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ocular tissue response by intraocular pressure and aqueous humor in glaucoma - investigation for the mechanism and biomarkers of intraocular pressure regulation

Research Project

Project/Area Number 20H03839
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionThe University of Tokyo

Principal Investigator

Aihara Makoto  東京大学, 医学部附属病院, 教授 (80222462)

Co-Investigator(Kenkyū-buntansha) 秋光 信佳  東京大学, アイソトープ総合センター, 教授 (40294962)
本庄 恵  東京大学, 医学部附属病院, 准教授 (60399350)
木村 麗子 (山岸麗子)  東京大学, 医学部附属病院, 特任研究員 (80704642)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Keywords緑内障 / 眼圧 / 圧受容体 / 線維柱帯 / 房水 / 生理活性脂質 / 細胞応答 / 脂質メディエーター / バイオマーカー / 機械受容体 / 圧センサー
Outline of Research at the Start

眼球組織は生涯眼圧という内圧にさらされており、眼の神経組織は慢性的にストレスを受けている。そのため、バランスが崩れると眼圧が高くなり失明原因一位の緑内障になる。眼圧は眼内独自のシステムである房水の流れによって保たれているが、何故正常値に維持されているかは不明であり、また何故眼圧が高くなるかはよく分かっていない。我々は眼の組織に圧力センサーが存在し、眼圧を制御している可能性、また圧にさらされている眼組織から房水中に出てくる物質により眼圧が高くなる可能性を考え、本研究では眼内圧力センサーとそれに関係する房水中の物質を探索し、眼圧制御のメカニズムを解明して、緑内障の原因とその治療法を目指す。

Outline of Final Research Achievements

Trabecular meshwork (TM) and retinal ganglion cells (RGC) responded to the pressure change through pressure sensors. The pressure changed TM formation via PGE2 production and RGC death. ATX, LPA and TGFβ in aqueous humor induced pressure increase and were useful for the diagnosis of subtypes of glaucoma. Two kinds of new prostanoid receptor agonists reduced the outflow resistance leading to IOP reduction. Pressure receptors, prostanoid receptors, lysophospholipids, and TGFβ relates IOP regulation and glaucoma, and can be useful for the diagnosis of glaucoma and new therapeutic targets. In addition, we established the new ocular hypertension mouse model by ATX over expression, and the new method to visualize outflow pathway in vivo. These new tools will be useful to evaluate the ocular tissue response against the drugs and pressure changes.

Academic Significance and Societal Importance of the Research Achievements

失明原因一位の緑内障の原因は眼圧による視神経乳頭障害で有り不可逆な神経変性を生じる。また唯一の治療法は眼圧下降であることから眼圧を制御することが不可欠である。本研究では眼圧による組織応答を介して眼圧制御機構の解明を目指した。新たに圧受容体を介した組織応答の存在、房水因子による眼圧上昇機構の解明と高眼圧モデルマウスの作成に成功した。改めて眼組織の圧変化に対する応答機能の存在と、眼圧上昇の房水バイオマーカーによる新たな治療標的を提案できたことから、今後の新たな緑内障の病因に迫る診断と眼圧下降および眼圧を上昇させない治療という扉を開き、緑内障による社会的損失を削減できる研究成果を得たと考える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (30 results)

All 2022 2021 2020

All Journal Article (19 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Open Access: 8 results) Presentation (11 results) (of which Invited: 1 results)

  • [Journal Article] Potential Mechanisms of Intraocular Pressure Reduction by Micropulse Transscleral Cyclophotocoagulation in Rabbit Eyes2022

    • Author(s)
      Nemoto Hotaka、Honjo Megumi、Okamoto Michiaki、Sugimoto Koichiro、Aihara Makoto
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 63 Issue: 6 Pages: 3-3

    • DOI

      10.1167/iovs.63.6.3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Newly or switching effect of a selective EP2 agonist on intraocular pressure in Japanese patients with open-angle glaucoma2022

    • Author(s)
      Ueda Koji、Sakata Rei、Fujishiro Takashi、Honjo Megumi、Shirato Shiroaki、Aihara Makoto
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: 66 Issue: 5 Pages: 434-439

    • DOI

      10.1007/s10384-022-00934-z

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fibrotic Response of Human Trabecular Meshwork Cells to Transforming Growth Factor-Beta 3 and Autotaxin in Aqueous Humor2022

    • Author(s)
      Liu Mengxuan、Honjo Megumi、Yamagishi Reiko、Igarashi Nozomi、Nakamura Natsuko、Kurano Makoto、Yatomi Yutaka、Igarashi Koji、Aihara Makoto
    • Journal Title

      Biomolecules

      Volume: 12 Issue: 9 Pages: 1231-1231

    • DOI

      10.3390/biom12091231

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 眼と脂質 眼圧制御と生理活性脂質2022

    • Author(s)
      相原 一(東京大学 医・眼科学)
    • Journal Title

      脂質生化学研究(0285-1520)64巻 Page5(2022.05)

      Volume: 64 Pages: 5-5

    • Related Report
      2022 Annual Research Report
  • [Journal Article] mTOR阻害薬によるTGF-β2添加に伴うヒト線維柱帯細胞の線維化の抑制効果の可能性2022

    • Author(s)
      五十嵐 希望(東京大学), 本庄 恵, 相原 一
    • Journal Title

      日本緑内障学会抄録集32回

      Volume: 32 Pages: 88-88

    • Related Report
      2022 Annual Research Report
  • [Journal Article] セペタプロストのマウス眼圧に及ぼす作用2022

    • Author(s)
      山岸 麗子(東京大学), 本庄 恵, 相原 一
    • Journal Title

      日本緑内障学会抄録集32回

      Volume: 32 Pages: 77-77

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 緑内障薬物治療のQCストーリー-問題解決に向けた現状把握 緑内障治療薬の創薬ターゲット 新規作用機序の眼圧下降薬開発の現状2022

    • Author(s)
      相原 一(東京大学 医学部眼科学教室)
    • Journal Title

      眼薬理

      Volume: 36

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 閾値下レーザー照射によるヒト培養網膜色素上皮由来のセラミド関連物質産生2022

    • Author(s)
      後藤 大樹(東京大学), 荒木 章之, 白矢 智靖, 上田 高志, 戸塚 清人, 外山 琢, 杉本 宏一郎, 内藤 泰幸, 阿部 均, 加藤 聡, 本庄 恵, 相原 一
    • Journal Title

      日本眼科学会雑誌126巻

      Volume: 126 Pages: 288-288

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 【脂質メディエーターの機能と疾患との関わり】生理活性脂質を介した眼疾患病態と治療2022

    • Author(s)
      相原 一(東京大学 医学部眼科学教室)
    • Journal Title

      Medical Science Digest

      Volume: 48 Pages: 20-23

    • Related Report
      2022 Annual Research Report
  • [Journal Article] The Roles Played by FP/EP3 Receptors During Pressure-lowering in Mouse Eyes Mediated by a Dual FP/EP3 Receptor Agonist2022

    • Author(s)
      Yamagishi-Kimura Reiko、Honjo Megumi、Aihara Makoto
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 63 Issue: 2 Pages: 24-24

    • DOI

      10.1167/iovs.63.2.24

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TRPV4 is activated by mechanical stimulation to induce prostaglandins release in trabecular meshwork, lowering intraocular pressure2021

    • Author(s)
      Uchida Takatoshi、Shimizu Shota、Yamagishi Reiko、Tokuoka Suzumi M.、Kita Yoshihiro、Sakata Rei、Honjo Megumi、Aihara Makoto
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 10 Pages: 0258911-0258911

    • DOI

      10.1371/journal.pone.0258911

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of selective EP2 receptor agonist, omidenepag, on trabecular meshwork cells, Schlemm’s canal endothelial cells and ciliary muscle contraction2021

    • Author(s)
      Nakamura Natsuko、Honjo Megumi、Yamagishi Reiko、Igarashi Nozomi、Sakata Rei、Aihara Makoto
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 16257-16257

    • DOI

      10.1038/s41598-021-95768-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] mTOR inhibitors potentially reduce TGF-β2-induced fibrogenic changes in trabecular meshwork cells2021

    • Author(s)
      Igarashi Nozomi、Honjo Megumi、Aihara Makoto
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 14111-14111

    • DOI

      10.1038/s41598-021-93580-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Crosstalk between transforming growth factor β-2 and Autotaxin in trabecular meshwork and different subtypes of glaucoma2021

    • Author(s)
      Igarashi Nozomi、Honjo Megumi、Yamagishi Reiko、Kurano Makoto、Yatomi Yutaka、Igarashi Koji、Kaburaki Toshikatsu、Aihara Makoto
    • Journal Title

      Journal of Biomedical Science

      Volume: 28 Issue: 1 Pages: 47-47

    • DOI

      10.1186/s12929-021-00745-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of topical TGF-β1, TGF-β2, ATX, and LPA on IOP elevation and regulation of the conventional aqueous humor outflow pathway.2021

    • Author(s)
      Nakamura N, Yamagishi R, Honjo M, Igarashi N, Shimizu S, Aihara M.
    • Journal Title

      Mol Vis.

      Volume: 27 Pages: 61-77

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanical stretch induces Ca2+ influx and extracellular release of PGE2 through Piezo1 activation in trabecular meshwork cells2021

    • Author(s)
      Uchida Takatoshi、Shimizu Shota、Yamagishi Reiko、Tokuoka Suzumi M.、Kita Yoshihiro、Honjo Megumi、Aihara Makoto
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 4044-4044

    • DOI

      10.1038/s41598-021-83713-z

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of topical TGF-ホイ1, TGF-ホイ2, ATX, and LPA on IOP elevation and regulation of the conventional aqueous humor outflow pathway2021

    • Author(s)
      Nakamura N, Yamagishi R, Honjo M, Igarashi N, Shimizu S, Aihara M.
    • Journal Title

      Molecular Vision

      Volume: 27 Pages: 61-77

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Aqueous autotaxin and TGF-βs are promising diagnostic biomarkers for distinguishing open-angle glaucoma subtypes2021

    • Author(s)
      Igarashi Nozomi、Honjo Megumi、Asaoka Ryo、Kurano Makoto、Yatomi Yutaka、Igarashi Koji、Miyata Kazunori、Kaburaki Toshikatsu、Aihara Makoto
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1

    • DOI

      10.1038/s41598-021-81048-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Involvement of autotaxin in the pathophysiology of elevated intraocular pressure in Posner-Schlossman syndrome2020

    • Author(s)
      Igarashi Nozomi、Honjo Megumi、Yamagishi Reiko、Kurano Makoto、Yatomi Yutaka、Igarashi Koji、Kaburaki Toshikatsu、Aihara Makoto
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 6265-6265

    • DOI

      10.1038/s41598-020-63284-1

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Involvement of autotaxin in the pathophysiology of elevated intraocular pressure in Posner-Schlossman syndrome2022

    • Author(s)
      五十嵐希望、山岸麗子、本庄恵、相原一
    • Organizer
      第126回日本眼科学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] IOP-lowering effect of FP/EP3 receptor agonist in mouse eye2021

    • Author(s)
      山岸麗子、本庄恵、五十嵐希望、相原一
    • Organizer
      第32回日本緑内障学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 落屑緑内障における房水中TGF-β、ATX-LPAシグナルと眼圧、重症度との相関の検討、多施設共同研究2021

    • Author(s)
      本庄恵、五十嵐希望、山岸麗子、相原一
    • Organizer
      第32回日本緑内障学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Trabecular Meshwork Scarring & ROCK inhibitors2021

    • Author(s)
      本庄恵、五十嵐希望、山岸麗子、相原一
    • Organizer
      World Glaucoma Congress 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 眼圧制御と緑内障病型におけるオートタキシン-リゾフォスファチジン酸経路およびmTORの関与2021

    • Author(s)
      五十嵐希望、山岸麗子、本庄恵、相原一
    • Organizer
      第32回日本緑内障学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] mTOR阻害薬によるTGF-β2添加に伴うヒト線維柱帯細胞の線維化の抑制効果の可能性2021

    • Author(s)
      五十嵐希望、山岸麗子、本庄恵、相原一
    • Organizer
      第32回日本緑内障学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 緑内障病型におけるTGF-β2とAutotaxinのクロストーク2021

    • Author(s)
      五十嵐希望、山岸麗子、本庄恵、相原一
    • Organizer
      第32回日本緑内障学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Aqueous autotaxin and TGF-βs are promising diagNOstic biomarkers for distinguishing open-angle glaucoma subtypes2021

    • Author(s)
      五十嵐希望、山岸麗子、本庄恵、相原一
    • Organizer
      World Glaucoma Congress 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 緑内障②おける前房水中のTGFβとautotaxinの関連2021

    • Author(s)
      五十嵐希望、本庄恵、山岸麗子、蔵野信、矢冨裕、五十嵐浩二、相原一
    • Organizer
      124回日本眼科学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 前房内因子と緑内障手術予後2021

    • Author(s)
      五十嵐希望
    • Organizer
      第31回日本緑内障学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 房水バイオマーカーによる緑内障眼圧上昇機序の解明と新規治療法の開発2021

    • Author(s)
      本庄恵
    • Organizer
      124回日本眼科学会総会
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2024-01-30  

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