent mechanisms. Oxytocin modulation of excitatory transmission alters the magnitude of short and long-term depression. We find that only some glutamatergic projections to DA neurons express CB1 receptors. Optogenetic stimulation of three major VTA inputs demonstrates that oxytocin modulation is limited to projections that show evidence of CB1R transcripts. Thus, oxytocin gates information flow into reward circuits in a temporally selective and pathway-specific manner.

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Authors
Xiao, L., Priest, M. F., & Kozorovitskiy, Y.
Affiliations
Northwestern University (US)
Corresponding author
Kozorovitskiy, Yevgenia
Venue
eLife
Published
2018-04-20
Volume
7
ISSN
2050-084X (ISSN-L)
OpenAlex
W2799430681
Cited by
83
References
86
Citations by year
2026: 6 · 2025: 9 · 2024: 8 · 2023: 13 · 2022: 16 · 2021: 13 · 2020: 10 · 2019: 5 · 2018: 3
FWCI
3.53
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Arnold and Mabel Beckman Foundation (Arnold O. Beckman Postdoctoral Fellowship, BYI Award)
  • William and Bernice E Bumpus Foundation (Young Innovator Award)
  • Rita Allen Foundation (Scholar Award)
  • Alfred P. Sloan Foundation (Research Fellowship)
  • Kinship Foundation (Searle Scholar Award)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Social Sciences › Psychology › Social Psychology › Neuroendocrine regulation and behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
oxytocin, ventral tegmental area, dopaminergic neurons, excitatory synaptic transmission, endocannabinoid signaling, CB1 receptor, presynaptic modulation, synaptic depression, glutamatergic projections, reward systems, aversive stimuli, neuromodulation
MeSH terms
Animals, Mice, Inbred C57BL, Synaptic Transmission, Oxytocics, Oxytocin, Synapses, Ventral Tegmental Area, Disease Transmission, Infectious, Dopaminergic Neurons, Optogenetics

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