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Development of a novel single-particle-level simulation technique bridging molecular and cellular structures

Research Project

Project/Area Number 17K18353
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Computational science
Life / Health / Medical informatics
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Kaizu Kazunari  国立研究開発法人理化学研究所, 生命機能科学研究センター, 上級研究員 (80616615)

Project Period (FY) 2017-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords反応拡散系 / システム生物学 / 細胞シミュレーション / 一分子計測 / シミュレーション / 生物物理 / 反応拡散 / 生化学反応 / 計算生物学 / 分子構造 / マルチスケール / コンピュータシミュレーション
Outline of Final Research Achievements

This study incorporated molecular structure into a single-particle-level simulation technique and linked molecular structure to biological phenomena at the cellular level. Departing from conventional approaches that treat molecules as symmetric spheres, we introduced implementations for molecular orientation and rotational diffusion. Additionally, our method enabled the modeling of cases where only specific regions of the molecular surface are reactive. We also introduced one- and two-dimensional representations to accurately depict realistic cell structures. Third, Simulations conducted under chromatin environments validate the impact of molecular crowding on gene expression regulation. Finally, we made this computational technique accessible as open-source software.

Academic Significance and Societal Importance of the Research Achievements

従来法(拡張グリーン関数動力学法)は厳密かつ高速に一分子粒度で反応拡散を計算できる手法であったが、分子は剛体球、空間は三次元に限定され現実的な分子や細胞内構造の再現が困難であった。本研究は、厳密性と高速化を維持しつつ、複雑な分子・細胞内構造を含めた計算を実現した。これにより、より現実に近い細胞のモデル化が可能になった。また、本技法の厳密性により、シミュレーションを用いた新規理論の検証・提案を可能にした。さらに、本技法と一分子計測技術を組み合わせることで、これまで局所的な分子機能への影響に限られていた分子構造変化を細胞動態への影響にまで結び付ける新たな計算生物学の基盤技術を公開した。

Report

(8 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2021 2020 2019 2018 2017 Other

All Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Remarks (5 results)

  • [Journal Article] An architecture for collaboration in systems biology at the age of the Metaverse2024

    • Author(s)
      Jacopin Eliott、Sakamoto Yuki、Nishida Kozo、Kaizu Kazunari、Takahashi Koichi
    • Journal Title

      npj Systems Biology and Applications

      Volume: 10 Issue: 1 Pages: 12-12

    • DOI

      10.1038/s41540-024-00334-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Technologies for whole‐cell modeling: Genome‐wide reconstruction of a cell in silico2023

    • Author(s)
      Kaizu Kazunari、Takahashi Koichi
    • Journal Title

      Development, Growth & Differentiation

      Volume: 65 Issue: 9 Pages: 554-564

    • DOI

      10.1111/dgd.12897

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cooperativity transitions driven by higher-order oligomer formations in ligand-induced receptor dimerization2019

    • Author(s)
      Watabe Masaki、Arjunan Satya N. V.、Chew Wei Xiang、Kaizu Kazunari、Takahashi Koichi
    • Journal Title

      Physical Review E

      Volume: 100 Issue: 6 Pages: 062407-062407

    • DOI

      10.1103/physreve.100.062407

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Simulation of live-cell imaging system reveals hidden uncertainties in cooperative binding measurements2019

    • Author(s)
      Watabe Masaki、Arjunan Satya N. V.、Chew Wei Xiang、Kaizu Kazunari、Takahashi Koichi
    • Journal Title

      Physical Review E

      Volume: 100 Issue: 1 Pages: 010402-010402

    • DOI

      10.1103/physreve.100.010402

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Surface reaction-diffusion kinetics on lattice at the microscopic scale2019

    • Author(s)
      Chew Wei-Xiang、Kaizu Kazunari、Watabe Masaki、Muniandy Sithi V.、Takahashi Koichi、Arjunan Satya N. V.
    • Journal Title

      Physical Review E

      Volume: 99 Issue: 4 Pages: 042411-042411

    • DOI

      10.1103/physreve.99.042411

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] eGFRD in all dimensions2019

    • Author(s)
      Sokolowski Thomas R.、Paijmans Joris、Bossen Laurens、Miedema Thomas、Wehrens Martijn、Becker Nils B.、Kaizu Kazunari、Takahashi Koichi、Dogterom Marileen、ten Wolde Pieter Rein
    • Journal Title

      The Journal of Chemical Physics

      Volume: 150 Issue: 5 Pages: 054108-054108

    • DOI

      10.1063/1.5064867

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reaction-diffusion kinetics on lattice at the microscopic scale2018

    • Author(s)
      Chew Wei-Xiang、Kaizu Kazunari、Watabe Masaki、Muniandy Sithi V.、Takahashi Koichi、Arjunan Satya N. V.
    • Journal Title

      Physical Review E

      Volume: 98 Issue: 3 Pages: 032418-032418

    • DOI

      10.1103/physreve.98.032418

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transient Acceleration of Epidermal Growth Factor Receptor Dynamics Produces Higher-Order Signaling Clusters2018

    • Author(s)
      Hiroshima Michio、Pack Chan-gi、Kaizu Kazunari、Takahashi Koichi、Ueda Masahiro、Sako Yasushi
    • Journal Title

      Journal of Molecular Biology

      Volume: 430 Issue: 9 Pages: 1386-1401

    • DOI

      10.1016/j.jmb.2018.02.018

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Whole-cell Modeling of a Bacterial Cell from Genomic Sequence2021

    • Author(s)
      Kazunari Kaizu
    • Organizer
      第4回ExCELLSシンポジウム
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 細胞モデリングを自動化する2020

    • Author(s)
      海津一成
    • Organizer
      情報計算化学生物学会2020年大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] E-Cell System version 4: An integrated platform for cell simulations2019

    • Author(s)
      Kozo Nishida, Kazunari Kaizu, Masaki Watabe, Koichi Takahashi
    • Organizer
      International Conference on Systems Biology 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 全細胞シミュレーションとは何か2018

    • Author(s)
      海津一成
    • Organizer
      第40 回日本生物学的精神医学会・第61 回日本神経化学会大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] E-Cell System: from a single molecule to a whole cell2017

    • Author(s)
      海津一成
    • Organizer
      日本生物物理学会第55回年会
    • Related Report
      2017 Research-status Report
  • [Remarks] 統合細胞シミュレーションソフトウェア基盤E-Cellシステムバージョン4

    • URL

      https://ecell4.e-cell.org/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report 2021 Research-status Report 2020 Research-status Report 2019 Research-status Report
  • [Remarks] バイオイメージングシミュレーターScopyon

    • URL

      https://github.com/ecell/scopyon/

    • Related Report
      2019 Research-status Report
  • [Remarks] 細胞シミュレーション基盤ソフトウェアE-Cellシステム

    • URL

      https://github.com/ecell/ecell4

    • Related Report
      2018 Research-status Report
  • [Remarks] eGFRD法、Spatiocyteを含む各種計算手法の実装を含むライブラリ

    • URL

      https://github.com/ecell/ecell4-base

    • Related Report
      2018 Research-status Report
  • [Remarks] 各種グリーン関数動力学法の実装を含むライブラリ

    • URL

      https://github.com/ecell/greens_functions

    • Related Report
      2018 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2025-01-30  

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