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Histone modifications in regulating the balance between self-renewal and differentiation of spermatogonia

Research Project

Project/Area Number 17K07132
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Laboratory animal science
Research InstitutionThe University of Tokyo

Principal Investigator

Ozawa Manabu  東京大学, 医科学研究所, 准教授 (80608787)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords精子形成 / 精原細胞 / エピジェネティクス / ヒストン / 制限幹細胞 / 精巣 / 精原幹細胞 / 発生・分化 / 細胞・組織
Outline of Final Research Achievements

Aim of the project is to clarify the function of Fbxl11, a histone demethylase, in spermatogenesis. We have generated and analyzed germ cell-specific Fbxl11 knockout (Fbxl11 cKO) mice. The results showed that Fbxl11 cKO mice were infertile due to marked suppression of spermatogonial differentiation, while self-renew of spermatogonia was not significantly affected. Furthermore, the poor ability for spermatogonial differentiation in Fbxl11 cKO was due to a reduction of mTORC activity in spermatogonia. These results suggest that Fbxl11 regulates spermatogonial differentiation through mTOR signaling.

Academic Significance and Societal Importance of the Research Achievements

生殖細胞は次世代に遺伝情報を伝達しうる唯一の細胞系譜であり、その発生を制御する分子基盤を明らかにすることは基礎科学的に極めて興味深い分野であると同時に、不妊・不育が大きな問題となっている今日において社会的にも希求性の高い研究である。本研究では、ヒストン脱メチル化酵素Fbxl11がmTORシグナルを介して精原細胞の分化を調節することを明らかにしており、エピジェネティクス制御を介した精原細胞のホメオスタシス維持機構を理解する上で重要な知見となる。さらに、本研究の成果は新たな不妊治療技術を開発するための一助となることも期待できる。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (14 results)

All 2020 2019 2018 2017

All Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (7 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Generation of a p16 Reporter Mouse and Its Use to Characterize and Target p16high Cells In Vivo.2020

    • Author(s)
      Omori S, Wang TW, Johmura Y, ..., Sakamoto T (15番目), ..., Nakanishi M.
    • Journal Title

      Cell Metab

      Volume: 32 Issue: 5 Pages: 814-828

    • DOI

      10.1016/j.cmet.2020.09.006

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] RNA-binding protein Ptbp1 regulates alternative splicing and transcriptome in spermatogonia and maintains spermatogenesis in concert with Nanos32020

    • Author(s)
      SENOO Manami、HOZOJI Hiroshi、ISHIKAWA-YAMAUCHI Yu、TAKIJIRI Takashi、OHTA Sho、UKAI Tomoyo、KABATA Mio、YAMAMOTO Takuya、YAMADA Yasuhiro、IKAWA Masahito、OZAWA Manabu
    • Journal Title

      Journal of Reproduction and Development

      Volume: 66 Issue: 5 Pages: 459-467

    • DOI

      10.1262/jrd.2020-060

    • NAID

      130007925613

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NELL2-mediated lumicrine signaling through OVCH2 is required for male fertility. Science.2020

    • Author(s)
      Kiyozumi D, Noda T, Yamaguchi R, Tobita T, Matsumura T, Shimada K, Kodani M, Kohda T, Fujihara Y, Ozawa M, Yu Z, Miklossy G, Bohren KM, Horie M, Okabe M, Matzuk MM, Ikawa M.
    • Journal Title

      Science.

      Volume: 368 Issue: 6495 Pages: 1132-1135

    • DOI

      10.1126/science.aay5134

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cell-type dependent enhancer binding of the EWS/ATF1 fusion gene in clear cell sarcomas2019

    • Author(s)
      Komura S, Ito Kenji、Ohta ShoUkai Tomoyo、Kabata Mio、Itakura Fumiaki、Semi Katsunori、Matsuda Yutaka、Hashimoto Kyoichi、Shibata Hirofumi、Sone Masamitsu、Jo Norihide、Sekiguchi Kazuya、Ohno Takatoshi、Akiyama Haruhiko、Shimizu Katsuji、Woltjen Knut、Ozawa Manabu、Toguchida Junya、Yamamoto Takuya、Yamada Yasuhiro
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 3999-3999

    • DOI

      10.1038/s41467-019-11745-1

    • NAID

      120006719352

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] PTBP1 contributes to spermatogenesis through regulation of proliferation in spermatogonia2019

    • Author(s)
      SENOO Manami、TAKIJIRI Takashi、YOSHIDA Nobuaki、OZAWA Manabu、IKAWA Masahito
    • Journal Title

      Journal of Reproduction and Development

      Volume: 65 Issue: 1 Pages: 37-46

    • DOI

      10.1262/jrd.2018-109

    • NAID

      130007594357

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] RNA-binding protein Ptbp1 is essential for BCR-mediated antibody production2018

    • Author(s)
      Sasanuma Hiroki、Ozawa Manabu、Yoshida Nobuaki
    • Journal Title

      International Immunology

      Volume: 31 Issue: 3 Pages: 157-166

    • DOI

      10.1093/intimm/dxy077

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] WNT regulation of embryonic development likely involves pathways independent of nuclear CTNNB12017

    • Author(s)
      Tribulo Paula、Moss James I、Ozawa Manabu、Jiang Zongliang、Tian Xiuchun (Cindy)、Hansen Peter J
    • Journal Title

      Reproduction

      Volume: 153 Issue: 4 Pages: 405-419

    • DOI

      10.1530/rep-16-0610

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] RNA結合タンパク質PTBP1は精原細胞の増殖性を制御することで精子形成に寄与する2019

    • Author(s)
      小沢 学,妹尾 真奈美,伊川 正人
    • Organizer
      第112回日本繁殖生物学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Polypyrimidine tract binding protein (Ptbp1) expression by Sertoli cells is essential for sperm production2019

    • Author(s)
      Ozawa M, Senoo M, Takijiri T, Yamamoto T, Yamada Y, Ikawa M
    • Organizer
      Society for the Study of Reproduction
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] RNA 結合タンパク質 PTBP1 は精原細胞の増殖性を制御することで精子形成に寄与する2019

    • Author(s)
      小沢学、妹尾真奈美、山田泰広、伊川正人
    • Organizer
      東京大学生命科学シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] セルトリ細胞で発現するRNA結合タンパク質Ptbp1は精子形成に不可欠である2018

    • Author(s)
      小沢学、吉田進昭、伊川正人
    • Organizer
      日本繁殖生物学会大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Polypyrimidine tract binding protein (Ptbp1) expression by Sertoli cells is essential for sperm production2018

    • Author(s)
      Ozawa M, Ikawa M, Yoshida N
    • Organizer
      Society for the Study of Reproduction
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Polypyrimidine tract binding protein (Ptbp1) expression by Sertoli cells is essential for sperm production2018

    • Author(s)
      Ozawa M, Ikawa M, Yoshida N.
    • Organizer
      Society for the Study of Reproduction
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] The histone demethylase KDM2A regulates differentiation of spermatogonia in mice.2017

    • Author(s)
      Ozawa M, Kawakami E, Tokunaga A, Sakamoto R, Yoshida N.
    • Organizer
      World Congress of Reproductive Biology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2022-01-27  

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