Cited by 845Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchNicotinic Acetylcholine Receptors Study

Striatal Dopamine Release Is Triggered by Synchronized Activity in Cholinergic Interneurons

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Threlfell, Sarah, Lalic, Tatjana, Platt, Nicola J., Jennings, Katie A., Deisseroth, Karl, Cragg, Stephanie J.·2012·Neuron

Abstract

Striatal dopamine plays key roles in our normal and pathological goal-directed actions. To understand dopamine function, much attention has focused on how midbrain dopamine neurons modulate their firing patterns. However, we identify a presynaptic mechanism that triggers dopamine release directly, bypassing activity in dopamine neurons. We paired electrophysiological recordings of striatal channelrhodopsin2-expressing cholinergic interneurons with simultaneous detection of dopamine release at carbon-fiber microelectrodes in striatal slices. We reveal that activation of cholinergic interneurons by light flashes that cause only single action potentials in neurons from a small population triggers dopamine release via activation of nicotinic receptors on dopamine axons. This event overrides ascending activity from dopamine neurons and, furthermore, is reproduced by activating ChR2-expressing thalamostriatal inputs, which synchronize cholinergic interneurons in vivo. These findings indicate that synchronized activity in cholinergic interneurons directly generates striatal dopamine signals whose functions will extend beyond those encoded by dopamine neuron activity.

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Crossref · 10.1016/j.neuron.2012.04.038

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  • Inhomogeneous neuronal release of acetylcholine, glutamate and substance P affects dopamine release, which, together with the heterogeneous striosome-matrix compartments, would result in diverse dopamine release.

    “Further, inhomogeneous neuronal release of acetylcholine, glutamate and substance P affects dopamine release159–161, which, together with the heterogeneous striosome-matrix compartments, would result in diverse dopamine release.”

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Authors
Threlfell, S., Lalic, T., Platt, N. J., Jennings, K. A., Deisseroth, K., & Cragg, S. J.
Affiliations
  • University of Oxford (GB)
  • Howard Hughes Medical Institute (US)
Corresponding author
Cragg, Stephanie J.
Venue
Neuron
Publisher
Elsevier BV
Published
2012-07
Volume
75
Issue
1
Pages
58-64
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2075994330
Cited by
845
References
31
Citations by year
2026: 44 · 2025: 62 · 2024: 62 · 2023: 69 · 2022: 77 · 2021: 64 · 2020: 59 · 2019: 67 · 2018: 58 · 2017: 53 · 2016: 70 · 2015: 48 · 2014: 55 · 2013: 41 · 2012: 15
FWCI
20.96
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
Parkinson's UK (G-0808, J-0901)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
Keywords
striatal dopamine release, cholinergic interneurons, nicotinic acetylcholine receptors, presynaptic dopamine release, neuronal synchronization, channelrhodopsin-2, dopaminergic neurons, carbon fiber microelectrodes, striatum
MeSH terms
Action Potentials, Animals, Corpus Striatum, Dopamine, Electric Stimulation, Interneurons, Mice, Inbred C57BL, Mice, Transgenic, Organ Culture Techniques, Mice, Cholinergic Neurons

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