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The complement lectin pathway is involved in the development of exudative age-related macular degeneration

Research Project

Project/Area Number 20K09776
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Omori Tomoko  福島県立医科大学, 医学部, 助教 (50754222)

Co-Investigator(Kenkyū-buntansha) 石龍 鉄樹  福島県立医科大学, 医学部, 教授 (00216540)
関根 英治  福島県立医科大学, 医学部, 教授 (40363759)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords補体 / 加齢黄斑変性 / レクチン経路 / 古典経路
Outline of Research at the Start

滲出型加齢黄斑変性(AMD)の病態形成への補体第二経路の関与が示されてきたが、補体レクチン経路と古典経路の関与は不明である。本研究では、滲出型AMD患者前房水の補体因子の解析および補体因子MASP-1欠損の滲出型AMDモデルマウスの解析により、同病変の病態形成におけるレクチン経路の関与を検証する。本課題の解決により、滲出型AMDの病態機構の解明と新規治療法の開発に繋げることができると考えられる。

Outline of Final Research Achievements

This study was aimed at clarifying the involvement of lectin pathway activation in the development of age-related macular degeneration (AMD). We used MASP-1-deficient mice, which lack lectin pathway activity, and injected NaIO3 into these mice to analyze pathology of retina degeneration. Retinal degeneration was mild in NaIO3-injected MASP-1 mice compared with NaIO3-injected wild type mice. On the other hand, C3 activation levels did not differ between NaIO3-injected MASP-1 and NaIO3-injected wild type mice. This study suggests that MASP-1 is one of the exacerbating factors in the development of AMD. Further study is needed to clarify involvement of the lectin pathway activation in the development of AMD.

Academic Significance and Societal Importance of the Research Achievements

本研究の結果、加齢黄斑変性のモデルであるヨウ素酸ナトリウム誘発網膜障害モデルにおける網膜障害にMASP-1が増悪因子として作用することが示唆された。この成果は、加齢黄斑変性の病態における補体の関与への理解を深め、加齢黄斑変の新規治療法の開発につながると期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2020

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

  • [Journal Article] Age-Related Maculopathy Susceptibility 2 and Complement Factor H Polymorphism and Intraocular Complement Activation in Neovascular Age-Related Macular Degeneration2022

    • Author(s)
      Yutaka Kato, Yasuharu Oguchi, Tomoko Omori, Akihito Kasai, Masashi Ogasawara, Yukinori Sugano, Kanako Itagaki, Akira Ojima, Yumi Ishida, Takeshi Machida, Hideharu Sekine, Tetsuju Sekiryu
    • Journal Title

      Ophthalmology Science

      Volume: 2 Issue: 2 Pages: 100167-100167

    • DOI

      10.1016/j.xops.2022.100167

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The complex formation of MASP-3 with pattern recognition molecules of the lectin complement pathway retains MASP-3 in the circulation2022

    • Author(s)
      Kohei Kusakari, Takeshi Machida, Yumi Ishida, Tomoko Omori, Toshiyuki Suzuki, Masayuki Sekimata, Ikuo Wada, Teizo Fujita, and Hideharu Sekine
    • Journal Title

      Frontiers in Immunology

      Volume: 13 Pages: 907023-907023

    • DOI

      10.3389/fimmu.2022.907023

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 加齢黄斑変性2022

    • Author(s)
      大森智子、関根英治、石龍鉄樹
    • Journal Title

      日本臨牀

      Volume: 80 Pages: 1795-1801

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Changes in complement activation products after anti-VEGF injection for choroidal neovascularization in age-related macular degeneration and pachychoroid disease2021

    • Author(s)
      Tanaka Keiichiro、Oguchi Yasuharu、Omori Tomoko、Ishida Yumi、Shintake Hiroaki、Tomita Ryutaro、Kasai Akihito、Ogasawara Masashi、Sugano Yukinori、Itagaki Kanako、Ojima Akira、Machida Takeshi、Sekine Hideharu、Sekiryu Tetsuju
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 8464-8464

    • DOI

      10.1038/s41598-021-87340-6

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Complement Activation Products and Cytokines in Pachychoroid Neovasculopathy and Neovascular Age-Related Macular Degeneration2020

    • Author(s)
      Kato Yutaka、Oguchi Yasuharu、Omori Tomoko、Shintake Hiroaki、Tomita Ryutaro、Kasai Akihito、Ogasawara Masashi、Sugano Yukinori、Itagaki Kanako、Ojima Akira、Machida Takeshi、Sekine Hideharu、Sekiryu Tetsuju
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 61 Issue: 13 Pages: 39-39

    • DOI

      10.1167/iovs.61.13.39

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ヨウ素酸ナトリウム誘発網膜障害モデルマウスにおけるMASP-1の役割2022

    • Author(s)
      大森智子、町田豪、石田由美、石龍鉄樹、関根英治
    • Organizer
      第58回日本補体学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] The significance of complex formation of MASP-3 with pattern recognition molecules of the lectin complement pathway in the long-term retention of MASP-3 in the circulation2021

    • Author(s)
      Takeshi Machida, Kohei Kusakari, Yumi Ishida, Tomoko Omori, Toshiyuki Suzuki, Masayuki Sekimata, Teizo Fujita, Hideharu Sekine
    • Organizer
      2021 Virtual Workshop of the International ComplementSociety
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] MASP-3の活性化におけるレクチン経路の認識分子の役割2021

    • Author(s)
      草刈浩平、石田由美、大森智子、鈴木俊幸、関亦正幸、町田豪、関根英治
    • Organizer
      第57回日本補体学会学術集会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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