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Moehle MS, Pancani T, Byun N, Yohn SE, Wilson GH, Dickerson JW, Remke DH, Xiang Z, Niswender CM, Wess J, Jones CK, Lindsley CW, Rook JM, Conn PJ. Cholinergic Projections to the Substantia Nigra Pars Reticulata Inhibit Dopamine Modulation of Basal Ganglia through the M 4 Muscarinic Receptor. Neuron 2017; 96:1358-1372.e4. [PMID: 29268098 PMCID: PMC5753765 DOI: 10.1016/j.neuron.2017.12.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 10/04/2017] [Accepted: 12/04/2017] [Indexed: 12/16/2022]
Abstract
Cholinergic regulation of dopaminergic inputs into the striatum is critical for normal basal ganglia (BG) function. This regulation of BG function is thought to be primarily mediated by acetylcholine released from cholinergic interneurons (ChIs) acting locally in the striatum. We now report a combination of pharmacological, electrophysiological, optogenetic, chemogenetic, and functional magnetic resonance imaging studies suggesting extra-striatal cholinergic projections from the pedunculopontine nucleus to the substantia nigra pars reticulata (SNr) act on muscarinic acetylcholine receptor subtype 4 (M4) to oppose cAMP-dependent dopamine receptor subtype 1 (D1) signaling in presynaptic terminals of direct pathway striatal spiny projections neurons. This induces a tonic inhibition of transmission at direct pathway synapses and D1-mediated activation of motor activity. These studies provide important new insights into the unique role of M4 in regulating BG function and challenge the prevailing hypothesis of the centrality of striatal ChIs in opposing dopamine regulation of BG output.
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Affiliation(s)
- Mark S Moehle
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Tristano Pancani
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Nellie Byun
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA; Vanderbilt University Institute of Imaging Science, Vanderbilt University, Nashville, TN, USA
| | - Samantha E Yohn
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - George H Wilson
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA; Vanderbilt University Institute of Imaging Science, Vanderbilt University, Nashville, TN, USA
| | - Johnathan W Dickerson
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Daniel H Remke
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Zixiu Xiang
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Colleen M Niswender
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA; Vanderbilt Kennedy Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Jürgen Wess
- Molecular Signaling Section, Laboratory of Bioorganic Chemistry, NIDDK, NIH, Bethesda, MD, USA
| | - Carrie K Jones
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Craig W Lindsley
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Jerri M Rook
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - P Jeffrey Conn
- Vanderbilt Center for Neuroscience Drug Discovery and Department of Pharmacology, Vanderbilt University, Nashville, TN, USA; Vanderbilt Kennedy Center, Vanderbilt University School of Medicine, Nashville, TN, USA.
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