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Elucidation of the structure and formation mechanism of seminiferous tubules using three-dimensional analysis

Research Project

Project/Area Number 21K06730
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionKomatsu University (2022-2023)
Kanazawa University (2021)

Principal Investigator

Nakata Hiroki  公立小松大学, 保健医療学部, 教授 (80638304)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords三次元再構築 / 精巣輸出管 / 精巣上体管 / 精細管 / 精巣 / 深層学習 / 精路 / 男性不妊症 / 3D / ヒト / 精巣索 / 精巣上体
Outline of Research at the Start

精巣を含む精子の通り道(精路)の研究の発展には詳細な形態学的情報が不可欠である。本研究では、深層学習を用いた三次元再構築法でヒト精路の三次元構造を明らかにする。また実験動物の胎児期精路の詳細も明らかにする。さらに、精子形成の開始位置が偏らないマウスと一部の精細管でのみ精子形成が開始するマウスを作製・解析することで、精細管の規則的な三次元構造が精子形成の開始位置と関係があるかを明らかにする。

Outline of Final Research Achievements

Detailed morphological information is essential for the development of research on reproductive tracts, including the testis. In this study, serial sections were prepared and three-dimensional reconstruction of the reproductive tract was performed using deep learning. We were able to reveal the detailed three-dimensional structures of the human efferent ducts and epididymal duct and the fetal reproductive tracts of experimental animals (mice and rats).

Academic Significance and Societal Importance of the Research Achievements

深層学習を用いることで、ヒト精巣輸出管・精巣上体管と実験動物(マウス・ラット)の胎児期精路を再構築し、その正確な三次元構造を明らかにした。本研究成果は、男性不妊症に関連する解剖学的異常の解析に有用であると考えられる。また、本研究で開発した方法は、精路以外の構造の詳細を明らかにする研究にも応用可能であると考えられる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (10 results) (of which Invited: 1 results)

  • [Journal Article] Three‐dimensional analysis of junctions between efferent and epididymal ducts in the human caput epididymis2024

    • Author(s)
      Nakata Hiroki、Iseki Shoichi、Mizokami Atsushi
    • Journal Title

      Andrology

      Volume: 12 Issue: 1 Pages: 87-97

    • DOI

      10.1111/andr.13445

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expression patterns of sex steroid receptors in developing mesonephros of the male mouse: three-dimensional analysis2023

    • Author(s)
      Omotehara Takuya、Hess Rex A.、Nakata Hiroki、Birch Lynn A.、Prins Gail S.、Itoh Masahiro
    • Journal Title

      Cell and Tissue Research

      Volume: 393 Issue: 3 Pages: 577-593

    • DOI

      10.1007/s00441-023-03796-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Three-dimensional analysis and in vivo imaging for sperm release and transport in the murine seminiferous tubule2022

    • Author(s)
      Kanazawa Yuta、Omotehara Takuya、Nakata Hiroki、Hirashima Tsuyoshi、Itoh Masahiro
    • Journal Title

      Reproduction

      Volume: 164 Issue: 1 Pages: 9-18

    • DOI

      10.1530/rep-21-0400

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative anatomy on the development of sperm transporting pathway between the testis and mesonephros2022

    • Author(s)
      Omotehara Takuya、Nakata Hiroki、Nagahori Kenta、Itoh Masahiro
    • Journal Title

      Histochemistry and Cell Biology

      Volume: 157 Issue: 3 Pages: 321-332

    • DOI

      10.1007/s00418-021-02057-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three‐dimensional structure of testis cords in mice and rats2021

    • Author(s)
      Nakata Hiroki、Omotehara Takuya、Itoh Masahiro、Iseki Shoichi、Mizokami Atsushi
    • Journal Title

      Andrology

      Volume: 9 Issue: 6 Pages: 1911-1922

    • DOI

      10.1111/andr.13069

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three‐dimensional reconstruction of testis cords/seminiferous tubules2021

    • Author(s)
      Nakata Hiroki、Iseki Shoichi、Mizokami Atsushi
    • Journal Title

      Reproductive Medicine and Biology

      Volume: 20 Issue: 4 Pages: 402-409

    • DOI

      10.1002/rmb2.12413

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-dimensional morphological analysis of spermatogenesis in aged mouse testes2021

    • Author(s)
      Nakano Taito、Nakata Hiroki、Kadomoto Suguru、Iwamoto Hiroaki、Yaegashi Hiroshi、Iijima Masashi、Kawaguchi Shohei、Nohara Takahiro、Shigehara Kazuyoshi、Izumi Kouji、Kadono Yoshifumi、Mizokami Atsushi
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41598-021-02443-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three‐dimensional analysis of mesonephric tubules remodeling into efferent tubules in the male mouse embryo2021

    • Author(s)
      Omotehara Takuya、Nakata Hiroki、Itoh Masahiro
    • Journal Title

      Developmental Dynamics

      Volume: 251 Issue: 3 Pages: 513-524

    • DOI

      10.1002/dvdy.410

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] ヒト精巣輸出管・上体管の三次元構造2024

    • Author(s)
      仲田浩規, 井関尚一, 溝上敦
    • Organizer
      第129回日本解剖学会総会・全国学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヒト精巣輸出管・上体管の三次元構造2023

    • Author(s)
      仲田浩規, 井関尚一, 溝上敦
    • Organizer
      日本アンドロロジー学会第42回学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヒト精巣輸出管・上体管の三次元構造2023

    • Author(s)
      仲田浩規, 井関尚一, 溝上敦
    • Organizer
      第83回日本解剖学会 中部支部学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ビタミンA欠乏モデルマウスにおける精子形成障害と回復の三次元解析2023

    • Author(s)
      川尻彩夏, 仲田浩規
    • Organizer
      第83回日本解剖学会 中部支部学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 胎児期マウス・ラット精巣索の三次元構造2022

    • Author(s)
      仲田浩規,表原拓也,伊藤正裕,井関尚一,溝上敦
    • Organizer
      第62回日本先天異常学会学術集
    • Related Report
      2022 Research-status Report
  • [Presentation] マウス・ラット精巣索の3次元構造2022

    • Author(s)
      仲田浩規, 表原拓也, 伊藤正裕, 井関尚一, 溝上敦
    • Organizer
      第127回日本解剖学会総会・全国学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 精巣と精子形成障害の三次元解析2021

    • Author(s)
      仲田浩規
    • Organizer
      第31回精子形成・精巣毒性研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] マウス・ラット精巣索の3次元構造2021

    • Author(s)
      仲田浩規, 表原拓也, 伊藤正裕, 溝上敦
    • Organizer
      日本アンドロロジー学会第40回学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] マウス・ラット精巣索の3次元構造2021

    • Author(s)
      仲田浩規, 表原拓也, 伊藤正裕, 井関尚一, 溝上敦
    • Organizer
      第81回日本解剖学会中部支部学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 精子形成障害モデルマウスの三次元解析2021

    • Author(s)
      仲田浩規, 溝上敦
    • Organizer
      第109回日本泌尿器科学会総会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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