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Investigation of the effects of PSMalpha and phage therapy in Staphylococcus aureus keratitis

Research Project

Project/Area Number 21K09744
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Fukuda Ken  高知大学, 教育研究部医療学系臨床医学部門, 准教授 (70335751)

Co-Investigator(Kenkyū-buntansha) 松崎 茂展  高知学園大学, 健康科学部, 教授 (00190439)
石田 わか  高知大学, 医学部, 特任助教 (40761705)
岸本 達真  高知大学, 医学部附属病院, 特任助教 (60783751)
鈴木 崇  東邦大学, 医学部, 准教授(寄付講座) (70398048)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsフェノール可溶性モジュリンα / 黄色ブドウ球菌 / メチシリン耐性黄色ブドウ球菌 / 角膜炎 / IL-36 / アラーミン / phenol-soluble modulin α / ブドウ球菌 / psm-α / DAMPs / 感染症 / 眼内炎
Outline of Research at the Start

今日眼科領域で広くみられるメチシリン耐性黄色ブドウ球菌(MRSA)の強毒化の原因を解明するために、psm-α毒素を産生する菌と産生しない菌を用いて、眼組織の細胞への毒性や惹起する炎症の差違を検討すると共に、動物モデルにより眼の機能への影響を検討する。
さらに、新しい治療法を開発するために、細菌を溶解するウイルス、バクテリオファージを用いて病原性増強型MRSAによる眼感染症に対して治療効果を検討する。

Outline of Final Research Achievements

The role of phenol-soluble modulin (PSM) α in keratitis was investigated using PSMα-producing and PSMα-deficient Staphylococcus aureus. Supernatants of PSMα-producing strains damaged corneal epithelial and parenchymal cells and released the allamins IL-1α and IL-36. In corneal organ cultures, supernatants of PSMα-producing strains stimulated corneal epithelial thinning, release of IL-1α and IL-36α, and expression of inflammatory chemokines. In a mouse model of keratitis, PSMα-producing strains or their supernatants induced delayed epithelial wound healing and inflammation. These effects were suppressed by eye drops of an IL-36 receptor antagonist. These results suggest that PSMα is an important factor in the triggering of IL-36-dependent inflammation in Staphylococcus aureus keratitis.

Academic Significance and Societal Importance of the Research Achievements

メチシリン耐性黄色ブドウ球菌(MRSA)による角膜潰瘍患者からは、フェノール可溶性モジュリンα(PSMα)を多量に産生する株が検出される事が報告されている。今回の我々の検討により、PSMαが角膜のブドウ球菌感染で角膜上皮の創傷治癒を遅延させると同時に炎症を惹起させる重要な因子であることが示された。さらにこれらの作用はIL-36依存性であることが明らかとなった。これらの結果よりMRSAおよびブドウ球菌角膜炎においてPSMαやIL-36が新規治療標的となることが示唆され、今後の新規治療薬の開発に寄与すると考えられる。

Report

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

    (28 results)

All 2024 2023 2022 2021

All Journal Article (24 results) (of which Peer Reviewed: 19 results,  Open Access: 13 results) Presentation (4 results) (of which Int'l Joint Research: 1 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] Exaggerated Immune Response to Fungal Keratitis Post-COVID-19 Vaccination2024

    • Author(s)
      Nakajima Isana、Fukuda Ken、Sumi Tamaki、Yamashiro Kenji
    • Journal Title

      Asia-Pacific Journal of Ophthalmology

      Volume: - Issue: 3 Pages: 100063-100063

    • DOI

      10.1016/j.apjo.2024.100063

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cavernous Hemangioma of the Retina and Brain2023

    • Author(s)
      Kayo Sugiura, Ken Fukuda, Kenji Yamashiro
    • Journal Title

      Ophthalmology

      Volume: - Issue: 12 Pages: 1473-1473

    • DOI

      10.1016/j.ophtha.2023.10.024

    • 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
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [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 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intracameral Bacteriophage Injection as Postoperative Prophylaxis for Enterococcus faecalis Induced Endophthalmitis After Cataract Surgery in Rabbits2022

    • Author(s)
      Kishimoto Tatsuma、Ishida Waka、Nakajima Isana、Ujihara Takako、Suzuki Takashi、Uchiyama Jumpei、Matsuzaki Shigenobu、Fukuda Ken
    • Journal Title

      Translational Vision Science & Technology

      Volume: 11 Issue: 4 Pages: 2-2

    • DOI

      10.1167/tvst.11.4.2

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Missing Orbital Bones in a Patient with Granulomatosis with Polyangiitis2022

    • Author(s)
      Nakajima Isana、Fukuda Ken、Yamashiro Kenji
    • Journal Title

      Ophthalmology

      Volume: 129 Issue: 12 Pages: 1401-1401

    • DOI

      10.1016/j.ophtha.2022.04.014

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Long-term follow-up of a case of Coats disease in a 10-year-old boy with spontaneous peeling of preretinal macular fibrosis: a case report2022

    • Author(s)
      Mizobuchi Tomoka、Nishiuchi Takashi、Miura Yusaku、Fukuda Ken
    • Journal Title

      BMC Ophthalmology

      Volume: 22 Issue: 1

    • DOI

      10.1186/s12886-022-02414-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atypical conjunctival hyaline deposition in a case of granular corneal dystrophy type 22022

    • Author(s)
      Kumada Minori、Sumi Tamaki、Iguchi Mitsuko、Yamada Naoyuki、Fukuda Ken、Yamashiro Kenji
    • Journal Title

      American Journal of Ophthalmology

      Volume: 240 Pages: e1-e2

    • DOI

      10.1016/j.ajo.2022.04.012

    • 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] Sequential Involvement of Oculomotor Nerve and Optic Nerve Sheath in Relapsing Polychondritis2022

    • Author(s)
      Ikeda Toshihide、Yoshida Takeshi、Yamamoto Hirotaka、Hashida Masatsugu、Urabe Kimiaki、Sotozono Chie、Fukuda Ken
    • Journal Title

      Journal of Neuro-Ophthalmology

      Volume: 42 Issue: 2 Pages: e497-e499

    • DOI

      10.1097/wno.0000000000001321

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Therapeutic potential of the interleukin-4/interleukin-13 inhibitor dupilumab for treating IgG4-related disease2022

    • Author(s)
      Nakajima Isana、Taniguchi Yoshinori、Tsuji Hideki、Mizobuchi Tomoka、Fukuda Ken
    • Journal Title

      Rheumatology

      Volume: 61 Issue: 6 Pages: e151-e153

    • DOI

      10.1093/rheumatology/keab950

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bilateral Multiple Primary Cysts of the Iris Pigment Epithelium Occluding Pupil2022

    • Author(s)
      Nakajima Isana、Tsuji Hideki、Mizobuchi Tomoka、Fukuda Ken
    • Journal Title

      Asia-Pacific Journal of Ophthalmology

      Volume: 11 Issue: 5 Pages: 489-489

    • DOI

      10.1097/apo.0000000000000462

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Executive summary: Japanese guidelines for allergic conjunctival diseases 20212022

    • Author(s)
      Miyazaki Dai、Fukushima Atsuki、Uchio Eiichi、Shoji Jun、Namba Kenichi、Ebihara Nobuyuki、Takamura Etsuko、Fukuda Ken、Matsuda Akira、Okamoto Shigeki、Fukagawa Kazumi、Fujishima Hiroshi、Ohno Shigeaki、Ohashi Yuichi
    • Journal Title

      Allergology International

      Volume: 71 Issue: 4 Pages: 459-471

    • DOI

      10.1016/j.alit.2022.07.005

    • ISSN
      1323-8930, 1440-1592
    • Related Report
      2022 Research-status Report
    • Open Access
  • [Journal Article] PHARMACOTHERAPY FOR VERNAL KERATOCONJUNCTIVITIS2022

    • Author(s)
      福田 憲
    • Journal Title

      Japanese Journal of Allergology

      Volume: 71 Issue: 5 Pages: 359-364

    • DOI

      10.15036/arerugi.71.359

    • ISSN
      0021-4884, 1347-7935
    • Related Report
      2022 Research-status Report
  • [Journal Article] 眼科アレルギー疾患アップデート デュピルマブとアレルギー性結膜疾患2022

    • Author(s)
      福田 憲、岸本達真
    • Journal Title

      Monthly Book OCULISTA

      Volume: 116 Pages: 47-52

    • Related Report
      2022 Research-status Report
  • [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
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pivotal Role of Corneal Fibroblasts in Progression to Corneal Ulcer in Bacterial Keratitis2021

    • Author(s)
      Nishida Teruo、Sugioka Koji、Fukuda Ken、Murakami Junko
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 16 Pages: 8979-8979

    • DOI

      10.3390/ijms22168979

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ocular Involvement in Relapsing Polychondritis2021

    • Author(s)
      Fukuda K, Mizobuchi T, Nakajima I, Kishimoto T, Miura Y, Taniguchi Y
    • Journal Title

      Journal of Clinical Medicine

      Volume: 10 Issue: 21 Pages: 4970-4970

    • DOI

      10.3390/jcm10214970

    • Related Report
      2021 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
  • [Journal Article] Outcomes of flanged IOL fixation combined with microhook trabeculotomy2021

    • Author(s)
      Miura Yusaku、Fukuda Ken、Fukushima Atsuki
    • Journal Title

      International Ophthalmology

      Volume: 42 Issue: 3 Pages: 799-804

    • DOI

      10.1007/s10792-021-02045-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical profile and visual outcome of intraocular inflammation associated with cat-scratch disease in Japanese patients2021

    • Author(s)
      Fukuda Ken、Mizobuchi Tomoka、Kishimoto Tatsuma、Miura Yusaku、Nishiuchi Takashi、Yoshida Kazuyuki、Fukushima Atsuki
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: 65 Issue: 4 Pages: 506-514

    • DOI

      10.1007/s10384-021-00835-7

    • NAID

      40022621274

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 眼感染症に対するバクテリオファージ療法2021

    • Author(s)
      岸本達真、福田 憲
    • Journal Title

      あたらしい眼科

      Volume: 38 Pages: 489-494

    • Related Report
      2021 Research-status Report
  • [Journal Article] ファージを用いた 細菌性眼内炎治療2021

    • Author(s)
      岸本達真、福田 憲
    • Journal Title

      臨床眼科

      Volume: 75 Pages: 863-869

    • NAID

      40022635828

    • Related Report
      2021 Research-status Report
  • [Presentation] 黄色ブドウ球菌由来毒素PSMαによるマウス角膜炎におけるIL-36の関与2023

    • Author(s)
      中島勇魚, 石田わか, 岸本達真, 鈴木崇, 福田 憲, 山城健児
    • Organizer
      角膜カンファランス2023
    • Related Report
      2022 Research-status Report
  • [Presentation] 黄色ブドウ球菌由来毒素psmαによるマウス角膜炎の解析2022

    • Author(s)
      中島勇魚, 石田わか, 岸本達真, 鈴木崇, 福田 憲, 山城健児
    • Organizer
      第55回日本眼炎症学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Staphylococcus aureus virulent PSMα induces alarmin release in corneal cells.2021

    • Author(s)
      Nakajima I, Ishida W, Kishimoto T, Suzuki T, Fukuda K
    • Organizer
      The 7th Asia Cornea Society Biennial Scientific Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 黄色ブドウ球菌由来PSMαによる角膜細胞におけるアラーミン放出2021

    • Author(s)
      中島勇魚, 石田わか, 岸本達真, 鈴木 崇, 福田 憲
    • Organizer
      第57回日本眼感染症学会
    • Related Report
      2021 Research-status Report

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

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