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Analysis of molecular mechanism involved in 3D genome structure in the progression of malignant lymphoma

Research Project

Project/Area Number 21K08370
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

Miyazaki Kazuko  京都大学, 医生物学研究所, 研究員 (00311811)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsゲノム構造 / 3Dゲノム構造 / がん / 3Dゲノム構造
Outline of Research at the Start

エンハンサーはプロモーター領域と相互作用し、標的遺伝子の発現を制御することから、クロマチンループを含めたゲノムの3次元(3D)構造制御は、細胞機能にとって非常に重要であると考えられる。一方、癌細胞ではクロマチン制御因子の機能異常が指摘され、正常とは異なる3Dゲノム構造を形成しているが、その意義や分子機構の全容は未解明である。本研究では、3Dゲノム構造の変換が癌特有の遺伝子発現プログラムに寄与するのか、この特有の3Dゲノム構造の形成・維持の分子メカニズムは何か、ということを、独自に作製したリンパ腫発生モデルマウスを活用して解明していく。

Outline of Final Research Achievements

Using our mouse model of malignant lymphoma (Id2/Id3 dKO), we not only compared normal and lymphoma cells, but also examined gene expression, epigenetic changes and genomic structural change during the progression from the activated/precancerous state to lymphoma cells. In the precancerous state, activation of enhancers like super-enhancers, which amplify the expression of target genes, were induced but was not accompanied by changes in 3D genome structure, including TADs and chromatin compartments. On the other hand, with the oncogenic transformation of cells, the activity of enhancers and other factors were conversely reduced, but the genomic structure, including changes in TAD structure, was greatly altered, suggesting that a specific gene expression program is triggered. Further analysis is required to determine how these chromatin changes are induced and how they contribute to the regulation of expression of tumor suppressor genes and other genes.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、悪性リンパ腫の自然発症モデルマウスを用いることで、正常細胞と癌細胞を比較するのみでなく、正常細胞が活性化・前癌状態からがん細胞へと進展する過程での遺伝子発現制御を解析したものであり、 がん進展のメカニズムの理解につながる社会的意義があると思われる。また、生体内における細胞腫特異的な遺伝子発現制御の理解という学術的に非常に重要な課題の解明に貢献するものである。

Report

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

    (8 results)

All 2023 2022 2021 Other

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

  • [Int'l Joint Research] Baylor Institute for Immunology Research(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Hematopoietic cell-derived IL-15 supports NK cell development in scattered and clustered localization within the bone marrow2023

    • Author(s)
      Abe Shinya、Asahi Takuma、Hara Takahiro、Cui Guangwei、Shimba Akihiro、Tani-ichi Shizue、Yamada Kohei、Miyazaki Kazuko、Miyachi Hitoshi、Kitano Satsuki、Nakamura Naotoshi、Kikuta Junichi、Vandenbon Alexis、Miyazaki Masaki、Yamada Ryo、Ohteki Toshiaki、Ishii Masaru、Sexl Veronika、Nagasawa Takashi、Ikuta Koichi
    • Journal Title

      Cell Reports

      Volume: 42 Issue: 9 Pages: 113127-113127

    • DOI

      10.1016/j.celrep.2023.113127

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The E-Id Axis Instructs Adaptive Versus Innate Lineage Cell Fate Choice and Instructs Regulatory T Cell Differentiation2022

    • Author(s)
      Hidaka Reiko、Miyazaki Kazuko、Miyazaki Masaki
    • Journal Title

      Frontiers in Immunology

      Volume: 13 Pages: 1-12

    • DOI

      10.3389/fimmu.2022.890056

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Interplay Between Chromatin Architecture and Lineage-Specific Transcription Factors and the Regulation of Rag Gene Expression.2021

    • Author(s)
      Miyazaki K., Miyazaki M.
    • Journal Title

      Frontiers in Immunology,

      Volume: 12

    • DOI

      10.3389/fimmu.2021.659761

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Evolution of Rag Gene Enhancers and Transcription Factor E and Id proteins in the Adaptive Immune System.2021

    • Author(s)
      Yoshikawa G, Miyazaki K, Ogata H*, Miyazaki M
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 11 Pages: 5888-5888

    • DOI

      10.3390/ijms22115888

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 悪性リンパ腫の進展におけるregulome調節と3Dゲノム構造変容の解析2023

    • Author(s)
      宮崎和子、宮崎正輝
    • Organizer
      日本分子生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Synergistic action between E2A and Notch signal determines the cell fate of T cell versus innate lymphoid cell in the thymus2022

    • Author(s)
      宮崎和子
    • Organizer
      日本免疫学会
    • Related Report
      2022 Research-status Report
  • [Presentation] The Synergic Role of E2A and Notch signaling in T cell lineage-specific enhancer regulome2021

    • Author(s)
      宮崎和子
    • Organizer
      日本免疫学会
    • Related Report
      2021 Research-status Report

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

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