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Generation of animal model and functional analysis of EYS, a retinitis pigmentosa-causing gene, in zebrafish

Research Project

Project/Area Number 17K16995
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Ophthalmology
Research InstitutionNational Rehabilitation Center for Persons with Disabilities

Principal Investigator

Takita Shimpei  国立障害者リハビリテーションセンター(研究所), 研究所 感覚機能系障害研究部, 流動研究員 (90781261)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsZebrafish eys / lrp5 / rbp1 / eys-related genes / Functional analysis / Zebrafish / eys / Retinoid cycle / HDF-a / Y79 / EYS転写産物 / ドメイン構造 / ゼブラフィッシュeys / 機能ゲノミクス / 網膜色素変性 / 眼細胞生物学 / モデル動物 / ゼブラフィッシュ
Outline of Final Research Achievements

The human eyes shut homolog (EYS) gene is a major cause of retinitis pigmentosa, accounting for about 30% of all cases, in the Japanese population, however, there is currently no treatment. In this study, the grant recipient used zebrafish as an animal model by generating eys knockout (eys-/-) and analyzing function of EYS protein. Photoreceptor degeneration was observed in the mutant and expression levels of several genes were remarkably reduced.
In addition, in the digenic eys+/-; low-density lipoprotein (LDL)-related receptor-5 (lrp5)+/- eye, expression level of retinol binding protein 1 (rbp1), the protein important for the retinoid cycle, was remarkably reduced.

Academic Significance and Societal Importance of the Research Achievements

ヒトeyes shut homolog (EYS)遺伝子は、日本人常染色体潜性網膜色素変性の約3割を占める主要原因である。本研究によりゼブラフィッシュeys-/-眼球で確かに視細胞変性が観察されたことから、ヒトでの遺伝子解析結果が裏付けられた。
そして、ヒトとゼブラフィッシュとでEYSの転写産物を詳細に解析し主要な発現転写産物を明らかにすることで、遺伝子解析・治療、機能解析の基盤を整えた。
また、これまで網膜色素上皮におけるall-trans retinolの取り込みは良く分かっていなかったが、2遺伝子性eys+/-; lrp5+/-を解析することで、LRP5が関与する可能性が強く示唆された。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Intra- and interspecies comparison of EYS transcripts highlights its characteristics in the eye2019

    • Author(s)
      Shimpei Takita, Kiyoko Miyamoto-Matsui, Yuko Seko
    • Journal Title

      The FASEB Journal

      Volume: 印刷中 Issue: 8 Pages: 9422-9433

    • DOI

      10.1096/fj.201900056rr

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] The manner of decay of genetically defective EYS gene transcripts in photoreceptor-directed fibroblasts derived from retinitis pigmentosa patients depends on the type of mutation2018

    • Author(s)
      Yuko Seko, Masaki Iwanami, Kiyoko Miyamoto-Matsui, Shimpei Takita, Noriyuki Aoi, Akihiro Umezawa, Seishi Kato
    • Journal Title

      Stem Cell Research & Therapy

      Volume: 9(1) Issue: 1

    • DOI

      10.1186/s13287-018-1016-9

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] rbp1 gene plays a role downstream of lrp5 gene in the zebrafish eye.2020

    • Author(s)
      Shimpei Takita, Yuko Seko
    • Organizer
      2020 ARVO Annual Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 種内および種間での転写産物比較により明らかになる眼球に発現するEYSの特徴2019

    • Author(s)
      瀧田真平、宮本-松井潔子、世古裕子
    • Organizer
      第39回比較眼科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Intra- and interspecies comparison of EYS transcripts highlights its characteristics in the eye.2019

    • Author(s)
      瀧田真平、宮本-松井潔子、世古裕子
    • Organizer
      第21回日本進化学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ヒト・ゼブラフィッシュを用いた転写産物比較により明らかになった眼球におけるEYSの特徴2019

    • Author(s)
      瀧田真平、世古裕子
    • Organizer
      第12回 Retina Research Meeting
    • Related Report
      2019 Annual Research Report
  • [Presentation] Remarkable decrease of rbp1 expression as hallmark of zebrafish eye with digenic eys+/-; lrp5+/- retinitis pigmentosa-candidate mutations.2019

    • Author(s)
      Shimpei Takita, Yuko Seko
    • Organizer
      2019 ARVO Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 2遺伝子性eys+/-; lrp5+/-ゼブラフィッシュ眼球の網羅的遺伝子発現解析2018

    • Author(s)
      瀧田真平、世古裕子
    • Organizer
      第11回 Retina Research Meeting
    • Related Report
      2018 Research-status Report
  • [Presentation] Global gene expression analysis of zebrafish eye with digenic eys+/-; lrp5+/- retinitis pigmentosa-candidate mutations.2018

    • Author(s)
      Shimpei Takita, Yuko Seko
    • Organizer
      XXIII Biennial Meeting of the International Society for Eye Research
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Insights into EYS protein function(s) by deciphering the novel transcripts expressed in human dermal fibroblasts and zebrafish eye.2018

    • Author(s)
      Shimpei Takita, Kiyoko Miyamoto-Matsui, Yuko Seko
    • Organizer
      2018 ARVO Annual Meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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