Cited by 45Parkinson's Disease Mechanisms and TreatmentsNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Midbrain gene screening identifies a new mesoaccumbal glutamatergic pathway and a marker for dopamine cells neuroprotected in Parkinson's disease

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Viereckel, Thomas, Dumas, Sylvie, Smith-Anttila, Casey J. A., Vlcek, Bianca, Bimpisidis, Zisis, Lagerström, Malin C., Konradsson-Geuken, Åsa, Wallén-Mackenzie, Åsa·2016·Scientific Reports

Abstract

The ventral tegmental area (VTA) and substantia nigra pars compacta (SNc) of the midbrain are associated with Parkinson's disease (PD), schizophrenia, mood disorders and addiction. Based on the recently unraveled heterogeneity within the VTA and SNc, where glutamate, GABA and co-releasing neurons have been found to co-exist with the classical dopamine neurons, there is a compelling need for identification of gene expression patterns that represent this heterogeneity and that are of value for development of human therapies. Here, several unique gene expression patterns were identified in the mouse midbrain of which NeuroD6 and Grp were expressed within different dopaminergic subpopulations of the VTA, and TrpV1 within a small heterogeneous population. Optogenetics-coupled in vivo amperometry revealed a previously unknown glutamatergic mesoaccumbal pathway characterized by TrpV1-Cre-expression. Human GRP was strongly detected in non-melanized dopaminergic neurons within the SNc of both control and PD brains, suggesting GRP as a marker for neuroprotected neurons in PD. This study thus unravels markers for distinct subpopulations of neurons within the mouse and human midbrain, defines unique anatomical subregions within the VTA and exposes an entirely new glutamatergic pathway. Finally, both TRPV1 and GRP are implied in midbrain physiology of importance to neurological and neuropsychiatric disorders.

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  1. Paxinos G. & Franklin K. B. J. The Mouse Brain in Stereotaxic Coordinates (Academic Press, 2012).

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Authors
Viereckel, T., Dumas, S., Smith-Anttila, C. J. A., Vlcek, B., Bimpisidis, Z., Lagerström, M. C., Konradsson-Geuken, Å., & Wallén-Mackenzie, Å.
Affiliations
Uppsala University (SE)
Venue
Scientific Reports
Published
2016-10-20
Volume
6
Issue
1
Pages
35203-35203
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2533973296
Cited by
45
References
72
Citations by year
2025: 1 · 2024: 4 · 2023: 6 · 2022: 3 · 2021: 6 · 2020: 4 · 2019: 10 · 2018: 9 · 2017: 2
FWCI
5.26
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Uppsala University Publications (Uppsala University) (submittedVersion, other-oa)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
Funders
  • Hjärnfonden
  • Karolinska Institutet
  • Vetenskapsrådet (2013-04657, 2014-03804)
  • Universidad Autónoma de San Luis Potosí
  • Bertil Hållstens Forskningsstiftelse
  • Uppsala Universitet
  • Parkinsonfonden
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
Parkinson's disease, midbrain, ventral tegmental area, substantia nigra pars compacta, dopaminergic neurons, NeuroD6, GRP, TRPV1, gene expression patterns, neuronal heterogeneity, neuroprotection, optogenetics, amperometry
MeSH terms
Animals, Dopamine, gamma-Aminobutyric Acid, Gene Expression Regulation, Humans, Mice, Transgenic, Nerve Tissue Proteins, Synaptic Transmission, Parkinson Disease, Ventral Tegmental Area, Glutamic Acid, Gastrin-Releasing Peptide, TRPV Cation Channels, Mice, Basic Helix-Loop-Helix Proteins, Dopaminergic Neurons, GABAergic Neurons, Optogenetics, Pars Compacta

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