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Elucidating the pathogenesis of Fuchs corneal dystrophy using disease iPSCs

Research Project

Project/Area Number 16K11300
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Shimmura Shigeto  慶應義塾大学, 医学部(信濃町), 准教授 (00235780)

Co-Investigator(Kenkyū-buntansha) 房木 ノエミ  慶應義塾大学, 医学部(信濃町), 研究員 (40278635)
羽藤 晋  慶應義塾大学, 医学部(信濃町), 特任講師 (70327542)
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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsフックス角膜変性症 / iPS細胞 / 再生医療 / 角膜内皮細胞 / フックス角膜内皮変性症 / 角膜 / 疾患iPS
Outline of Final Research Achievements

We newly established iPS cells from Fuchs’ corneal endothelial dystrophy (FECD) for the investigation of this disease. Three different SNPs were found in the TCF4 gene from our FECD patients. We derived neural crest cells (NCC) from iPSCs and sorted integrin alpha 4 and p75 NTR- double positive cells. We compared the characteristics of C-NCC (control normal donor iPS derived NCC) and F-NCC (FECD patient iPS derived NCC). Real time PCR showed the upregulation of the ER stress marker (CHOP) in F-NCC. Cornea endothelial cells derived from F-NCC also showed the upregulation of CHOP, GRP78 and XBP1 indicating that these cells are ideal for screening of potential new drugs.

Academic Significance and Societal Importance of the Research Achievements

6人の疾患iPSより、3人の日本人においてTCF4 (rs17089925), (rs17089887), CLU (rs3087554) の3箇所にSNPs変異を認め、1人のオランダ人に おいてTCF4 (rs613872), (rs2286812)の2箇所にSNPs変異を認めた。角膜内皮誘導の結果、角膜内皮の分化マーカーに関してはオランダ人株でpItx2の発現が低いなど分化抵抗性の傾向をみとめた。小胞体ストレスについて健常人iPS由来角膜内皮細胞(C-CEC)を比較した結果、オランダ人株においても、日本人株においても小胞体ストレスマーカーCHOP, GRP78, XBP1の増加を検出した。

Report

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

    (2 results)

All 2018 2017

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] UPREGULATION OF ENDOPLASMIC RETICULUM STRESS (ER STRESS) IN HUMAN IPSC DERIVED CORNEAL ENDOTHELIAL CELLS FROM PATIENTS WITH FUCHS ENDOTHELIAL CORNEAL DYSTROPHY2018

    • Author(s)
      Risa Yamazaki, Noemi Fusaki, Shin Hatou, Satoru Yoshida, Emi Inagaki, Hideyuki Okano, Kazuo Tsubota, Shigeto Shimmer
    • Organizer
      cornea and ocular surface biology and pathology Gordon Research Conference 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fuchs角膜内皮変性症由来iPS細胞を用いた小胞体ストレスの病態関与の検討2017

    • Author(s)
      山崎梨沙、房木ノエミ、羽藤晋、稲垣絵海、宮下英之、吉田悟、坪田一男、榛村重人
    • Organizer
      第41回日本角膜学会総会
    • Place of Presentation
      アクロス福岡(福岡県福岡市)
    • Year and Date
      2017-02-16
    • Related Report
      2016 Research-status Report

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

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