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Cell function control utilizing intranuclear dispersion of DNA induced with mechanical stimulation

Research Project

Project/Area Number 19K22960
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) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsバイオメカニクス / メカノバイオロジー / 細胞核 / クロマチン / DNA / 力学刺激
Outline of Research at the Start

遺伝子発現が細胞核内の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.例えば血管平滑筋細胞は組織内ではDNAが核膜付近に集中しているのに対し,数週間培養し増殖が盛んになるとDNAが核内に満遍なく拡がってくる.DNAが核内で満遍なく拡がることにより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,更には増殖が活発になると推定される.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.

Outline of Final Research Achievements

This study was conducted to control cell function utilizing intranuclear dispersion of DNA induced with mechanical deformation of the nucleus. We fabricated a PDMS substrate having a narrow groove with a depth of 35 μm and a width of about 10 μm, and stretched it to widen the groove to make cultured osteoblastic cells (MC3T3-E1) into the groove. The substrate was then released to compress cell nuclei along with the cytoplasm by 15-20%. No change was observed in the number or volume of DNA aggregates in one compression, but the total volume of the aggregates decreased when they are compressed five times. The number of the aggregates increased or decreased depending on the sample. The total volume of aggregates may decrease when the nuclei receive enough amount of compression stimulus. With regard to their number, the change was not simple for it may increase when the aggregates split and may decrease when the split volume become below the measurement limit.

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総体積が減少することは判っていたが,17%の1回の圧縮では変化しないが,それより小さい15%であっても5回の圧縮で減少する,即ち,圧縮量だけでなく,回数も重要であることが判った点が第1の成果である.また従来,凝集体の個数も減少するものと思われてきたが,場合によって増える場合もあることが分かり,圧縮により大きな凝集塊が複数の小さな凝集塊に分裂する可能性,小さな凝集塊が分裂して計測限界以下の大きさになる可能性な考えられることが判った点が第2の成果と言える.

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (18 results)

All 2020 2019 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Three-Dimensional Finite Analysis of the Optimal Alignment of the Tibial Implant in Unicompartmental Knee Arthroplasty2020

    • Author(s)
      Sasatani Katsumi、Majima Tokifumi、Murase Kohei、Takeuchi Naoki、Matsumoto Takeo、Oshima Yasushi、Takai Shinro
    • Journal Title

      Journal of Nippon Medical School

      Volume: 87 Issue: 2 Pages: 60-65

    • DOI

      10.1272/jnms.JNMS.2020_87-202

    • NAID

      130007843313

    • ISSN
      1345-4676, 1347-3409
    • Year and Date
      2020-04-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 細胞核への力学刺激と核内クロマチン分布2020

    • Author(s)
      松本健郎
    • Journal Title

      医学のあゆみ『ラミノパチーとはなにか』

      Volume: 272 Pages: 147-151

    • Related Report
      2019 Research-status Report
  • [Journal Article] A novel FRET analysis method for tension dynamics in a single actin stress fiber: Application to MC3T3-E1 cells during movement on a substrate2019

    • Author(s)
      Wang Junfeng、Sugita Shukei、Michiue Tatsuo、Tsuboi Takashi、Kitaguchi Tetsuya、Matsumoto Takeo
    • Journal Title

      Journal of Biorheology

      Volume: 33 Issue: 1 Pages: 21-26

    • DOI

      10.17106/jbr.33.21

    • NAID

      130007674886

    • ISSN
      1867-0466, 1867-0474
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shape-dependent regulation of differentiation lineages of bone marrow-derived cells under cyclic stretch2019

    • Author(s)
      Maeda Eijiro、Atsumi Yoshinori、Ishiguro Mai、Nagayama Kazuaki、Matsumoto Takeo
    • Journal Title

      Journal of Biomechanics

      Volume: 96 Pages: 109371-109371

    • DOI

      10.1016/j.jbiomech.2019.109371

    • NAID

      120006808764

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of Substrate Stiffness on Morphology and MMP‐1 Gene Expression in Tenocytes Stimulated With Interleukin‐1β2019

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

      Journal of Orthopaedic Research

      Volume: 38 Issue: 1 Pages: 150-159

    • DOI

      10.1002/jor.24403

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 血管壁の3次元微細構造を明らかにする画像化技術2020

    • Author(s)
      松本健郎,横田秀夫,杉田修啓,安東頼子
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 培養家兎胸大動脈の中膜平滑筋細胞の核とアクチン形態に対する繰返引張負荷の影響2020

    • Author(s)
      王軍鋒,前田英次郎,松本健郎
    • Organizer
      日本機械学会2020年度年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 重層化したMC3T3-E1細胞への繰返引張により誘導されるアクチンフィラメント配向2020

    • Author(s)
      今城健,前田英次郎,松本健郎
    • Organizer
      日本機械学会第31回バイオフロンティア講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] FRET型張力センサを用いた単一ストレスファイバ内の微視的変形計測:変形の不均一性およびFRET ratio 変化と実際のひずみとの相関の検討2020

    • Author(s)
      小出恭平,王軍鋒,前田英次郎,松本健郎
    • Organizer
      日本機械学会第31回バイオフロンティア講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 生体軟組織へのFRETセンサ導入法の開発:組織内微視的ひずみ分布の計測を目指して2020

    • Author(s)
      沼野翔太,王軍鋒,前田英次郎,松本健郎
    • Organizer
      日本機械学会第31回バイオフロンティア講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Dependency of Nuclear Deformation of Smooth Muscle Cells on Tissue Stretch Direction May Explain Anisotropic Response of Aortic Wall to Hypertension2019

    • Author(s)
      Matsumoto T, Hirooka C, Fan Y, Wang J, Mori N, Maeda E
    • Organizer
      International Conference on Biomechanics and Medical Engineering Yuan-Cheng Fung 100th Birthday Celebration
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Lamellar Unit and Biomechanics of Aortic Wall2019

    • Author(s)
      Matsumoto T
    • Organizer
      The 10th Asian-Pacific Conference on Biomechanics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 動脈壁の力学応答解明を目指したマルチスケール・バイオメカニクス2019

    • Author(s)
      松本健郎
    • Organizer
      日本機械学会中四国支部・特別講演会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 無負荷培養に伴う家兎胸大動脈壁内平滑筋細胞核の形態変化の観察2019

    • Author(s)
      王軍鋒,前田英次郎,松本健郎
    • Organizer
      日本機械学会第30回バイオフロンティア講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 刺激量・時間を変更可能な大規模細胞圧縮装置の試作2019

    • Author(s)
      森尚輝,王軍鋒,前田英次郎,松本健郎
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Three-dimensional deformation and rotation of aortic smooth muscle nuclei in response to tissue stretch is dependent on the stretch direction2019

    • Author(s)
      Fan Y, Wang J, Maeda E, Matsumoto T
    • Organizer
      The 10th Asian-Pacific Conference on Biomechanics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウス胸大動脈平滑筋細胞核の変形異方性(高血圧に対する力学応答の異方性との関連)2019

    • Author(s)
      増田脩真,廣岡千鶴,前田英次郎,松本健郎
    • Organizer
      日本機械学会第32回バイオエンジニアリング講演会
    • Related Report
      2019 Research-status Report
  • [Remarks] 名古屋大学・バイオメカニクス研究室

    • URL

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

    • Related Report
      2020 Annual Research Report 2019 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2022-01-27  

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