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Leukemic development through chromosomal translocation with super-enhancer exchange

Research Project

Project/Area Number 18K16090
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Kubota Sho  熊本大学, 国際先端医学研究機構, 特定事業研究員 (70747831)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsBPDCN / エンハンサー / エピジェネティクス / 白血病 / 染色体転座 / スーパーエンハンサー / エピゲノム / RUNX2 / MYC / Super-enhancer / enhancer hijacking
Outline of Final Research Achievements

Blastic plasmacytoid dendritic cell neoplasm (BPDCN) is an aggressive acute leukemia, which appears to be originated from the precursor of plasmacytoid dendritic cells (pDCs). Chromosomal translocation (6;8)(p21;q24) is often seen in BPDCN patients. RUNX2, located on chromosome 6p21, has been shown to regulate the differentiation of pDCs. We found that expression of RUNX2 and C-MYC, an potent oncogene, were significantly up-regulated in BPDCN bone marrow cells in patients as well as a cell line, CAL-1, harboring t(6;8)(p21;q24). Given that RUNX2 appeared to be critical for the development of BPDCN, we explored the mechanism of pathogenesis of BPDCN driven by t(6;8).

Academic Significance and Societal Importance of the Research Achievements

がん遺伝子MYCの活性化機構として、従来、MYC遺伝子増幅や染色体転座によるプロモーターの置換が知られていた。また、組織特異的なエンハンサーが異常に活性化する膵臓がん、大腸がんや急性リンパ性白血病の場合もある。本研究では、染色体相互転座によって、c-MYCエンハンサーがRUNX2を、RUNX2スーパーエンハンサーがc-MYC発現を異常に活性化する機構を明らかにした。こうした染色体転座によって交換・活性化されたがん特異的エンハンサーによるBPDCN発症機構の解明は、MYCの新規活性化機構だけに限らず、新たながん発症メカニズムの視点を与えた独創的な研究である。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018 Other

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

  • [Int'l Joint Research] National University of Singapore(シンガポール)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Universiti Malaysia Sarawak(マレーシア)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Overexpression of RUNX3 Represses RUNX1 to Drive Transformation of Myelodysplastic Syndrome2020

    • Author(s)
      Yokomizo-Nakano Takako、Kubota Sho、Bai Jie、Hamashima Ai、Morii Mariko、Sun Yuqi、Katagiri Seiichiro、Iimori Mihoko、Kanai Akinori、Tanaka Daiki、Oshima Motohiko、Harada Yuka、Ohyashiki Kazuma、Iwama Atsushi、Harada Hironori、Osato Motomi、Sashida Goro
    • Journal Title

      Cancer Research

      Volume: 80 Issue: 12 Pages: 2523-2536

    • DOI

      10.1158/0008-5472.can-19-3167

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Low prevalence of the BCR-ABL1 fusion gene in a normal population in southern Sarawak.2020

    • Author(s)
      Kuan JW, Su AT, Tay SP, Fong IL, Kubota S, Su'ut L, Osato M, Sashida G.
    • Journal Title

      International Journal of Hematology

      Volume: 111 Issue: 2 Pages: 217-224

    • DOI

      10.1007/s12185-019-02768-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Lineage-specific RUNX2 super-enhancer activates MYC via a chromosomal translocation and promotes the development of blastic plasmacytoid dendritic cell neoplasm2019

    • Author(s)
      Kubota S, Tokunaga K, Umezu T, Yokomizo-Nakano T, Oshima M, Tan KT, Yang H, Kanai A. Iwanaga E, Asou N, Maeda T, Nakagata N. Ito T, Iwama A. Ohyashiki K, Osato M, Sashida G.
    • Journal Title

      Nat Commun

      Volume: 10 Issue: 1 Pages: 1653-1653

    • DOI

      10.1038/s41467-019-09710-z

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ascl1-induced Wnt11 regulates neuroendocrine differentiation, cell proliferation, and E-cadherin expression in small-cell lung cancer and Wnt11 regulates small-cell lung cancer biology2019

    • Author(s)
      Tenjin Yuki、Kudoh Shinji、Kubota Sho、Yamada Tatsuya、Matsuo Akira、Sato Younosuke、Ichimura Takaya、Kohrogi Hirotsugu、Sashida Goro、Sakagami Takuro、Ito Takaaki
    • Journal Title

      Laboratory Investigation

      Volume: 99 Issue: 11 Pages: 1622-1635

    • DOI

      10.1038/s41374-019-0277-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The age-specific induction of MLL-AF9 regulates the leukemic transformation2019

    • Author(s)
      Ayaka Maeda, Sho Kubota, Yuqi Sun, Kimi Araki, Motomi Osato, and Goro Sashida
    • Organizer
      日本血液学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 樹状細胞特異的RUNX2スーパーエンハンサーによるMYCの活性化を介したBPDCNの発症メカニズムの解析2018

    • Author(s)
      久保田翔, 梅津知宏, 岩間厚志, 大屋敷一馬, 大里元美, 指田吾郎
    • Organizer
      第77回日本癌学会学術総会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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