Alpha-3 beta-4 nicotinic receptor
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Alpha-3 beta-4 nicotinic receptor
The alpha-3 beta-4 nicotinic receptor, also known as the α3β4 receptor, is a type of nicotinic acetylcholine receptor, consisting of α3 and β4 subunits.[1][2] It is located in the brain,[2] where activation yields post- and presynaptic excitation.
As with other nicotinic acetylcholine receptors, the α3β4 receptor is pentameric [(α3)m(β4)n where m + n = 5]. The exact subunit stoichiometry is not known and it is possible that more than one functional α3β4 receptor assembles in vivo with varying subunit stoichiometries.
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Contents
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Ligands
Agonists
Antagonists
Competitive
- DHβE[3]
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- compound 5, highly selective over a4b2 and a7[4]
Noncompetitive
- Dextromethorphan[5][6]
- Dextrorphan[5][6]
- Dextropropoxyphene[7]
- Hexamethonium[3]
- Imipramine, K(d) = 0.41 μM[8]
- Levacetylmethadol[7]
- Mecamylamine[3]
- Methadone[7]
- Tubocurarine[3]
- Bupropion
See also
References
- ^ Stauderman KA, Mahaffy LS, Akong M, et al. (February 1998). "Characterization of human recombinant neuronal nicotinic acetylcholine receptor subunit combinations alpha2beta4, alpha3beta4 and alpha4beta4 stably expressed in HEK293 cells". The Journal of Pharmacology and Experimental Therapeutics 284 (2): 777–89. PMID 9454827. http://jpet.aspetjournals.org/cgi/pmidlookup?view=long&pmid=9454827.
- ^ a b Xiao Y, Kellar KJ (July 2004). "The comparative pharmacology and up-regulation of rat neuronal nicotinic receptor subtype binding sites stably expressed in transfected mammalian cells". The Journal of Pharmacology and Experimental Therapeutics 310 (1): 98–107. doi:10.1124/jpet.104.066787. PMID 15016836. http://jpet.aspetjournals.org/cgi/pmidlookup?view=long&pmid=15016836.
- ^ a b c d e f g h i Xiao Y, Meyer EL, Thompson JM, Surin A, Wroblewski J, Kellar KJ (August 1998). "Rat alpha3/beta4 subtype of neuronal nicotinic acetylcholine receptor stably expressed in a transfected cell line: pharmacology of ligand binding and function". Molecular Pharmacology 54 (2): 322–33. PMID 9687574. http://molpharm.aspetjournals.org/cgi/pmidlookup?view=long&pmid=9687574.
- ^ Zaveri NT (2011). "The nociceptin/orphanin FQ receptor (NOP) as a target for drug abuse medications". Curr Top Med Chem 11 (9): 1151–6. PMID 21050175.
- ^ a b Hernandez SC, Bertolino M, Xiao Y, Pringle KE, Caruso FS, Kellar KJ (2000). "Dextromethorphan and its metabolite dextrorphan block alpha3beta4 neuronal nicotinic receptors". J. Pharmacol. Exp. Ther. 293 (3): 962–7. PMID 10869398.
- ^ a b Damaj MI, Flood P, Ho KK, May EL, Martin BR (February 2005). "Effect of dextrometorphan and dextrorphan on nicotine and neuronal nicotinic receptors: in vitro and in vivo selectivity". The Journal of Pharmacology and Experimental Therapeutics 312 (2): 780–5. doi:10.1124/jpet.104.075093. PMID 15356218. http://jpet.aspetjournals.org/cgi/pmidlookup?view=long&pmid=15356218.
- ^ a b c "Blockade of Rat α3β4 Nicotinic Receptor Function by Methadone, Its Metabolites, and Structural Analogs — JPET". http://jpet.aspetjournals.org/content/299/1/366.abstract.
- ^ Arias HR, Targowska-Duda KM, Feuerbach D, Sullivan CJ, Maciejewski R, Jozwiak K (March 2010). "Different interaction between tricyclic antidepressants and mecamylamine with the human alpha3beta4 nicotinic acetylcholine receptor ion channel". Neurochem. Int. 56 (4): 642–9. doi:10.1016/j.neuint.2010.01.011. PMID 20117161.
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