Cited by 133Nicotinic Acetylcholine Receptors StudySmoking Behavior and CessationNeuroscience and Neuropharmacology Research

The α4β2α5 nicotinic cholinergic receptor in rat brain is resistant to up‐regulation by nicotine in vivo

Mao, Danyan, Perry, David C., Yasuda, Robert P., Wolfe, Barry B., Kellar, Kenneth J.·2008·Journal of Neurochemistry

Abstract

We used immunoprecipitation with subunit-specific antibodies to examine the distribution of heteromeric neuronal nicotinic acetylcholine receptors (nAChRs) that contain the alpha5 subunit in the adult rat brain. Among the regions of brain we surveyed, the alpha5 subunit is associated in approximately 37% of the nAChRs in the hippocampus, approximately 24% of the nAChRs in striatum, and 11-16% of the receptors in the cerebral cortex, thalamus, and superior colliculus. Sequential immunoprecipitation assays demonstrate that the alpha5 subunit is associated with alpha4beta2* nAChRs exclusively. Importantly, in contrast to alpha4beta2 nAChRs, which are increased by 37-85% after chronic administration of nicotine, the alpha4beta2alpha5 receptors are not increased by nicotine treatment. These data thus indicate that the alpha4beta2alpha5 nAChRs in rat brain are resistant to up-regulation by nicotine in vivo, which suggests an important regulatory role for the alpha5 subunit. To the extent that nicotine-induced up-regulation of alpha4beta2 nAChRs is involved in nicotine addiction, the resistance of the alpha4beta2alpha5 subtype to up-regulation may have important implications for nicotine addiction.

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Crossref · 10.1111/j.1471-4159.2007.05011.x

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Authors
Mao, D., Perry, D. C., Yasuda, R. P., Wolfe, B. B., & Kellar, K. J.
Affiliations
  • Georgetown University (US)
  • George Washington University (US)
Corresponding author
Kellar, Kenneth J.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2007-09-26
Volume
104
Issue
2
Pages
446-456
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1976309270
Cited by
133
References
57
Citations by year
2026: 3 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 4 · 2020: 4 · 2019: 4 · 2018: 7 · 2017: 4 · 2016: 11 · 2015: 11 · 2014: 11 · 2013: 12 · 2012: 14
FWCI
4.33
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute on Drug Abuse (R01DA015767, DA015767, DA 12976)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
nicotinic acetylcholine receptors, alpha5 subunit, receptor up-regulation, nicotine, receptor subunit composition, hippocampus, striatum, cerebral cortex, thalamus, superior colliculus, nicotine dependence, rat brain
MeSH terms
Animals, Binding Sites, Brain, Nicotine, Pyridines, Receptors, Nicotinic, Up-Regulation, Rats, Sprague-Dawley, Nicotinic Agonists, Bridged Bicyclo Compounds, Heterocyclic, Protein Subunits, Immunoprecipitation, Rats

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