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A new mechanism of the complement system pathway derived from the retinal pigment epithelium in subretinal fibrosis.

Research Project

Project/Area Number 20K09805
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionYamaguchi University

Principal Investigator

Kimura Kazuhiro  山口大学, 大学院医学系研究科, 教授 (60335255)

Co-Investigator(Kenkyū-buntansha) 林 謙一郎  山口大学, 医学部附属病院, 学術研究員 (90238105)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords網膜硝子体疾患 / 線維化 / 網膜色素上皮 / 補体 / レチノイン酸シグナル / 細胞外基質 / 滲出性加齢黄斑変性 / 慢性炎症 / レチノイン酸 / nAMD / RPE / RAR
Outline of Research at the Start

nAMDは、網脈絡膜に存在する新生血管からの出血や滲出性変化の結果、視機能低下をきたす疾患である。抗VEGF薬の硝子体投与で治療効果が得られるようになったが、二次的に形成された網膜下の線維化が視力予後に多大な影響をもたらす。網膜下線維組織形成の病態においてRPEが重要な役割を果たし、網膜下での局所的な慢性炎症も線維化に大きく寄与する。本研究では、線維化のプロセスでのRPEにおける炎症関連因子である補体因子群の作用を解明する。さらに線維化に関与するレチノイン受容体(RAR)-γ経路とのクロストークを検討し、新たな線維化の分子メカニズムを解明する。最終的に新たな線維化抑制の標的を見出し、新規治療薬の開発につなげる。

Outline of Final Research Achievements

Neovascular age-related macular degeneration (nAMD) is a disease that affects visual function due to the disruption of neovascular vessels arising from the choroid. Subretinal fibrotic tissue forms after neovascular regression and affects visual function. Epithelial-mesenchymal transition (EMT) of retinal pigment epithelial cells (RPE) with local inflammation contributes to the formation of subretinal fibrous tissue. Complement plays an important role in biological defense and local inflammation. In the present study, the expression of complement C5 and the matricellular protein thrombospondin was upregulated in TGF-β2-induced EMT in RPE, and their increased expression was significantly suppressed by α and γ-retinoic acid receptor agonists.

Academic Significance and Societal Importance of the Research Achievements

nAMDでは網膜下線維組織形成がnAMDの長期的な視力障害の原因の1つである。RPEを起点としたEMT形成、組織収縮に伴い補体C5の発現上昇を見出したことから、補体が網膜下線維組織形成に関与する可能性を示唆した。同時に、マトリセルラー分子のThrombospondinの発現量も亢進することから、新たな細胞外基質の関与を明らかにした。今回の研究結果は、網膜下線維組織形成の新たな分子機序を示唆することから学術的意義は高い。これらの結果は、網膜下線維組織形成のみならず、他の難治性増殖性網膜硝子体疾患の予防、治療に対して新たな標的および指針を与えるものであり、社会的な意義の高い成果である。

Report

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

    (28 results)

All 2022 2021 2020 2019

All Journal Article (17 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 13 results,  Open Access: 12 results) Presentation (11 results) (of which Invited: 4 results)

  • [Journal Article] PRELP Regulates Cell-Cell Adhesion and EMT and Inhibits Retinoblastoma Progression2022

    • Author(s)
      Hopkins Jack、Asada Ken、Leung Alex、Papadaki Vasiliki、Davaapil Hongorzul、Morrison Matthew、Orita Tomoko、Sekido Ryohei、Kosuge Hirofumi、Reddy M. Ashwin、Kimura Kazuhiro、Mitani Akihisa、Tsumoto Kouhei、Hamamoto Ryuji、Sagoo Mandeep S.、Ohnuma Shin-ichi
    • Journal Title

      Cancers

      Volume: 14 Issue: 19 Pages: 4926-4926

    • DOI

      10.3390/cancers14194926

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of corneal hysteresis after pars plana vitrectomy combined phacoemulsification and intraocular lens implantation2022

    • Author(s)
      Ohta Manami、Wakuta Makiko、Sakuma Ayano、Hasegawa Mina、Hamada Waka、Higashijima Fumiaki、Yoshimoto Takuya、Ogata Tadahiko、Kobayashi Yuka、Kimura Kazuhiro
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1

    • DOI

      10.1038/s41598-022-18299-1

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Increased vitreous levels of B cell activation factor (BAFF) and soluble interleukin-6 receptor in patients with macular edema due to uveitis related to Beh?et’s disease and sarcoidosis2022

    • Author(s)
      Takeda Atsunobu、Hasegawa Eiichi、Yawata Nobuyo、Notomi Shoji、Ishikawa Keijiro、Murakami Yusuke、Hisatomi Toshio、Kimura Kazuhiro、Sonoda Koh-Hei
    • Journal Title

      Graefe's Archive for Clinical and Experimental Ophthalmology

      Volume: -

    • DOI

      10.1007/s00417-022-05600-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Retinal Pigment Epithelial Detachment Associated with Immunoglobulin A Nephropathy: A Case Report2022

    • Author(s)
      Sakuma Ayano、Ogata Tadahiko、Wakuta Makiko、Orita Tomoko、Kimura Kazuhiro
    • Journal Title

      Case Reports in Ophthalmology

      Volume: 13 Issue: 3 Pages: 834-841

    • DOI

      10.1159/000526543

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Simultaneous Vitreoretinal Surgery and Sclerokeratoplasty for Keratoglobus with Intraocular Hemorrhage and Extensive Corneal Rupture2022

    • Author(s)
      Higashijima Fumiaki、Aoki Ren、Mikuni Masanori、Yoshimoto Takuya、Iwamoto Nanako、Ohta Manami、Ogata Tadahiko、Yamada Naoyuki、Kimura Kazuhiro
    • Journal Title

      Case Reports in Ophthalmology

      Volume: 13 Issue: 1 Pages: 220-226

    • DOI

      10.1159/000522282

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Surgical resection of intraorbital metastasis of a gastrointestinal stromal tumor resistant to chemotherapy2022

    • Author(s)
      Mikuni Masanori、Wakuta Makiko、Masaki Tatsuya、Hirose Yoshinobu、Takasu Hiroyuki、Kawano Hiroo、Aoki Ren、Ota Manami、Kimura Kazuhiro
    • Journal Title

      American Journal of Ophthalmology Case Reports

      Volume: 25 Pages: 101353-101353

    • DOI

      10.1016/j.ajoc.2022.101353

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impact of the COVID-19 Pandemic on Anti-Vascular Endothelial Growth Factor Therapy for Diabetic Macular Edema in Japan2022

    • Author(s)
      Komori R, Takamura Y, Yamada Y, Morioka M, Matsubara H, Hirano T, Mitamura Y, Shimizu M, Kusuhara S, Murakami T, Nihei R, Ueda T, Kunikata H, Jujo T, Terasaki H, Nagasato D, Noda K, Osaka R, Nagai K, Yoshida S, Nozaki M, Noma H, Ishigooka G, Takahashi A, Sawada O, Kimura K, Inatani M.
    • Journal Title

      Journal of Clinical Medicine

      Volume: 11 Issue: 22 Pages: 6794-6794

    • DOI

      10.3390/jcm11226794

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Evaluation of microaneurysms as predictors of therapeutic response to anti-VEGF therapy in patients with DME2022

    • Author(s)
      Hatano M,Higashijima F,Yoshimoto T,Ogata T,Ohta M,Kobayashi Y,Wakuta M,Yanai R,Kimura K
    • Journal Title

      PLoS One

      Volume: 17 Issue: 11 Pages: e0277920-e0277920

    • DOI

      10.1371/journal.pone.0277920

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Risk Factors for Legal Blindness in 77 Japanese Patients with Endogenous Endophthalmitis: A Multicenter Cohort Study from J-CREST2022

    • Author(s)
      Sugisawa Takaaki、Ishikawa Hiroto、Uchida Kazutaka、(Kondo Mineo)、et al
    • Journal Title

      Ocular Immunology and Inflammation

      Volume: - Issue: 7 Pages: 1-8

    • DOI

      10.1080/09273948.2022.2112237

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 36.Treatment of diabetic macular edema in real-world clinical practice: the effect of aging.2022

    • Author(s)
      Japan Clinical Retina Study (J-CREST) group
    • Journal Title

      Journal of Diabetes Investigation

      Volume: 1 Issue: 8 Pages: 1-8

    • DOI

      10.1111/jdi.13801

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simultaneous vitreoretinal surgery and sclerokeratoplasty for keratoglobus with intraocular hemorrhage and extensive corneal rupture2021

    • Author(s)
      Aoki R,Mikuni M,Yoshimoto T,Iwamoto N,Ohta M,Ogata T,Yamada N,Kimura K
    • Journal Title

      Case Rep Ophthalmol

      Volume: 12 Issue: 3 Pages: 841-847

    • DOI

      10.1159/000518289

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Benzalkonium chloride-induced myofibroblastic transdifferentiation of Tenon’s capsule fibroblasts is inhibited by coculture with corneal epithelial cells or by interleukin-102021

    • Author(s)
      Yamashiro C,Tokuda K,Kobayashi Y,Higashijima F,Yoshimoto T,Ohta M,Ogata T,Ashimori A,Kobayashi M,Hatano M,Uchi SH,Wakuta M,Kimura K
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 16096-16096

    • DOI

      10.1038/s41598-021-94852-8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibition of epithelial-mesenchymal transition in retinal pigment epithelial cells by a retinoic acid receptor-α agonist2021

    • Author(s)
      Kobayashi Y,Tokuda K,Yamashiro C,Higashijima F,Yoshimoto T,Ohta M,Ogata T,Ashimori A,Hatano M,Kobayashi M,Uchi SH,Wakuta M,Kimura K
    • Journal Title

      Sci Rep

      Volume: 11 Issue: 1 Pages: 11842-11842

    • DOI

      10.1038/s41598-021-90618-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Early manifestations and differential gene expression associated with photoreceptor degeneration in Prom1-deficient retina2021

    • Author(s)
      Kobayashi Y,Watanabe S,Ong ALC,Shirai M,Yamashiro C,Ogata T,Higashijima F,Yoshimoto T,Hayano T,Asai Y,Sasai N,Kimura K
    • Journal Title

      Dis Model Mech

      Volume: 14 Issue: 11

    • DOI

      10.1242/dmm.048962

    • NAID

      120007185295

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A needle-type biofuel cell using enzyme/mediator/carbon nanotube composite fibers for wearable electronics2020

    • Author(s)
      Yin S,Liu X,Kobayashi Y,Nishina Y,Nakagawa R,Yanai R,Kimura K,Miyake T
    • Journal Title

      Biosens Bioelectron

      Volume: 165 Pages: 112287-112287

    • DOI

      10.1016/j.bios.2020.112287

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Real-world management of treatment-naive diabetic macular oedema: 2-year visual outcome focusing on the starting year of intervention from STREAT-DMO study2019

    • Author(s)
      Shimura M, Kitano S, Muramatsu D, Fukushima H, Takamura Y, Matsumoto M, Kokado M, Kogo J, Sasaki M,
    • Journal Title

      Br J Ophthalmol

      Volume: - Issue: 12 Pages: 1755-1761

    • DOI

      10.1136/bjophthalmol-2019-315726

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Real-world management of treatment-naive diabetic macular edema in Japan: Two-year visual outcomes with and without anti-VEGF therapy in the STREAT-DME study2019

    • Author(s)
      Shimura M, Kitano S, Muramatsu D, Fukushima H, Takamura Y, Matsumoto M, Kokado M, Kogo J, Sasaki M
    • Journal Title

      Br J Ophthalmol

      Volume: - Issue: 9 Pages: 1209-1215

    • DOI

      10.1136/bjophthalmol-2019-315199

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 「感染性角膜炎再発時診断表」の作成2022

    • Author(s)
      山田 直之, 和才 友紀,岩本 菜奈子,永井 智彦,守田 裕希子,木村 和博
    • Organizer
      第76回日本臨床眼科学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パクリタキセルの関与が疑われた難治性糖尿病黄斑浮腫の1例2022

    • Author(s)
      佐久間 彩乃, 波多野 誠,東島 史明,太田 真実,緒方 惟彦,小林 由佳,湧田 真紀子,木村 和博
    • Organizer
      第28回日本糖尿病眼学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 当院における未熟児網膜症に対するラニビズマブ硝子体注射による治療成績の検討2022

    • Author(s)
      太田 真実, 山城 知恵美,東島 史明,濱田 和花,湧田 真紀子,木村 和博
    • Organizer
      第61回日本網膜硝子体学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 網膜剥離を合併した角膜混濁を有する瘢痕期未熟児網膜症の成人例2021

    • Author(s)
      木村 和博
    • Organizer
      内視鏡研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 眼皮膚白皮症に増殖糖尿病網膜症を発症した1症例2021

    • Author(s)
      木村 和博
    • Organizer
      第30回New-VitQの会in Miyazaki
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 多施設共同後ろ向き研究におけるポリープ状脈絡膜血管症の治療成績2021

    • Author(s)
      澤田 智子,安川 力,松原 央,今泉 寛子,石川 裕人,木村 和博,寺崎 寛人,三田村 佳典,村上 智哉,村田 敏規,水澤 裕太郎,竹内 大,高村 佳弘,向後 二郎,大路 正人
    • Organizer
      第60回日本網膜硝子体学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] 網膜色素変性症におけるグリオーシス形成の分子機序解明と新規治療薬の開発2021

    • Author(s)
      木村 和博
    • Organizer
      世界網膜の日 in 岩手 JRPS第25回研究助成授賞式
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] DME治療を科学する2021

    • Author(s)
      木村 和博
    • Organizer
      奈良県県立医科大学眼科同窓会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 無硝子体眼の治療抵抗性糖尿病黄斑浮腫に対してt-PA硝子体注射が有用であった一例2020

    • Author(s)
      青木 連,波多野 誠,緒方 惟彦,湧田 真紀子,柳井 亮二,木村 和博
    • Organizer
      第74回日本臨床眼科学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 網膜前駆細胞活性化におけるピルビン酸キナーゼM2アイソフォームの機能2020

    • Author(s)
      徳田 和央,山城 知恵美,小林 由佳,波多野 誠,小林 正明,藏滿 保宏,寺西 慎一郎,山田 直之,柳井 亮二,木村 和博
    • Organizer
      第124回日本眼科学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] RAR-α agonistによるsubretinal fibrosisの抑制作用2020

    • Author(s)
      小林 由佳,山城 知恵美,小林 正明,波多野 誠,徳田 和央,柳井 亮二,木村 和博
    • Organizer
      第124回日本眼科学会総会
    • Related Report
      2020 Research-status Report

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

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