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Effect of mitochondria protection in the retinitis pigmentosa models of P23H rhodopsin mutation

Research Project

Project/Area Number 16K11298
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ophthalmology
Research InstitutionKeio University

Principal Investigator

Suzuki Misa  慶應義塾大学, 医学部(信濃町), 特任助教 (30404966)

Co-Investigator(Kenkyū-buntansha) 小澤 洋子  慶應義塾大学, 医学部(信濃町), 講師 (90265885)
Research Collaborator KAWASHIMA Hirohiko  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords網膜 / 失明 / 遺伝子変異 / ミトコンドリア / 細胞死 / 網膜色素変性症
Outline of Final Research Achievements

Thinning of the retinal photoreceptor cell layer in the heterozygotes of P23H rhodopsin mutant mice was significant in the postnatal 6 weeks old, and further progressed in the 10 weeks old. TUNEL positive cells and apoptotic cells were observed only in the photoreceptor layer at 3 weeks old. Mitochondria targeting antioxidant was constantly administered to the model from the age of 3 weeks old. The apoptotic cells were increased at 6 weeks old. The results were not what we had expected, however, we found that mitochondria condition affected the pathogenesis of the retinitis pigmentosa.

Academic Significance and Societal Importance of the Research Achievements

網膜色素変性症は進行性の視野欠損を呈する疾患であり、最終的には失明に至りうる。日本でも世界でも4000-8000人に1人が発症し、国内失明原因の第3位である。本疾患は遺伝子異常が原因であり、有効な治療法は国内・海外共に確立されていない。早期発見をされた症例でも、特別な進行予防法がないまま、経過観察されるのが通常である。近年では疾患iPS研究などにより研究への機運は上がってきたが、未だ実現可能な治療法は報告されていない。そこで、本疾患のメカニズムを解析し、新規治療法の開発に向けた研究はアンメットニーズに答えることにつながり学術的のみならず社会的に重要である。

Report

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

    (14 results)

All 2019 2018 2017 2016

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 6 results,  Acknowledgement Compliant: 2 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] QD laser eyewear as a visual field aid in a visual field defect model2019

    • Author(s)
      Iyama Chigusa、Shigeno Yuta、Hirano Eri、Kamoshita Mamoru、Nagai Norihiro、Suzuki Misa、Minami Sakiko、Kurihara Toshihide、Sonobe Hideki、Watanabe Kazuhiro、Shinoda Hajime、Tsubota Kazuo、Ozawa Yoko
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 1010-1010

    • DOI

      10.1038/s41598-018-37744-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Benefits of aflibercept treatment for age-related macular degeneration patients with good best-corrected visual acuity at baseline.2017

    • Author(s)
      Minami S, Nagai N, Suzuki M, Kurihara T, Sonobe H, Kamoshita M, Uchida A, Shinoda H, Takagi H, Sonoda S, Sakamoto T, Tsubota K, Ozawa Y
    • Journal Title

      Sci Rep.

      Volume: 8 Issue: 1 Pages: 1-8

    • DOI

      10.1038/s41598-017-18255-4

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Absolute and estimated values of macular pigment optical density in young and aged Asian participants with or without age-related macular degeneration.2017

    • Author(s)
      Ozawa Y, Shigeno Y, Nagai N, Suzuki M, Kurihara T, Minami S, Hirano E, Shinoda H, Kobayashi S, Tsubota K.
    • Journal Title

      Send to BMC Ophthalmol

      Volume: 17 Issue: 1 Pages: 161-166

    • DOI

      10.1186/s12886-017-0557-5

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functional Visual Acuity in Age-Related Macular Degeneration.2016

    • Author(s)
      Tomita Y, Nagai Y, Suzuki M, Shinoda H, Uchida A, Mochimaru H, Izumi-Nagai K, Sasaki M, Tsubota K, Ozawa Y
    • Journal Title

      Optometry and Vision Science

      Volume: 93 Issue: 1 Pages: 70-76

    • DOI

      10.1097/opx.0000000000000755

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Distinct responsiveness to intravitreal ranibizumab therapy in polypoidal choroidal vasculopathy with single or multiple polyps.2016

    • Author(s)
      Suzuki M, Nagai N, Shinoda H, Uchida A, Kurihara T, Tomita Y, Kamoshita M, Iyama C, Tsubota K, Ozawa Y
    • Journal Title

      American Journal of Ophthalmology

      Volume: 166 Pages: 52-59

    • DOI

      10.1016/j.ajo.2016.03.024

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-responsiveness to intravitreal aflibercept treatment in neovascular age-related macular degeneration: implications of serous pigment epithelial detachment.2016

    • Author(s)
      Nagai N, Suzuki M, Uchida A, Kurihara T, Kamoshita M, Minami S, Shinoda H, Tsubota K, Ozawa Y.
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1 Pages: 29619-29619

    • DOI

      10.1038/srep29619

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 視力良好例の網膜中心静脈分枝閉塞症に伴う黄斑浮腫に対するラニビズマブ投与の検討2018

    • Author(s)
      鈴木美砂、永井紀博、南早紀子、園部秀樹、鴨下衛、渡邊一弘、栗原俊英、篠田肇、坪田一男、小沢洋子
    • Organizer
      第57回日本網膜硝子体学会総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 視力良好な滲出型加齢黄斑変性におけるアフリベルセプト硝子体内注射の脈絡膜の解析.2017

    • Author(s)
      南早紀子,永井紀博,鈴木美砂,栗原俊英,内田敦郎,鴨下衛,園部秀樹,篠田肇,園田祥三,坂本泰二,坪田一男,小沢洋子
    • Organizer
      第121回日本眼科学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 糖尿病黄斑浮腫の嚢胞反射強度とラニビズマブ硝子体内注射後の網膜外層変化.2017

    • Author(s)
      永井紀博,鈴木美砂,南早紀子,栗原俊英,鴨下衛,篠田肇,坪田一男,小沢洋子.
    • Organizer
      第121回日本眼科学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 網膜中心静脈分枝閉塞症の黄斑浮腫に対するラニビズマブ投与後の視力と再発予測因子2017

    • Author(s)
      鈴木美砂,永井紀博,栗原俊英,南早紀子,鴨下衛,園部秀樹,内田敦郎,篠田肇,坪田一男.
    • Organizer
      第71回日本臨床眼科学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 健常者の黄斑色素密度とOCT所見の相関.2017

    • Author(s)
      永井紀博,鈴木美砂,南早紀子,栗原俊英,篠田肇,坪田一男,小沢洋子.
    • Organizer
      第71回日本臨床眼科学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 日本人健常者のEvokeDx網膜電図所見.2017

    • Author(s)
      南早紀子,永井紀博,鈴木美砂,栗原俊英,鴨下衛,園部秀樹,篠田肇,坪田一男,小沢洋子
    • Organizer
      第71回日本臨床眼科学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Predictive factors for non-response to intravitreal aflibercept treatment in neovascular age-related macular degeneration.2016

    • Author(s)
      Nagai N, Suzuki M, Uchida A, Kurihara T, Kamoshita M, Minami S, Shinoda H, Tsubota K, Ozawa Y.
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Place of Presentation
      シアトル(アメリカ)
    • Year and Date
      2016-05-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Treatment Responses to the Intravitreal Aflibercept in Polypoidal Choroidal Vasculopathy at year 1.2016

    • Author(s)
      Minami S, Nagai N, Suzuki M, Kurihara T, Shinoda H, Tsubota K, Ozawa Y.
    • Organizer
      The Association for Research in Vision and Ophthalmology
    • Place of Presentation
      シアトル(アメリカ)
    • Year and Date
      2016-05-01
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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