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Establishment of efficacy prediction model and clinical application of novel epigenetic modifiers

Research Project

Project/Area Number 21K08392
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionKyoto University

Principal Investigator

Nishikori Momoko  京都大学, 医学研究科, 教授 (60378635)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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悪性リンパ腫 / EZH2 / B細胞リンパ腫 / EZH2阻害薬 / エピゲノム
Outline of Research at the Start

EZH2阻害薬はB細胞リンパ腫に対する新しい薬剤であるが、作用機序や奏効症例を予測する指標はまだ十分明らかにされていない。申請者はこれまでにEZH2阻害薬が免疫細胞との相互作用の増強や抗がん剤の効果を増強させるが、その作用はリンパ腫の種類によって異なることを見出している。本研究では遺伝子異常やエピゲノム修飾からEZH2阻害薬の奏効症例の予測方法と最適な併用療法を明らかにし、マウス実験で検証する。

Outline of Final Research Achievements

Using B-cell lymphoma lines, we comprehensively analyzed the gene expression changes induced by EZH2 inhibitors and found that EZH2 inhibitors induce the expression of a group of characteristic humoral factors related to the reactivity of NK cells and T cells. They have also been shown to have the effect of altering the tumor microenvironment of B-cell lymphoma to a certain pattern similar to that of Hodgkin lymphoma. A significant correlation was observed between the genes induced by EZH2 inhibitor treatment in B-cell lymphoma and the genes reported to be highly expressed in H/RS cells of Hodgkin lymphoma. Comparison with the gene sets that are altered by epigenetic modifier genes expressed in H/RS cells have suggested that differences in epigenome modification play a role in the development of different lymphoma disease subtypes.

Academic Significance and Societal Importance of the Research Achievements

EZH2阻害薬は一部の悪性リンパ腫で承認されている新規のエピゲノム修飾薬であるが、その作用機序には不明な部分も多い。そのため本研究では、EZH2阻害薬の作用機序を解明し、薬理作用に基づいた最適な使用法を見出すことを目的とした。B細胞リンパ腫株を用いて、EZH2阻害薬によって生じる遺伝子発現変化を網羅的に解析したところ、EZH2阻害薬はNK細胞やT細胞の反応性を高める特徴的な液性因子の一群の発現を誘導し、リンパ腫の腫瘍微小環境を変化させる作用を持つことが示された。本研究より、本薬剤は免疫療法との併用により治療効果が高まる可能性が示唆された。

Report

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

    (7 results)

All 2024 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (2 results) (of which Invited: 1 results)

  • [Journal Article] Recent advances in understanding the biology of follicular lymphoma2024

    • Author(s)
      Nishikori Momoko
    • Journal Title

      International Journal of Hematology

      Volume: ー Issue: 3 Pages: 326-330

    • DOI

      10.1007/s12185-024-03764-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Epigenetic modification as a therapeutic approach for B-cell lymphoma2022

    • Author(s)
      錦織 桃子、髙折 晃史
    • Journal Title

      Rinsho Ketsueki

      Volume: 63 Issue: 4 Pages: 313-321

    • DOI

      10.11406/rinketsu.63.313

    • ISSN
      0485-1439, 1882-0824
    • Related Report
      2022 Research-status Report
  • [Journal Article] Intravascular clusters of T cells following chimeric antigen receptor T cell therapy2022

    • Author(s)
      Nakamura Naokazu、Nishikori Momoko、Tsujimura Marina、Kageyama Yuki、Akiyama Daisuke、Yoshizawa Akihiko、Takaori‐Kondo Akifumi
    • Journal Title

      eJHaem

      Volume: 3 Issue: 2 Pages: 576-577

    • DOI

      10.1002/jha2.395

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] A sporadic case of CTLA4 haploinsufficiency manifesting as Epstein–Barr virus-positive diffuse large B-cell lymphoma2022

    • Author(s)
      Yuan Hepei、Nishikori Momoko、Ueda Chiyoko、Fujimoto Masakazu、Yasumi Takahiro、Otsuka Yasuyuki、Kitawaki Toshio、Hirata Masahiro、Haga Hironori、Kanegane Hirokazu、Takaori-Kondo Akifumi
    • Journal Title

      Journal of Clinical and Experimental Hematopathology

      Volume: 62 Issue: 1 Pages: 52-57

    • DOI

      10.3960/jslrt.21026

    • NAID

      130008110858

    • ISSN
      1346-4280, 1880-9952
    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] The EZH2 inhibitor tazemetostat upregulates the expression of CCL17/TARC in B‐cell lymphoma and enhances T‐cell recruitment2021

    • Author(s)
      Yuan Hepei、Nishikori Momoko、Otsuka Yasuyuki、Arima Hiroshi、Kitawaki Toshio、Takaori‐Kondo Akifumi
    • Journal Title

      Cancer Science

      Volume: 112 Issue: 11 Pages: 4604-4616

    • DOI

      10.1111/cas.15122

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Different impact of chemotherapeutic agents on NF-kB activity and the survival of lymphoma cells.2022

    • Author(s)
      Nakao K, Nishikori M, Jo T, Yuan H, Kitawaki T, Takaori-Kondo A.
    • Organizer
      第84回日本血液学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Epigenetic modification as a therapeutic approach for B-cell lymphoma2021

    • Author(s)
      錦織 桃子、髙折 晃史
    • Organizer
      第83回日本血液学会総会、JSH-EHA Joint Symposium
    • Related Report
      2021 Research-status Report
    • Invited

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

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