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Establishment of novel chemical screening assay for risk factors in cone photoreceptors of macular dystrophies

Research Project

Project/Area Number 19K23707
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0605:Veterinary medical science, animal science, and related fields
Research InstitutionGifu Pharmaceutical University

Principal Investigator

Otsu Wataru  岐阜薬科大学, 薬学部, 特任助教 (50843091)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsライソゾーム / 視細胞 / 光障害 / 錐体細胞 / 黄斑ディストロフィー / バイオマーカー
Outline of Research at the Start

錐体細胞は黄斑に密に分布する視細胞であり、中心視野における視力と色覚を担っている。本研究では視細胞由来株である661W細胞と新しく開発されたマウス網膜遺伝子導入技術を用い、黄斑ディストロフィー変異体発現や青色LED光照射などのストレス条件下における錐体細胞死の分子メカニズムの解明、特にライソゾームの機能と病態との関わりを明らかにする。具体的には、i)錐体細胞におけるライソゾームの役割を明らかにし、ii)ライソゾームの機能異常によって影響を受ける下流経路について同定し、iii)それらの異常を選択的に抑える化合物をスクリーニングする方法を確立し疾患の治療へ応用できる技術を開発することを目的とする。

Outline of Final Research Achievements

It has been known that excessive light stress causes photoreceptor death. Blue light has the shortest wave length of visual light, and therefore is though as a risk for damaging retina and vision loss because of the highest amount of energy. However, it remains less known the molecular mechanism how blue light damages photoreceptors. To address this question, the role of lysosomes in the stress response to blue light was examined. Blue light-emitting diode (LED) light induced lysosomal membrane permeabilization and Transcription Factor EB (TFEB) nuclear transport, resulting in the activation of the lysosome related genes. Antioxidant ameliorate this change, suggesting that oxidative stress is a cause for lysosomal damages. These finding indicates that chemicals which protects lysosomes from light might be a new target for preserving vision from retinal diseases such as macular dystrophy.

Academic Significance and Societal Importance of the Research Achievements

本研究では、黄斑ディストロフィーの病態解明を目的に実験を行い、光障害に対する視細胞のストレス応答反応におけるライソゾームの重要性について明らかにした。ライソゾームは細胞が取り込んだ物質の消化に関わるのみならず、mTOR経路などを介して、細胞の代謝全体に重要な細胞内小器官である。また、ライソゾームの異常は特に神経変性疾患との関わりがよく知られており、本研究で明らかになった知見は、眼科領域だけでなく、脳や神経の分野において広く貢献できると考えられる。黄斑ディストロフィーは現時点では根治療法がないため、研究成果を更に発展させることにより新たな治療法開発への応用が期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2021 2020 2019 Other

All Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 5 results) Presentation (12 results) (of which Int'l Joint Research: 2 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Establishment of a pigmented murine model abundant with characteristics of retinal vein occlusion2021

    • Author(s)
      Miyagi Sugao、Nishinaka Anri、Yamamoto Takumi、Otsu Wataru、Nakamura Shinsuke、Shimazawa Masamitsu、Kitaoka Takashi、Hara Hideaki
    • Journal Title

      Experimental Eye Research

      Volume: 204 Pages: 108441-108441

    • DOI

      10.1016/j.exer.2021.108441

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Brazilian green propolis promotes the cytoprotective expression of heme oxygenase-1 against oxidative stress injury in murine myoblast cells2020

    • Author(s)
      Otsu Wataru、Chinen Naoki、Ohuchi Kazuki、Ando Shiori、Nakamura Shinsuke、Kono Hiroyuki、Shimazawa Masamitsu、Hara Hideaki
    • Journal Title

      Functional Foods in Health and Disease

      Volume: 10 Issue: 12 Pages: 493-493

    • DOI

      10.31989/ffhd.v10i12.756

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Creation of retinal vein occlusion model in cynomolgusmonkeys and determination of its pathological features2020

    • Author(s)
      Inagaki Satoshi、Shimazawa Masamitsu、Otsu Wataru、Araki Tomoaki、Numata Yosuke、Nakamura Shinsuke、Tsusaki Hideshi、Hara Hideaki
    • Journal Title

      Current Neurovascular Research

      Volume: 17 Issue: 1 Pages: 123-133

    • DOI

      10.2174/1567202617999200831151118

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Survival Motor Neuron Protein Modulates Lysosomal Function Through the Expression of Transcription Factor EB in Motoneurons2020

    • Author(s)
      Shiori Ando , Wataru Otsu , Daiki Osanai , Satoshi Kamiya , Kodai Ishida , Shinsuke Nakamura , Masamitsu Shimazawa , Hideaki Hara
    • Journal Title

      BPB Reports

      Volume: 3 Pages: 130-137

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Blue light-emitting diode irradiation promotes transcription factor EB-mediated lysosome biogenesis and lysosomal cell death in murine photoreceptor-derived cells2020

    • Author(s)
      Otsu Wataru、Ishida Kodai、Nakamura Shinsuke、Shimazawa Masamitsu、Tsusaki Hideshi、Hara Hideaki
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 526 Issue: 2 Pages: 479-484

    • DOI

      10.1016/j.bbrc.2020.03.118

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tauroursodeoxycholic Acid Promotes Neuronal Survival and Proliferation of Tissue Resident Stem and Progenitor Cells in Retina of Adult Zebrafish2020

    • Author(s)
      Yuichi Saito , Hiroyuki Okuyoshi , Shinsuke Nakamura , Wataru Otsu , Akihiro Yamaguchi , Peter F. Hitchcock , Mikiko Nagashima , Masamitsu Shimazawa , Hideaki Hara
    • Journal Title

      BPB Reports

      Volume: 3 Pages: 92-96

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-vascular Endothelial Growth Factor Antibody Limits the Vascular Leakage and Decreases Subretinal Fibrosis in a Cynomolgus Monkey Choroidal Neovascularization Model2020

    • Author(s)
      Inagaki Satoshi、Shimazawa Masamitsu、Hamaguchi Koji、Otsu Wataru、Araki Tomoaki、Sasaki Yuji、Numata Yosuke、Tsusaki Hideshi、Hara Hideaki
    • Journal Title

      Current Neurovascular Research

      Volume: 17 Issue: 4 Pages: 420-428

    • DOI

      10.2174/1567202617666200523163636

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cholesterol-binding protein TSPO2 coordinates maturation and proliferation of terminally differentiating erythroblasts2020

    • Author(s)
      Kiatpakdee Benjaporn、Sato Kota、Otsuka Yayoi、Arashiki Nobuto、Chen Yuqi、Tsumita Takuya、Otsu Wataru、Yamamoto Akito、Kawata Reo、Yamazaki Jumpei、Sugimoto Yoshikazu、Takada Kensuke、Mohandas Narla、Inaba Mutsumi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 295 Issue: 23 Pages: 8048-8063

    • DOI

      10.1074/jbc.ra119.011679

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A triterpenoid Nrf2 activator, RS9, promotes LC3-associated phagocytosis of photoreceptor outer segments in a p62-independent manner2020

    • Author(s)
      Saito Yuichi、Yako Tomohiro、Otsu Wataru、Nakamura Shinsuke、Inoue Yuki、Muramatsu Aomi、Nakagami Yasuhiro、Shimazawa Masamitsu、Hara Hideaki
    • Journal Title

      Free Radical Biology and Medicine

      Volume: 152 Pages: 235-247

    • DOI

      10.1016/j.freeradbiomed.2020.03.012

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Late Endosomal Pathway Regulates the Ciliary Targeting of Tetraspanin Protein Peripherin 22019

    • Author(s)
      Otsu Wataru、Hsu Ya-Chu、Chuang Jen-Zen、Sung Ching-Hwa
    • Journal Title

      The Journal of Neuroscience

      Volume: 39 Pages: 2811-18

    • DOI

      10.1523/jneurosci.2811-18.2019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] CLIC4 regulates late endosomal trafficking and matrix degradation activity of MMP14 at focal adhesions in RPE cells2019

    • Author(s)
      Hsu Kuo-Shun、Otsu Wataru、Li Yao、Wang Heuy-Ching、Chen Shuibing、Tsang Stephen H.、Chuang Jen-Zen、Sung Ching-Hwa
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 12247-12247

    • DOI

      10.1038/s41598-019-48438-0

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanisms of cell proliferation through primary cilium2019

    • Author(s)
      Saito Masaki、Otsu Wataru
    • Journal Title

      Folia Pharmacologica Japonica

      Volume: 154 Issue: 4 Pages: 197-202

    • DOI

      10.1254/fpj.154.197

    • NAID

      130007726220

    • ISSN
      0015-5691, 1347-8397
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 次世代タバコ抽出物による角膜上皮細胞の鉄依存的細胞死2021

    • Author(s)
      大津 航、石田 紘大、中村 信介、嶋澤 雅光、角崎 英志、原 英彰
    • Organizer
      第40回日本眼薬理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] カニクイザル網膜静脈閉塞症モデルの確立と病態解明2021

    • Author(s)
      稲垣 賢、嶋澤 雅光、大津 航、荒木 智陽、沼田 洋輔、中村 信介、角崎 英志、原 英彰
    • Organizer
      第40回日本眼薬理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 視細胞と角膜上皮細胞における青色LED光誘発細胞障害の分子メカニズム2020

    • Author(s)
      石田 紘大、大津 航、矢古宇 智弘、中村 信介、嶋澤 雅光、角崎 英志、原 英
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 運動ニューロンにおけるSMNタンパク質によるTFEBを介したライソゾーム関連因子の発現調節2020

    • Author(s)
      大津 航、安藤 栞、長内 大樹、神谷 聡、石田 紘大、中村 信介、嶋澤 雅光、原 英彰
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 紙タバコ及び加熱式タバコ煙抽出物による角膜上皮細胞死の分子メカニズム2020

    • Author(s)
      石田 紘大、知念 尚希、大津 航、中村 信介、嶋澤 雅光、角崎 英志、原 英彰
    • Organizer
      第138回日本薬理学会年会近畿部会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 青色LED光障害に対するATF4経路を標的とした視細胞保護の検討2020

    • Author(s)
      塩津 佑果、大津 航、中村 信介、嶋澤 雅光、角崎 英志、原 英彰
    • Organizer
      第138回日本薬理学会年会近畿部会
    • Related Report
      2020 Annual Research Report
  • [Presentation] タバコ煙抽出物による角膜上皮細胞障害に対するエタノール抽出ブラジル産プロポリスによる保護作用2020

    • Author(s)
      石田 紘大、知念 尚希、大津 航、河野 宏行、中村 信介、嶋澤 雅光、角崎 英志、原 英彰
    • Organizer
      第11回岐阜薬科大学機能性健康食品研究講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 光誘発角膜上皮細胞障害に対する新規ラジカルスカベンジャーの保護作用2020

    • Author(s)
      石田 紘大、矢古宇 智弘、大津 航、中村 信介、嶋澤 雅光、角崎 英志、原 英彰
    • Organizer
      第137回日本薬理学会近畿部会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Triterpenoid Nrf2 activator, RS9, promotes LC3-associated phagocytosis of photoreceptor outer segments without p62 induction2020

    • Author(s)
      Shinsuke Nakamura, Yuichi Saito, Tomohiro Yako, Wataru Otsu, Yuki Inoue, Aomi Muramatsu, Yasuhiro Nakagami, Masamitsu Shimazawa, Hideaki Hara
    • Organizer
      ARVO 2020 Annual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MICE WITH RPE-SPECIFIC CLIC4 DEFICIENCY EXHIBIT AMD-LIKE CHANGES IN THE RETINA-RPE-CHOROID COMPLEX.2019

    • Author(s)
      Otsu W., Hsu KS., Dunaief JL., Li Y., Tsang SH., Chuang JZ., and Sung CH.
    • Organizer
      ARVO Annual Meeting 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 網膜静脈閉塞症モデルを用いた浮腫形成メカニズムに関する研究2019

    • Author(s)
      中村 信介、西中 杏里、大津 航、嶋澤 雅光、原 英彰
    • Organizer
      第4回名大医薬系3部局交流シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] 新規錐体細胞トランスフェクション法を用いたペリフェリン2の一次繊毛輸送のメカニズムの解析2019

    • Author(s)
      大津 航, Hsu YC., Chuang JZ., and Sung CH.
    • Organizer
      第 42 回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Book] 最新皮膚エイジングメカニズムと高機能性シワ改善化粧品の開発2020

    • Author(s)
      正木仁
    • Total Pages
      310
    • Publisher
      シーエムシー出版
    • ISBN
      9784781315126
    • Related Report
      2020 Annual Research Report
  • [Remarks] 岐阜薬科大学・ バイオメディカルリサーチ講座

    • URL

      https://bmrgpu.wixsite.com/website

    • Related Report
      2020 Annual Research Report
  • [Remarks] 岐阜薬科大学・バイオメディカルリサーチ講座のWebページ

    • URL

      https://bmrgpu.wixsite.com/website

    • Related Report
      2019 Research-status Report

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Published: 2019-09-03   Modified: 2022-01-27  

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