Two highly homologous mouse odorant receptors encoded by tandemly-linked MOR29A and MOR29B genes respond differently to phenyl ethers

Akio Tsuboi, Takeshi Imai, Hiroyuki K. Kato, Hideyuki Matsumoto, Kei M. Igarashi, Misao Suzuki, Kensaku Mori, Hitoshi Sakano

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

Since the discovery of odorant receptors (ORs) in rodents, most ORs have remained orphan receptors. Even for deorphanized ORs in vitro, their in vivo properties are largely unknown. Here, we report odor response profiles of two highly homologous mouse ORs, MOR29A and MOR29B, both in vivo and in vitro. The BAC transgenic mouse was generated, in which olfactory sensory neurons (OSNs) expressing the transgenes MOR29A and MOR29B were differently tagged with IRES-gapECFP and IRES-gapEYFP, respectively. MOR29A- and MOR29B-expressing OSN axons converged on separate but nearby loci on the dorsal surface of the olfactory bulb (OB). Optical imaging of intrinsic signals in the OB identified five different phenyl ethers as candidate ligands for MOR29B. Based on in vitro calcium imaging with the isolated OSNs and luciferase assay with heterologous cells, only guaiacol and vanillin were found to be potent agonists for MOR29A and MOR29B. Because of its accessible glomerular locations in the dorsal OB and defined odor response profiles both in vivo and in vitro, the MOR29A/29B tagging mouse will serve as an excellent tool for studying both odor-signal processing and neural circuitry in the OB.

本文言語英語
ページ(範囲)205-213
ページ数9
ジャーナルEuropean Journal of Neuroscience
33
2
DOI
出版ステータス出版済み - 1 2011
外部発表はい

All Science Journal Classification (ASJC) codes

  • 神経科学(全般)

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