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Development of T-cell immunotherapy for cancer and viral disease

Research Project

Project/Area Number 21K08153
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionOsaka University

Principal Investigator

Iwahori Kota  大阪大学, 大学院医学系研究科, 特任講師(常勤) (80566448)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsがん免疫療法 / Tリンパ球
Outline of Research at the Start

がんおよびウイルス感染症においてはT細胞性免疫応答が重要な役割を担っている。そのため、がんおよびウイルス抗原特異的T細胞性免疫応答を増強する治療法の開発はこれらの疾患の克服に重要な課題である。
申請者らは、T細胞性免疫応答を定量的に測定する系を開発し、その測定系を用いて既存薬のスクリーニングを行った結果、低用量のテトラサイクリン系薬剤にT細胞性免疫応答増強効果があることを見出した。本研究では、低用量テトラサイクリン系薬剤によるT細胞性免疫応答増強の機序を解明し、新たながんおよび抗ウイルス免疫療法の治療標的を見出すことを目標としている。

Outline of Final Research Achievements

Tetracyclines enhanced antitumor T-cell cytotoxicity in human peripheral T cells, murine models, and the lung tumor tissues of patients with non-small cell lung cancer (NSCLC). We investigated the effects of minocycline on the outcomes of patients with epidermal growth factor receptor (EGFR)-mutant NSCLC treated with first-line EGFR-tyrosine kinase inhibitors based on a retrospective analysis and showed that the administration of minocycline correlated with good progression-free survival and overall survival. We conducted a randomized clinical trial to evaluate the efficacy of demeclocycline for patients with mild-to-moderate coronavirus disease 2019 (COVID-19) with a focus on T-cell responses, and found a significant increase in the number of peripheral CD4+ T cells in the tetracycline-treated group, which negatively correlated with plasma interleukin-6 levels.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、これまでがん免疫療法で用いられてきた免疫チェックポイント阻害薬などと異なる作用機序に基づいたテトラサイクリン系化合物のT細胞性免疫応答賦活作用を明らかにしたものである。本研究成果を発展させることにより、今後従来の免疫チェックポイント阻害薬とは異なる新たな作用機序に基づいたがん治療薬の開発が期待される。

Report

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

    (3 results)

All 2023 2022

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results)

  • [Journal Article] Impact of minocycline on outcomes of EGFR-mutant non-small cell lung cancer patients treated with EGFR-TKIs2023

    • Author(s)
      Tone Mari、Iwahori Kota、Shiroyama Takayuki、Futami Shinji、Naito Yujiro、Fukushima Kiyoharu、Miyake Kotaro、Koyama Shohei、Hirata Haruhiko、Nagatomo Izumi、Wada Hisashi、Takeda Yoshito、Kumanogoh Atsushi
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1

    • DOI

      10.1038/s41598-023-35519-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A randomized phase 2 study on demeclocycline in patients with mild-to-moderate COVID-192023

    • Author(s)
      Iwahori Kota、Nii Takuro、Yamaguchi Norihiko、Kawasaki Takahiro、Okamura Satomi、Hashimoto Kazuki、Matsuki Takanori、Tsujino Kazuyuki、Miki Keisuke、Osa Akio、Goya Sho、Abe Kinya、Mori Masahide、Takeda Yoshito、Yamada Tomomi、Kida Hiroshi、Kumanogoh Atsushi
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1

    • DOI

      10.1038/s41598-023-41051-2

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tetracyclines Enhance Anti-tumor T-Cell Responses Induced by a Bispecific T-Cell Engager2022

    • Author(s)
      Noguchi Yuki、Yamamoto Yoko、Iwahori Kota、Matsumoto Mitsunobu、Hirata Michinari、Okuyama Hiroomi、Shintani Yasushi、Kumanogoh Atsushi、Wada Hisashi
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 45 Issue: 4 Pages: 429-437

    • DOI

      10.1248/bpb.b21-00806

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2022-04-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access

URL: 

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

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