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To explore a new therapeutic approach for retinitis pigmentosa based on the patient-derived iPS cell research

Research Project

Project/Area Number 21K09683
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Ozawa Yoko  慶應義塾大学, 医学部(信濃町), 特任准教授 (90265885)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords網膜 / 網膜色素変性 / 網膜神経保護 / 失明 / iPS細胞 / 神経保護
Outline of Research at the Start

本研究は、有効な治療法が無い網膜色素変性という遺伝性神経変性疾患の、新規神経保護治療法の開発を目的とする。申請者らはこれまでに、疾患iPS研究を行い、小胞体ストレスを標的とした神経保護治療の可能性を提案した。また別途、ストレス下においても継続的エネルギー供給をすれば、視細胞死を抑制し生存を促進できることを報告した。そこで、小胞体ストレスとエネルギー代謝の両方を制御しうるシャペロンタンパクである4-phenylbutyric acid (PBA)を用い、網膜色素変性モデルマウスにおける治療効果とそのメカニズムを解析する。これにより将来の新規治療法の開発、すなわち臨床応用につなげる。

Outline of Final Research Achievements

Retinitis pigmentosa is one of the inherited retinal disorders in which retinal photoreceptor cells and/or retinal pigment epithelium are affected, and causes blindness; the underlying mechanisms were still obscure. In the current study, we showed that the candidate drug suppressed retinal degeneration and promoted retinal protection in the mouse models of retinitis pigmentosa with rhodopsin mutation. We clarified that the drug promoted photoreceptor survival and suppressed visual dysfunction by suppressing endoplasmic reticulum stress. The result will help developing a new therapeutic approach for suppressing progression of retinitis pigmentosa.

Academic Significance and Societal Importance of the Research Achievements

網膜色素変性は4000-8000人に1人という高率に生じる遺伝性疾患で国内失明原因の第2位を占める。RPE65遺伝子変異に伴う変性にのみ遺伝子治療が適応になったが、それ以外の原因遺伝子を持つ、もしくは原因遺伝子が同定されない症例に対しては治療法が無い。本研究でロドプシン変異に伴う変性のメカニズムの一端を解明し薬剤候補を示した学術的意義は大きい。更に、小胞体ストレスを来す他の変異を持つ症例にも応用しうる薬剤治療の開発につなぐ研究となった。これにより、多くの症例に適応可能な治療法の開発につながったため、社会的意義は大きい。

Report

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

    (36 results)

All 2023 2022 2021

All Journal Article (19 results) (of which Peer Reviewed: 19 results,  Open Access: 19 results) Presentation (17 results) (of which Int'l Joint Research: 4 results,  Invited: 5 results)

  • [Journal Article] Diabetic choriocapillaris flow deficits affect the outer retina and are related to hemoglobin A1c and systolic blood pressure levels2023

    • Author(s)
      Nagai Norihiro、Mushiga Yasuaki、Ozawa Yoko
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 22570-22570

    • DOI

      10.1038/s41598-023-50132-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systemic lupus erythematosus mimicking retinal migraine: a case report2023

    • Author(s)
      Tezuka Toshiki、Shibata Mamoru、Hanaoka Hironari、Izawa Yoshikane、Kikuchi Taku、Akino Kunihiko、Ozawa Yoko、Saito Masataka、Kaneko Yuko、Nakahara Jin、Takizawa Tsubasa
    • Journal Title

      Cephalalgia

      Volume: 43 Issue: 12 Pages: 1-6

    • DOI

      10.1177/03331024231219477

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Associations between fatty acid intake and diabetic retinopathy in a Japanese population2023

    • Author(s)
      Sasaki Mariko、Yuki Kenya、Hanyuda Akiko、Yamagishi Kazumasa、Motomura Kaoru、Kurihara Toshihide、Tomita Yohei、Mori Kiwako、Ozawa Nobuhiro、Ozawa Yoko、Sawada Norie、Negishi Kazuno、Tsubota Kazuo、Tsugane Shoichiro、Iso Hiroyasu
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 12903-12903

    • DOI

      10.1038/s41598-023-39734-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluating fine changes in visual function of diabetic eyes using spatial-sweep steady-state pattern electroretinography2023

    • Author(s)
      Nagai Norihiro、Mushiga Yasuaki、Ozawa Yoko
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 13686-13686

    • DOI

      10.1038/s41598-023-40686-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Long-term surveillance provides real-world evidences of safety and effectiveness in intravitreal aflibercept treatment for age-related macular degeneration.2023

    • Author(s)
      Ozawa Y, Ohgami K, Sasaki K, Hirano K, Sunaya T.
    • Journal Title

      Sci Rep.

      Volume: 13(1) Issue: 1 Pages: 10597-10597

    • DOI

      10.1038/s41598-023-37584-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Retinal Pigment Epithelial Abnormality and Choroidal Large Vascular Flow Imbalance Are Associated with Choriocapillaris Flow Deficits in Age-Related Macular Degeneration in Fellow Eyes.2023

    • Author(s)
      Nagai N, Mushiga Y, Ozawa Y.
    • Journal Title

      J Clin Med.

      Volume: 4 Issue: 4 Pages: 1360-1360

    • DOI

      10.3390/jcm12041360

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association between Fatty Acid Intakes and Age-Related Macular Degeneration in a Japanese Population: JPHC-NEXT Eye Study.2023

    • Author(s)
      Yasukawa T, Sasaki M, Motomura K, Yuki K, Kurihara T, Tomita Y, Mori K, Ozawa N, Ozawa Y, Yamagshi K, Hanyuda A, Sawada N, Tsubota K, Tsugane S, Iso H.
    • Journal Title

      Transl Vis Sci Technol.

      Volume: 1 Issue: 1 Pages: 3-3

    • DOI

      10.1167/tvst.12.1.3

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship Between Blood Pressure and Intraocular Pressure in the JPHC-NEXT Eye Study.2022

    • Author(s)
      Yasukawa T, Hanyuda A, Yamagishi K, Yuki K, Uchino M, Ozawa Y, Sasaki M, Tsubota K, Sawada N, Negishi K, Tsugane S, Iso H.
    • Journal Title

      Sci Rep.

      Volume: 1 Issue: 1 Pages: 17493-17493

    • DOI

      10.1038/s41598-022-22301-1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of treating age-related macular degeneration before visual function is impaired.2022

    • Author(s)
      Aichi R, Nagai N, Ohkoshi K, Ozawa Y.
    • Journal Title

      J Clin Med.

      Volume: 19 Issue: 19 Pages: 5726-5726

    • DOI

      10.3390/jcm11195726

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Retinal circulation time/arm-to-retina time ratio in the fluorescein angiography to evaluate retina-specific hemodynamics.2022

    • Author(s)
      Mushiga Y, Nagai N, Ohkoshi K, Ozawa Y.
    • Journal Title

      Sci Rep.

      Volume: 1 Issue: 1 Pages: 17457-17457

    • DOI

      10.1038/s41598-022-21117-3

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Choriocapillaris Flow Imbalance in Fellow Eyes in Age-related Macular Degeneration.2022

    • Author(s)
      Harada N, Nagai N, Mushiga Y, Ozawa Y.
    • Journal Title

      Invest Ophthalmol Vis Sci.

      Volume: 9 Issue: 9 Pages: 13-13

    • DOI

      10.1167/iovs.63.9.13

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Epigenetic Modification of PGC-1α by a Chemical Chaperon on Mitochondria Biogenesis and Visual Function in Retinitis Pigmentosa2022

    • Author(s)
      Ozawa Y, Toda E, Homma K, Osada H, Nagai N, Tsubota K, Okano H.
    • Journal Title

      Cells

      Volume: 11 Issue: 9 Pages: 1497-1497

    • DOI

      10.3390/cells11091497

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-Perfusion Area Index for Prognostic Prediction in Diabetic Retinopathy2022

    • Author(s)
      Ofuji Y, Katada Y, Tomita Y, Nagai N, Sonobe H, Watanabe K, Shinoda H, Ozawa Y, Negishi K, Tsubota K Kurihara T.
    • Journal Title

      Life

      Volume: 4 Issue: 4 Pages: 542-542

    • DOI

      10.3390/life12040542

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Arm-to-retina time predicts visual outcome of anti-vascular endothelial growth factor treatment for macular edema due to central retinal vein occlusion.2021

    • Author(s)
      Takei T, Nagai N, Ohkoshi K, Ozawa Y*.
    • Journal Title

      Sci Rep.

      Volume: 12 Issue: 1 Pages: 2194-2194

    • DOI

      10.1038/s41598-022-06281-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shorter axial length is a risk factor for proliferative vitreoretinopathy grade C in eyes unmodified by surgical invasion.2021

    • Author(s)
      Minami S, Uchida A, Nagai N, Shinoda H, Kurihara T, Ban N, Terasaki H, Takagi H, Tsubota K, Sakamoto T, Ozawa Y*.
    • Journal Title

      Clin Med.

      Volume: 10 Issue: 17 Pages: 3944-3944

    • DOI

      10.3390/jcm10173944

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuroprotective Effect of 4-Phenylbutyric Acid against Photo-Stress in the Retina2021

    • Author(s)
      Guzman Mendoza Naymel Alejandra、Homma Kohei、Osada Hideto、Toda Eriko、Ban Norimitsu、Nagai Norihiro、Negishi Kazuno、Tsubota Kazuo、Ozawa Yoko
    • Journal Title

      Antioxidants

      Volume: 10 Issue: 7 Pages: 1147-1147

    • DOI

      10.3390/antiox10071147

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Factors associated with achieving intraocular pressure lower than 15 mmHg by Trabectome surgery in primary open-angle glaucoma.2021

    • Author(s)
      Nakamura K, Honda R, Soeda S, Nagai N, Takahashi O, Kadonosono K, Ozawa Y*.
    • Journal Title

      Sci Rep.

      Volume: 11 Issue: 1 Pages: 14308-14308

    • DOI

      10.1038/s41598-021-93711-w

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Assessment of Hypofluorescent Foci on Late-Phase Indocyanine Green Angiography in Central Serous Chorioretinopathy.2021

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

      J Clin Med.

      Volume: 10 Issue: 10 Pages: 2178-2178

    • DOI

      10.3390/jcm10102178

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] ADIPOR1 deficiency-induced suppression of retinal ELOVL2 and docosahexaenoic acid levels during photoreceptor degeneration and visual loss2021

    • Author(s)
      Osada Hideto、Toda Eriko、Homma Kohei、Guzman Naymel A.、Nagai Norihiro、Ogawa Mamoru、Negishi Kazuno、Arita Makoto、Tsubota Kazuo、Ozawa Yoko
    • Journal Title

      Cell Death & Disease

      Volume: 12 Issue: 5 Pages: 458-458

    • DOI

      10.1038/s41419-021-03741-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Choriocapillaris Flow Imbalance and Retinal Pigment Epithelium Abnormality in Fellow Eyes of Age-related Macular Degeneration2023

    • Author(s)
      Ozawa Y.
    • Organizer
      46th Annual Meeting Macula Society.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Anti-VEGF therapy for Diabetic Macular Edema (DME)2023

    • Author(s)
      Ozawa Y.
    • Organizer
      Novartis Expert Engagement
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Impact of intraretinal fluid control on outer retinal structure and visual function in diabetic macular edema (DME)2023

    • Author(s)
      Ozawa Y.
    • Organizer
      International Ocular Inflammation Society.
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 糖尿病患者におけるEvokeDx;網膜電図の検討.2023

    • Author(s)
      永井紀博,虫賀庸朗,小沢洋子.
    • Organizer
      第127回日本眼科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 滲出型加齢黄斑変性における病型別のiRORAとcRORAの陽性率と視力との関係.2023

    • Author(s)
      ハズラデバブラタ,加藤想史,内田敦郎,富田洋平,永井紀博,鈴木美砂,南早紀子,篠島亜里,藤岡俊平,伴紀充,栗原俊英,篠田肇,小沢洋子,根岸一乃.
    • Organizer
      第127回日本眼科学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 網膜神経障害・変性に対する~代謝に着目した神経保護アプローチ2023

    • Author(s)
      小沢洋子.
    • Organizer
      第127回日本眼科学会総会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 加齢黄斑変性に対する抗VEGF治療において視力の維持改善に関わる術前因子2022

    • Author(s)
      愛知梨沙,永井紀博,小沢洋子.
    • Organizer
      第126回日本眼科学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 滲出型加齢黄斑変性に対するブロルシズマブ投与後の脈絡膜変化 (SKY-Team Study)2022

    • Author(s)
      永井紀博,鈴木美砂,内田敦郎,南早紀子,篠島亜里,栗原俊英,長田頼河,溝口あや子,鈴木高佳,篠田肇,水木信久,根岸一乃,小沢洋子.
    • Organizer
      第126回日本眼科学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 糖尿病網膜症の細胞分子病態. 教育セミナー 糖尿病網膜症と腎症の類似点と相違点2022

    • Author(s)
      小沢洋子.
    • Organizer
      第37回日本糖尿病合併症学会・第28回日本糖尿病眼学会総会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 遺伝性神経変性疾患である網膜色素変性に対する神経保護治療の可能性.2022

    • Author(s)
      小沢洋子.
    • Organizer
      第42回日本眼薬理学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Impact of lipid metabolism in age-related macular degeneration2022

    • Author(s)
      Ozawa Y.
    • Organizer
      FujiRetina 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] タウリンはミトコンドリア病 MELAS 疾患 iPS 細胞の代謝不全と網膜色素上皮細胞の上皮間葉転換を抑制する.2021

    • Author(s)
      本間耕平, 坪田一男, 岡野栄之, 小沢洋子.
    • Organizer
      第44回日本神経科学大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 初回手術にアーメッド緑内障バルブを選択した落屑緑内障の一例 .2021

    • Author(s)
      愛知梨沙,輿水純子,都筑賢太郎,本田理峰,小沢洋子.
    • Organizer
      第32回日本緑内障学会 京都 2021/9/10-9/12
    • Related Report
      2021 Research-status Report
  • [Presentation] 加齢黄斑変性を有する患者群の僚眼における光干渉断層血管撮影像の解析.2021

    • Author(s)
      原田成美,虫賀庸朗,新井英介,永井紀博,小沢洋子.
    • Organizer
      第37回日本眼循環学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 蛍光眼底造影における Retina Circulation time と糖尿病黄斑浮腫の関係 .2021

    • Author(s)
      虫賀庸朗,新井英介,永井紀博,小沢洋子.
    • Organizer
      第37回日本眼循環学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 腕 - 網膜循環時間と網膜中心静脈閉塞症の治療予後の関係 .2021

    • Author(s)
      武井達彦, 新井英介, 永井紀博, 小沢洋子.
    • Organizer
      第75回日本臨床眼科学会
    • Related Report
      2021 Research-status Report
  • [Presentation] ミトコンドリア病疾患 iPS 細胞を用いたドラッグスクリーニングシステム構築2021

    • Author(s)
      本間耕平, 坪田一男, 岡野栄之, 小沢洋子.
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report

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

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