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Induction of regulatory T cells by utilizing photopheresis

Research Project

Project/Area Number 19K22623
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 53:Organ-based internal medicine and related fields
Research InstitutionNagoya City University

Principal Investigator

Morita Akimichi  名古屋市立大学, 医薬学総合研究院(医学), 教授 (30264732)

Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsフォトフェレーシス / 制御性T細胞 / 自己免疫疾患 / アレルギー疾患 / 光線療法 / フォトフォレーシス
Outline of Research at the Start

血球分離および光増感剤を用いないフォトフェレーシスの開発とフォトフォレーシスによるアレルギー・免疫疾患治療を対象にした効率的な制御性T細胞(Treg)の誘導の基盤技術の開発を目的とする。フォトフェレーシスの普及を阻害している要因として、血球分離が必要なこと、光増感剤を使用することなどが挙げられる。深紫外LEDやフォトニック結晶ファイバーという最先端の光学技術を駆使し、血球分離および光感作物質を必要としないシステムの構築を進める。フォトニック結晶ファイバーの最適化、分光分布、放射照度、照射量などの照射方法の最適化、フォトフェレーシスのメカニズム、動物実験による効果の検証を行う。

Outline of Final Research Achievements

The aim of this study was to develop photopheresis without blood cell separation and photosensitizers, and to develop basic technology for induction of regulatory T cells (Treg). I have developed a system that does not require blood cell separation or photosensitizers using state-of-the-art optical technologies such as deep-ultraviolet LEDs and photonic crystal fibers. To verify the mechanism of Treg induction, lymphocytes were isolated after irradiation, and RNA sequencing was performed on the fraction of lymphocytes that appeared to be Tregs.

Academic Significance and Societal Importance of the Research Achievements

フォトフェレーシスは、尋常性天疱瘡やリウマチ性血管炎、全身性ループスエリテマトーデスなどさまざまな自己免疫疾患において有効であり、さらに心臓移植後の拒絶反応の抑制や宿主対移植片病(GvHD)にも有効であることが明らかとなった。フォトフェレーシスの普及を阻害している要因として、血球分離が必要なこと、光増感剤を使用することなどが挙げられる。そのため、血球分離および光増感剤を用いないフォトフェレーシスの開発とフォトフォレーシスによるアレルギー・免疫疾患治療を対象にした効率的な制御性T細胞(Treg)の誘導の基盤技術は、必要とされるものである。

Report

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

    (8 results)

All 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Bath-PUVA therapy suppresses keratinocyte-derived chemokines in pathogenetically relevant cells.2021

    • Author(s)
      Yoshifumi Kanayama, Kan Torii, Kyoko Ikumi, Akimichi Morita
    • Journal Title

      JID innovations

      Volume: 1 Issue: 3 Pages: 100027-100027

    • DOI

      10.1016/j.xjidi.2021.100027

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] UVA1 phototherapy for the treatment of T cell mediated skin diseases and scleroderma.2021

    • Author(s)
      Akimichi Morita
    • Organizer
      7th Global Chinese Dermatological Summit
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Regulatory T cell induction prolongs the effiecay for the treatment of psoriasis2021

    • Author(s)
      Akimichi Morita
    • Organizer
      19th ESP Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Successful treatment of palmoplantar pustulosis by UVA1-LED phototherapy.2021

    • Author(s)
      Kyoko Ikumi, Tomohiko Kio, Kan Torii, Hideyuki Masuda, Akimichi Morita:
    • Organizer
      50th ESDR
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Suitable wavelength characteristics for applying deep ultraviolet light-emitting diodes to phototherapy.2021

    • Author(s)
      Hideyuki Masuda, Akimichi Morita:
    • Organizer
      50th ESDR
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Role of phototherapy in the management of psoriasis.2021

    • Author(s)
      Akimichi Morita
    • Organizer
      IPC Psoriasis Masterclass
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 制御性T細胞の誘導方法2020

    • Inventor(s)
      森田明理、益田秀之
    • Industrial Property Rights Holder
      名古屋市立大学、ウシオ電機
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-112482
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] フォトフェレーシスのための紫外光照射方法、フォトフェレーシス用マイクロデバイス、および、フォトフェレーシス用紫外光照射装置2019

    • Inventor(s)
      森田明理
    • Industrial Property Rights Holder
      森田明理
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Acquisition Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2023-01-30  

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