Cited by 405Neuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on BehaviorCellular transport and secretion

Vesicular glutamate transport promotes dopamine storage and glutamate corelease in vivo

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Hnasko, Thomas S., Chuhma, Nao, Zhang, Hui, Goh, Germaine Y., Sulzer, David, Palmiter, Richard D., Rayport, Stephen, Edwards, Robert H.·2010·Neuron

Abstract

Dopamine neurons in the ventral tegmental area (VTA) play an important role in the motivational systems underlying drug addiction, and recent work has suggested that they also release the excitatory neurotransmitter glutamate. To assess a physiological role for glutamate corelease, we disrupted the expression of vesicular glutamate transporter 2 selectively in dopamine neurons. The conditional knockout abolishes glutamate release from midbrain dopamine neurons in culture and severely reduces their excitatory synaptic output in mesoaccumbens slices. Baseline motor behavior is not affected, but stimulation of locomotor activity by cocaine is impaired, apparently through a selective reduction of dopamine stores in the projection of VTA neurons to ventral striatum. Glutamate co-entry promotes monoamine storage by increasing the pH gradient that drives vesicular monoamine transport. Remarkably, low concentrations of glutamate acidify synaptic vesicles more slowly but to a greater extent than equimolar Cl(-), indicating a distinct, presynaptic mechanism to regulate quantal size.

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Crossref · 10.1016/j.neuron.2010.02.012

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Authors
Hnasko, T. S., Chuhma, N., Zhang, H., Goh, G. Y., Sulzer, D., Palmiter, R. D., Rayport, S., & Edwards, R. H.
Affiliations
  • University of California, San Francisco (US)
  • New York State Psychiatric Institute (US)
  • Columbia University Irving Medical Center (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Edwards, Robert H.
Venue
Neuron
Publisher
Elsevier BV
Published
2010-03
Volume
65
Issue
5
Pages
643-656
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2037500812
Cited by
405
References
80
Citations by year
2026: 12 · 2025: 19 · 2024: 26 · 2023: 21 · 2022: 21 · 2021: 28 · 2020: 20 · 2019: 19 · 2018: 28 · 2017: 30 · 2016: 30 · 2015: 37 · 2014: 35 · 2013: 20 · 2012: 15
FWCI
10.22
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Development Administration
  • National Institute of Mental Health
  • A.P. Giannini Foundation
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
vesicular glutamate transporter 2, dopamine storage, ventral tegmental area, dopaminergic neurons, conditional knockout, quantal size, monoamine storage, ventral striatum
MeSH terms
Adenosine Triphosphate, Analysis of Variance, Animals, Animals, Newborn, Catecholamines, Cell Line, Transformed, Chlorides, Choline, Cocaine, Corpus Striatum, Dopamine, Humans, Hydrogen-Ion Concentration, Luminescent Proteins, Membrane Potentials, Mice, Transgenic, Motor Activity, Neurons, Serotonin, Synaptic Vesicles, Transfection, Tyrosine 3-Monooxygenase, Presynaptic Terminals, Glutamic Acid, Dopamine Uptake Inhibitors, Green Fluorescent Proteins, Vesicular Glutamate Transport Protein 2, Mice, Rats, In Vitro Techniques

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