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How accurately can we predict the expression status of a gene using stochastic noise in expression?

Research Project

Project/Area Number 18H02427
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 43060:System genome science-related
Research InstitutionThe University of Tokyo

Principal Investigator

Tsuru Saburo  東京大学, 大学院理学系研究科(理学部), 特任助教 (80594506)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywords遺伝子発現 / ゆらぎ / 大腸菌 / 環境応答
Outline of Final Research Achievements

How accurately can we predict the expression status of a gene using which indicator? Previous studies have suggested a positive correlation between the extent of expression change in response to environmental fluctuations (plasticity) and the magnitude of stochastic expression fluctuations (noise). This study aims to experimentally verify this noise-plasticity coupling. To accomplish this, we cultured an E. coli library labeled with fluorescent markers for each gene's expression levels under various environmental conditions and measured the expression levels at the single cell level using flow cytometry. The results confirmed a positive correlation between plasticity and noise in gene expression level. This finding suggests that noise in gene expression can serve as an indicator for predicting the environmental response of gene expression levels.

Academic Significance and Societal Importance of the Research Achievements

本研究では、大腸菌を用いて、遺伝子発現量のゆらぎと環境変化が正に相関することが示された。この実証実験の成果は、理論的背景の正当性を支持するものであり、遺伝子発現量の変化しやすさの異なる指標が連動していることを示している。このことは、遺伝子発現量のゆらぎを事前に計測することで、環境変化前後の発現変化量をある程度予測できることを示唆している。これらの成果は、細菌の発現量の予測や設計を図る応用分野に大きな示唆を与えると期待される。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (11 results)

All 2023 2022 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (8 results)

  • [Journal Article] Inference of transcriptome signatures of Escherichia coli in long-term stationary phase2023

    • Author(s)
      Takano Sotaro、Takahashi Hiromi、Yama Yoshie、Miyazaki Ryo、Furusawa Chikara、Tsuru Saburo
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 1-13

    • DOI

      10.1038/s41598-023-32525-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Purifying selection enduringly acts on the sequence evolution of highly expressed proteins in <i>Escherichia coli</i>2022

    • Author(s)
      Shibai Atsushi、Kotani Hazuki、Sakata Natsue、Furusawa Chikara、Tsuru Saburo
    • Journal Title

      G3 Genes|Genomes|Genetics

      Volume: 12 Issue: 11 Pages: 1-11

    • DOI

      10.1093/g3journal/jkac235

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental demonstration of operon formation catalyzed by insertion sequence2022

    • Author(s)
      Kanai Yuki、Tsuru Saburo、Furusawa Chikara
    • Journal Title

      Nucleic Acids Research

      Volume: 50 Issue: 3 Pages: 1673-1686

    • DOI

      10.1093/nar/gkac004

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 挿入配列活性によるオペロン構造形成の実証実験2023

    • Author(s)
      金井雄樹, 津留三良, 古澤力
    • Organizer
      第17回日本ゲノム微生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 挿入配列活性によるオペロン構造形成の大腸菌を用いた実証実験2022

    • Author(s)
      金井雄樹, 津留三良, 古澤力
    • Organizer
      日本遺伝学会第94回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] オペロン構造が組み上がる過程を実験的に再構成する2022

    • Author(s)
      金井雄樹, 津留三良, 古澤力
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] オペロン構造を基本とする遺伝子発現制御機構の起源に関するIDE 仮説の実証実験2022

    • Author(s)
      金井雄樹, 津留三良, 古澤力
    • Organizer
      第46回生命の起原および進化学会学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 大腸菌を用いた実験室内進化におけるタンパク質の配列進化速度の制約2019

    • Author(s)
      Saburo Tsuru, Atsushi Shibai, Chikara Furusawa
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] A ubiquitous law in the rate of divergentevolution of protein sequence2019

    • Author(s)
      Saburo Tsuru, Atsushi Shibai, Chikara Furusawa
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] トランスポゾーム発現大腸菌によるゲノム縮小の進化実験2019

    • Author(s)
      金井雄樹, 津留三良, 古澤力
    • Organizer
      定量生物学の会第九年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 高変異率条件における細菌の長期実験進化2018

    • Author(s)
      芝井厚, 堀之内貴明, 古澤力, 津留三良
    • Organizer
      日本進化学会第 20 回大会
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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