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Induction of DNA dispersion by mechanical stimulation of the nucleus and its possible application to cell function control

Research Project

Project/Area Number 21K19902
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 90:Biomedical engineering and related fields
Research InstitutionNagoya University

Principal Investigator

Matsumoto Takeo  名古屋大学, 工学研究科, 教授 (30209639)

Co-Investigator(Kenkyū-buntansha) 前田 英次郎  名古屋大学, 工学研究科, 准教授 (20581614)
Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsメカノバイオロジー / 細胞核 / クロマチン / DNA / 力学刺激 / バイオメカニクス / メ力ノバイオロジー
Outline of Research at the Start

細胞機能が核内DNAの物理的な分布の違いに影響されることが認識され始めている.例えば血管組織内の平滑筋細胞ではDNAが核膜付近に局在しているのに対し,数週間培養し増殖が盛んになる(脱分化)とDNAが核内に満遍なく拡がってくる.脱分化細胞ではDNAの2重ラセンが緩みやすく,よってmRNAの合成が生じやすく,結果として蛋白合成や増殖が活発になると推定される.ところで我々はDNA分布が核の変形で容易に変化することを見出した.そこで本研究では,細胞核を定量的に変形させた後のDNA分布の変化を顕微鏡下で詳細に調べる装置を開発し,核変形によるDNA分散と細胞機能の変化との関係を調べることを目的とする.

Outline of Final Research Achievements

Osteoblast-like cells MC3T3-E1 were passed through a microchannel having a narrow portion of 10 um in width and 100 um in length to compress the cell nuclei. The number of intranuclear DNA aggregates decreased after passage through the channel, but the total volume did not change, suggesting the possibility that the aggregates fused together. In addition, the cell proliferation rate decreased after passage through the channel. When dynamic compression with an amplitude of 1 um and a frequency of 800 Hz was applied to the S-phase nuclei for 5 min, the number of aggregates decreased and the projected area did not change significantly. In the non-S phase, the number of aggregates and the projected area increased significantly. The DNA become loosened due to replication in the S phase. This may disassemble the aggregates easily. In addition, the loosened DNA may push the nuclear membrane from the inside and it may make the nucleus less likely to collapse.

Academic Significance and Societal Importance of the Research Achievements

細胞核を圧縮することでクロマチン凝集体の個数や総体積が変化することは判っていたが,細胞周期の影響があることが確認できた点,また,その影響がS期と非S期のクロマチンの凝集状態の違いから説明できそうであることが判った点が第1の成果である.またこれまでは凝集体の個数や体積の変化の理解に留まっていたが,マイクロ流路を通すことにより,増殖能にも変化が現れることが判った点が第2の成果と言える.

Report

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

    (18 results)

All 2023 2022 2021 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (2 results) Remarks (1 results)

  • [Journal Article] Changes in the intra- and extra-mechanical environment of the nucleus in Saos-2 osteoblastic cells during bone differentiation process: Nuclear shrinkage and stiffening in cell differentiation2023

    • Author(s)
      Nagayama Kazuaki、Kodama Fumiki、Wataya Naoki、Sato Akiko、Matsumoto Takeo
    • Journal Title

      Journal of the Mechanical Behavior of Biomedical Materials

      Volume: 138 Pages: 105630-105630

    • DOI

      10.1016/j.jmbbm.2022.105630

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Through the cleared aorta: three-dimensional characterization of mechanical behaviors of rat thoracic aorta under intraluminal pressurization using optical clearing method2022

    • Author(s)
      Maeda Eijiro、Ando Yoriko、Takeshita Kazuhiro、Matsumoto Takeo
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 8632-8632

    • DOI

      10.1038/s41598-022-12429-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dependency of deformation of cell nucleus on stretch direction of tissue: Relation to anisotropic response of aortic media to hypertension2022

    • Author(s)
      Fan Yong、Wang Junfeng、Kim Jeonghyun、Maeda Eijiro、Matsumoto Takeo
    • Journal Title

      Journal of the Mechanical Behavior of Biomedical Materials

      Volume: 133 Pages: 105326-105326

    • DOI

      10.1016/j.jmbbm.2022.105326

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stiffness estimation of transversely anisotropic materials using a novel indentation tester with a rectangular hole2022

    • Author(s)
      Tamura Atsutaka、Saiki Mika、Hongu Jun-ichi、Matsumoto Takeo
    • Journal Title

      Computer Methods in Biomechanics and Biomedical Engineering

      Volume: 26 Issue: 8 Pages: 893-904

    • DOI

      10.1080/10255842.2022.2098015

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Through the cleared aorta: three-dimensional characterization of mechanical behaviors of rat thoracic aorta under intraluminal pressurization using optical clearing method2022

    • Author(s)
      Maeda E, Ando Y, Takeshita K, Matsumoto T
    • Journal Title

      Scientific Reports

      Volume: In press

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Microscopic characterisation of local strain field in healing tissue in the central third defect of mouse patellar tendon at early-phase of healing2021

    • Author(s)
      Maeda Eijiro、Kuroyanagi Kaname、Matsumoto Takeo
    • Journal Title

      Journal of the Mechanical Behavior of Biomedical Materials

      Volume: 123 Pages: 104702-104702

    • DOI

      10.1016/j.jmbbm.2021.104702

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 細胞剥離方法がマイクロ流路を用いたMC3T3-E1細胞核への圧縮効果に与える影響に関する研究2023

    • Author(s)
      亀井竣平,王軍鋒,キム・ジョンヒョン,前田英次郎,松本健郎
    • Organizer
      日本機械学会東海支部第54回学生会卒業研究発表講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 繰返引張下の重層化したMC3T3-E1細胞の上下層で異なる配向の原因解明に関する研究2023

    • Author(s)
      鈴木秀一朗,王軍鋒,キム・ジョンヒョン,前田英次郎,松本健郎
    • Organizer
      日本機械学会東海支部第54回学生会卒業研究発表講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Microscopic Estimation of Mechanical Environment in Soft Biological Tissues to Elucidate Biological Response Driven by Force and Deformation2022

    • Author(s)
      Matsumoto T
    • Organizer
      The 9th World Congress of Biomechanics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 3D Image Analysis for Nuclear Morphology in Osteocytic Spheroids with Optical Clearing Technique2022

    • Author(s)
      Inagaki T, Kim J, Maeda E, Matsumoto T
    • Organizer
      第61回日本生体医工学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] FRET型張力センサ発現マウスの血管と腱の引張に伴うFRET変化2022

    • Author(s)
      王軍鋒, 辻村有紀, 北口哲也, 前田英次郎, 横田秀夫, 松本健郎
    • Organizer
      日本機械学会第34回バイオエンジニアリング講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] マイクロ流路を用いた細胞核への力学刺激とその応答に関する基礎研究2022

    • Author(s)
      東海詠思,王軍鋒,キム・ジョンヒョン,前田英次郎,松本健郎
    • Organizer
      日本機械学会第32回バイオフロンティア講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 動的圧縮刺激が核内DNA凝集状態に与える影響に関する研究2022

    • Author(s)
      城響一,王軍鋒,キム・ジョンヒョン,前田英次郎,松本健郎
    • Organizer
      日本機械学会第32回バイオフロンティア講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 無負荷培養に伴う家兎胸大動脈壁内平滑筋細胞核とアクチンの形態変化の観察2021

    • Author(s)
      王軍鋒,前田英次郎,松本健郎
    • Organizer
      日本機械学会第33回バイオエンジニアリング講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Microscopic deformation of the nucleus is different from that of adjacent actin filaments in the smooth muscle cells in the aortic media and is dependent on the stretch direction2021

    • Author(s)
      Fan Y, Wang JF, Kim J, Maeda E, Matsumoto T
    • Organizer
      The 11th Asian-Pacific Conference on Biomechanics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Book] 最先端ナノライフシステム研究(最先端ナノライフシステム研究編集委員会編)2022

    • Author(s)
      キム・ジョンヒョン,前田英次郎,松本健郎
    • Total Pages
      221
    • Publisher
      丸善プラネット
    • Related Report
      2022 Annual Research Report
  • [Book] 最先端ナノライフシステム研究2022

    • Author(s)
      キム・ジョンヒョン,前田英次郎,松本健郎
    • Total Pages
      221
    • Publisher
      丸善プラネット
    • Related Report
      2021 Research-status Report
  • [Remarks] バイオメカニクス研究室

    • URL

      http://bio.mech.nagoya-u.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2024-01-30  

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