Distribution of mRNA for GPR143, a receptor of 3,4-L-dihydroxyphenylalanine, and of immunoreactivities for nicotinic acetylcholine receptors in the nigrostriatal and mesolimbic regions

Yuka Kasahara, Daiki Masukawa, Yoshie Nakamura, Koshi Murata, Tatsuo Hashimoto, Kohtaro Takizawa, Motokazu Koga, Fumio Nakamura, Yugo Fukazawa, Kengo Funakoshi, Yoshio Goshima

Research output: Contribution to journalArticlepeer-review

Abstract

Nicotine exerts its reinforcing actions by activating nicotinic acetylcholine receptors (nAChRs), but the detailed mechanisms remain unclear. Nicotine releases 3, 4-dihydroxyphenylalanine (DOPA), a neurotransmitter candidate in the central nervous system. Here, we investigated the distribution of GPR143, a receptor of DOPA, and nAChR subunits in the nigrostriatal and mesolimbic regions. We found GPR143 mRNA-positive cells in the striatum and nucleus accumbens. Some of them were surrounded by tyrosine hydroxylase (TH)-immunoreactive fibers. There were some GPR143 mRNA-positive cells coexpressing TH, and nAChR subunit α4 or α7 in the substantia nigra and ventral tegmental area. These findings suggest that DOPA-GPR143 signaling may be involved in the nicotine action in the nigrostriatal and mesolimbic dopaminergic systems.

Original languageEnglish
Pages (from-to)370-375
Number of pages6
JournalNeuroscience Research
Volume170
DOIs
Publication statusPublished - Sep 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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