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Lineage dynamics and heterogeneity of primordial germ cells producing primordial follicles

Research Project

Project/Area Number 21K15111
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 44020:Developmental biology-related
Research InstitutionNational Institute for Basic Biology

Principal Investigator

Ikeda Tatsuro  基礎生物学研究所, 生殖細胞研究部門, 特任助教 (60803963)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsマウス / 始原生殖細胞 / 原始卵胞 / 卵母細胞 / 細胞系譜 / クローン / バーコード / 遺伝子発現 / 成熟卵 / 不均一性
Outline of Research at the Start

ほ乳類の卵は新生仔期に作られた原始卵胞のストックを段階的に発育して産生される。原始卵胞は胎仔に生じた始原生殖細胞(PGC)から作られる。個々のPGCに由来する原始卵胞の数と質は不均一であることが示唆されているが、詳細は不明である。
本研究では雌マウスの個々のPGCを多様なDNA配列で標識し、その運命を総体的に追跡することにより、PGCが作り出す原始卵胞の数と質の不均一性を定量的に評価し、より多数の原始卵胞ストックを作り出すPGCの特性を探索する。

Outline of Final Research Achievements

First, we labeled mouse primordial germ cells (PGCs) with diverse DNA barcodes and then measured the temporal changes in barcode distribution during ovarian development. Barcode reduction was observed during both the process of PGCs migrating to the ovaries and the process of primordial follicles arising from PGCs that entered the ovaries, suggesting the pruning of PGC clones. However, at the clonal unit level of early PGCs, the repertoire of clones was maintained after entering the ovaries.
Additionally, we simultaneously measured the barcodes and gene expression of barcode-labeled ovarian PGCs at the single-cell level. A bias in gene expression correlated with clones was detected, suggesting that this difference might lead to variations in the quality of primordial follicles.

Academic Significance and Societal Importance of the Research Achievements

本研究で雌のPGCsが原始卵胞ストックそして次世代を作る過程をクローン解像度で明らかにしたことで、クローンの動態が雌性生殖細胞の発生と遺伝に与えるインパクトを調べる基礎ができた。また、由来するPGCクローンに依存して生殖細胞の質が変わる可能性を示すデータを得て、新たな問いを提起することができた。
ヒトや他の資源生物においても原始卵胞の質とクローナリティは妊孕性や遺伝の原理に直結する重要な問題である。本研究によるマウスをモデルとした雌性生殖系列のクローン動態の理解は、不妊治療や育種技術の改良に貢献して将来的に社会に還元されると期待できる。

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 Other

All Int'l Joint Research (3 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Remarks (3 results)

  • [Int'l Joint Research] ドイツ癌研究センター(DKFZ)/ハイデルベルク大学(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ドイツ癌研究センター(DKFZ)/ハイデルベルク大学(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ドイツ癌研究センター/ハイデルベルク大学(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Presentation] バーコード分布の数理モデリングによる始原生殖細胞のクローン動態推定2024

    • Author(s)
      池田 達郎
    • Organizer
      第11回細胞競合コロキウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Clonal selection and diversity preservation in the male germline2023

    • Author(s)
      Tatsuro Ikeda
    • Organizer
      87th Cold Spring Harbor Laboratory Symposium on Quantitative Biology "Stem Cells"
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 雄マウスの生殖細胞系列におけるクローンの選択と集団自律性2023

    • Author(s)
      池田 達郎
    • Organizer
      第75回日本細胞生物学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Clonal selection and diversity preservation in the male germline2023

    • Author(s)
      Tatsuro Ikeda
    • Organizer
      2023 Oz Single Cell Conference "Clonal Biology"
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] DNAバーコードによる細胞系譜追跡法の発生研究における適用例とその将来性2022

    • Author(s)
      池田達郎
    • Organizer
      NGS発生生物学現場の会2022
    • Related Report
      2022 Research-status Report
  • [Presentation] Clonal dynamics in the murine male germline - From primordial germ cells to spermatogonial stem cells, and the next generation2022

    • Author(s)
      Tatsuro Ikeda, Maurice Langhinrichs, Tamar Nizharadze, Hans-Reimer Rodewald, Thomas Hoefer, Shosei Yoshida
    • Organizer
      The International Symposium "Totipotency and Germ Cell Development"
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Clonal dynamics in the murine male germline from primordial germ cells to spermatogonial stem cells, and the next generation2022

    • Author(s)
      Tatsuro Ikeda, Maurice Langhinrichs, Tamar Nizharadze, Hans-Reimer Rodewald, Thomas Hoefer, Shosei Yoshida
    • Organizer
      19th International Congress of Developmental Biology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Clonal dynamics in the murine male germline - From primordial germ cells to spermatogonial stem cells, and the next generation2022

    • Author(s)
      Tatsuro Ikeda, Maurice Langhinrichs, Tamar Nizharadze, Hans-Reimer Rodewald, Thomas Hoefer, Shosei Yoshida
    • Organizer
      COS Symposium
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Clonal dynamics in the murine male germline - From primordial germ cells to spermatogonial stem cells, and the next generation2022

    • Author(s)
      Tatsuro Ikeda, Maurice Langhinrichs, Tamar Nizharadze, Hans-Reimer Rodewald, Thomas Hoefer, Shosei Yoshida
    • Organizer
      Cold Spring Harbor Laboratory Meeting "Germ Cells"
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Clonal dynamics in the murine male germline from primordial germ cells to spermatogonial stem cells, and the next generation2022

    • Author(s)
      Tatsuro Ikeda, Maurice Langhinrichs, Tamar Nizharadze, Hans-Reimer Rodewald, Thomas Hoefer, Shosei Yoshida
    • Organizer
      the 55th Annual Meeting of the Japanese Society for Developmental Biologists
    • Related Report
      2022 Research-status Report
  • [Presentation] Clonal dynamics in the murine male germline from primordial germ cells to spermatogonial stem cells, and the next generation2022

    • Author(s)
      Tatsuro Ikeda, Maurice Langhinrichs, Tamar Nizharadze, Hans-Reimer Rodewald, Thomas Hoefer, Shosei Yoshida
    • Organizer
      第19回幹細胞シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 発生・幹細胞研究におけるDNAバーコード技術の可能性とは?2022

    • Author(s)
      池田達郎
    • Organizer
      幹細胞シンポジウム若手の会・つくしの会
    • Related Report
      2022 Research-status Report
  • [Remarks] 基礎生物学研究所 吉田研究室

    • URL

      http://www.nibb.ac.jp/germcell/index.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] 基礎生物学研究所 生殖細胞研究部門

    • URL

      http://www.nibb.ac.jp/germcell/index.html

    • Related Report
      2022 Research-status Report
  • [Remarks] 基礎生物学研究所 生殖細胞研究部門 吉田研究室

    • URL

      http://www.nibb.ac.jp/germcell/index.html

    • Related Report
      2021 Research-status Report

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

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