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Development of a novel liver cancer therapy by inducing chemotaxis of CD4-positive killer T cells

Research Project

Project/Area Number 20K17018
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionUniversity of Fukui

Principal Investigator

Naito Tatsushi  福井大学, 学術研究院医学系部門(附属病院部), 助教 (60529329)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsCD4陽性キラーT細胞 / 肝癌 / ケモカイン / 多重染色 / 次世代シーケンサー / 肝がん / 多重免疫染色
Outline of Research at the Start

肝細胞癌は予後不良な癌腫であり、集学的治療の開発が望まれている。一方、近年ヘルパーT 細胞とは異なり細胞傷害活性を有するCD4 陽性キラーT 細胞(CD4+ CTL)の存在が注目されている。申請者らはこれまでに、化学療法時の抗腫瘍効果に対するCD4+ CTLの関与及びその遊走因子としてのケモカインCCL3を明らかにしてきた。本研究では、マウス同所性肝細胞癌モデルとヒト肝細胞癌組織を用いて、CD4+ CTL 及び他のT 細胞サブセットの動態を経時的に解析する。さらに、ケモカインによるCD4+ CTL を介した抗腫瘍活性の増強効果を明らかにし、ケモカイン制御による新規の抗癌治療法の確立を目指す。

Outline of Final Research Achievements

This study aims to elucidate the dynamics of CD4+ killer T cells (CD4+CTL) with direct cytotoxic activity in hepatocellular carcinoma tumor tissue, a newly recognized class of CD4-positive cells that have been considered to have helper activity in immunity. During the study period, we established a mouse orthotopic hepatocellular carcinoma model using the mouse hepatoma cell line BNL 1ME A.7R.1 (BNL). Using TSA immunohistochemical staining, which allows simultaneous 7-color multiple staining, we analyzed the intratumoral localization and population of immune cells such as CD4+CTLs, CD8+CTLs, helper T cells, regulatory T cells, and macrophages. In addition, differences in T cell localization between background liver and hepatocellular carcinoma were identified.

Academic Significance and Societal Importance of the Research Achievements

肝癌腫瘍組織において背景肝と腫瘍部で異なる免疫細胞が分布していることが明らかとなった。T細胞およびマクロファージにおいても、腫瘍の進展と制御において形態・役割の異なった細胞が存在し関与していることが示唆された。白血球を遊走させるケモカインを制御することで、癌部にCD4+CTLを誘導するという新たな治療戦略が考えられる。本研究成果は、再発を繰り返す予後不良な癌腫である肝細胞癌において新規の抗癌治療法の確立に寄与するという社会的意義がある。

Report

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

    (8 results)

All 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (3 results)

  • [Journal Article] Successful early diagnosis of monomorphic epitheliotropic intestinal T-cell lymphoma manifesting as chronic diarrhea and hypokalemia using video capsule endoscopy and double-balloon enteroscopy.2022

    • Author(s)
      Naito T, Nosaka T, Takahashi K, Ofuji K, Matsuda H, Ohtani M, Hiramatsu K, Imamura Y, Yamauchi T, Nakamoto Y.
    • Journal Title

      Clin J Gastroenterol.

      Volume: 15(5) Issue: 5 Pages: 913-919

    • DOI

      10.1007/s12328-022-01676-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cholesterol crystal embolism in multiple organs after transarterial chemoembolization for hepatocellular carcinoma: An autopsy case report.2022

    • Author(s)
      Yamashita J, Nosaka T, Takahashi K, Naito T, Ofuji K, Matsuda H, Ohtani M, Hiramatsu K, Kobayashi M, Nakamoto Y.
    • Journal Title

      Medicine (Baltimore)

      Volume: 101(39) Issue: 39 Pages: e30769-e30769

    • DOI

      10.1097/md.0000000000030769

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A rare case of eosinophilic gastritis induced by nivolumab therapy for metastatic melanoma.2022

    • Author(s)
      Tsuji A, Hiramatsu K, Namikawa S, Yamamoto A, Midori Y, Murata Y, Tanaka T, Nosaka T, Naito T, Takahashi K, Ofuji K, Matsuda H, Ohtani M, Imamura Y, Iino S, Hasegawa M, Nakamoto Y.
    • Journal Title

      Clin J Gastroenterol.

      Volume: 5(5) Issue: 5 Pages: 876-880

    • DOI

      10.1007/s12328-022-01680-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Elderly onset congenital hepatic fibrosis with portal hypertension diagnosed after recurrent cholangitis: a case report2022

    • Author(s)
      Takahashi Kazuto、Ofuji Kazuya、Nosaka Takuto、Naito Tatsushi、Matsuda Hidetaka、Ohtani Masahiro、Hiramatsu Katsushi、Harada Kenichi、Naiki Hironobu、Nakamoto Yasunari
    • Journal Title

      Clinical Journal of Gastroenterology

      Volume: 15 Issue: 3 Pages: 611-616

    • DOI

      10.1007/s12328-022-01620-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A case of immune checkpoint inhibitor-related colitis with a distinctive endoscopic finding of colonic pseudolipomatosis2021

    • Author(s)
      Naito Tatsushi、Nosaka Takuto、Takahashi Kazuto、Ofuji Kazuya、Matsuda Hidetaka、Ohtani Masahiro、Hiramatsu Katsushi、Imamura Yoshiaki、Ishizuka Tamotsu、Nakamoto Yasunari
    • Journal Title

      Clinical Journal of Gastroenterology

      Volume: 14 Issue: 5 Pages: 1431-1436

    • DOI

      10.1007/s12328-021-01459-7

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 大腸内視鏡検査におけるAIを用いたレポート作成支援システム(AR-C1)の有用性の検討2022

    • Author(s)
      内藤 達志,平松 活志,中本 安成
    • Organizer
      第101回 日本消化器内視鏡学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 新生児・乳児消化管アレルギーの診断における内視鏡検査の意義2021

    • Author(s)
      内藤達志,平松活志,中本安成
    • Organizer
      第107回 消化器病学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Usefulness of DBE EN-580XP, a slim double-balloon endoscope, in pediatric colonoscopy2021

    • Author(s)
      Tatsushi Nait, Katsushi Hiramatsu, Yasunari Nakamoto
    • Organizer
      第101回 日本消化器内視鏡学会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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