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Development of a new treatment of leukemia with the induction of the differentiation-initiating isoform of MEF2D by splicing manipulation

Research Project

Project/Area Number 21K19505
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 54:Internal medicine of the bio-information integration and related fields
Research InstitutionNagoya University

Principal Investigator

HAYAKAWA FUMIHIKO  名古屋大学, 医学系研究科(保健), 教授 (30402580)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords分化誘導療法 / スプライシング / MEF2D / 白血病 / スプライシング誘導 / ヒストン脱アセチル化酵素 / 急性リンパ性白血病
Outline of Research at the Start

MEF2D融合蛋白はPAX5とHDAC4双方と結合することでPAX5の転写活性化能を抑制し、B細胞分化障害を起こすことで白血病を発症させると考えられている。野生型MEF2D遺伝子はα1 exonとα2 exonを排他的に使い分けており、MEF2D α1はHDAC4と結合し分化に抑制的に作用するが、MEF2D α2はHDAC4とは結合せず、分化誘導に働くと言われている。MEF2D融合遺伝子では通常α1 exonが選択されているが、そのスプライシングに働きかけα2 exonを選択させることで、MEF2D融合蛋白を分化抑制型から分化誘導型に転換し、白血病細胞に分化または細胞死を誘導することを目指す。

Outline of Final Research Achievements

Two isoforms of MEF2D, MEF2Dα1 and MEF2Dα2, use α1 exon and α2 exon as exon 3, respectively. In the present study, we investigated whether inducing α2 switch to MEF2D fusion genes in ALL cells released the inhibition of PAX5 by MEF2D fusion protein and caused differentiation or death of ALL cells. M-Bα2 interacted with HDAC4 in cells. M-Bα1 and M-Bα2 similarly inhibited the transcriptional activity of PAX5. Furthermore, α2 switch of M-B did not affect the expression of the transcriptional target genes of PAX5, cell proliferation, or differentiation status in M-B-positive ALL cells. These findings indicate that therapeutic effect of α2 switch in MEF2D fusion-positive ALL cells is less to be expected.

Academic Significance and Societal Importance of the Research Achievements

本研究では、リンパ球分化障害を起こして白血病発症の原因となっていると考えられるMEF2D融合蛋白に対し、融合遺伝子のスプライシングに働きかけ、分化抑制型のアイソフォームから分化促進型のアイソフォームへの転換を誘導することで融合蛋白による分化障害を解消するという試みであった。目的とするアイソフォーム転換の誘導には成功したが、分化誘導型であると期待したアイソフォームには分化誘導能がなかった。アイソフォーム転換の誘導には成功しているので、別な融合遺伝子では分化誘導能を持つアイソフォームの誘導に成功する可能性はあり、新たながん治療開発に寄与する可能性がある。

Report

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

    (21 results)

All 2023 2022 2021 Other

All Journal Article (12 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 6 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Suppression of super-enhancer-driven TAL1 expression by KLF4 in T-cell acute lymphoblastic leukemia2023

    • Author(s)
      Noura Mina、Matsuo Hidemasa、Yasuda Takahiko、Tsuzuki Shinobu、Kiyoi Hitoshi、Hayakawa Fumihiko
    • Journal Title

      Oncogene

      Volume: 43 Issue: 6 Pages: 447-456

    • DOI

      10.1038/s41388-023-02913-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EBF1-JAK2 inhibits the PAX5 function through physical interaction with PAX5 and kinase activity.2023

    • Author(s)
      Kojima Y, Kawashima F, Yasuda T, et al.
    • Journal Title

      Int J Hematol.

      Volume: in press Issue: 1 Pages: 65-74

    • DOI

      10.1007/s12185-023-03585-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 造血器腫瘍の現在と未来 AYA世代急性リンパ性白血病2023

    • Author(s)
      早川 文彦
    • Journal Title

      小児科診療

      Volume: 86 Pages: 902-905

    • Related Report
      2023 Annual Research Report
  • [Journal Article] 抗体医薬を用いたB-ALL治療の進歩2023

    • Author(s)
      早川 文彦
    • Journal Title

      血液内科

      Volume: 87 Pages: 29-33

    • Related Report
      2023 Annual Research Report
  • [Journal Article] EBF1-JAK2 inhibits the function of PAX5 through its physical interaction with PAX5 and kinase activity.2023

    • Author(s)
      Kojima Y, Kawashima F, Yasuda T, et al.
    • Journal Title

      Int. J. Hematol.

      Volume: in press

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Functional inhibition of MEF2 by C/EBP is a possible mechanism of leukemia development by <i>CEBP‐IGH</i> fusion gene2022

    • Author(s)
      Odaira Koya、Yasuda Takahiko、Okada Kentaro、Shimooka Takuya、Kojima Yukino、Noura Mina、Tamura Shogo、Kurahashi Shingo、Iwamoto Eisuke、Sanada Masashi、Matsumura Itaru、Miyazaki Yasushi、Kojima Tetsuhito、Kiyoi Hitoshi、Tsuzuki Shinobu、Hayakawa Fumihiko
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 3 Pages: 781-792

    • DOI

      10.1111/cas.15641

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Oncogenic lesions and molecular subtypes in adults with B‐cell acute lymphoblastic leukemia2022

    • Author(s)
      Yasuda Takahiko、Sanada Masashi、Tsuzuki Shinobu、Hayakawa Fumihiko
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 1 Pages: 8-15

    • DOI

      10.1111/cas.15583

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] BCL6 inhibition ameliorates resistance to ruxolitinib in &lt;i&gt;CRLF2&lt;/i&gt;-rearranged acute lymphoblastic leukemia2022

    • Author(s)
      Tsuzuki Shinobu、Yasuda Takahiko、Goto Hiroaki、Maeda Naoko、Akahane Koshi、Inukai Takeshi、Yamamoto Hideyuki、Karnan Sivasundaram、Ota Akinobu、Hyodo Toshinori、Konishi Hiroyuki、Hosokawa Yoshitaka、Kiyoi Hitoshi、Hayakawa Fumihiko
    • Journal Title

      Haematologica

      Volume: 108 Issue: 2 Pages: 394-408

    • DOI

      10.3324/haematol.2022.280879

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transcriptome-wide subtyping of pediatric and adult T cell acute lymphoblastic leukemia in an international study of 707 cases2022

    • Author(s)
      Dai Yu-Ting、Zhang Fan、Fang Hai、Li Jian-Feng、et al.
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 119 Issue: 15

    • DOI

      10.1073/pnas.2120787119

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] F9 mRNA splicing aberration due to a deep Intronic structural variation in a patient with moderate hemophilia B2022

    • Author(s)
      Odaira Koya、Kawashima Fumika、Tamura Shogo、Suzuki Nobuaki、Tokoro Mahiru、Hayakawa Yuri、Suzuki Atsuo、Kanematsu Takeshi、Okamoto Shuichi、Takagi Akira、Katsumi Akira、Matsushita Tadashi、Shima Midori、Nogami Keiji、Kojima Tetsuhito、Hayakawa Fumihiko
    • Journal Title

      Thrombosis Research

      Volume: 213 Pages: 91-96

    • DOI

      10.1016/j.thromres.2022.03.010

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Periosteum-derived podoplanin-expressing stromal cells regulate nascent vascularization during epiphyseal marrow development2022

    • Author(s)
      Tamura Shogo、Mukaide Masato、Katsuragi Yumi、Fujii Wataru、Odaira Koya、Suzuki Nobuaki、Tsukiji Nagaharu、Okamoto Shuichi、Suzuki Atsuo、Kanematsu Takeshi、Katsumi Akira、Takagi Akira、Ikeda Katsuhide、Ueyama Jun、Hirayama Masaaki、Suzuki-Inoue Katsue、Matsushita Tadashi、Kojima Tetsuhito、Hayakawa Fumihiko
    • Journal Title

      Journal of Biological Chemistry

      Volume: 298 Issue: 5 Pages: 101833-101833

    • DOI

      10.1016/j.jbc.2022.101833

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two novel high-risk adult B-cell acute lymphoblastic leukemia subtypes with high expression of CDX2and IDH1/2 mutations2022

    • Author(s)
      Yasuda Takahiko、Ogawa Seishi, et al.
    • Journal Title

      Blood

      Volume: 139 Issue: 12 Pages: 1850-1862

    • DOI

      10.1182/blood.2021011921

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Suppression of super-enhancer-driven TAL1 expression by KLF4 in T-cell acute lymphoblastic leukemia.2023

    • Author(s)
      Noura M, et al. (6人中6番目)
    • Organizer
      65th annual meeting of American Society of Hematology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ネララビン併用化学療法による治療成績改善と重篤な神経障害 JALSG T-ALL213-O2023

    • Author(s)
      早川 文彦 他(15人中1番目)
    • Organizer
      第85回日本血液学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ZNF384融合蛋白転写標的の探索2023

    • Author(s)
      山田 千晴 他(9人中9番目)
    • Organizer
      第85回日本血液学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 1.Aberrantly Expressed C/EBPα in B Cells Functionally Inhibits MEF2 Family Transcription Factors: A Possible Mechanism of Leukemia Development by CEBP-IGH.2022

    • Author(s)
      Koya Odaira, Takahiko Yasuda, Kentaro Okada, et al.
    • Organizer
      12th AACR-JCA Joint Conference: Breakthroughs in Cancer Research.
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 2.Aberrant expression of CEBPα inhibits MEF2 transcriptional activity in B cell precursor acute lymphoblastic leukemia.2022

    • Author(s)
      大平晃也, 岡田健太郎, 下岡拓弥 他
    • Organizer
      第84回日本血液学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 3.Functional analysis of EBF1-JAK2 fusion protein in B-cell acute lymphoblastic leukemia.2022

    • Author(s)
      小嶋有希乃, 河島史華, 安田貴彦 他
    • Organizer
      第84回日本血液学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] B細胞性急性リンパ性白血病 ―最近の知見と今後の治療―2021

    • Author(s)
      1.早川文彦
    • Organizer
      第83回日本血液学会学術総会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] AYA世代のがん研究における最新の知見 Pre-B細胞性急性リンパ球性白血病における転写制御ネットワーク2021

    • Author(s)
      4.都築 忍, 安田 貴彦, 河津 正人, 上野 敏秀, カルナン・シバスンダラン , 太田 明伸, 真田 昌, 永井 宏和, 冨田 章裕, 高橋 義行, 宮崎 泰司, 松村 到, 清井 仁, 細川 好孝, 間野 博行, 早川 文彦
    • Organizer
      第80回日本癌学会総会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Remarks] 名古屋大学大学院医学系研究科細胞遺伝子情報科学講座

    • URL

      https://bloodgene-1340.jimdofree.com

    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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