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Identification and dynamic analysis of true stem cells in testicular stem cells using the latest single cell analysis method

Research Project

Project/Area Number 19K07250
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionYokohama City University

Principal Investigator

OHBO Kazuyuki  横浜市立大学, 医学研究科, 教授 (70250751)

Co-Investigator(Kenkyū-buntansha) 富澤 信一  横浜市立大学, 医学部, 講師 (00704628)
尾野 道男  横浜市立大学, 医学部, 助教 (50264601)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords組織幹細胞 / 精子形成細胞 / シングルセル解析 / エピジェネティクス / 精原細胞 / 生殖細胞 / 幹細胞 / 配偶子 / 精巣 / シングルセル
Outline of Research at the Start

生き物が途絶えることなく生存していくため、精子や卵子が正しい情報を伝えることにより、受精後の次の世代が病気になったり、そのまた次の世代を作れなくなったりすることを防いています。本研究は、エピジェネティクスという遺伝子の化学修飾の特徴を指標に、個体の一生涯、精子を作り続ける元となる幹細胞がどのような細胞なのか、その特徴を調べることにより、次世代を作る一番の元となる精子形成の仕組みを明らかにします。

Outline of Final Research Achievements

Single-cell analysis is rapidly evolving as a useful technology for understanding cell subpopulations of different character. Undifferentiated spermatogonia are considered as similar type of cells but have been reportedly found to be heterogeneous in terms of marker expressions. In this case, the scNMT method, which analyses three different analyses from a single cell - gene expression plus DNA methylation and chromatin accessibility - is considered to lead to a more precise understanding of the cell population in undifferentiated spermatogonia, and an attempt has been made to introduce this methodology on a stable basis in our laboratory.

Academic Significance and Societal Importance of the Research Achievements

結婚の高年齢化と婚姻率の低下が社会問題となっている日本において、挙児希望カップルの10組に1組が不妊であると報告されており、その半分が男性不妊である。男性不妊の原因は、一番元となる幹細胞から精子になるまで様々なステップで起こる。本研究では、幹細胞の異常を見つけるために、まず正常の幹細胞がどのような細胞集団なのか、1個ずつの細胞レベルで明らかにする研究である。

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

    (12 results)

All 2023 2021 Other

All Int'l Joint Research (4 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (2 results) Remarks (3 results)

  • [Int'l Joint Research] Babraham Institute(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Technische Universitaet Dresden(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Babraham Institute(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Babraham Institute(英国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Tsga8 is required for spermatid morphogenesis and male fertility in mice2021

    • Author(s)
      Kobayashi Yuki、Tomizawa Shin-ichi、Ono Michio、Kuroha Kazushige、Minamizawa Keisuke、Natsume Koji、Dizdarevic Selma、Dockal Ivana、Tanaka Hiromitsu、Kawagoe Tatsukata、Seki Masahide、Suzuki Yutaka、Ogonuki Narumi、Inoue Kimiko、Matoba Shogo、Anastassiadis Konstantinos、Mizuki Nobuhisa、Ogura Atsuo、Ohbo Kazuyuki
    • Journal Title

      Development

      Volume: 148 Issue: 8

    • DOI

      10.1242/dev.196212

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Maintenance DNA methylation in pre-meiotic germ cells regulates meiotic prophase by facilitating homologous chromosome pairing2021

    • Author(s)
      Takada Yuki、Yaman-Deveci Ruken、Shirakawa Takayuki、Sharif Jafar、Tomizawa Shin-ichi、Miura Fumihito、Ito Takashi、Ono Michio、Nakajima Kuniko、Koseki Yoko、Shiotani Fuyuko、Ishiguro Kei-ichiro、Ohbo Kazuyuki、Koseki Haruhiko
    • Journal Title

      Development

      Volume: 148 Issue: 10

    • DOI

      10.1242/dev.194605

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Father-to-offspring transmission of extremely long NOTCH2NLC repeat expansions with contractions: genetic and epigenetic profiling with long-read sequencing2021

    • Author(s)
      Fukuda H, Yamaguchi D, Nyquist K, Yabuki Y, Miyatake S, Uchiyama Y, Hamanaka K, Saida K, Koshimizu E, Tsuchida N, Fujita A, Mitsuhashi S, Ohbo K, Satake Y, Sone J, Doi H, Morihara K, Okamoto T, Takahashi Y, Wenger AM, Shioda N, Tanaka F, Matsumoto N, Mizuguchi T
    • Journal Title

      Clin Epigenetics

      Volume: 13 Issue: 1 Pages: 204-204

    • DOI

      10.1186/s13148-021-01192-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Role of a novel protease inhibitor for spermatogenesis and immune homeostasis2023

    • Author(s)
      富澤信一, Rachel Fellows, 尾野道男, 黒羽一誠, Ivana Dockal, 南澤恵佑, 鈴木穣, 才津 浩智, 大保和之
    • Organizer
      第128回日本解剖学会総会・全国学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Cryptorchidism induces abnormal epigenetic and transcriptional signatures in spermatogonia2023

    • Author(s)
      尾野道男, Ivana Dockal, Uros Radovic, 大保和之, 富澤信一
    • Organizer
      第128回日本解剖学会総会・全国学術総会
    • Related Report
      2022 Annual Research Report
  • [Remarks] 横浜市立大学医学部組織学

    • URL

      http://www-user.yokohama-cu.ac.jp/~finemorp/lecprac.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 横浜h市立大学医学部組織学

    • URL

      http://www-user.yokohama-cu.ac.jp/~finemorp/cn1/LfPIwBtTI.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 横浜市立大学医学部組織学ホームページ

    • URL

      http://www-user.yokohama-cu.ac.jp/~finemorp/index.html

    • Related Report
      2019 Research-status Report

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

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