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Intravital imaging of anti-fungal immunity focusing on the role of epithelial cells in the skin

Research Project

Project/Area Number 19K17770
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53050:Dermatology-related
Research InstitutionKyoto University

Principal Investigator

Murata Teruasa  京都大学, 医学研究科, 助教 (40838801)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsカンジダ / 皮膚角化細胞 / 細胞死 / 真菌感染 / 体細胞変異 / 遺伝性角化症 / KID症候群 / 魚鱗癬症候群 / 真菌 / 皮膚 / コネキシン / 体細胞突然変異 / 免疫 / 自然免疫 / 角化細胞 / 上皮細胞 / カルシウムイオン / 生体内観察
Outline of Research at the Start

1、KID症候群における慢性カンジダ感染の病態の解明、およびそれを通した、2、カンジダ排除における表皮細胞の役割の解明を目指す。表皮細胞の細胞内カルシウムイオンの角化における役割に着目する。KID症候群モデルマウス、蛍光発現カンジダ、KID症候群の患者サンプルを用い、二光子顕微鏡による生体内観察、免疫染色・特殊染色、RNA-seq、表皮細胞培養系による解析を行う。

Outline of Final Research Achievements

Candida, the major fungus infecting humans, is known to be eliminated by leukocytes. However, KID syndrome is complicated by chronic cutaneous candidiasis despite mutations in the GJB2 gene, which is unlikely to be involved in leukocyte function, and the cause of the disease is unknown. In this study, we analyzed the unusual phenomenon of somatic mutations appearing after the healing of cutaneous candidiasis in patients with KID syndrome and conducted experiments using a mouse model of KID syndrome. The results revealed that GJB2 mutations in skin keratinocytes are responsible for the susceptibility to Candida infection.

Academic Significance and Societal Importance of the Research Achievements

カンジダは高齢者や免疫力の低下した人に重篤な日和見感染を起こす真菌であり、皮膚は人体への侵入門戸の一つである。これまで白血球の機能に注目した研究が蓄積されてきたが、上皮細胞の関わりを直接示すヒトの疾患はなかった。本研究で解析した体細胞変異は、皮膚角化細胞がカンジダへの抵抗力に関わる可能性を強く示唆するものである。皮膚に限らず上皮細胞の働きに着目した、カンジダ感染症の予防・治療法の開発につながる可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Book (1 results)

  • [Journal Article] Stratum corneum as polymer sheet: concept and cornification processes2022

    • Author(s)
      Murata Teruasa、Honda Tetsuya、Mostafa Alshimaa、Kabashima Kenji
    • Journal Title

      Trends in Molecular Medicine

      Volume: 28 Issue: 5 Pages: 350-359

    • DOI

      10.1016/j.molmed.2022.02.008

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Combined multiphoton imaging and biaxial tissue extension for quantitative analysis of geometric fiber organization in human reticular dermis2019

    • Author(s)
      Maho Ueda, Susumu Saito, Teruasa Murata, Tomoko Hirano, Ryoma Bise, Kenji Kabashima, Shigehiko Suzuki
    • Journal Title

      Scientific Reports

      Volume: 23:9(1) Issue: 1 Pages: 10644-10644

    • DOI

      10.1038/s41598-019-47213-5

    • NAID

      120006708224

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] カルシウムイオンの流入は皮膚上皮細胞の正常な角化と異常な角化を誘導する2021

    • Author(s)
      村田光麻、椛島健治
    • Organizer
      第42回炎症再生学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] カルシウムイオンを切り口とした皮膚上皮細胞の細胞死(角化)メカニズムの解析2021

    • Author(s)
      村田光麻、椛島健治
    • Organizer
      生理学研究所研究会 「細胞システム理解のためのシグナル応答原理解明の最前線」
    • Related Report
      2021 Annual Research Report
  • [Presentation] カルシウムイオンに着目した皮膚上皮細胞の最終分化メカニズムの解析2021

    • Author(s)
      村田 光麻
    • Organizer
      第23回 トランスグルタミナーゼ研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] KID症候群の慢性カンジダ感染巣に限局して多発したGJB2の体細胞変異クローンの拡大2021

    • Author(s)
      村田光麻、石田雄大、竹田真衣、乃村俊史
    • Organizer
      第36回 角化症研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Identification of aberrantly high cytoplasmic Ca2+ in granular keratinocytes preceding hyperkeratosis in KID syndrome by intravital imaging2020

    • Author(s)
      Teruasa Murata, Tetsuya Honda, Hiromi Doi, Teruki Dainichi, Kenji Kabashima
    • Organizer
      45th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 第34回角化症研究会、Revertant mosaicismを疑う所見を呈したKID症候群における難治性カンジダ 皮膚炎の1例2019

    • Author(s)
      小松貴義・村田光麻
    • Organizer
      第34回角化症研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 角化細胞の細胞質カルシウムイオン濃度に着目したKID症候群の病態解析2019

    • Author(s)
      村田光麻
    • Organizer
      第34回角化症研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 表皮角化細胞の細胞質カルシウムイオン濃度に着目した角化症の病態解析2019

    • Author(s)
      村田光麻
    • Organizer
      第2回炎症性皮膚疾患集中セミナー
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 表皮角化細胞の細胞内カルシウムイオン濃度のダイナミクスと表皮の分化との関係2019

    • Author(s)
      村田光麻
    • Organizer
      皮膚科学と数理科学の接点
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Distinct dynamics of cytoplasmic calcium ions of epidermal keratinocytes in connexin-related keratoderma2019

    • Author(s)
      Teruasa Murata
    • Organizer
      Gordon research seminar(Epithelial differentiation and keratinization)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Distinct dynamics of cytoplasmic calcium ions of epidermal keratinocytes in connexin-related keratoderma2019

    • Author(s)
      Teruasa Murata
    • Organizer
      Gordon research conference(Epithelial differentiation and keratinization)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] 皮膚上皮細胞の分化と角化2021

    • Author(s)
      村田光麻
    • Total Pages
      5
    • Publisher
      北隆館
    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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