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Identification of Novel Therapeutic Targets for Refractory TP53-Mutated Leukemia

Research Project

Project/Area Number 22K16303
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Semba Yuichiro  九州大学, 医学研究院, 助教 (90816787)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2024: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords急性骨髄性白血病 / TP53 / CRISPR-Cas9スクリーニング / CRISPRスクリーニング
Outline of Research at the Start

成人急性骨髄性白血病 (AML)は、未だ治療成績が不良であり、新規治療法の開発が喫緊の課題である。特に、癌抑制遺伝子TP53の変異は、最も強力な予後不良因子であるが、その治療抵抗性を克服する治療法は未だ確立されていない。申請者は、将来の薬剤開発を念頭に、複雑な細胞状態の変化をきたすTP53変異AMLが依存している経路を網羅的機能的手法により解明し、実臨床の難治性病態に関連する治療標的を同定する。

Outline of Final Research Achievements

TP53 mutations, which are frequently observed in solid tumors, are found in approximately 8% of all acute myeloid leukemia (AML) cases and up to 20% of cases in the elderly. These mutations represent one of the most powerful adverse prognostic factors due to their strong association with resistance to conventional therapies. Given that TP53 has diverse cellular functions in a cell-type-specific manner, we employed a genome-wide CRISPR-Cas9 screening approach to comprehensively identify novel therapeutic targets in TP53-mutant AML. Our screening led to the identification of factors that support the proliferation of TP53-mutant AML cells, and inhibition of these factors resulted in significant suppression of leukemic cell growth.

Academic Significance and Societal Importance of the Research Achievements

本研究では、遺伝的背景が揃ったTrp53野生型/変異型の細胞を用いることで、Trp53機能欠失に依存した経路の抽出を行った。その結果、これまで白血病で機能が未知であった複数の因子を同定することが可能であった。特定の因子を抑制することで白血病細胞の増殖が抑えられ、患者由来細胞で高発現することも確認された。本研究で得られた知見は、今後の予後不良AMLに対する新規治療開発につながることが期待される。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (6 results)

All 2024 2023 2022

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Central role of the mTORC1 pathway in glucocorticoid activity against B-ALL cells2024

    • Author(s)
      Imanaga Hiroshi、Semba Yuichiro、Sasaki Kensuke、Setoguchi Kiyoko、Maniriho Hillary、Yamauchi Takuji、Terasaki Tatsuya、Hirabayashi Shigeki、Nakao Fumihiko、Nogami Jumpei、Izraeli Shai、Akashi Koichi、Maeda Takahiro
    • Journal Title

      Blood Neoplasia

      Volume: 1 Issue: 2 Pages: 100015-100015

    • DOI

      10.1016/j.bneo.2024.100015

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The RNA helicases DDX19A/B modulate selinexor sensitivity by regulating MCL1 mRNA nuclear export in leukemia cells2024

    • Author(s)
      Terasaki Tatsuya、Semba Yuichiro、Sasaki Kensuke、Imanaga Hiroshi、Setoguchi Kiyoko、Yamauchi Takuji、Hirabayashi Shigeki、Nakao Fumihiko、Akahane Koshi、Inukai Takeshi、Sanda Takaomi、Akashi Koichi、Maeda Takahiro
    • Journal Title

      Leukemia

      Volume: 38 Issue: 9 Pages: 1918-1928

    • DOI

      10.1038/s41375-024-02343-2

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] The XPO7/Npat Axis Inactivation Is a Therapeutic Vulnerability for TP53-Mutated AML2023

    • Author(s)
      Yuichiro Semba, Takuji Yamauchi, Fumihiko Nakao, Jumpei Nogami, Seishi Ogawa, Koichi Akashi and Takahiro Maeda
    • Organizer
      the 65th ASH Annual Meeting and Exposition
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] THE XPO7/NPAT AXIS AS A POTENTIAL THERAPEUTIC TARGET FOR TP53-MUTATED AML2023

    • Author(s)
      Yuichiro Semba, Takuji Yamauchi, Fumihiko Nakao, Jumpei Nogami, Seishi Ogawa, Koichi Akashi and Takahiro Maeda
    • Organizer
      the 2023 FASEB hematological malignancies meeting
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research
  • [Presentation] The XPO7/NPAT axis is a potential therapeutic target for TP53-mutated AML2022

    • Author(s)
      仙波雄一郎、山内 拓司、中尾 文彦、野上 順平、Qiuming Yao、Matthew Canver、増田 豪、Luca Pinello、Daniel Bauer、小川 誠司、赤司 浩一、前田 高宏
    • Organizer
      第84回日本血液学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] The XPO7/Npat Axis Is a Potential Therapeutic Target for TP53-Mutated AML2022

    • Author(s)
      Yuichiro Semba, Takuji Yamauchi, Fumihiko Nakao, Jumpei Nogami, Seishi Ogawa, Koichi Akashi, Takahiro Maeda
    • Organizer
      64TH ASH ANNUAL MEETING AND EXPOSITION
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2026-01-16  

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