PUBLICATION
Allosteric inhibition of muscle-type nicotinic acetylcholine receptors by a neuromuscular blocking agent pancuronium
- Authors
- Sakata, S., Ono, F.
- ID
- ZDB-PUB-231013-57
- Date
- 2023
- Source
- PLoS One 18: e0292262e0292262 (Journal)
- Registered Authors
- Ono, Fumihito
- Keywords
- none
- MeSH Terms
-
- Animals
- Muscles/metabolism
- Neuromuscular Blocking Agents*
- Pancuronium/metabolism
- Pancuronium/pharmacology
- Receptors, Nicotinic*/metabolism
- Zebrafish/metabolism
- PubMed
- 37824562 Full text @ PLoS One
Citation
Sakata, S., Ono, F. (2023) Allosteric inhibition of muscle-type nicotinic acetylcholine receptors by a neuromuscular blocking agent pancuronium. PLoS One. 18:e0292262e0292262.
Abstract
Muscle relaxants are indispensable for surgical anesthesia. Early studies suggested that a classical non-depolarizing muscle relaxant pancuronium competitively binds to the ligand binding site to block nicotinic acetylcholine receptors (nAChR). Our group recently showed that nAChR which has two distinct subunit combinations are expressed in zebrafish muscles, αβδε and αβδ, for which potencies of pancuronium are different. Taking advantage of the distinct potencies, we generated chimeras between two types of nAChRs and found that the extracellular ACh binding site is not associated with the pancuronium sensitivity. Furthermore, application of either 2 μM or 100 μM ACh in native αβδε or αβδ subunits yielded similar IC50 of pancuronium. These data suggest that pancuronium allosterically inhibits the activity of zebrafish nAChRs.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping