Cited by 205Neurological disorders and treatmentsNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

Genetically distinct parallel pathways in the entopeduncular nucleus for limbic and sensorimotor output of the basal ganglia

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Wallace, Michael L., Saunders, Arpiar, Huang, Kee Wui, Philson, Adrienne C., Goldman, Melissa, Macosko, Evan Z., McCarroll, Steven A., Sabatini, Bernardo L.·2017·Neuron

Abstract

The basal ganglia (BG) integrate inputs from diverse sensorimotor, limbic, and associative regions to guide action-selection and goal-directed behaviors. The entopeduncular nucleus (EP) is a major BG output nucleus and has been suggested to channel signals from distinct BG nuclei to target regions involved in diverse functions. Here we use single-cell transcriptional and molecular analyses to demonstrate that the EP contains at least three classes of projection neurons-glutamate/GABA co-releasing somatostatin neurons, glutamatergic parvalbumin neurons, and GABAergic parvalbumin neurons. These classes comprise functionally and anatomically distinct output pathways that differentially affect EP target regions, such as the lateral habenula (LHb) and thalamus. Furthermore, LHb- and thalamic-projecting EP neurons are differentially innervated by subclasses of striatal and pallidal neurons. Therefore, we identify previously unknown subdivisions within the EP and reveal the existence of cascading, molecularly distinct projections through striatum and globus pallidus to EP targets within epithalamus and thalamus.

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Crossref · 10.1016/j.neuron.2017.03.017

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  • LHb-projecting EP/GPi neurons were later found to transmit both glutamate and GABA and to be capable of exciting and inhibiting LHb neurons.

    “Later, they were found to simultaneously transmit both glutamate and GABA and to be capable of both exciting and inhibiting LHb neurons 40,26 (Figure 1A).”
  • GABA/glutamate coreleasing neurons in mouse EP and human GPi are marked by Sst expression, enabling specific targeting.

    “GABA/glutamate coreleasing neurons in the EP of mice and GPi in humans were found to be marked by expression of Sst, facilitating specific targeting of these neurons in functional studies.40”
  • Most analyses in these single-cell sequencing studies are performed on populations of neurons.

    “An important caveat to these findings is that most analyses performed in these studies are performed on populations of neurons.”
  • Single-cell sequencing studies in the brain have shown that neuron types with the genetic constituents required for releasing more than one neurotransmitter are ubiquitous.

    “These studies have also shown the ubiquity of neuron types that have the genetic constituents required for the release of more than one neurotransmitter.6,7,9,40,131”

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Authors
Wallace, M. L., Saunders, A., Huang, K. W., Philson, A. C., Goldman, M., Macosko, E. Z., McCarroll, S. A., & Sabatini, B. L.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Broad Institute (US)
Corresponding author
Sabatini, Bernardo L.
Venue
Neuron
Publisher
Elsevier BV
Published
2017-04
Volume
94
Issue
1
Pages
138-152.e5
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2604170318
Cited by
205
References
66
Citations by year
2026: 18 · 2025: 20 · 2024: 32 · 2023: 20 · 2022: 19 · 2021: 17 · 2020: 28 · 2019: 24 · 2018: 16 · 2017: 11
FWCI
15.23
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute of Neurological Disease and Stroke (NS007484-15, NS046579-13)
  • Stanley Center for Psychiatric Research at the Broad Institute
  • Helen Hay Whitney Foundation
Topics
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
entopeduncular nucleus, basal ganglia, lateral habenula, thalamus, somatostatin neurons, parvalbumin neurons, globus pallidus, striatum, epithalamus, action selection, single-cell transcriptomics
MeSH terms
Animals, Basal Ganglia, Globus Pallidus, Humans, Limbic System, Neurons, Parvalbumins, Somatostatin, Thalamus, Neostriatum, In Situ Hybridization, Fluorescence, Glutamic Acid, Habenula, Entopeduncular Nucleus, Gene Expression Profiling, Mice, Single-Cell Analysis, GABAergic Neurons, Sensorimotor Cortex

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