Cited by 31Nicotinic Acetylcholine Receptors StudyReceptor Mechanisms and SignalingNeuroscience and Neuropharmacology Research

Role of the Agonist Binding Site in Up-Regulation of Neuronal Nicotinic α4β2 Receptors

Kishi, Masashi, Steinbach, Joe Henry·2006·Molecular Pharmacology

Abstract

Long-term exposure to nicotinic ligands results in up-regulation of neuronal nicotinic alpha4beta2 receptors in the brain and in heterologous expression systems. Up-regulation can be produced by a variety of drugs, including nicotinic agonists and competitive antagonists, but previous studies have indicated that the signal for up-regulation does not reflect a traditional nicotinic pharmacology, and the initial steps in signal transduction are not clear. We examined the signal for up-regulation and the possible involvement of the nicotine binding site in signal reception using mutated subunits transiently expressed in human embryonic kidney 293 cells. The data indicate that receptor activation and desensitization are not part of the signaling pathway. However, mutations to residues in the binding site can affect up-regulation. These results provide evidence that the binding site is directly involved in receiving the signal for up-regulation.

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Crossref · 10.1124/mol.106.029298

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37 of 37 references verified0 citation errors · 0 not checkable

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Authors
Kishi, M., & Steinbach, J. H.
Affiliations
Washington University in St. Louis (US)
Venue
Molecular Pharmacology
Publisher
Elsevier BV
Published
2006-12
Volume
70
Issue
6
Pages
2037-2044
ISSN
0026-895X (ISSN-L)
OpenAlex
W2104871159
Cited by
31
References
40
Citations by year
2024: 1 · 2018: 2 · 2017: 1 · 2016: 1 · 2015: 3 · 2013: 3 · 2012: 4
FWCI
1.50
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01NS022356, NS 22356)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
nicotinic acetylcholine receptors, receptor up-regulation, agonist binding site, receptor desensitization, receptor activation, signal transduction, binding site mutations
MeSH terms
Binding Sites, Cell Line, Enzyme-Linked Immunosorbent Assay, Humans, Mutation, Receptors, Nicotinic, Up-Regulation, Nicotinic Agonists

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