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Functional analysis and culture of human spermatogonial stem cells

Research Project

Project/Area Number 19K22512
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 48:Biomedical structure and function and related fields
Research InstitutionKyoto University

Principal Investigator

Shinohara Takashi  京都大学, 医学研究科, 教授 (30322770)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords精子形成 / 精子幹細胞 / ヒト / 幹細胞 / 培養
Outline of Research at the Start

げっ歯類の精子幹細胞研究の進展に伴い、海外ではヒトの精子幹細胞研究に興味が高まっている(Nat Med 2013;19:958)。しかしながら、ヒトの精子幹細胞についてはこれまでほとんど研究されておらず、その同定すら困難である。幹細胞は機能的にしか同定できないため、ヒトの精子幹細胞の機能的アッセイの同定は重要な課題である。そこで本研究ではこの問題を解決するためにヒト精子幹細胞のin vivoもしくはin itroの機能的アッセイ系の確立を目指すと共にヒト精子幹細胞の試験管内での自己複製の再現を試みる。

Outline of Final Research Achievements

To set up a culture system for human spermatogonial stem cells (SSCs), we established a method for enzymatic digestion of human testis cells. Based on the gene expression patterns in mouse SSCs, we screened monoclonal antibodies that can react with human SSCs. Through this screening, we found that human spermatogonial stem cells express Epha2 on their surface. The frequency of cells expressing Epha2 in the testis is significantly lower than those previously reported for human SSCs. This purification protocol was useful for starting human SSC cultures without the contamination of testicular somatic cells. By adjusting the culture conditions, we were able to derive two candidate SSC cultures. However, we still have not been able to collect these cells for functional analysis because they died upon dissociation into single cells by trypsin. We are currently taking different approaches to determine their SSC activity.

Academic Significance and Societal Importance of the Research Achievements

癌治療成績の向上に伴い、小児の約7-8割の患者が生存し、20代の若者250人に一人が癌治療の生存者である。ところが、治療の副作用として半分程度の患者が不妊となっている。ヒト精子幹細胞の培養が成功すれば、この細胞をがん治療前の患者さんの精巣から回収し、試験管内で増幅したのちに治療後の精巣に移植するすることで妊孕性を回復することができると期待されている。今回の研究によりヒト精子幹細胞の培養条件が改善し、近い将来ヒトへの応用も可能になると期待できる。

Report

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

    (17 results)

All 2022 2021 2020 2019

All Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 7 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Spermatogonial stem cell transplantation into nonablated mouse recipient testes2022

    • Author(s)
      Hiroko Morimoto, Narumi Ogonuki, Mito Kanatsu-Shinohara , Shogo Matoba , Atsuo Ogura , Takashi Shinohara
    • Journal Title

      Stem cell reports

      Volume: 16 Issue: 7 Pages: 1832-1844

    • DOI

      10.1016/j.stemcr.2021.05.013

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genomic stability of mouse spermatogonial stem cells in vitro.2021

    • Author(s)
      Chuma S, Kanatsu-Shinohara M, Katanaya A, Hosokawa M, Shinohara T.
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 24199-24199

    • DOI

      10.1038/s41598-021-03658-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cdc42 is required for male germline niche development in mice.2021

    • Author(s)
      Mori Y, Takashima S, Kanatsu-Shinohara M, Yi Z, Shinohara T.
    • Journal Title

      Cell Rep

      Volume: 36 Issue: 7 Pages: 109550-109550

    • DOI

      10.1016/j.celrep.2021.109550

    • NAID

      120007141735

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] OGG1 protects mouse spermatogonial stem cells from reactive oxygen species in culture2021

    • Author(s)
      Mori Y, Ogonuki N, Hasegawa A, Kanatsu-Shinohara M, Ogura A, Wang Y, McCarrey JR, Shinohara T.
    • Journal Title

      Biol Reprod

      Volume: 104 Issue: 3 Pages: 706-716

    • DOI

      10.1093/biolre/ioaa216

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] CD2 is a surface marker for mouse and rat spermatogonial stem cells.2020

    • Author(s)
      Kanatsu-Shinohara M, Chen G, Morimoto H, Shinohara T.
    • Journal Title

      J Reprod Dev.

      Volume: Mar 26. Issue: 4 Pages: 1-32

    • DOI

      10.1262/jrd.2020-019

    • NAID

      130007888738

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Autologous transplantation of spermatogonial stem cells restores fertility in congenitally infertile mice2020

    • Author(s)
      Kanatsu-Shinohara Mito、Ogonuki Narumi、Matoba Shogo、Ogura Atsuo、Shinohara Takashi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 117 Issue: 14 Pages: 7837-7844

    • DOI

      10.1073/pnas.1914963117

    • NAID

      120006826644

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transgenesis and genome editing of mouse spermatogonial stem cells by lentivirus pseudotyped with Sendai virus F protein.2020

    • Author(s)
      Shinohara, T. and Kanatsu-Shinohara, M.
    • Journal Title

      Stem Cell Reports

      Volume: 14 Issue: 3 Pages: 447-461

    • DOI

      10.1016/j.stemcr.2020.02.001

    • NAID

      120006936408

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression and functional analyses of EPHA2 in mouse spermatogonial stem cells.2020

    • Author(s)
      Morimoto, H., Kanatsu-Shinohara, M., Orwig, K. E. and Shinohara, T.
    • Journal Title

      Biol. Reprod.

      Volume: 102 Issue: 1 Pages: 220-232

    • DOI

      10.1093/biolre/ioz156

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ROS amplification drives mouse spermatogonial stem cell self-renewal.2019

    • Author(s)
      Morimoto H, Kanatsu-Shinohara M, Ogonuki N, Kamimura S, Ogura A, Yabe-Nishimura C, Mori Y, Morimoto T, Watanabe S, Otsu K, Yamamoto T, *Shinohara T.
    • Journal Title

      Life Sci Alliance

      Volume: 2 Issue: 2 Pages: 2-2

    • DOI

      10.26508/lsa.201900374

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aging of spermatogonial stem cells by Jnk-mediated glycolysis activation.2019

    • Author(s)
      Kanatsu-Shinohara, M., Yamamoto, T., Toh, H., Kazuki, Y., Kazuki, K., Imoto, J., Ikeo, K., Oshima, M., Shirahige, K., Iwama, A., Nabeshima, Y., Sasaki, H. and Shinohara, T.
    • Journal Title

      PNAS

      Volume: 116 Issue: 33 Pages: 16404-16409

    • DOI

      10.1073/pnas.1904980116

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 不妊症の遺伝子治療2022

    • Author(s)
      篠原隆司
    • Organizer
      生殖細胞と減数分裂研究の過去、現在、未来"およびサテライトシンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 不妊症の遺伝子治療2021

    • Author(s)
      篠原隆司
    • Organizer
      理研バイオリソースセンター設立20周年記念シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Effect of spermatogonial manipulation on offspring2021

    • Author(s)
      Takashi Shinohara
    • Organizer
      Molecular and cellular mechanisms of brain systems generating individuality
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 宇宙環境が精子幹細胞に及ぼす影響についての解析2019

    • Author(s)
      篠原隆司
    • Organizer
      日本宇宙生物科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 精子幹細胞の老化メカニズム2019

    • Author(s)
      篠原隆司
    • Organizer
      若手支援技術講習会
    • Related Report
      2019 Research-status Report
  • [Presentation] Aging of spermatogonial stem cells. Long Lie spermatogonial stem cells!2019

    • Author(s)
      Takashi Shinohara
    • Organizer
      Brinster Symposium
    • Related Report
      2019 Research-status Report
  • [Presentation] 精子幹細胞の移植による妊孕性の回復2019

    • Author(s)
      篠原隆司
    • Organizer
      日本アンドロロジー学会
    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2023-01-30  

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