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The role of reward system and circadian clock in maternal memory

Research Project

Project/Area Number 17K01986
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic / Social brain science
Research InstitutionOsaka University

Principal Investigator

Tominaga Keiko  大阪大学, 生命機能研究科, 准教授 (60256196)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsシナプス可塑性 / マウス / 母性記憶 / 母性行動 / 概日リズム / 時計遺伝子 / 報酬系 / 概日時計 / ストレス
Outline of Final Research Achievements

We found that synaptogenesis occurred in the reward system of a dam which experienced maternal behavior. The synaptogenesis was retained even though the dam was separated from pups after contacting with them for several days. A protein synthesis inhibitor administered intracerebrally during the contact period inhibited the synaptogenesis in the reward system and maternal memory formation. We also found that the Ca2+-permeable AMPA receptor, which is important for induction of the synaptic plasticity in the cultured hippocampal slices, was also involved in maternal memory formation. It is suggested that maternal memory is established by the mechanism similar to synaptic plasticity produced in other brain regions such as the hippocampus. Our finding indicates the possibility that immature maternal behavior can be corrected by repeating appropriate maternal behavior. Elucidation of the cellular mechanism of maternal memory is expected to pave the way for specific correction methods.

Academic Significance and Societal Importance of the Research Achievements

母性記憶という現象は、生得的(本能的)なものとして考えられてきた養育行動が経験により影響を受けることを示している。母性記憶の細胞基盤を明らかにした本研究成果により、適切な経験を繰り返すことで、未熟な母性行動を適切なものへと修正できる可能性を示すことができた。母性記憶形成の細胞メカニズムの解明は、具体的な修正方法への道筋をつけると期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2020 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Transient appearance of Ca(2+) -permeable AMPA receptors is crucial for the production of repetitive LTP-induced synaptic enhancement (RISE) in cultured hippocampal slices.2020

    • Author(s)
      Tominaga-Yoshino K, Urakubo T, Ueno Y, Kawaai K, Saito S, Tashiro T, Ogura A.
    • Journal Title

      Hippocampus.

      Volume: - Issue: 7 Pages: 763-769

    • DOI

      10.1002/hipo.23206

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An in vitro model system for studying the stress-induced memory disorder2017

    • Author(s)
      小倉明彦,齋藤慎一,木村聡志,冨永(吉野)恵子
    • Journal Title

      Folia Pharmacologica Japonica

      Volume: 150 Issue: 5 Pages: 223-227

    • DOI

      10.1254/fpj.150.223

    • NAID

      130006198412

    • ISSN
      0015-5691, 1347-8397
    • Related Report
      2017 Research-status Report
  • [Presentation] 時計遺伝子改変マウスを用いた母性行動の解析2020

    • Author(s)
      村上温美、河村小雪、松本かな子、武田万稀、岸川友佳、岡村均、冨永恵子
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Per-nullマウスにおける母性行動の日周リズム2019

    • Author(s)
      河村小雪、松本かな子、村上温美、岡村均、冨永恵子
    • Organizer
      第26回日本時間生物学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Does maternal rhythm affect the development of circadian rhythm of the offspring?2019

    • Author(s)
      Keiko Tominaga, Tomonori Nakamura, Mitinori Saitou and Hitoshi Okamura
    • Organizer
      The 20th International Conference on System Biology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Circadian oscillation of diurnal primate common marmosets (Callithrix jacchus). I. Physiological parameters2018

    • Author(s)
      Y.Kono, M.Sugawa, T.Fujinaga, T.Kaneko, A.Shimada, K.Tominaga, H.Onoe, K.Isa, T.Isa, SJ Schwartz, H.Okamura
    • Organizer
      第41回日本神経科学大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Circadian oscillation of diurnal primate common marmosets (Callithrix jacchus). II. Cohabitation on rhythmicity2018

    • Author(s)
      M.Sugawa, Y.Kono, T.Fujinaga, N.Sato, T.Kaneko, A.Shimada, K.Tominaga, JM. Fustin, H.Onoe, J.Yamashita, K.Isa, T.Isa, H.Okamura
    • Organizer
      第41回日本神経科学大会
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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