• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of the regulatory mechanism underlying light and dark adaptation in retinal photoreceptor cells and its application to retinal protection

Research Project

Project/Area Number 17K15548
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field General anatomy (including histology/embryology)
Research InstitutionOsaka University

Principal Investigator

CHAYA Taro  大阪大学, 蛋白質研究所, 助教 (50747087)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords網膜 / 視細胞 / 順応 / 繊毛 / 細胞内輸送 / ユビキチン / Gたんぱく質 / マウス / 明暗順応 / 水平細胞 / 神経節細胞 / 明順応
Outline of Final Research Achievements

Vision begins with light reception by retinal photoreceptor cells, and yet light can be harmful to these photoreceptors. Although rod photoreceptors become sensitive to light in darkness, they can also reduce the light sensitivity and avoid excessive activation, which protects them from brighter light. However, the underlying regulatory mechanisms remain unclear. In this study, we found that Klhl18 ubiquitin ligase regulates light-dependent translocation of a heterotrimeric G protein, transducin, a cellular process that is involved in light/dark adaptation.

Academic Significance and Societal Importance of the Research Achievements

網膜変性を引き起こすメカニズムの一つとして光によるダメージが知られている。光の長期曝露によって代謝老廃物や細胞ストレスの蓄積が徐々に進み、視細胞や網膜色素上皮の機能低下や細胞死などが引き起こされ、加齢黄斑変性や網膜色素変性症を含む視覚障害の発症や増悪につながることが報告されている。それゆえ光によるダメージを減弱することは網膜保護や変性進行抑制の観点から重要である。明順応による光受容感度の低下は視細胞の光によるダメージを軽減する役割を持つことが知られており、本研究の成果により得られた知見は直接、網膜保護へ向けた新しい創薬ターゲットになる可能性を秘めていると考えられる。

Report

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

    (15 results)

All 2019 2018 2017 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] miR-124 dosage regulates prefrontal cortex function by dopaminergic modulation.2019

    • Author(s)
      Kozuka T, Omori Y, Watanabe S, Tarusawa E, Yamamoto H, Chaya T, Furuhashi M, Morita M, Sato T, Hirose S, Ohkawa Y, Yoshimura Y, Hikida T, Furukawa T.
    • Journal Title

      Sci Rep.

      Volume: Mar 5;9(1) Issue: 1 Pages: 3445-3445

    • DOI

      10.1038/s41598-019-38910-2

    • NAID

      120006579467

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enriched expression of the ciliopathy gene Ick in cell proliferating regions of adult mice2018

    • Author(s)
      Tsutsumi R, Chaya T, Furukawa T
    • Journal Title

      Gene Expr. Patterns

      Volume: 29 Pages: 18-23

    • DOI

      10.1016/j.gep.2018.04.005

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lrit1, a Retinal Transmembrane Protein, Regulates Selective Synapse Formation in Cone Photoreceptor Cells and Visual Acuity2018

    • Author(s)
      Ueno Akiko、Omori Yoshihiro、Sugita Yuko、Watanabe Satoshi、Chaya Taro、Kozuka Takashi、Kon Tetsuo、Yoshida Satoyo、Matsushita Kenji、Kuwahara Ryusuke、Kajimura Naoko、Okada Yasushi、Furukawa Takahisa
    • Journal Title

      Cell Reports

      Volume: 22 Issue: 13 Pages: 3548-3561

    • DOI

      10.1016/j.celrep.2018.03.007

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Versatile functional roles of horizontal cells in the retinal circuit2017

    • Author(s)
      Chaya Taro、Matsumoto Akihiro、Sugita Yuko、Watanabe Satoshi、Kuwahara Ryusuke、Tachibana Masao、Furukawa Takahisa
    • Journal Title

      Scientific Reports

      Volume: 7 Issue: 1 Pages: 5540-5540

    • DOI

      10.1038/s41598-017-05543-2

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The TRPM1 Channel Is Required for Development of the Rod ON Bipolar Cell-AII Amacrine Cell Pathway in the Retinal Circuit2017

    • Author(s)
      Kozuka Takashi、Chaya Taro、Tamalu Fuminobu、Shimada Mariko、Fujimaki-Aoba Kayo、Kuwahara Ryusuke、Watanabe Shu-Ichi、Furukawa Takahisa
    • Journal Title

      The Journal of Neuroscience

      Volume: 37 Issue: 41 Pages: 9889-9900

    • DOI

      10.1523/jneurosci.0824-17.2017

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Samd7 is a cell type-specific PRC1 component essential for establishing retinal rod photoreceptor identity2017

    • Author(s)
      Omori Yoshihiro、Kubo Shun、Kon Tetsuo、Furuhashi Mayu、Narita Hirotaka、Kominami Taro、Ueno Akiko、Tsutsumi Ryotaro、Chaya Taro、Yamamoto Haruka、Suetake Isao、Ueno Shinji、Koseki Haruhiko、Nakagawa Atsushi、Furukawa Takahisa
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 114 Issue: 39

    • DOI

      10.1073/pnas.1707021114

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 繊毛内輸送制御メカニズムと内耳における役割2018

    • Author(s)
      茶屋太郎
    • Organizer
      第2回感覚器研究イニシアチブ・シンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 網膜における脆弱X症候群関連遺伝子の機能解析2018

    • Author(s)
      茶屋太郎, 杉田祐子, 三草周平, 古川貴久
    • Organizer
      第41回 日本神経科学大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Functional roles of the Fragile X Syndrome-related gene in the retina2018

    • Author(s)
      Taro Chaya, Yuko Sugita, Hiroshi Ishikane, Takahisa Furukawa
    • Organizer
      ISER 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 網膜視細胞における繊毛内輸送を介した光受容感度調節メカニズム2018

    • Author(s)
      茶屋太郎, 堤 崚太郞, Leah Rie Varner, 古川貴久
    • Organizer
      第91回日本生化学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 網膜視細胞における明暗順応制御メカニズム2018

    • Author(s)
      茶屋太郎, 堤 崚太郞, Leah Rie Varner, 前田和, 古川貴久
    • Organizer
      第11回RRM(Retina Research Meeting)
    • Related Report
      2018 Annual Research Report
  • [Presentation] Roles of retinal horizontal and bipolar cells in visual information processing2017

    • Author(s)
      Taro Chaya, Takahisa Furukawa
    • Organizer
      The 5th Korea-Japan Joint Meeting of Clinical Electrophysiology of Vision
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] TRPM1チャネルの網膜神経回路発達における役割2017

    • Author(s)
      茶屋太郎, 小塚孝司, 田丸文信, 島田真理子, 桒原隆亮, 渡辺修一, 古川貴久
    • Organizer
      2017年度生命科学系学会合同年次大会
    • Related Report
      2017 Research-status Report
  • [Remarks] 大阪大学蛋白質研究所分子発生学研究室ホームページ

    • URL

      http://www.protein.osaka-u.ac.jp/furukawa_lab/index.html

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
  • [Patent(Industrial Property Rights)] 網膜および/または光受容に関連する症状の改善または予防用医薬ならびに網膜および/または光受容に関連する症状を改善または予防する物質のスクリーニング方法2018

    • Inventor(s)
      古川貴久、茶屋太郎
    • Industrial Property Rights Holder
      大阪大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-194648
    • Filing Date
      2018
    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi