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Investigation of the exacerbation mechanism of ocular surface inflammation caused by ocular surface epithelial barrier failure

Research Project

Project/Area Number 21K16896
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Kishimoto Tatsuma  高知大学, 教育研究部医療学系臨床医学部門, 助教 (60783751)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsアレルギー性結膜炎 / MUC16 / ブタクサ花粉 / LPS角膜炎 / マウス / ブタクサ花粉(Ragweed:RW) / ドライアイ / アレルギー性結膜疾患
Outline of Research at the Start

眼表面のバリアは角結膜の上皮細胞の上皮間結合とムチンや涙液からなる。眼表面のバリアと眼表面炎症には密接な関係性があると考えられるが、眼炎症性疾患をバリアの観点からその病態を明らかにする研究はこれまでほとんど見られない。本研究では、二種類のバリア機能障害モデル(涙腺摘出した涙液減少型ドライアイモデルおよびMUC16KOマウス)を用いて、①アレルギー性結膜炎、②自然免疫型角膜炎(LPS誘導角膜炎)を誘導して、眼表面のバリア機能の低下により眼表面の炎症に関わる細胞・分子を同定し、眼表面炎症の悪化サイクルを阻止することを目標とする。

Outline of Final Research Achievements

The barrier of the ocular surface is composed of epithelial junctions of corneal and conjunctival epithelial cells, as well as mucins and tear fluid. Diseases that compromise this barrier include dry eye disease and allergic conjunctivitis. Membrane-associated mucins, such as MUC16, may have the potential to regulate inflammation on the ocular surface. This study investigated whether MUC16 influences ocular surface inflammation caused by allergies and lipopolysaccharide (LPS) keratitis. The results showed that in MUC16-deficient mice, induction of allergic conjunctivitis by ragweed pollen led to exacerbation of clinical signs of allergy and increased scratching behavior compared to wild-type mice. Additionally, when LPS keratitis was induced, MUC16 deficiency promoted neutrophil infiltration and elevated the expression of inflammatory cytokines.

Academic Significance and Societal Importance of the Research Achievements

ドライアイと結膜アレルギーは相互に影響を与えることは臨床研究では報告されてきた。 眼表面のバリアと眼表面炎症には密接な関係性があると考えられているが、詳細な機序に関する研究はなされていない。これまでに知られていない機序について明らかになれば、学術的意義があると考えられる。疫学調査からそれぞれの疾患に罹患している患者数は2000万人以上と想定され、これらの疾患は社会活動・労働生産性を大いに妨げている。本研究から眼表面のバリア機能、炎症の両者を制御できる治療法を組み立てることができれば、社会的に大きな意義があり、その機序に即した治療法を開発し臨床応用をするための基盤になりうる重要な基礎研究である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (13 results)

All 2024 2023 2022 2021

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (6 results)

  • [Journal Article] Staphylococcus aureus-derived virulent phenol-soluble modulin α triggers alarmin release to drive IL-36-dependent corneal inflammation2024

    • Author(s)
      Nakajima Isana、Fukuda Ken、Ishida Waka、Kishimoto Tatsuma、Kuwana Aozora、Suzuki Takashi、Kaito Chikara、Yamashiro Kenji
    • Journal Title

      Microbes and Infection

      Volume: 26 Issue: 1-2 Pages: 105237-105237

    • DOI

      10.1016/j.micinf.2023.105237

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Biologics for allergy: therapeutic potential for ocular allergic diseases and adverse effects on the eye2023

    • Author(s)
      Fukuda Ken、Kishimoto Tatsuma、Sumi Tamaki、Yamashiro Kenji、Ebihara Nobuyuki
    • Journal Title

      Allergology International

      Volume: 72 Issue: 2 Pages: 234-244

    • DOI

      10.1016/j.alit.2022.09.005

    • ISSN
      1323-8930, 1440-1592
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 腸球菌性眼内炎に対する新規治療法および予防法としてのファージ療法の開発2023

    • Author(s)
      岸本達真
    • Journal Title

      日本眼科学会雑誌

      Volume: 127 Pages: 1022-1030

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Promotion of conjunctival fibroblast-mediated collagen gel contraction by mast cells through up-regulation of matrix metalloproteinase release and activation2022

    • Author(s)
      Kishimoto Tatsuma、Ishida Waka、Nakajima Isana、Taguchi Osamu、Sugioka Koji、Kusaka Shunji、Fukuda Ken
    • Journal Title

      Experimental Eye Research

      Volume: 218 Pages: 108980-108980

    • DOI

      10.1016/j.exer.2022.108980

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of Damage-Associated Molecular Patterns (DAMPs/Alarmins) in Severe Ocular Allergic Diseases2022

    • Author(s)
      Fukuda Ken、Ishida Waka、Kishimoto Tatsuma、Nakajima Isana、Miura Yusaku、Sumi Tamaki、Yamashiro Kenji
    • Journal Title

      Cells

      Volume: 11 Issue: 6 Pages: 1051-1051

    • DOI

      10.3390/cells11061051

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aqueous-Deficient Dry Eye Exacerbates Signs and Symptoms of Allergic Conjunctivitis in Mice2022

    • Author(s)
      Kishimoto Tatsuma、Ishida Waka、Nakajima Isana、Fukuda Ken、Yamashiro Kenji
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 9 Pages: 4918-4918

    • DOI

      10.3390/ijms23094918

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prophylactic and Therapeutic Effects of Oral Immunotherapy on Birch Pollen-Induced Allergic Conjunctivitis in Mice with a Rice-Based Edible Vaccine Expressing a Hypoallergenic Birch Pollen Allergen2021

    • Author(s)
      Ishida Waka、Kishimoto Tatsuma、Takaiwa Fumio、Fukuda Ken
    • Journal Title

      Cells

      Volume: 10 Issue: 12 Pages: 3361-3361

    • DOI

      10.3390/cells10123361

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 眼内レンズのバイオフィルム形成に対するバクテリオファージ療法の検討2024

    • Author(s)
      岸本達真、石田わか、桑名青空、福田 憲、山城健児
    • Organizer
      第27回眼科分子生物学研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ドライアイとアレルギー性結膜炎の相互作用の検討2024

    • Author(s)
      岸本達真
    • Organizer
      角膜カンファランス2024
    • Related Report
      2023 Annual Research Report
  • [Presentation] In vitro and in vivo evaluation of three newly isolated bacteriophage candidates, phiEF7H, phiEF14H1, phiEF19G, for treatment of Enterococcus faecalis endophthalmitis.2023

    • Author(s)
      岸本達真
    • Organizer
      第127回日本眼科学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アトピー性角結膜炎とドライアイ2023

    • Author(s)
      岸本達真
    • Organizer
      第6回日本眼科アレルギー学会 学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Promotion of conjunctival fibroblast-mediated collagen gel contraction by mast cells through up-regulation of matrix metalloproteinase release and activation.2023

    • Author(s)
      岸本達真
    • Organizer
      第6回日本眼科アレルギー学会 学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] バクテリオファージを用いた眼内炎に対する新規治療薬・予防薬の開発2023

    • Author(s)
      岸本達真
    • Organizer
      第31回眼科若手研究者の会
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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