Cited by 99Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchParkinson's Disease Mechanisms and Treatments

Protein Kinase Cβ Is a Critical Regulator of Dopamine Transporter Trafficking and Regulates the Behavioral Response to Amphetamine in Mice

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Chen, Rong, Furman, Cheryse A., Zhang, Minjia, Kim, Myung N., Gereau, Robert W., Leitges, Michael, Gnegy, Margaret E.·2009·The Journal of Pharmacology and Experimental Therapeutics

Abstract

The dopamine transporter (DAT) is a key mediator of dopaminergic neurotransmission and a major target for amphetamine. We found previously that protein kinase C (PKC) beta regulates amphetamine-mediated dopamine efflux. Here, using PKCbeta wild-type (WT) and knockout (KO) mice, we report a novel role for PKCbeta in amphetamine-induced regulation of DAT trafficking and activity. PKCbeta KO mice have less striatal surface DAT, [3H]dopamine uptake, and amphetamine-stimulated dopamine efflux, yet higher novelty-induced locomotor activity than WT mice. Although a short exposure (< or =90 s) to amphetamine rapidly increases striatal surface DAT and [3H]dopamine uptake in WT mice, this treatment decreases surface DAT and [3H]dopamine uptake in KO mice. Increases in surface DAT and [3H]dopamine uptake are not evident in KO mice until a longer exposure (60 min) to amphetamine, by which time WT mice exhibit decreased surface DAT and dopamine uptake. The slowness of amphetamine-induced striatal DAT trafficking in PKCbeta KO mice was mimicked by the use of a specific PKCbeta inhibitor, LY379196, in WT mice. Furthermore, PKCbeta KO mice exhibit reduced locomotor responsiveness to amphetamine compared with WT, which could be explained by reduced surface DAT and delayed amphetamine-induced DAT trafficking in KO mice. Our results indicate that PKCbeta is crucial for proper trafficking of DAT to the surface and for functioning of DAT and amphetamine signaling, providing new insight into the role of PKCbeta as an important regulator of dopaminergic homeostasis.

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Authors
Chen, R., Furman, C. A., Zhang, M., Kim, M. N., Gereau, R. W., Leitges, M., & Gnegy, M. E.
Affiliations
  • University of Michigan (US)
  • Washington University in St. Louis (US)
Corresponding author
Gnegy, Margaret E.
Venue
The Journal of Pharmacology and Experimental Therapeutics
Publisher
Elsevier BV
Published
2009-03
Volume
328
Issue
3
Pages
912-920
ISSN
0022-3565 (ISSN-L)
OpenAlex
W2152729669
Cited by
99
References
42
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 4 · 2022: 1 · 2021: 10 · 2020: 2 · 2019: 7 · 2018: 5 · 2017: 7 · 2016: 6 · 2015: 6 · 2014: 5 · 2013: 7 · 2012: 7
FWCI
3.89
Type
journal article
Language
en
Open access
Locations
  • Journal of Pharmacology and Experimental Therapeutics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (NS48602)
  • National Institute on Drug Abuse (R01DA011697, DA11697)
  • National Institute of Neurological Disorders and Stroke (NS48602)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
protein kinase C beta, dopamine transporter, transporter trafficking, amphetamine, dopamine efflux, striatum, dopamine uptake, locomotor activity, novelty-induced locomotion
MeSH terms
Cyclic AMP, Amphetamine, Animals, Behavior, Animal, Benzothiepins, Calcium, Cell Line, Humans, Kidney, Protein Kinase C, Stress, Psychological, Sulfonamides, Rats, Sprague-Dawley, Receptors, Neuropeptide Y, Dopamine Plasma Membrane Transport Proteins, Mice, Rats, Protein Kinase C beta

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