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Elucidation of a novel mechanism of activating cellular immunity in psoriasis

Research Project

Project/Area Number 21K16216
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

MAEDA Kohei  昭和大学, 薬学部, 助教 (00882549)

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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords乾癬 / Th17細胞 / Tc17細胞 / CD83 / 細胞性免疫 / Th17 / Tc17
Outline of Research at the Start

乾癬は自己免疫反応に起因する慢性的な炎症性皮膚疾患であり、Tc17細胞を始めとした細胞性免疫の活性化が病変の進展・悪化に寄与していることが明らかになってきた。我々は、病的なTh17サブセットが強いCD8+T細胞活性化能、およびTc17細胞誘導能を有する事を見出したが、その詳細な分子メカニズムは不明である。本研究では、病的なTh17サブセットが特異的に発現する遺伝子から、Tc17細胞の誘導に関与する分子をスクリーニングし、Th17細胞によるTc17細胞の誘導メカニズムを明らかにすることを目的とする。本研究により、Th17/Tc17を軸とした難治性疾病の病態解明に新たな期待が生まれるかもしれない。

Outline of Final Research Achievements

In this study, we attempted to identify a pathogenic Th17 subset in a pathogenesis of psoriasis. We also examined the effect of this putative pathogenic Th17 subset on CD8+ T cell activation associated with psoriasis exacerbation. We identified the MCAM+CD161- Th17 subset as the pathogenic Th17 subset in a pathogenesis of psoriasis. Also, we found the CD83 gene, a CD8+-T-cell activator, is specifically expressed in this subset. These results suggested that the MCAM+CD161- Th17 subset may activate CD8+ T cells through IL-17A production and CD83-mediated cell contact, leading to an abnormal immune response in psoriasis.

Academic Significance and Societal Importance of the Research Achievements

Th17細胞から産生されるIL-17Aや、Th17細胞の活性化に関連するIL-23などを標的とした分子標的治療が乾癬に対して非常に優れた有効性を示すことから、Th17細胞が乾癬の増悪に寄与していることは明らかであったが、近年、IL-17Aを産生するCD8+T細胞や、皮膚に常在するレジデントメモリーCD8+T細胞が乾癬の皮膚炎症を惹起している可能性が明らかとなってきた。しかし、乾癬におけるTh17細胞とCD8+T細胞の相互作用に関して検討している研究は我々の知るところでは存在せず、本研究が初めて詳細な解析を実施した。

Report

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

    (10 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] MCAM+CD161- Th17 Subset Expressing CD83 Enhances Tc17 Response in Psoriasis2023

    • Author(s)
      Kohei Maeda, Toshihiro Tanioka, Rei Takahashi, Hideaki Watanabe, Hirohiko Sueki, Masafumi Takimoto, Shin-ichi Hashimoto, Kazuho Ikeo, Yusuke Miwa, Tsuyoshi Kasama, Sanju Iwamoto
    • Journal Title

      The Journal of Immunology

      Volume: - Issue: 12 Pages: 1867-1881

    • DOI

      10.4049/jimmunol.2200530

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Ang III/AT2R Pathway Enhances Glucose Uptake by Improving GLUT1 Expression in 3T3-L1 Adipocytes2021

    • Author(s)
      Tanioka Toshihiro、Maeda Kohei、Takahashi Rei、Iwamoto Sanju
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 44 Issue: 7 Pages: 1014-1018

    • DOI

      10.1248/bpb.b20-00946

    • NAID

      130008060353

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2021-07-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A profile of pro-inflammatory cytokine expression in human Delta-1-induced monocyte-derived Langerhans cell-like dendritic cells after stimulation with Toll-like receptor ligands2021

    • Author(s)
      Takahashi Rei、Iwamoto Sanju、Tanioka Toshihiro、Maeda Kohei
    • Journal Title

      The Showa University Journal of Medical Sciences

      Volume: 33 Issue: 3 Pages: 67-73

    • DOI

      10.15369/sujms.33.67

    • NAID

      130008089215

    • ISSN
      0915-6380, 2185-0968
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] CD83を発現するTh17細胞は乾癬におけるTc17反応を増幅する2023

    • Author(s)
      前田 耕平, 谷岡 利裕, 高橋 玲, 磯﨑 健男
    • Organizer
      第67回日本リウマチ学会総会・学術集会
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
  • [Presentation] 単球由来ランゲルハンス様樹状細胞はToll様受容体刺激により乾癬関連分子を誘導する2023

    • Author(s)
      高橋 玲, 前田 耕平, 谷岡 利裕, 磯﨑 健男
    • Organizer
      第67回日本リウマチ学会総会・学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Toll-Like Receptor Ligands Stimulated Monocyte-Derived Langerhans Cell-Like Dendritic Cells Induce Psoriasis-Related Molecules, IL-23 and Delta-Like-42022

    • Author(s)
      Rei Takahashi, Kohei Maeda, Toshihiro Tanioka, Takeo Isozaki
    • Organizer
      2022 ACR Convergence
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] S-nitrosoglutathione Reductase (GSNOR) Regulates Osteoclast Differentiation2022

    • Author(s)
      Toshihiro Tanioka, Kohei Maeda, Rei Takahashi, Takeo Isozaki
    • Organizer
      2022 ACR Convergence
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 単球由来Delta-1誘導ランゲルハンス細胞様樹状細胞は乾癬病態に関連するサイトカインを産生する2021

    • Author(s)
      髙橋 玲、巖本 三壽、谷岡 利裕、前田 耕平
    • Organizer
      第36回日本乾癬学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] The Different Expression of Soluble and Membranous CD83 in CD4+ T Cell Subsets2021

    • Author(s)
      MAEDA Kohei, TANIOKA Toshihiro, TAKAHASHI Rei, IWAMOTO Sanju,
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] A profile of pro-inflammatory cytokine expression in human Delta-1-induced monocyte-derived Langerhans cell-like dendritic cells after stimulation with Toll-like receptor ligands2021

    • Author(s)
      TAKAHASHI Rei, IWAMOTO Sanju, TANIOKA Toshihiro, MAEDA Kohei
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Research-status Report

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

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