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Cytoprotective effect of RPE-derived PlGF to the chorioretinal tissue

Research Project

Project/Area Number 18K16915
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionHokkaido University

Principal Investigator

Ando Ryo  北海道大学, 大学病院, 特任助教 (60399847)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords胎盤成長因子 / VEGFファミリー / 網膜色素上皮細胞 / 細胞保護 / 眼細胞生物学 / 糖尿病網膜症 / 加齢黄斑変性
Outline of Final Research Achievements

Placental growth factor (PlGF) belongs to vascular endothelial growth factor (VEGF) family proteins which participate in angiogenesis and vasculogenesis. In late years, the cytoprotective role of VEGF family molecules is recognized but the physiological role of PlGF was still unknown. In this study, the physiological role of PlGF in the retinal pigment epithelium (RPE) which is important for the homeostasis of retinal tissue was investigated, and it was demonstrated that PlGF protects VEGFR2 protein from proteasomal degradation through GSK3 inactivation. The current data indicate that PlGF protects RPE cells via stabilization of VEGFA/VEGFR-2 signaling.

Academic Significance and Societal Importance of the Research Achievements

PlGFはVEGFとともに糖尿病網膜症や滲出型加齢黄斑変性の病態形成に関わることが知られている。糖尿病網膜症と加齢黄斑変性は我が国の主要な失明原因であり、VEGFファミリー分子を阻害するVEGF 阻害剤の臨床導入はその治療成績を大きく改善した。一方、VEGFファミリーが持つ組織保護作用についての認識が近年高まっており、その長期阻害が後眼部組織に与える影響に関する検討は臨床的にも重要な課題である。本研究により、RPEから分泌されるPlGFがVEGF受容体-2の安定化を介してRPE細胞を保護することが明らかになった。

Report

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

    (12 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (11 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Clinical Features of Japanese Patients With Anti-α-enolase Antibody?Positive Autoimmune Retinopathy: Novel Subtype of Multiple Drusen2018

    • Author(s)
      Ando Ryo、Saito Wataru、Kanda Atsuhiro、Kase Satoru、Fujinami Kaoru、Sugahara Michitaka、Nakamura Yosuke、Eguchi Shuichiro、Mori Shohei、Noda Kousuke、Shinoda Kei、Ishida Susumu
    • Journal Title

      American Journal of Ophthalmology

      Volume: 196 Pages: 181-196

    • DOI

      10.1016/j.ajo.2018.08.044

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 網膜血管腫状増殖に対する光線力学的療法トリプル療法の治療実績2020

    • Author(s)
      酒井正人、安藤 亮、田中孝幸、清野有紀子、品川真有子、齋藤理幸、加瀬 諭、野田航介、石田 晋
    • Organizer
      第59回日本網膜硝子体学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Pachychoroidに伴う脈絡膜新生血管に対するPDTトリプル療法の成績2020

    • Author(s)
      安藤 亮、田中孝幸、清野有紀子、酒井正人、品川真有子、廣岡季里子、齋藤理幸、加瀬 諭、野田航介、齋藤 航、石田 晋
    • Organizer
      第74回日本臨床眼科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 長期経過観察した抗リカバリン抗体陽性非腫瘍随伴自己免疫性網膜症の1例2020

    • Author(s)
      田中孝幸、安藤 亮、神田敦宏、齋藤 航、石田 晋
    • Organizer
      第68回日本臨床視覚電気生理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Waardenburg症候群と網膜芽細胞腫を合併した13番染色体長腕部分欠失の1例2020

    • Author(s)
      赤岡さくら、安藤 亮、加瀬 諭、外木秀文、長 祐子、藤井史彦、太田 亨、石田 晋
    • Organizer
      第124回日本眼科学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] AMD診療 -新時代の幕開け-2020

    • Author(s)
      安藤 亮
    • Organizer
      第7回AMD Expert Clinical Conference
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Anti-enolase drusen: a novel subtype of autoimmune retinopathy2019

    • Author(s)
      Ando R, Saito W, Kanda A, Kase S, Fujinami K, Noda K, Shinoda K, Ishida S.
    • Organizer
      The 4th Japan-Taiwan Vitreoretinal Joint Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Anti-enolase drusen: A new subtype of autoimmune retinopathy2019

    • Author(s)
      Ando R.
    • Organizer
      Sapporo Novel Ophthalmology Workshop (SNOW)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 抗carbonic anhydrase II 抗体陽性自己免疫性網膜症の臨床像2019

    • Author(s)
      安藤 亮、齋藤 航、平形寿彬、藤波 芳、角田和繁、加瀬 諭、野田航介、神田敦宏、石田 晋
    • Organizer
      第58回日本網膜硝子体学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Clinical features of Japanese patients with anti-α-enolase antibody-positive autoimmune retinopathy: novel subtype of multiple drusen2018

    • Author(s)
      Ando R.
    • Organizer
      13th Japan-Korea International Symposium in Ophthalmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ポリープ状脈絡膜血管症に対する光線力学的療法トリプル療法の5年成績2018

    • Author(s)
      安藤 亮、野田航介、廣岡季里子、柴田有紀子、橋本勇希、鈴木智浩、清水啓史、 藤谷顕雄、董 震宇、加瀬 諭、吉澤史子、齋藤 航、石田 晋.
    • Organizer
      第57回日本網膜硝子体学会、京都
    • Related Report
      2018 Research-status Report
  • [Presentation] 抗α-enolase抗体陽性自己免疫性網膜症の網膜電図所見2018

    • Author(s)
      安藤 亮、齋藤 航、神田敦宏、加瀬 諭、藤波 芳、菅原道孝、中村洋介、江口秀一郎、野田航介、篠田 啓、石田 晋.
    • Organizer
      第66回日本臨床視覚電気生理学会、浜松
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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