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

Development of a novel treatment strategy based on the oles of sphingosine-1- phosphate in EMT-related ocular tissue fibrosis

Research Project

Project/Area Number 17K11464
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ophthalmology
Research InstitutionWakayama Medical University

Principal Investigator

Saika shizuya  和歌山県立医科大学, 医学部, 教授 (40254544)

Co-Investigator(Kenkyū-buntansha) 住岡 孝吉  和歌山県立医科大学, 医学部, 准教授 (40433362)
田中 才一  和歌山県立医科大学, 医学部, 准教授 (60316106)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsスフィンゴシン・1リン酸 / 水晶体上皮細胞 / 角膜内皮 / 上皮—間葉系移行 / 線維・瘢痕化 / 後発白内障 / 創傷治癒 / マウス / 水晶体上皮 / 上皮ー間葉系移行 / 筋線維芽細胞 / スフィンゴシン・1リン酸受容体 / トランスフォーミング成長因子 / 角膜創傷治癒 / スフィンゴシンー1ーリン酸受容体 / 上皮-間葉系移行 / 炎症 / スフィンゴシン・1リン酸受容体3型 / スフィンゴシン・1リン酸受容体2型 / 増殖硝子体網膜症
Outline of Final Research Achievements

In this study, we focused on whether the sphingosine monophosphate (S1P) signal, a cell membrane sphingolipid metabolite, is involved in the regulation of epithelial-mesenchymal transition in tissue fibers and scarring. As a model of aftercataract, EMT of lens epithelial cells in lens perforation trauma was examined. In an S1P receptor type 3 deficient mouse, the initiation of smooth muscle actin expression, an EMT marker, was delayed. The endothelium-mesenchymal transition, EnMT, of the corneal endothelium was used to investigate fibrosis of the endothelial surface. When mouse corneal alkaline trauma was created with 1N NaOH, fibrotic lesions were formed on the endothelial surface by EnMT of the endothelial cells. The degree of corneal endothelium EnMT and fibrosis were similar to each other between wild-type and S1P3 receptor-deficient mice.

Academic Significance and Societal Importance of the Research Achievements

臨床的に水晶体上皮細胞のEMTは白内障手術で挿入された眼内レンズ周囲の残存水晶体嚢の線維性混濁(後発白内障)による視力低下や眼内レンズの変位の原因である。今研究では後発白内障の発症機序にS1Pシグナルが関与していることが明らかとなった。S1Pシグナル阻害による予防効果が示唆された。一方、角膜内皮細胞のEnMTによる線維性病変の形成は、高度の角膜炎症疾患や炎症に合併する。同病変の形成にはS1PR3シグナルの関与が少ないことが示唆された。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018 2017

All Journal Article (10 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 10 results,  Open Access: 9 results) Presentation (1 results)

  • [Journal Article] Loss of sphingosine 1-phosphate receptor 3 gene function impairs injury-induced stromal angiogenesis in mouse cornea2021

    • Author(s)
      Yasuda S, Sumioka T, Iwanishi H, Okada Y, Miyajima M, Ichikawa K, Reinach PS, Saika S.
    • Journal Title

      Laboratory Investigation

      Volume: 101 Issue: 2 Pages: 245-257

    • DOI

      10.1038/s41374-020-00505-1

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inhibition of Rho kinase suppresses capsular contraction following lens injury in mice2020

    • Author(s)
      Tanaka Sai-Ichi、Ichikawa Kana、Miyajima Masayasu、Okada Yuka、Saika Shizuya
    • Journal Title

      Taiwan Journal of Ophthalmology

      Volume: 10 Issue: 2 Pages: 100-105

    • DOI

      10.4103/tjo.tjo_80_19

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Alteration of expression pattern of transient receptor potential vanilloid 2 and transient receptor potential vanilloid 3 in ocular surface neoplasm2020

    • Author(s)
      Ai Izutani-Kitano , Yuka Okada , Kana Ichikawa , Peter Sol Reinach , Shizuya Saika
    • Journal Title

      Taiwan J Ophthalmol.

      Volume: 10(2) Issue: 2 Pages: 106-110

    • DOI

      10.4103/tjo.tjo_12_20

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of a prostaglandin F2alpha derivative glaucoma drug on EGF expression and E-cadherin expression in a corneal epithelial cell line.2020

    • Author(s)
      Takada Y, Yamanaka O, Okada Y, Sumioka T, Reinach PS, Saika S.
    • Journal Title

      Cutan Ocul Toxicol.

      Volume: 6 Issue: 2 Pages: 1-8

    • DOI

      10.1080/15569527.2020.1722152

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transient receptor potential ion channel family has come on to the front stage in the eye research field2020

    • Author(s)
      Shizuya Saika
    • Journal Title

      Taiwan J Ophthalmol.

      Volume: 10(2) Issue: 2 Pages: 77-79

    • DOI

      10.4103/tjo.tjo_14_20

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Case of Repeating Transient Increase in Intraocular Pressure by Instability of an Intraocular Lens Implanted in the Capsular Bag.2020

    • Author(s)
      Takada Y, Sumioka T, Ishikawa N, Yasuda S, Komori R, Saika S.
    • Journal Title

      Case Rep Ophthalmol.

      Volume: 11 Issue: 1 Pages: 60-67

    • DOI

      10.1159/000505597

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sensory nerve supports epithelial stem cell function in healing of corneal epithelium in mice: the role of trigeminal nerve transient receptor potential vanilloid 4.2019

    • Author(s)
      Okada Y, Sumioka T, Ichikawa K, Sano H, Nambu A, Kobayashi K, Uchida K, Suzuki Y, Tominaga M, Reinach PS, Hirai SI, Jester JV, Miyajima M, Shirai K, Iwanishi H, Kao WW, Liu CY, Saika S.
    • Journal Title

      Lab Invest.

      Volume: 99(2) Issue: 2 Pages: 210-230

    • DOI

      10.1038/s41374-018-0118-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Suppression of neovascularization in corneal stroma in a TRPA1-null mouse.2019

    • Author(s)
      Usui-Kusumoto K, Iwanishi H, Ichikawa K, Okada Y, Sumioka T, Miyajima M, Liu CY, Reinach PS, Saika S.
    • Journal Title

      Exp Eye Res.

      Volume: 181 Pages: 90-97

    • DOI

      10.1016/j.exer.2019.01.002

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lack of plakoglobin impairs integrity and wound healing in corneal epithelium in mice.2018

    • Author(s)
      Kokado M, Miyajima M, Okada Y, Ichikawa K, Yamanaka O, Liu CY, Kao WW, Shou W, Saika S.
    • Journal Title

      Laboratory Investigation

      Volume: 98 Issue: 11 Pages: 1375-1383

    • DOI

      10.1038/s41374-018-0082-z

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impaired healing of cornea incision injury in a TRPV1-deficient mouse.2018

    • Author(s)
      Nidegawa-Saitoh Y, Sumioka T, Okada Y, Reinach PS, Flanders KC, Liu CY, Yamanaka O, Kao WW, Saika S.
    • Journal Title

      Cell Tissue Res.

      Volume: 374(2) Issue: 2 Pages: 329-338

    • DOI

      10.1007/s00441-018-2878-y

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] スフィンゴシン-1-リン酸トランスポーターSpns2ノックアウトマウスでの眼瞼形成不全2017

    • Author(s)
      森井智也、住岡孝吉、宮嶋正康、望月直樹、雑賀司珠也
    • Organizer
      第121回日本眼科学会総会
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi