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Elucidation of the pathophysiology of OA fibrosis and establishment of therapeutic methods using innovative imaging technology and single-cell analysis

Research Project

Project/Area Number 21H03056
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionEhime University

Principal Investigator

Imamura Takeshi  愛媛大学, 医学系研究科, 教授 (70264421)

Co-Investigator(Kenkyū-buntansha) 川上 良介  愛媛大学, 医学系研究科, 准教授 (40508818)
齋藤 卓  愛媛大学, 医学系研究科, 講師 (60588705)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsイメージング技術 / 変形性関節症 / 線維化 / イメージング技術、 / 一細胞解析
Outline of Research at the Start

本研究は、変形性関節症(OA)における関節軟骨の線維軟骨形成(線維化)の病態を解明し、OAの新規診断法の開発や新規治療標的の同定に繋げる基盤研究プラットフォームを構築することを目的に、革新的イメージング技術と一細胞解析を用いた遺伝子発現プロファイルを駆使して、OA線維化に関わる多様な細胞の新たなサブタイプを同定し、その制御に関わる細胞間ネットワークを明らかにする。無標識コラーゲン可視化技術SHGによるOA組織形態パターンの数値化・定量化システムを実現し、人工知能AI による早期診断システムの構築に繋げる。その上で、線維化のマスターレギュレーターTGF-βシグナルを中心に線維化制御法を確立する。

Outline of Final Research Achievements

In order to develop new techniques to elucidate the pathogenesis of tissue fibrosis associated with chronic inflammation in osteoarthritis (OA) and to discover novel diagnostic and therapeutic methods, we developed a high-resolution two-photon excitation fluorescence microscope and a wide-field, high-speed two-photon excitation light sheet microscope, and analyzed the spatial expression of mouse ColI-positive fibroblasts, CAR cells, and THY1-positive fibroblasts. In addition, we developed an analysis system including polarization direction imaging as a system for quantification and quantification of tissue morphology patterns by SHG, and succeeded in quantifying them. Furthermore, machine learning was applied to discriminate mammary tumors. The ligamentectomy OA model were established, and CAR cells and THY1-positive fibroblasts in OA articular cartilage were examined, but expression was not confirmed.

Academic Significance and Societal Importance of the Research Achievements

変形性関節症(OA)は、関節軟骨の変性・変形によりQOLが大きく制限される疾患である。本邦における膝OAだけでも潜在的な患者数は約3000万人以上と推定されている。OAの原因は未だ不明でその根本的な治療法はない。本研究によって、OAの慢性炎症に伴う組織線維化の研究技術プラットフォームが開発されれば、新たな切り口でOAの原因に迫ることができ、その学術的意義は大きい。さらに、OAの慢性炎症に伴う線維化に関わる多様な細胞の新たなサブタイプが同定され、さらにその時空間制御に関わる細胞間ネットワークが明らかになれば、OAの新たな病態解明、さらに新規診断・治療法の開発に繋がり、その社会的意義も大きい。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (18 results)

All 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results)

  • [Int'l Joint Research] ウプサラ大学(スウェーデン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Academia Sinica (Taipei)(その他の国・地域)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Extended Depth of Focus Two-Photon Light-Sheet Microscopy for In Vivo Fluorescence Imaging of Large Multicellular Organisms at Cellular Resolution2023

    • Author(s)
      Saitou Takashi、Imamura Takeshi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 12 Pages: 10186-10186

    • DOI

      10.3390/ijms241210186

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tumor‐targeted fluorescence labeling systems for cancer diagnosis and treatment2022

    • Author(s)
      Tazawa H、Shigeyasu K、Noma K、Kagawa S、Sakurai F、Mizuguchi H、Kobayashi H、Imamura T、Fujiwara T
    • Journal Title

      Cancer Science

      Volume: - Issue: 6 Pages: 1919-1929

    • DOI

      10.1111/cas.15369

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Differences in interaction lead to the formation of different types of insulin amyloid2022

    • Author(s)
      Mori Wakako、Kawakami Ryosuke、Niko Yosuke、Haruta Tomohiro、Imamura Takeshi、Shiraki Kentaro、Zako Tamotsu
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 8556-8556

    • DOI

      10.1038/s41598-022-12212-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Computer-aided detection of quantitative signatures for breast fibroepithelial tumors using label-free multi-photon imaging2022

    • Author(s)
      Kobayashi-Taguchi Kana、Saitou Takashi、Kamei Yoshiaki、Murakami Akari、Nishiyama Kanako、Aoki Reina、Kusakabe Erina、Noda Haruna、Yamashita Michiko、Kitazawa Riko、Imamura Takeshi、Takada Yasutsugu
    • Journal Title

      Molecules

      Volume: 27 Issue: 10 Pages: 3340-3340

    • DOI

      10.3390/molecules27103340

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] NIR-II-Excitable Dye-Loaded Nanoemulsions for Two-Photon Microscopy Imaging of Capillary Blood Vessels in the Entire Hippocampal CA1 Region of Living Mice2022

    • Author(s)
      Matsuura Hitomi、Kawakami Ryosuke、Isoe Maki、Hoshihara Masaharu、Minami Yuya、Yatsuzuka Kazuki、Tsuda Teruko、Murakami Masamoto、Suzuki Yasutaka、Kawamata Jun、Imamura Takeshi、Hadano Shingo、Watanabe Shigeru、Niko Yosuke
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 14 Issue: 36 Pages: 40481-40490

    • DOI

      10.1021/acsami.2c03299

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis and photophysical properties of a new push-pull pyrene dye with green-to-far-red emission and its application to human cellular and skin tissue imaging2022

    • Author(s)
      Inoue Kazuki、Kawakami Ryosuke、Murakami Masamoto、Nakayama Taku、Yamamoto Shinkuro、Inoue Keiji、Tsuda Teruko、Sayama Koji、Imamura Takeshi、Kaneno Daisuke、Hadano Shingo、Watanabe Shigeru、Niko Yosuke
    • Journal Title

      Journal of Materials Chemistry B

      Volume: 10 Issue: 10 Pages: 1641-1649

    • DOI

      10.1039/d1tb02728j

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Wide field light-sheet microscopy with lens-axicon controlled two-photon Bessel beam illumination2021

    • Author(s)
      Takanezawa Sota、Saitou Takashi、Imamura Takeshi
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 2979-2979

    • DOI

      10.1038/s41467-021-23249-y

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Donor-acceptor-acceptor-type near-infrared fluorophores that contain dithienophosphole oxide and boryl groups: Effect of the boryl group on the nonradiative deca2021

    • Author(s)
      Yoshiaki Sugihara, Naoto Inai, Thomas Baumgartner, Ryosuke Kawakami, Takashi Saitou, Takeshi Imamura, Masayasu Taki, Takeshi Yanai, Shigehiro Yamaguchi
    • Journal Title

      Chemical Science

      Volume: - Issue: 18 Pages: 6333-6341

    • DOI

      10.1039/d1sc00827g

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] New fluorescent three-dimensional and deep-imaging technique confirms a direct relationship between the acrosyringium and vesicles/pustules of palmoplantar pustulosis2021

    • Author(s)
      Murakami Masamoto、Kawakami Ryosuke、Niko Yosuke、Tsuda Teruko、Yatsuzuka Kazuki、Mori Hideki、Imamura Takeshi、Sayama Koji
    • Journal Title

      Journal of Dermatological Science

      Volume: 0 Issue: 2 Pages: 000-000

    • DOI

      10.1016/j.jdermsci.2021.03.004

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Integrated Fluorescent Nanoprobe Design for High‐Speed In Vivo Two‐Photon Microscopic Imaging of Deep‐Brain Vasculature in Mice2021

    • Author(s)
      Takezaki Minami、Kawakami Ryosuke、Onishi Shozo、Suzuki Yasutaka、Kawamata Jun、Imamura Takeshi、Hadano Shingo、Watanabe Shigeru、Niko Yosuke
    • Journal Title

      Advanced Functional Materials

      Volume: 2021 Issue: 20 Pages: 2010698-2010698

    • DOI

      10.1002/adfm.202010698

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Application of advanced optical imaging to cancer research2023

    • Author(s)
      Imamura, T
    • Organizer
      TGF-β meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 愛媛発革新的バイオイメージング技術開発と応用2023

    • Author(s)
      今村健志
    • Organizer
      第64回日本生化学会 中国・四国支部例会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 生体蛍光イメージングの基礎と応用2023

    • Author(s)
      今村健志
    • Organizer
      日本香粧品学会 第48回教育セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 革新的バイオイメージングが拓く次世代がん微小転移研究と診断・治療応用2021

    • Author(s)
      今村健志
    • Organizer
      第30回日本がん転移学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 革新的生体光イメージング求術の医学・生物学応用2021

    • Author(s)
      今村健志
    • Organizer
      第62回日本組織細胞化学会総会・学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 蛍光イメージングの医学研究・医療応用とAIの導入2021

    • Author(s)
      今村健志
    • Organizer
      第73回西日本泌尿器科学会総会
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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