Cited by 639Neuroscience and Neuropharmacology ResearchAmino Acid Enzymes and MetabolismCellular transport and secretion

A third vesicular glutamate transporter expressed by cholinergic and serotoninergic neurons

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Gras, Christelle, Herzog, Etienne, Bellenchi, Gian Carlo, Bernard, Véronique, Ravassard, Philippe, Pohl, Michel, Gasnier, Bruno, Giros, Bruno +1 more·2002·The Journal of Neuroscience

Abstract

Two proteins previously known as Na(+)-dependent phosphate transporters have been identified recently as vesicular glutamate transporters (VGLUT1 and VGLUT2). Together, VGLUT1 and VGLUT2 are operating at most central glutamatergic synapses. In this study, we characterized a third vesicular glutamate transporter (VGLUT3), highly homologous to VGLUT1 and VGLUT2. Vesicles isolated from endocrine cells expressing recombinant VGLUT3 accumulated l-glutamate with bioenergetic and pharmacological characteristics similar, but not identical, to those displayed by the type-1 and type-2 isoforms. Interestingly, the distribution of VGLUT3 mRNA was restricted to a small number of neurons scattered in the striatum, hippocampus, cerebral cortex, and raphe nuclei, in contrast to VGLUT1 and VGLUT2 transcripts, which are massively expressed in cortical and deep structures of the brain, respectively. At the ultrastructural level, VGLUT3 immunoreactivity was concentrated over synaptic vesicle clusters present in nerve endings forming asymmetrical as well as symmetrical synapses. Finally, VGLUT3-positive neurons of the striatum and raphe nuclei were shown to coexpress acetylcholine and serotonin transporters, respectively. Our study reveals a novel class of glutamatergic nerve terminals and suggests that cholinergic striatal interneurons and serotoninergic neurons from the brainstem may store and release glutamate.

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Crossref · 10.1523/jneurosci.22-13-05442.2002

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  • About 60% of DR serotonin neurons co-express the vesicular glutamate transporter Vglut3 in the rat and co-release glutamate in the mouse.

    “~60% of DR serotonin neurons co-express the vesicular glutamate transporter Vglut3 in the rat (Gras et al., 2002) and co-release glutamate in the mouse (Liu et al., 2014; Sengupta et al., 2017).”

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Authors
Gras, C., Herzog, E., Bellenchi, G. C., Bernard, V., Ravassard, P., Pohl, M., Gasnier, B., Giros, B., & El Mestikawy, S.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Inserm (FR)
Venue
The Journal of Neuroscience
Published
2002-07-01
Volume
22
Issue
13
Pages
5442-5451
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1630907922
Cited by
639
References
47
Citations by year
2026: 4 · 2025: 9 · 2024: 15 · 2023: 15 · 2022: 15 · 2021: 18 · 2020: 24 · 2019: 28 · 2018: 17 · 2017: 25 · 2016: 28 · 2015: 23 · 2014: 21 · 2013: 29 · 2012: 20
FWCI
14.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Centre National de la Recherche Scientifique
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
VGLUT3, VGLUT1, VGLUT2, synaptic vesicles, cholinergic neurons, serotonergic neurons, striatum, raphe nuclei, vesicular acetylcholine transporter, serotonin transporter, glutamate release, mRNA distribution
MeSH terms
Acetylcholine, Amino Acid Sequence, Animals, Brain, Carrier Proteins, Cell Line, Cloning, Molecular, Kinetics, Molecular Sequence Data, Neurons, Raphe Nuclei, RNA, Messenger, Serotonin, Synaptic Vesicles, Tissue Distribution, Transcription, Genetic, Sequence Alignment, Glutamic Acid, Membrane Transport Proteins, Amino Acid Transport Systems, Acidic, Vesicular Transport Proteins, Vesicular Glutamate Transport Proteins, Vesicular Glutamate Transport Protein 1, Vesicular Glutamate Transport Protein 2, Rats

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