• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Relations between cell population dynamics in non-stationary environment and generation time fluctuation

Research Project

Project/Area Number 21K20672
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0703:Biology at organismal to population levels and anthropology, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Nooe Takashi  東京大学, 大学院総合文化研究科, 助教 (30910533)

Project Period (FY) 2021-08-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords1細胞計測 / 細胞系譜 / 表現型ゆらぎ / 個体群動態 / 変動環境 / 有限集団 / 集団動態 / 系譜解析
Outline of Research at the Start

近年進展する顕微鏡タイムラプスによる1細胞計測技術は細胞の成長動態を1細胞レベルで定量し、何世代にも渡る細胞時系列を実験で取得することは標準的な技術になりつつある。定常環境下での世代時間ゆらぎと集団の増殖の関係は理論的に確立しており実験的にも検証可能であるが、生物学的、生態学的に興味深い時間変動する環境下での両者の関係性について、実験検証可能なレベルでの理解は不十分である。そこで本研究では、実験検証可能な細胞系譜解析理論の構築とともに、新規に取得する実験データを用いた理論検証を行う。

Outline of Final Research Achievements

To construct a theoretical framework connecting single-cell-level growth dynamics and population dynamics, we have proceeded with a project to reveal the relationship between the single-cell-level fluctuation of generation time and population dynamics in fluctuating environments. We suggested theoretical frameworks to analyze the relationship between the heterogeneity of phenotypic traits, including generation time and population growth. We tested their validity by applying the methods to the simulated and experimental data. We also prepared experimental and theoretical fundamentals for measuring single-cell lineage trees in fluctuating environments.

Academic Significance and Societal Importance of the Research Achievements

マイクロ流体デバイスを用いた1細胞計測技術は大きく進展している一方で、1細胞レベルの状態変化と細胞集団の増殖過程を直接結びつける方向の観察や解析は発展途上である。今後の応用可能性を考えると、一般性の高い細胞系譜解析手法を確立する必要がある。本研究で提案された手法は、細胞の表現型の統計に影響する増殖・生存が与えるバイアスを適切に評価しようとするものであり、系譜データの持つ生物学的意義を明らかにするという基礎科学的重要性を持つことに加え、発生過程の細胞系譜や進化系統樹といった、分岐構造をもつ他の生物データを含む広範な系譜様データへ応用が期待される。

Report

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

    (14 results)

All 2024 2023 2022 Other

All Int'l Joint Research (6 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] ニューヨーク大学(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ESPCI Paris(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] マックスプランク研究所(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ニューヨーク大学(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ESPCI Paris(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] マックスプランク研究所(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Proteolytic stability and aggregation in a key metabolic enzyme of bacteria2024

    • Author(s)
      Pollack Dan、Nozoe Takashi、Kussell Edo
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 121 Issue: 19

    • DOI

      10.1073/pnas.2301458121

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cell Lineage Statistics with Incomplete Population Trees2023

    • Author(s)
      Genthon Arthur、Nozoe Takashi、Peliti Luca、Lacoste David
    • Journal Title

      PRX Life

      Volume: 1 Issue: 1 Pages: 013014-013014

    • DOI

      10.1103/prxlife.1.013014

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A unified framework for measuring selection on cellular lineages and traits2022

    • Author(s)
      Yamauchi Shunpei、Nozoe Takashi、Okura Reiko、Kussell Edo、Wakamoto Yuichi
    • Journal Title

      eLife

      Volume: 11

    • DOI

      10.7554/elife.72299

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 遺伝子発現の量比保存性に基づく細胞ラマンスペクトルの次元性の解析2024

    • Author(s)
      野添 嵩
    • Organizer
      定量生物学の会 第11回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 細胞集団内の選択の強さを測る細胞系譜解析手法2024

    • Author(s)
      野添 嵩
    • Organizer
      生物の基礎探究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] A unified framework linking cumulants of growth heterogeneity and population growth rates2023

    • Author(s)
      Takashi Nozoe, Shunpei Yamauchi, Reiko Okura, Edo Kussell, Yuichi Wakamoto
    • Organizer
      Statphys28
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Maximizing the potential of cellular Raman spectra as a proxy of the stoichiometry conservation structure of gene expression2023

    • Author(s)
      Takashi Nozoe, Ken-ichiro .F Kamei
    • Organizer
      第61回日本生物物理学会年会
    • Related Report
      2023 Annual Research Report
  • [Remarks] 【研究成果】細胞運命の不平等さを定量化する ―― 細胞系譜情報を利用した統計解析手法を構築 ――

    • URL

      https://www.c.u-tokyo.ac.jp/info/news/topics/20221206170000.html

    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-10-22   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi