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Identification of autoantibodies and novel therapies of age-related macular degeneration

Research Project

Project/Area Number 15K10889
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ophthalmology
Research InstitutionTokyo Medical and Dental University

Principal Investigator

MOROHOSHI Kei  東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (60598415)

Co-Investigator(Kenkyū-buntansha) 大野 京子  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (30262174)
森田 育男  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (60100129)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords自己抗体 / 脈絡膜新生血管 / 加齢黄斑変性 / 治療薬 / 抗網膜抗体 / バイオマーカー / 自己免疫
Outline of Final Research Achievements

Age-related macular degeneration (AMD) is currently the leading cause of blindness and recent studies have indicated that local inflammation, in particular, autoimmune reaction affects the development of AMD.
We have identified several novel autoantibodies to metabolic enzymes, including pyruvate kinase M2 (PKM2), in the sera of AMD patients. Moreover, shikonin, a potent inhibitor of PKM2, suppressed the production of VEGF from ARPE-19 cells and the development of laser-induced CNV in rats. Hence, our data suggested that PKM2 could be a potential molecular target for novel therapeutic strategies of the disease.

Academic Significance and Societal Importance of the Research Achievements

加齢黄斑変性症は本邦での失明原因の第4位であり、さらなる高齢化により今後その患者数の増加が見込まれる重要な疾患である。現在は、その病態の中心である脈絡膜新生血管(CNV)を抑制するための抗VEGF療法が主体であるが、薬価が非常に高額であり複数回投与が必要であるため、患者の経済的負担が問題になっている。本研究で同定したshikoninは、ごく微量かつ安価に現行の抗VEGF薬以上のCNV抑制効果をもたらすことができ、臨床応用されれば経済的患者負担のみならず、失明率を減らすことができると考えられた。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (11 results)

All 2017 2016 2015

All Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (3 results) Book (2 results)

  • [Journal Article] Swept-source optical coherence tomographic findings in eyes with metastatic choroidal tumor.2017

    • Author(s)
      Ishida T, Morohoshi K, Takeuchi Y, Soma R, Uchida M, Ohno-Matsui K.
    • Journal Title

      Am J Ophthalmol Case Rep.

      Volume: 8 Pages: 44-47

    • DOI

      10.1016/j.ajoc.2017.10.005

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optical Coherence Tomographic Imaging of Posterior Episclera and Tenon's Capsule2017

    • Author(s)
      Ohno-Matsui Kyoko、Fang Yuxin、Morohoshi Kei、Jonas Jost B.
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 58 Issue: 9 Pages: 3389-3389

    • DOI

      10.1167/iovs.16-21394

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Six-year outcomes of intravitreal bevacizumab for choroidal neovascularization in patients with pathologic myopia.2016

    • Author(s)
      Kasahara K, Moriyama M, Morohoshi K, Yoshida T, Simada N, Nagaoka N, Yokoi T, Shinohara K, Kaneko Y, Suga M, Ohno-Matsui K.
    • Journal Title

      Retina

      Volume: 印刷中 Issue: 6 Pages: 1055-1064

    • DOI

      10.1097/iae.0000000000001313

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Glaucomatous-Type Optic Discs in High Myopia.2015

    • Author(s)
      Nagaoka N, Jonas JB, Morohoshi K, Moriyama M, Shimada N, Yoshida T, Ohno-Matsui K.
    • Journal Title

      PLoS One.

      Volume: 10 Issue: 10 Pages: 362-368

    • DOI

      10.1371/journal.pone.0138825

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anti-glutamine synthetase and other potential autoantibody biomarkers in the sera of patients with age-related macular degeneration.2015

    • Author(s)
      Morohoshi K, C-H Kuo, Ohbayashi M, Patel N, Chong V, Bird AC, Ono SJ.
    • Journal Title

      Med. Res. Arch.

      Volume: 3 Issue: 3

    • DOI

      10.18103/mra.v0i3.121

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Chorioretinal folds in eyes with myopic staphyloma.2015

    • Author(s)
      Ishida T, Shinohara K, Tanaka Y, Moriyama M, Morohoshi K, Shimada N, Yoshida T, Ohno-Matsui K.
    • Journal Title

      Am J Ophthalmol.

      Volume: 160 Issue: 3 Pages: 608-613

    • DOI

      10.1016/j.ajo.2015.05.028

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Swept-source OCTを用いた後部テノン嚢および上強膜の観察2017

    • Author(s)
      方 雨新、大野京子、諸星 計、Jost B Jonas
    • Organizer
      第71回日本臨床眼科学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 強度近視眼白内障手術におけるパーソナルA定数と屈折誤差の検討2015

    • Author(s)
      山本樹里、諸星 計、大林雅春、星野真理、大野京子
    • Organizer
      第69回 日本臨床眼科学会
    • Place of Presentation
      名古屋国際会議場 (愛知県名古屋市)
    • Year and Date
      2015-10-22
    • Related Report
      2015 Research-status Report
  • [Presentation] 加齢黄斑変性における自己抗体の同定と病態への関与2015

    • Author(s)
      長岡奈都子、諸星 計、篠原宏成、島田典明、吉田武史、大野京子
    • Organizer
      第119回 日本眼科学会総会
    • Place of Presentation
      ロイトン札幌(北海道札幌市)
    • Year and Date
      2015-04-16
    • Related Report
      2015 Research-status Report
  • [Book] 結膜の充血、「内科診断学」第3版2016

    • Author(s)
      諸星 計、大野京子
    • Publisher
      医学書院
    • Related Report
      2015 Research-status Report
  • [Book] 強度近視に対する白内障手術の注意点、オクリスタ2016

    • Author(s)
      長岡奈都子, 諸星 計
    • Publisher
      全日本病院出版会
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2021-01-27  

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