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Multiple Muscarinic Acetylcholine Receptor Subtypes Modulate Striatal Dopamine Release, as Studied with M1–M5Muscarinic Receptor Knock-Out Mice

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Zhang, Weilie, Yamada, Masahisa, Gomeza, Jesus, Basile, Anthony S., Wess, Jürgen·2002·The Journal of Neuroscience

Abstract

A proper balance between striatal muscarinic cholinergic and dopaminergic neurotransmission is required for coordinated locomotor control. Activation of striatal muscarinic acetylcholine receptors (mAChRs) is known to modulate striatal dopamine release. To identify the mAChR subtype(s) involved in this activity, we used genetically altered mice that lacked functional M1-M5 mAChRs [knock-out (KO) mice]. In superfused striatal slices from wild-type mice, the non-subtype-selective muscarinic agonist oxotremorine led to concentration-dependent increases in potassium-stimulated [3H]dopamine release (by up to 60%). The lack of M1 or M2 receptors had no significant effect on the magnitude of these responses. Strikingly, oxotremorine-mediated potentiation of stimulated striatal [3H]dopamine release was abolished in M4 receptor KO mice, significantly increased in M3 receptor-deficient mice, and significantly reduced (but not abolished) in M5 receptor KO mice. Additional release studies performed in the presence of tetrodotoxin suggested that the dopamine release-stimulating M4 receptors are probably located on neuronal cell bodies, but that the release-facilitating M5 and the release-inhibiting M3 receptors are likely to be located on nerve terminals. Studies with the GABA(A) receptor blocker bicuculline methochloride suggested that M3 and M4 receptors mediate their dopamine release-modulatory effects via facilitation or inhibition, respectively, of striatal GABA release. These results provide unambiguous evidence that multiple mAChR subtypes are involved in the regulation of striatal dopamine release. These findings should contribute to a better understanding of the important functional roles that the muscarinic cholinergic system plays in striatal function.

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Crossref · 10.1523/jneurosci.22-15-06347.2002

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  • M1/M5 receptors can stimulate dopamine release from striatal synaptosomes and postsynaptic M1/M5 receptors can increase excitability of cortical pyramidal neurons.

    “In contrast, M1/M5 receptors can stimulate dopamine (DA) release from striatal synaptosomes (Zhang et al., 2002) and postsynaptic M1/M5 receptors can increase excitability of cortical pyramidal neurons (Douglas et al., 2002; McCormick and Prince, 1985).”

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Authors
Zhang, W., Yamada, M., Gomeza, J., Basile, A. S., & Wess, J.
Affiliations
National Institutes of Health (US)
Venue
The Journal of Neuroscience
Published
2002-08-01
Volume
22
Issue
15
Pages
6347-6352
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1494737704
Cited by
224
References
42
Citations by year
2026: 4 · 2025: 6 · 2024: 8 · 2023: 7 · 2022: 6 · 2021: 6 · 2020: 9 · 2019: 14 · 2018: 12 · 2017: 8 · 2016: 10 · 2015: 7 · 2014: 7 · 2013: 6 · 2012: 7
FWCI
3.48
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Eli Lilly and Company
  • National Institute of Diabetes and Digestive and Kidney Diseases
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
muscarinic receptors, striatal dopamine release, M3 muscarinic receptor, M4 receptor, M5 receptor, M1 receptor, M2 muscarinic receptor, oxotremorine, GABA release, cholinergic-dopaminergic interaction, striatum, locomotion control
MeSH terms
Animals, Corpus Striatum, Dopamine, Dose-Response Relationship, Drug, Neurons, Oxotremorine, Potassium, Receptors, Muscarinic, Tetrodotoxin, Mice, Knockout, Muscarinic Agonists, GABA Antagonists, Receptor, Muscarinic M2, Receptor, Muscarinic M3, Receptor, Muscarinic M4, Receptor, Muscarinic M5, Receptor, Muscarinic M1, Mice, GABA-A Receptor Antagonists, In Vitro Techniques

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