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Acetylcholine receptors containing the β2 subunit are involved in the reinforcing properties of nicotine

NaturePublished 1 January 1998
Marina R. Picciotto, Michèle Zoli, Roberto Rimondini, Clément Léna, Lisa M. Marubio, Emilio Merlo Pich
Citations1,327
SJR quartileQ1
SJR score18.29
SNIP10.16

TL;DR

The results strongly support the idea that the β2-containing neuronal nicotinic acetylcholine receptor is involved in mediating the reinforcing properties of nicotine.

Abstract

Release of the neurotransmitter dopamine in the mesolimbic system of the brain mediates the reinforcing properties of several drugs of abuse, including nicotine. Here we investigate the contribution of the high-affinity neuronal nicotinic acetylcholine receptor to the effects of nicotine on the mesolimbic dopamine system in mice lacking the beta2 subunit of this receptor. We found that nicotine stimulates dopamine release in the ventral striatum of wild-type mice but not in the ventral striatum of beta2-mutant mice. Using patch-clamp recording, we show that mesencephalic dopaminergic neurons from mice without the beta2 subunit no longer respond to nicotine, and that self-administration of nicotine is attenuated in these mutant mice. Our results strongly support the idea that the beta2-containing neuronal nicotinic acetylcholine receptor is involved in mediating the reinforcing properties of nicotine.

Keywords

NeuroscienceBiochemistry, Genetics and Molecular Biology