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Visualization of facilitated diffusion of transcription-factor by utilizing novel high-speed super-resolution microscopy

Research Project

Project/Area Number 19K15406
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28040:Nanobioscience-related
Research InstitutionCenter for Novel Science Initatives, National Institutes of Natural Sciences

Principal Investigator

Tsutsumi Motosuke  大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, 生命創成探究センター, 特任助教 (60782422)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords深部超解像イメージング / 高速超解像イメージング / 生体イメージング / 先端蛍光顕微鏡 / 蛍光顕微鏡 / 超解像顕微鏡 / 生体超解像イメージング / イメージング / 転写因子 / 促進拡散 / スフェロイド / 2光子顕微鏡
Outline of Research at the Start

転写因子はDNAと結合することで生体機能の発現を制御するタンパク質である。近年、DNA鎖近傍で生じる転写因子の探索挙動「促進拡散」の存在が明らかになり、膨大なDNA情報の中から目的の遺伝子配列を見つけ出すために重要であることが示唆されている。しかし、促進拡散を観察するには、数十ミリ秒の時間と数十ナノメートルの空間を見分ける能力(分解能)を兼ね備えた観察手法が必要であり、生体における促進拡散の意義は未だ十分には明らかになっていない。本研究では、新たな超解像顕微鏡法を導入することで、上記の分解能での観察を生きた細胞で実現し、転写因子の促進拡散挙動の変化を詳細に比べることで、その意義を検討する。

Outline of Final Research Achievements

Aiming to visualize intracellular molecular behavior in living cells occurring in nano-scale area at several ten milli-seconds, I established a super-resolution observation method that enables high-speed and deep observation. By utilizing SRRF, a novel super-resolution method based on image analysis, and applying it to our research group's advanced two-photon excitation fluorescence microscope, I demonstrated super-resolution observation with several ten milli-seconds temporal resolution at millimeter-order depths in living organisms and tissues. In addition, in this study, I established a remote super-resolution observation system with a collaborator. These results were presented at several conferences and international meetings, and awarded a conference presentation award. In addition, three co-authored papers were published in academic journals as the results of joint research utilizing the findings obtained in this study.

Academic Significance and Societal Importance of the Research Achievements

本研究で確立された高速・深部超解像観察法は、転写因子の高速DNA認識動態の観察のみならず、脳をはじめとする生体組織、臓器、3次元培養細胞など、既存超解像顕微鏡法では観察困難な対象における微細分子挙動や形態観察に適用でき、生命科学研究の発展に貢献する。また、本研究に関連して得られた細胞スフェロイド培養法やその2光子観察法の知見は薬剤活性の評価モデルとして有用であり、国際共同研究を含む複数の研究に応用されている。さらに、本研究で実証したリモート顕微鏡観察の系は、感染症蔓延下の対応だけではなく、遠隔地に住む研究者が先端顕微鏡観察の機会を得られる点から、海外顕微鏡共用施設の運営者からも注目されている。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (22 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 3 results,  Invited: 5 results)

  • [Int'l Joint Research] KU Leuven(ベルギー)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Katholieke Universiteit Leuven(ベルギー)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Columbia University(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] FBP17-mediated finger-like membrane protrusions in cell competition between normal and RasV12-transformed cells2021

    • Author(s)
      Kamasaki Tomoko、Miyazaki Yumi、Ishikawa Susumu、Hoshiba Kazuya、Kuromiya Keisuke、Tanimura Nobuyuki、Mori Yusuke、Tsutsumi Motosuke、Nemoto Tomomi、Uehara Ryota、Suetsugu Shiro、Itoh Toshiki、Fujita Yasuyuki
    • Journal Title

      iScience

      Volume: 24 Issue: 9 Pages: 102994-102994

    • DOI

      10.1016/j.isci.2021.102994

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3DeeCellTracker, a deep learning-based pipeline for segmenting and tracking cells in 3D time lapse images2021

    • Author(s)
      Wen Chentao、Miura Takuya、Voleti Venkatakaushik、Yamaguchi Kazushi、Tsutsumi Motosuke、Yamamoto Kei、Otomo Kohei、Fujie Yukako、Teramoto Takayuki、Ishihara Takeshi、Aoki Kazuhiro、Nemoto Tomomi、Hillman Elizabeth MC、Kimura Koutarou D
    • Journal Title

      eLife

      Volume: 10

    • DOI

      10.7554/elife.59187

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Adaptive Optical Two-Photon Microscopy for Surface-Profiled Living Biological Specimens2020

    • Author(s)
      Yamaguchi Kazushi、Otomo Kohei、Kozawa Yuichi、Tsutsumi Motosuke、Inose Tomoko、Hirai Kenji、Sato Shunichi、Nemoto Tomomi、Uji-i Hiroshi
    • Journal Title

      ACS Omega

      Volume: 6 Issue: 1 Pages: 438-447

    • DOI

      10.1021/acsomega.0c04888

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Image analysis based super-resolution two-photon microscopy for in vivo imaging2022

    • Author(s)
      Tsutsumi M
    • Organizer
      第4回 ExCELLS若手交流リトリート
    • Related Report
      2021 Annual Research Report
  • [Presentation] Image analysis based super-resolution two-photon microscopy for in vivo imaging2022

    • Author(s)
      Tsutsumi M, Nemoto T
    • Organizer
      第11回 生理研-霊長研-新潟脳研 合同シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光学顕微鏡の観察の新展開 -光学分解能を超える観察とリモート観察 -2022

    • Author(s)
      堤 元佐
    • Organizer
      北海道大学 技術支援・設備共用コアステーション オンライン会議
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 画像解析による超解像法SRRFのin vivoイメージングへの適用2021

    • Author(s)
      堤 元佐、髙橋泰伽、小林健太郎、根本知己
    • Organizer
      第30回 日本バイオイメージング学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Remote support of optical microscope observation beyond 1000 km distance2021

    • Author(s)
      Tsutsumi M, Kobayashi K, Nemoto T
    • Organizer
      Global Bio Imaging -Exchange of Experience VI- online meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 蛍光イメージングの最新動向:より速く、より深く、より細かく、そしてより優しく2021

    • Author(s)
      堤 元佐
    • Organizer
      琉球大学 理学部海洋自然科学科生物系 公開講演会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 空間光位相変調器を用いた収差補正による生体組織深部の微細構造の可視化2021

    • Author(s)
      山口和志、大友康平、小澤祐市、堤 元佐、猪瀬朋子、平井健二、佐藤俊一、根本知己、雲林院 宏
    • Organizer
      日本化学会 第101春季年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Two-photon 3D live imaging of cellular ERK activation in multicellular tumor spheroid adhering gold nanostar for plasmonic photothermal effects2021

    • Author(s)
      Kazushi Yamaguchi, Kohei Otomo, Yuichi Kozawa, Motosuke Tsutsumi, Tomoko Inose, Kenzi Hirai, Syunichi Sato, Tomomi Nemoto, Hiroshi Uji-i
    • Organizer
      The 3rd Australia-Belgium-Japan joint symposium on excitonics and cellular communication
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] TP-SRRF, Image analysis based super-resolution two-photon microscopy for deep imaging2021

    • Author(s)
      Motosuke Tsutsumi
    • Organizer
      第3回 ExCELLS若手交流リトリート
    • Related Report
      2020 Research-status Report
  • [Presentation] SRRF-時空間蛍光相関超解像法 ~画像解析による新規超解像顕微鏡~2020

    • Author(s)
      堤 元佐
    • Organizer
      オックスフォード・インストゥルメンツ社 Andor ウェビナー 第2回
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 多点走査型2光子顕微鏡によるAβオリゴマー曝露時のアストロサイトCa2+動態の可視化解析2020

    • Author(s)
      中田開人、鎌田恭史、大友康平、石井宏和、堤 元佐、榎木亮介、根本知己
    • Organizer
      第29回 日本バイオイメージング学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Image analysis based super-resolution two-photon microscopy TP-SRRF for deep imaging2020

    • Author(s)
      Motosuke Tsutsumi, Tomomi Nemoto
    • Organizer
      第3回 ExCELLSシンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Application of novel image analysis method SRRF for deep and fast super resolution imaging2020

    • Author(s)
      堤 元佐、根本知己
    • Organizer
      ExCELLS若手リトリート
    • Related Report
      2019 Research-status Report
  • [Presentation] Application of novel image analysis method SRRF for deep and fast super resolution imaging2020

    • Author(s)
      Tsutsumi M., Nemoto T
    • Organizer
      ABiS International Symposium 2020
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 深部高速超解像イメージングのための新規画像解析法SRRFの適用検討2019

    • Author(s)
      堤 元佐、根本知己
    • Organizer
      第2回ExCELLSシンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] Application of novel image analysis method SRRF for deep and fast super resolution imaging2019

    • Author(s)
      堤 元佐、根本知己
    • Organizer
      大学共同利用機関法人若手コロキウム
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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