• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Application to the treatment of canine atopic dermatitis based on the mechanism of the retention of skin memory T cells

Research Project

Project/Area Number 19K15980
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionKyoto University

Principal Investigator

Asahina Ryota  京都大学, 医学研究科, 特別研究員(PD) (00837487)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsアトピー性皮膚炎 / 組織常在型記憶T細胞 / 樹状細胞 / 組織常在型メモリーT細胞 / CXCR6 / CXCL16 / 真皮樹状細胞 / 犬アトピー性皮膚炎 / レジデントメモリーT細胞 / 寛解維持療法 / トランスレーショナルリサーチ
Outline of Research at the Start

アトピー性皮膚炎(AD)は、増悪と寛解を繰り返す慢性皮膚疾患であり、原因抗原に対する過剰な免疫応答を低下させる治療開発が求められている。近年、組織浸潤後に長期間駐在し、抗原の再曝露に対して迅速に炎症反応を誘導するレジデントメモリーT(TRM)細胞が発見された。申請者は、アレルギー炎症を誘導したマウス皮膚においてCD4+TRM細胞が血管周囲に長期間駐在する現象を見出している。本研究では、CD4+TRM細胞の皮膚での駐在制御機構を解明し、イヌADに対する新規治療法の確立を目指す。

Outline of Final Research Achievements

Experiments were conducted to elucidate the mechanism of retention of CD4+ tissue-resident memory T (TRM) cells in allergic dermatitis. In a mouse model of delayed-type hypersensitivity, CD4+TRM cells co-localized with classical dendritic cell type 2 (cDC2) in perivascular clusters. In addition, cDC2 highly produced CXCL16, and administration of a CXCL16-neutralizing antibody decreased the number and cluster formation of CD4+TRM cells. Furthermore, CXCR6-positive CD4+TRM cells were pathogenic TRM cells that produced cytokines to induce a rapid relapse upon antigen re-exposure. These findings were also observed in a mouse model of atopic dermatitis.

Academic Significance and Societal Importance of the Research Achievements

本研究成果から、アレルギー性皮膚炎におけるCD4+TRM細胞の皮膚駐在に関わるCXCL16を介した真皮樹状細胞とのクロストーク機構を明らかにした。また、再燃誘導において中心的な役割を果たす病原性TRM細胞サブセットとして、CXCR6陽性CD4+TRM細胞を新たに同定した。以上より、CD4+TRM細胞によるアトピー性皮膚炎の再燃病態が明らかになった。今後は、CXCR6/CXCL16を標的としたCD4+TRM細胞の駐在制御に基づいたアトピー性皮膚炎に対する新規治療開発に応用されることが期待される。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021 2020 2019

All Presentation (10 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] Newly identification of a CXCR6+ pathogenic skin-resident CD4+ T cell subset in a mouse model of allergic dermatitis that requires CXCL16 for its maintenance2023

    • Author(s)
      Ryota Asahina, Fuuka Minami, Gyohei Egawa, Satoshi Nakamizo, Kenji Kabashima
    • Organizer
      International Societies for Investigative Dermatology 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Maintenance of pathogenic CD4+ tissue-resident memory T cells by CD301b+ dendritic cells via CXCL16 in a mouse model of allergic dermatitis2022

    • Author(s)
      朝比奈良太, 南風花, 江川形平, 中溝聡, 椛島健治
    • Organizer
      日本研究皮膚科学会 第47回年次学術大会・総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 病原性CD4+組織常在性記憶T細胞の駐在制御に基づくアレルギー性皮膚疾患に対する新規治療戦略2022

    • Author(s)
      朝比奈良太, 南風花, 江川形平, 中溝聡, 椛島健治
    • Organizer
      第165回日本獣医学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] アレルギー性皮膚炎におけるCD4+組織常在性記憶T細胞の皮膚駐在機構の解明2022

    • Author(s)
      朝比奈良太, 南風花, 江川形平, 中溝聡, 椛島健治
    • Organizer
      第43回日本炎症・再生医学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] アレルギー性皮膚炎におけるCD4陽性レジデントメモリーT細胞の皮膚駐在機構の解明2021

    • Author(s)
      朝比奈良太
    • Organizer
      第164回日本獣医学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Retention of CD4+ tissue-resident memory T cells by interacting with CD301b+ dermal dendritic cells via CXCL16 in a murine delayed-type hypersensitivity model2021

    • Author(s)
      朝比奈良太
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Maintenance of CD4+ tissue-resident memory T cells via perivascular clusters with CD301b+ dermal dendritic cells in a mouse model of allergic dermatitis2021

    • Author(s)
      Ryota Asahina
    • Organizer
      50th Annual European Society for Dermatological Research Meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] CD4+ resident memory T cells colocalize with conventional DC subset 2 in lymphocyte clusters in a murine delayed-type hypersensitivity model2020

    • Author(s)
      Ryota Asahina
    • Organizer
      日本研究皮膚科学会 第45回年次学術大会・総会
    • Related Report
      2020 Research-status Report
  • [Presentation] CD4+ resident memory T cells colocalize with CD301b+ dendritic cells in perifollicular lymphocyte clusters in a murine delayed-type hypersensitivity model2019

    • Author(s)
      Ryota Asahina
    • Organizer
      48th Annual European Society for Dermatological Research Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Retention of CD4+ resident memory T cells through colocalization with CD301b+ dendritic cells in a murine DTH model2019

    • Author(s)
      Ryota Asahina
    • Organizer
      日本研究皮膚科学会 第44回年次学術大会・総会
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi