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Decoding the neural representation of olfactory imprinting

Research Project

Project/Area Number 20K07262
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48020:Physiology-related
Research InstitutionKochi University

Principal Investigator

Kaba Hideto  高知大学, 医学部, 名誉教授 (50136371)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords環境生理学 / 神経科学 / 個体認識 / 匂い / 鋤鼻系
Outline of Research at the Start

妊娠雌マウスが交配雄とは異なる系統の雄の匂いに曝露されると妊娠の進行が止まり、流産してしまう(ブルース効果)。一方、雌マウスは交尾を契機に交配雄フェロモンの刷り込み学習(主座:副嗅球)を成立させ、妊娠を保障している。我々は最近、個体認識の手がかりとなる匂い分子としてミトコンドリアペプチドを同定した。本研究では、1)副嗅球の単一細胞の学習後の変化を捉える、2)ブルース効果の母性遺伝について行動学的解析を行う、3)ミトコンドリアペプチドに対する副嗅球僧帽細胞の神経アンサンブル活動応答を解析することにより、ブルース効果および学習後に妊娠の保障に帰結する出力信号の解読を行う。

Outline of Final Research Achievements

In this study I demonstrate (1) the pregnancy-blocking chemosignals in NZB male urine are maternally inherited, based on the observations that sons of reciprocal crosses between BALB/c and NZB mice blocked pregnancy only when their mother, but not their father, is of the NZB strain, and in contrast, sons of reciprocal crosses between BALB/c and CBA mice did not block pregnancy even if their mother is of either the BALB/c or CBA strain, pointing to the involvement of factors other than the ND1 and ND2 peptides that are identical between the CBA and BALB/c strains and (2) vasopressin suppressed IPSC recorded in a mitral cell via V1a vasopressin receptors, thereby disinhibiting the mitral cell.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、嗅覚を介した動物間コミュニケーションの実態解明に大きく寄与すると共に、ミトコンドリアゲノム由来ペプチドが“自己か非自己か”を認識する際の原因となり得ることから、嗅覚系と免疫系との新たなクロストークの場を提供し、MHCによる体臭の違いがヒトの配偶者選択に影響を及ぼすように、ヒトにおける嗅覚コミュニケーションの新たな発見にも繋がり得る。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2023 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (2 results)

  • [Int'l Joint Research] Duke University Medical Center(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Maternally inherited peptides as strain-specific chemosignals.2020

    • Author(s)
      Kaba H, Fujita H, Agatsuma T, Matsunami H
    • Journal Title

      Proceedings of the National Academy of Sciences of the United States of America

      Volume: 117 Issue: 48 Pages: 30738-30743

    • DOI

      10.1073/pnas.2014712117

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] マウス副嗅球顆粒細胞の応答性に対するバソプレシンV1a受容体の作用2023

    • Author(s)
      谷口睦男、村田芳博、山口正洋、椛秀人
    • Organizer
      第100回日本生理学会記念大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 電位依存性Ca電流の抑制を介したバソプレシンによるマウス副嗅球顆粒細胞-僧帽細胞間GABA作動性シナプス伝達抑制2021

    • Author(s)
      谷口睦男、村田芳博、山口正洋、椛秀人
    • Organizer
      第98回日本生理学会大会(Web大会)
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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