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Analyses of Kenyon cell type diversification in hymenopteran insect brains and its relationship with behavioral evolution

Research Project

Project/Area Number 20H03300
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 45020:Evolutionary biology-related
Research InstitutionThe University of Tokyo

Principal Investigator

Takeo Kubo  東京大学, 大学院理学系研究科(理学部), 教授 (10201469)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Keywordsミツバチ / ハバチ / ハチ目昆虫 / キノコ体 / ケニヨン細胞 / エクダイソン情報伝達系 / 進化動態 / ゲノム編集 / Mblk-1 / ecdysone receptor / ChIP-seq解析 / 単一細胞RNA-seq解析 / 行動進化 / 転写因子 / セイヨウミツバチ / カブラハバチ / mKast / EcR / 社会性昆虫 / 脳機能進化 / 連合学習 / Mblk-1/E93 / ハチ目 / 脳高次中枢
Outline of Research at the Start

研究代表者は、これまでミツバチの脳の「分子的解剖」を遂行した結果、① ミツバチの脳高次中枢(キノコ体)を構成する「中間型」ケニヨン細胞サブタイプを新たに発見した。② ハバチ→有錐類→有剣類というハチ目昆虫の行動進化に伴って、キノコ体のケニヨン細胞サブタイプが増加していることを見出し、ハチ目昆虫の行動進化が相関するとの仮説を提出した。③ ミツバチに初めてゲノム編集法を適用し、遺伝子欠失ミツバチを作出した。本研究は、これまでの研究代表者の独自の研究成果に基づき、ハチ目昆虫のケニヨン細胞サブタイプの機能と進化の解析する点で、世界的にも類例を見ない、全く独創的な研究課題である。

Outline of Final Research Achievements

We have previously reported that the number of Kenyon cell subtypes that constitute the mushroom bodies, a higher brain center of the honey bees, increased from 1 type in solitary/phytophagous sawflies that have ancestral traits, to 2 types in solitary/parasitic Apocrita species, and to 3 types in nidificating/social Aculeate species, in correlation with the behavioral evolution in hymenopteran insects, suggesting that the increase in the number of Kenyon cell subtypes may have served as a neural basis for behavioral evolution in hymenopteran insects. In this research project, we elucidated for the first time the evolutionary dynamics of the Kenyon cell subtypes that constitute the mushroom bodies of hymenopteran insects and proposed the possibility that transcription factors that function in the ecdysone signaling pathway are remobilized to have unique target genes as the molecular basis for the generation of new Kenyon cell subtypes.

Academic Significance and Societal Importance of the Research Achievements

ハチ目昆虫ではミツバチなどの営巣性/社会性の種類(有剣類)が良く知られているが、単独性(ハバチなど)や寄生性の種類(有錐類)も存在し、多様な行動様式を示す種類を含む分類群である。加えて、ハチ目昆虫は哺乳類に比べ小さく簡単な構造の脳をもつため、行動進化の基盤となった神経機構の進化を調べる上で有用である。ヒトを含む高等動物の脳では高次脳機能は大脳新皮質の各領野に分配されているが、こうした脳機能局在の生理的意義とその進化の分子神経基盤はほとんど不明である。本研究で得られた知見は、ハチ目のみならず動物一般の高次脳機能の進化の理解にも寄与し得る、学術的に重要な研究成果と考えられる。

Report

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

    (24 results)

All 2023 2022 2021 2020 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (17 results) (of which Int'l Joint Research: 4 results) Remarks (3 results)

  • [Journal Article] Evolutionary dynamics of mushroom body Kenyon cell types in hymenopteran brains from multi-functional type to functionally specialized types.2023

    • Author(s)
      Takayoshi Kuwabara, Hiroki Kohno, Masatsugu Hatakeyama, Takeo Kubo
    • Journal Title

      Science Advances

      Volume: Add4210 Issue: 18

    • DOI

      10.1126/sciadv.add4201

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mblk-1/E93, an ecdysone related-transcription factor, targets synaptic plasticity-related genes in the honey bee mushroom bodies2022

    • Author(s)
      Matsumura Yasuhiro、To Taiko Kim、Kunieda Takekazu、Kohno Hiroki、Kakutani Tetsuji、Kubo Takeo
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 21367-21367

    • DOI

      10.1038/s41598-022-23329-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] eural activity mapping of bumble bee (Bombus ignitus) brains during foraging flight using immediate early genes.2020

    • Author(s)
      2.Iino S, Shiota Y, Nishimura M, Asada M, Ono, M, Kubo T.
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 7887-7887

    • DOI

      10.1038/s41598-020-64701-1

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Developmental stage-specific distribution and phosphorylation of Mblk-1, a transcription factor involved in ecdysteroid-signaling in the honey bee brain2020

    • Author(s)
      Kumagai Hitomi、Kunieda Takekazu、Nakamura Korefumi、Matsumura Yasuhiro、Namiki Manami、Kohno Hiroki、Kubo Takeo
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 8735-8735

    • DOI

      10.1038/s41598-020-65327-z

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ミツバチのキノコ体ケニヨン細胞サブタイプの発生様式の解析2023

    • Author(s)
      鎌田周一、河野大輝、久保健雄
    • Organizer
      第67回日本応用動物昆虫学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミツバチのキノコ体ケニヨン細胞サブタイプの発生様式の解析2023

    • Author(s)
      鎌田周一、河野大輝、久保健雄
    • Organizer
      日本動物学会関東支部第75回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Identification of the pupal stages at which three Kenyon cell subtypes are generated in the mushroom bodies of the honey bee2022

    • Author(s)
      Hiroki Kohno, Takeo Kubo
    • Organizer
      日本発生生物学会第55回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Functional analyses of mKast by producing knocked out worker honey bees using CRISPR/Cas92022

    • Author(s)
      Hiroki Kohno, Takeo Kubo
    • Organizer
      IUSSI2022 19th Congress of the International Union for the Study of Social Insects
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis and exploration of Kenyon cells increased with behavioral evolution in hymenopteran insects2022

    • Author(s)
      Takayoshi Kuwabara, Hiroki Kohno, Masatsugu Hatakeyama, Takeo Kubo
    • Organizer
      IUSSI2022 19th Congress of the International Union for the Study of Social Insects
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ミツバチのダンスコミュニケーションに関わる神経細胞種の探索 ~ミツバチとマルハナバチの脳高次中枢の比較scRNA-seq解析~2022

    • Author(s)
      桑原嵩佳、河野大輝、久保健雄
    • Organizer
      シングルセルゲノミクス研究会2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] ハチ目昆虫のキノコ体におけるケニヨン細胞種の進化ダイナミクス解析2022

    • Author(s)
      桑原嵩佳、河野大輝、畠山正統、久保健雄
    • Organizer
      日本動物学会第93回早稲田大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 行動を司る脳進化の謎へ切り込む ~シンプルな脳を持つハチ目昆虫の種間比較解析より~2022

    • Author(s)
      桑原嵩佳、河野大輝、畠山正統、久保健雄
    • Organizer
      第7回ユニーク会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Functional analyses of mKast, which is preferentially expressed in middle-type Kenyon cells in mushroom bodies of the honey bee, by producing knocked-out workers2021

    • Author(s)
      Hiroki Kohno, Takeo Kubo
    • Organizer
      日本比較生理生化学会 第43回札幌オンライン大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A novel role of Mblk-1 in transcriptional regulation of genes related to neural functions including learning and memory in mushroom bodies of the honey bee brain2021

    • Author(s)
      Yasuhiro Matsumura, Taiko Kim To, Takekazu Kunieda, Tetsuji Kakutani, Takeo Kubo
    • Organizer
      第 44 回日本神経科学大会/CJK 第一回国際会議
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ミツバチ働きバチ脳で採餌行動により誘導されるエクダイソン受容体の標的遺伝子の探索2021

    • Author(s)
      飯野史織、 大矢恵代、 角谷徹仁、 久保健雄
    • Organizer
      日本動物学会92回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Comparative transcriptome analysis of mushroom bodies in a sawfly and honey bee suggests functional differentiation of Kenyon cells during the evolutionary history of hymenopteran insects2021

    • Author(s)
      Takayoshi Kuwabara, Hiroki Kohno, Masatsugu Hatakeyama, Takeo Kubo
    • Organizer
      The 2nd AsiaEvo Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ミツバチと原始的なハチ目昆虫ハバチの脳高次中枢の比較トランスクリプトーム解析2021

    • Author(s)
      桑原嵩佳、河野大輝、畠山正統、久保健雄
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Analysis of target genes of a transcription factor Mblk-1 that is preferentially expressed in the large-type Kenyon cells in the honey bee brain2020

    • Author(s)
      松村泰宏、藤泰子、熊谷瞳、國枝武和、角谷徹仁、久保健雄
    • Organizer
      第 43 回日本神経科学大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ミツバチと原始的なハチ目昆虫カブラハバチにおける脳高次中枢キノコ体の遺伝子発現および機能の比較解析  日2020

    • Author(s)
      桑原嵩佳・河野大輝・畠山正統・久保健雄
    • Organizer
      日本動物学会第91回大会2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] ハチ目昆虫の行動進化の脳基盤~ミツバチと原始的なハチ目昆虫カブラハバチのキノコ体の比較生理学的解析~2020

    • Author(s)
      桑原嵩佳・河野大輝・畠山正統・久保健雄
    • Organizer
      日本進化学会第22回オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Comparative analysis of the mushroom body Kenyon cell subtypes between a eusocial honeybee and a primitive hymenopteran insect, sawfly2020

    • Author(s)
      Takayoshi Kuwabara, Hiroki Kohno, Masatsugu Hatakeyama, Takeo Kubo
    • Organizer
      日本比較生理生化学会 第42回山形大会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 理学部公開URL 「ハチ目における脳神経細胞の進化動態の解明 -多機能型から機能特化型へ-」

    • URL

      https://www.s.u-tokyo.ac.jp/ja/press/2023/8416/

    • Related Report
      2022 Annual Research Report
  • [Remarks] UTokyo FOCUS 'The evolution of honey bee brains'

    • URL

      https://www.u-tokyo.ac.jp/focus/en/press/z0508_00289.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 東京大学 大学院理学系研究科 生物科学専攻 細胞生理化学研究室

    • URL

      http://www.bs.s.u-tokyo.ac.jp/~saibou/

    • Related Report
      2021 Annual Research Report

URL: 

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

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