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Evolutionary differentiation of androgen receptor responsible for sexual characteristics development

Research Project

Project/Area Number 19K06741
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44040:Morphology and anatomical structure-related
Research InstitutionKyushu University

Principal Investigator

Ogino Yukiko  九州大学, 農学研究院, 准教授 (00404343)

Project Period (FY) 2019-04-01 – 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 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsアンドロゲン / 遺伝子重複 / 多様化 / 二次性徴 / メダカ / ゲノム重複 / 雄性形質
Outline of Research at the Start

本研究では、真骨魚類をモデルとし、アンドロゲン受容体(AR)遺伝子のゲノム重複に伴う重複・新機能獲得と、形態・神経機能における二次性徴形質の多様化との関連性の解明を進める。メダカAR変異体を用いた表現型解析から、形態・神経機能におけるARパラログの機能の相違を明らかにする。それぞれのARパラログがFLAGとの融合遺伝子として発現するノックインメダカを用いて、二次性徴発現過程における発現動態を解析する。さらにChIPseq、ATACseqを用いた連鎖解析によりARパラログ特異的なアンドロゲン応答ゲノム領域、下流標的遺伝子を同定し、ARパラログ特異的な転写制御機構を明らかにする。

Outline of Final Research Achievements

Teleost fishes exhibit complex sexual characteristics in response to androgens. However, the molecular mechanisms underlying their evolutionary acquisition remain largely unknown. To address this question, we analyzed medaka mutants deficient in teleost-specific androgen receptor ohnologs (ara and arb). We found that both ara and arb are required in males to achieve efficient reproductive success; ara and arb are functionally redundant in the regulation of courtship display but have divergent roles in other morphological and behavioral sexual characteristics. Unexpectedly, both ar ohnologs are not essential for spermatogenesis in medaka, which may have permitted the ar evolution in teleosts by reducing part of the functional constraints on the gene(s). We also demonstrated that differences in transcriptional regulation and intracellular localization could account for the divergent roles of ar ohnologs in the development of the sexual characteristics of teleosts.

Academic Significance and Societal Importance of the Research Achievements

これまで、重複遺伝子群は、祖先的な役割を保ちながら、役割を新たに獲得、あるいは分担することにより、より複雑な仕組みを作り上げると理解されてきた。本研究により、祖先遺伝子が担っていた役割を大胆に捨て、かつコピー数を増やして仕事の分担を進めて特殊化していったことにより、真骨魚類の多様化と繁栄をもたらした多様な二次性徴形質が獲得されたと考えられた。魚の美しさや行動の多様化と全ゲノム重複によるアンドロゲン受容体遺伝子の重複進化との関連性を詳細に示した最初の例であり、生物の性的特徴の多様化とゲノム進化の関係を探る上で大きな一歩を示した。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 1 results,  Invited: 4 results) Remarks (2 results)

  • [Int'l Joint Research] University of California, San Diego(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Evolutionary differentiation of androgen receptor is responsible for sexual characteristic development in a teleost fish2023

    • Author(s)
      Y. Ogino, S. Ansai, E. Watanabe, M. Yasugi, Y. Katayama, H. Sakamoto, K. Okamoto, K. Okubo, Y. Yamamoto, I. Hara, T. Yamazaki, A. Kato, Y. Kamei, K. Naruse, K. Ohta, H. Ogino, T. Sakamoto, S. Miyagawa, T. Sato, G. Yamada, M. Baker & T. Iguchi
    • Journal Title

      Nature communications

      Volume: 14 Issue: 1 Pages: 1428-1428

    • DOI

      10.1038/s41467-023-37026-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] アンドロゲン受容体の重複進化による魚類の性的二型形質の多様化2023

    • Author(s)
      荻野由紀子
    • Organizer
      NBRP主催シンポジウム「バイオリソースで解決する21世紀の社会課題」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 仮題:魚類の性的二型形質の多様化の遺伝基盤2023

    • Author(s)
      荻野由紀子
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] アンドロゲン受容体の重複と機能分化から見る魚類の性的二型形質の多様化2022

    • Author(s)
      荻野由紀子
    • Organizer
      2022年度日本魚類学会シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Regulation of androgen-dependent sexual character development in Japanese medaka: Combinatorial analyses of RNA-seq and ATAC-seq2021

    • Author(s)
      Yukiko Ogino, Satoshi Ansai, Taisen Iguchi
    • Organizer
      54th Annual Meeting of Japan Society of Developmental Biologists
    • Related Report
      2021 Research-status Report
  • [Presentation] アンドロゲン依存的な二次性徴形質の領域特異的な発現制御2021

    • Author(s)
      荻野由紀子、岡本啓吾、安齋 賢、井口泰泉
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Regulation of tissue-specific sex characteristics development in Medaka: Combinatorial analyses of RNAseq and ATACseq2020

    • Author(s)
      Yukiko Ogino, Satoshi Ansai, Taisen Iguchi
    • Organizer
      第43回 日本分子生物学会年会 (MBSJ2020)
    • Related Report
      2020 Research-status Report
  • [Presentation] Functional analysis of two distinct paralogs of androgen receptor for the sex characteristics development in medaka,2019

    • Author(s)
      Yukiko Ogino, Hirotaka Sakamoto, Eiji Watanabe, Satoshi Ansai, Kiyoshi Naruse, Taisen Iguchi
    • Organizer
      52nd Annual Meeting of JSDB cosponsored by APDBN
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 魚類の多彩な繁殖様式を導く二次性徴形質の多様化と進化の分子基盤2019

    • Author(s)
      荻野由紀子、坂本浩隆、渡辺英治、安齋 賢、井口泰泉
    • Organizer
      第90回日本動物学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Molecular basis of androgen dependent sex characteristics development and evolution with teleost fishes as model species2019

    • Author(s)
      Yukiko Ogino, Satoshi Ansai, Hirotaka Sakamoto, Eiji Watanabe, Kiyoshi Naruse and Taisen Iguchi
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] 九州大学プレスリリース「アンドロゲン受容体の重複進化による、”かたちと繁殖行動”の多様化

    • URL

      https://www.kyushu-u.ac.jp/f/52073/23_0327_01.pdf

    • Related Report
      2022 Annual Research Report
  • [Remarks] 九州大学大学院 農学研究院 資源生物科学専攻 動物・海洋生物科学教育コース 水族分子発生学研究室

    • URL

      http://www.agr.kyushu-u.ac.jp/lab/ogino-lab/

    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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