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Elucidation of the molecular mechanism under biological response of optic disc astrocytes to mechanical stress

Research Project

Project/Area Number 21K09741
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionOsaka University

Principal Investigator

Kenji Matsushita  大阪大学, 大学院医学系研究科, 准教授 (40437405)

Co-Investigator(Kenkyū-buntansha) 臼井 審一  大阪大学, 大学院医学系研究科, 講師 (20546882)
Project Period (FY) 2021-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsアストロサイト / 緑内障 / 高眼圧 / S100B / Preconditioning / 多光子顕微鏡 / 機械的ストレス / 眼内圧上昇 / リモデリング / 網膜および視神経乳頭(ONH)アストロサイト / メカニカルストレス / 一過性眼圧上昇 / GFAP / アクチン / 神経保護 / ミューラ細胞 / 視神経
Outline of Research at the Start

緑内障は篩板の視神経軸索への直接的メカニカルストレスが原因とされてきた。近年、このストレス応答に活性化アストロサイトの初期反応が重要であるという報告が出てきているが、メカニカルストレスをアストロサイトが受容し病態を引き起こす分子機構は現在不明である。今回、我々は乳頭アストロサイトのメカニカルストレスに対する応答を検討する系を開発した。緑内障発症極初期に活性化と異なるアストロサイト応答が出現し、この遷移状態(Preconditioning state)を多光子顕微鏡を用いてin vivo イメージングを行う。これは根治療法のない緑内障に対して、発症抑制という新規治療法の開発基盤となる。

Outline of Final Research Achievements

This study aimed to elucidate the mechanotransduction response in glaucoma by analyzing the molecular mechanisms of optic nerve head astrocytes and developing retinal live imaging techniques. Using an electroporator, we successfully introduced the transcription factors Ascl-1 and Neurog-2. Furthermore, by combining a custom-designed contact lens with a high-performance objective lens, we achieved high-resolution live imaging of the mouse retina in vivo. We identified an early astrocyte response termed the "preconditioning state" and demonstrated that downregulation of S100B is involved in this morphological change. RNA sequencing revealed changes in gene expression related to cytoskeletal structure and cellular metabolism, suggesting that the early astrocyte response is reversible.

Academic Significance and Societal Importance of the Research Achievements

緑内障初期に見られる「Preconditioning state」というアストロサイトの非活性化状態を同定し、その形態・遺伝子発現動態(S100BのダウンレギュレーションとGFAPの増加)を詳細に解析した。これは、アストロサイトのストレス応答が単純な活性化に留まらず、可逆的で段階的に変化することを示唆する新しい概念であり、神経変性疾患におけるグリア細胞の役割を再考させる重要な成果である。発症前段階でのアストロサイトPreconditioning stateの同定は、緑内障の発症予測や進行抑制のための早期診断バイオマーカー、あるいは治療介入タイミングの設定に貢献する可能性がある。

Report

(5 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (22 results)

All 2025 2024 2023 2022 2021

All Journal Article (16 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 16 results,  Open Access: 9 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Transient ocular hypertension remodels astrocytes through S100B2025

    • Author(s)
      Huang Weiran、Matsushita Kenji、Kawashima Rumi、Hara Susumu、Yasukura Yuichi、Yamaguchi Kaito、Usui Shinichi、Baba Koichi、Quantock Andrew J.、Nishida Kohji
    • Journal Title

      PLOS ONE

      Volume: 20 Issue: 2 Pages: 0313556-0313556

    • DOI

      10.1371/journal.pone.0313556

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Necl-1/CADM3 regulates cone synapse formation in the mouse retina2024

    • Author(s)
      Kawashima Rumi、Matsushita Kenji、Mandai Kenji、Sugita Yuko、Maruo Tomohiko、Mizutani Kiyohito、Midoh Yoshihiro、Oguchi Akiko、Murakawa Yasuhiro、Kuniyoshi Kazuki、Sato Ryohei、Furukawa Takahisa、Nishida Kohji、Takai Yoshimi
    • Journal Title

      iScience

      Volume: 27 Issue: 4 Pages: 109577-109577

    • DOI

      10.1016/j.isci.2024.109577

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Intereye comparison of visual field progression in eyes with open-angle glaucoma2023

    • Author(s)
      Morota Misa、Miki Atsuya、Tanimura Aki、Asonuma Sanae、Okazaki Tomoyuki、Kawashima Rumi、Usui Shinichi、Matsushita Kenji、Nishida Kohji
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: online ahead of print Issue: 3 Pages: 312-317

    • DOI

      10.1007/s10384-023-00982-z

    • Related Report
      2023 Research-status Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Long-term course with iris changes after trabeculectomy for uveitic glaucoma associated with iris mammillation: a case report2023

    • Author(s)
      Usui Shinichi、Okazaki Tomoyuki、Fujino Takahiro、Kawashima Rumi、Hashida Noriyasu、Matsushita Kenji、Morii Eiichi、Nishida Kohji
    • Journal Title

      BMC Ophthalmology

      Volume: 23 Issue: 1 Pages: 1-5

    • DOI

      10.1186/s12886-023-02854-z

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deep-learning approach to detect childhood glaucoma based on periocular photograph2023

    • Author(s)
      Kitaguchi Yoshiyuki、Hayakawa Rina、Kawashima Rumi、Matsushita Kenji、Tanaka Hisashi、Kawasaki Ryo、Fujino Takahiro、Usui Shinichi、Shimojyo Hiroshi、Okazaki Tomoyuki、Nishida Kohji
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s41598-023-37389-2

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Case Report: Gonio-endoscopy: a novel approach to minimally invasive glaucoma surgery in a glaucomatous eye2023

    • Author(s)
      Matsushita Kenji、Kawashima Rumi、Kanazawa Noriaki、Usui Shinichi、Nishida Kohji
    • Journal Title

      Frontiers in Ophthalmology

      Volume: 3 Pages: 1-5

    • DOI

      10.3389/fopht.2023.1226316

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of the 1-year surgical outcomes of ab interno trabeculotomy using three types of microhooks2023

    • Author(s)
      Kawashima Rumi、Matsushita Kenji、Nishida Kohji
    • Journal Title

      European Journal of Ophthalmology

      Volume: 34 Issue: 2 Pages: 461-470

    • DOI

      10.1177/11206721231189111

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] 多発性の網膜細動脈瘤の1例.2023

    • Author(s)
      岡本紀夫、佐柳香織、松下賢治
    • Journal Title

      臨床眼科

      Volume: 11 Pages: 1263-1268

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evaluating Visual Field Progression in Advanced Glaucoma Using Trend Analysis of Targeted Mean Total Deviation2022

    • Author(s)
      Miki Atsuya、Okazaki Tomoyuki、Weinreb Robert N.、Morota Misa、Tanimura Aki、Kawashima Rumi、Usui Shinichi、Matsushita Kenji、Nishida Kohji
    • Journal Title

      Journal of Glaucoma

      Volume: 31 Issue: 4 Pages: 235-241

    • DOI

      10.1097/ijg.0000000000001985

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Early Three-Dimensional Intrableb Structural Changes in Primary-Open Angle Glaucoma and Exfoliation Glaucoma After Ex-PRESS Surgery2022

    • Author(s)
      Sugimoto Ikki、Usui Shinichi、Okazaki Tomoyuki、Kawashima Rumi、Miki Atsuya、Kawasaki Ryo、Matsushita Kenji、Nishida Kohji
    • Journal Title

      Translational Vision Science & Technology

      Volume: 11 Issue: 2 Pages: 32-32

    • DOI

      10.1167/tvst.11.2.32

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Case Report: Getting a Peek at the Angle of a Patient with Severe Keratoconus2022

    • Author(s)
      Kawashima Rumi、Matsushita Kenji、Ohnuma Kazuhiko、Maeda Naoyuki、Koh Shizuka、Nishida Kohji
    • Journal Title

      Frontiers in Ophthalmology

      Volume: 2 Pages: 843224-843224

    • DOI

      10.3389/fopht.2022.843224

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Inferior Removal of Dislocated Polymethyl Methacrylate Intraocular Lens and Scleral Refixation in Glaucomatous Eyes2022

    • Author(s)
      Shiraki Akihiko、Sakimoto Susumu、Oie Yoshinori、Soma Takeshi、Miki Atsuya、Usui Shinichi、Sato Shigeru、Matsushita Kenji、Sakaguchi Hirokazu、Nishida Kohji
    • Journal Title

      Ophthalmology and Therapy

      Volume: 11 Issue: 2 Pages: 881-886

    • DOI

      10.1007/s40123-022-00477-z

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Efficacy and safety of 5-fluorouracil in infrared monitor guided bleb revision2021

    • Author(s)
      Kawashima Rumi、Matsushita Kenji、Kawasaki Ryo、Nishida Kohji
    • Journal Title

      BMC Ophthalmology

      Volume: 21 Issue: 1 Pages: 75-82

    • DOI

      10.1186/s12886-021-01843-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intraocular Endoscopy Resolved Tube Occlusion of an Ahmed Glaucoma Valve2021

    • Author(s)
      Kawashima Rumi、Baba Keita、Matsushita Kenji、Soma Takeshi、Kurashige Masako、Umeda Daisuke、Nakamura Makoto、Morii Eiichi、Nishida Kohji
    • Journal Title

      Case Reports in Ophthalmology

      Volume: 12 Issue: 2 Pages: 706-711

    • DOI

      10.1159/000518286

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prognostic factors for successful Baerveldt glaucoma implant surgery for refractory glaucoma after multiple surgeries2021

    • Author(s)
      Matsushita Kenji、Kawashima Rumi、Kawasaki Ryo、Nishida Kohji
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: 65 Issue: 6 Pages: 820-826

    • DOI

      10.1007/s10384-021-00864-2

    • NAID

      40022737478

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Barium-induced toxic anterior segment syndrome2021

    • Author(s)
      Matsushita Kenji、Kawashima Rumi、Hashida Noriyasu、Hamano Yuki、Harada Kazuo、Higashisaka Kazuma、Baba Koichi、Sato Shigeru、Huang Weiran、Matsumoto Hiroshi、Hamanaka Teruhiko、Quantock Andrew J.、Nishida Kohji
    • Journal Title

      European Journal of Ophthalmology

      Volume: 1 Issue: 3 Pages: 1-5

    • DOI

      10.1177/11206721211069223

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Transient Ocular Hypertension Remodels Astrocytes Through S100B2024

    • Author(s)
      Weiran Huang, Kenji Matsushita, Rumi Kawashima, Susumu Hara, Yuichi Yasukura, Kaito Yamaguchi, Shinichi Usui, Koichi Baba, Andrew J Quantock, Kohji Nishida
    • Organizer
      40th anniversary meeting Korean Glaucoma Society
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 瞳孔膜遺残類似症に伴う小児続発閉塞隅角緑内障症例の病態解析と予後2023

    • Author(s)
      松下賢治、河嶋瑠美、藤野貴啓、臼井審一、岡崎智之、川崎愉、橋田徳康、遠藤高生、森本壮、西田幸二
    • Organizer
      第127回日本眼科学会総会
    • Related Report
      2023 Research-status Report
  • [Presentation] 正常眼圧緑内障患者におけるブリモニジン点眼液の視野障害進行速度への影響2022

    • Author(s)
      松下賢治、河嶋瑠美、臼井審一、岡崎智之、藤野貴啓、西田幸二
    • Organizer
      第33回日本緑内障学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 抗てんかん薬:ビガバトリンの功罪2022

    • Author(s)
      松下賢治
    • Organizer
      第34回近畿神経眼科セミナー
    • Related Report
      2022 Research-status Report
  • [Presentation] 緑内障手術への試み,隅角内視鏡、臨床への応用と今後の展望2022

    • Author(s)
      松下賢治
    • Organizer
      第76回日本臨床眼科学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Development of Infrared Guided Bleb Revision & Two Other Technologies2022

    • Author(s)
      Kenji Matsushita
    • Organizer
      3rd Ministry of Health Malaysia National Level World Glaucoma Symposium, 2022
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-04-28   Modified: 2026-01-16  

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