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Elucidation of Transcription Termination Control Mechanisms by DNA Methylation

Research Project

Project/Area Number 21K06123
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43050:Genome biology-related
Research InstitutionHiroshima University

Principal Investigator

Kikuchi Yutaka  広島大学, 統合生命科学研究科(理), 教授 (20286438)

Co-Investigator(Kenkyū-buntansha) 高橋 治子  広島大学, 統合生命科学研究科(理), 助教 (70775767)
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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsDNAメチル化 / 転写終結 / Dnmt3a / ゼブラフィッシュ
Outline of Research at the Start

脊椎動物において、3’-非翻訳領域におけるDNAメチル化の役割に関しては、未だ報告はなされていない。私達は、2種類のDNAメチル基転移酵素遺伝子Dnmt3a欠損変異体(zebrafish・mouse MEF)の全ゲノムバイサルファイトシークエンス(WGBS)或いはRNA seqの解析を行った結果、3’-非翻訳領域のDNA低メチル化と読み通し転写の間に正の相関関係がある可能性を見出した。本研究課題では、Dnmt3a欠損変異体を用いてmRNAの解析・RNA seq解析・クロマチン免疫沈降解析等を行い、脊椎動物共通のDNAメチル化による転写終結位置制御機構の解明を研究目的としている。

Outline of Final Research Achievements

DNA methylation controls transcription initiation and elongation, but the function at transcription termination sites remains unclear. Using Dnmt3a-deficient zebrafish mutants and Dnmt3a-deficient mouse cells (embryonic fibroblasts MEF and neurons), we analyzed the genome regions directly targeted by Dnmt3a and the transcripts produced. As a result, we successfully reported for the first time that in Dnmt3a-deficient mouse neurons, significantly elevated levels of read-through transcription occur in low-methylated protein-coding gene transcription termination sites. Furthermore, in Dnmt3a-deficient zebrafish mutants, we discovered the production of chimeric transcripts between exons of specific genes and downstream genomic regions.

Academic Significance and Societal Importance of the Research Achievements

本研究における学術的意義は、転写を正常に終結させるためには、転写終結位置におけるDNAメチル化が重要である事を示した事である。DNAメチル化は、転写開始や伸長の制御に必要である事が示されてきたが、転写終結位置における機能を明らかにしたのは、私達の研究が世界で初めてである。更に、私達が見出した転写終結異常は、多くのがん細胞において観察されている現象である。そのため、がん細胞におけるDNAメチル異常が、転写終結にも関与している可能性があり、がん治療のターゲットになる事が示唆される。この様な意味において、私達の研究成果は、大きな社会的意義があると考えられる。

Report

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

    (23 results)

All 2023 2022 2021

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (15 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results)

  • [Journal Article] CHRNA1 and its correlated-myogenesis/cell cycle genes are prognosis-related markers of metastatic melanoma2023

    • Author(s)
      Mohamed Nabil Bakr, Haruko Takahashi, Yutaka Kikuchi
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 33 Pages: 101425-101425

    • DOI

      10.1016/j.bbrep.2023.101425

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Microarray transcriptome datasets of maternal-zygotic DNA methyltransferase 3aa -/- zebrafish during early developmental stages2023

    • Author(s)
      Masaki Shirai, Nobuyoshi Shimoda, Haruko Takahashi, Kazuya Takayama, Yutaka Kikuchi
    • Journal Title

      Data in Brief

      Volume: 47 Pages: 108967-108967

    • DOI

      10.1016/j.dib.2023.108967

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of aberrant transcription termination at specific gene loci with DNA hypomethylated transcription termination sites caused by DNA methyltransferase deficiency2022

    • Author(s)
      Masaki Shirai, Takuya Nara, Haruko Takahashi, Kazuya Takayama, Yuan Chen, Yudai Hirose, Masashi Fujii, Akinori Awazu, Nobuyoshi Shimoda, and Yutaka Kikuchi
    • Journal Title

      Genes & Genetic Systems

      Volume: 97 Issue: 3 Pages: 139-152

    • DOI

      10.1266/ggs.21-00092

    • ISSN
      1341-7568, 1880-5779
    • Year and Date
      2022-06-01
    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of Melanoma Gene Expression Signatures at the Single-Cell Level Uncovers 45-Gene Signature Related to Prognosis2022

    • Author(s)
      Mohamed Nabil Bakr, Haruko Takahashi, Yutaka Kikuchi
    • Journal Title

      Biomedicines

      Volume: 10 Issue: 7 Pages: 1478-1478

    • DOI

      10.3390/biomedicines10071478

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Methylome data derived from maternal-zygotic DNA methyltransferase 3aa-/- zebrafish2022

    • Author(s)
      Masaki Shirai, Kazuya Takayama, Haruko Takahashi, Yudai Hirose, Masashi Fujii, Akinori Awazu, Nobuyoshi Shimoda, Yutaka Kikuchi
    • Journal Title

      Data in Brief

      Volume: 44 Pages: 108514-108514

    • DOI

      10.1016/j.dib.2022.108514

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Understanding Breast Cancers through Spatial and High-Resolution Visualization Using Imaging Technologies2022

    • Author(s)
      Haruko Takahashi, Daisuke Kawahara, Yutaka Kikuchi
    • Journal Title

      Cancers

      Volume: 14 Issue: 17 Pages: 4080-4080

    • DOI

      10.3390/cancers14174080

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiomic Analysis for Pretreatment Prediction of Recurrence Post-Radiotherapy in Cervical Squamous Cell Carcinoma Cancer2022

    • Author(s)
      Daisuke Kawahara, Ikuno Nishibuchi, Masashi Kawamura, Takahito Yoshida, Iemasa Koh, Katsuyuki Tomono, Masaki Sekine, Haruko Takahashi, Yutaka Kikuchi, Yoshiki Kudo, Yasushi Nagata
    • Journal Title

      Diagnostics

      Volume: 12 Issue: 10 Pages: 2346-2346

    • DOI

      10.3390/diagnostics12102346

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 転写終結の制御機構と疾病に与える影響2022

    • Author(s)
      白井均樹、菊池裕
    • Journal Title

      月刊「細胞」

      Volume: 11 Pages: 37-39

    • Related Report
      2022 Research-status Report
  • [Presentation] ゲノム配列はクロマチン動態と関連する2023

    • Author(s)
      奈良 拓也, 高橋 治子, 粟津 暁紀, 菊池 裕
    • Organizer
      2023年日本バイオインフォマティクス学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] リピート DNA 配列から染色体内および染色体間の動態の法則を探る2023

    • Author(s)
      奈良 拓也, 高橋 治子, 粟津 暁紀, 菊池 裕
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Defects of tendon stem/progenitor cells (TSPCs) formation in Scleraxis KO mice2023

    • Author(s)
      Weiyou Sun, Haruko Takahashi, Yuki Yoshimoto, Yasuyuki Ohkawa, Chisa Shukunami, Yutaka Kikuchi
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Analysis of gene expression regulation involved in drug/stress resistance in cancer stem-like cells2023

    • Author(s)
      Leyan Cao, Haruko Takahashi, Yutaka Kikuchi, Mayuko Nishi, Akihide Ryo
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] マウス胎児期における運動器の筋―腱接合部形成過程の統合的解析2022

    • Author(s)
      高橋治子、菊池裕
    • Organizer
      日本分子生物学会年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Correlation between nuclear membrane-less organelle positioning in the nucleus and chromatin rheology.2022

    • Author(s)
      Takuya Nara, Haruko Takahashi, Yutaka Kikuchi
    • Organizer
      日本バイオインフォマティクス学会年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Correlation between Nuclear Membrane-less Organelle Positioning and Chromatin Rheology2022

    • Author(s)
      Takuya Nara, Haruko Takahashi, Yutaka Kikuchi
    • Organizer
      The International Conference on Bioinformatics (InCoB2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] テンソル分解法を用いた広範の癌種で共通に認められる染色体の立体構造異常の探索2022

    • Author(s)
      奈良拓也, 合田佑希, 高橋治子, 菊池裕
    • Organizer
      日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Identification of aberrant transcription termination at specific gene loci with DNA hypomethylated transcription termination sites caused by DNA methyltransferase deficiency2022

    • Author(s)
      Masaki Shirai, Takuya Nara, Haruko Takahashi, Kazuya Takayama, Yuan Chen, Yudai Hirose, Masashi Fujii, Akinori Awazu, Nobuyoshi Shimoda, Yutaka Kikuchi
    • Organizer
      日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Mechanisms of nuclear stress granule positioning in the nucleus via rheological properties of chromatin2022

    • Author(s)
      Takuya Nara, Haruko Takahashi, Yutaka Kikuchi
    • Organizer
      日本生物物理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] The association between epigenetic marks on 3’-untranslated region and transcriptional termination defects in mammals.2021

    • Author(s)
      Takuya Nara, Masaki Shirai, Haruko Takahashi and Yutaka Kikuchi
    • Organizer
      日本バイオインフォマティクス学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 次元削減手法を用いた画像・遺伝子統合解析によるがん診断基盤の構築2021

    • Author(s)
      Yasuhisa Yamamoto, Hisanori Yoshimura, Haruko Takahashi, Daisuke Kawahara and Yutaka Kikuchi
    • Organizer
      日本バイオインフォマティクス学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Engineering-assisted muscle-tendon assemble organoids (assembloids) for analysis of musculotendinous junction formation mechanism2021

    • Author(s)
      高橋 治子, 李 欣瑜, 雲山 一慧, かく若麟, 池田 皓, 徐 銘聡, 永樂 元次, 菊池 裕
    • Organizer
      日本分子生物学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 哺乳類における機能的な読み通し転写と関連する3’末端非翻訳領域のエピジェネティックな状態2021

    • Author(s)
      奈良拓也、白井均樹、高橋治子、菊池 裕
    • Organizer
      日本分子生物学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 医療画像および遺伝子発現データの統合解析によるがん診断基盤の構築2021

    • Author(s)
      山本 泰久, 好村 尚記, 高橋 治子, 河原 大輔, 菊池 裕
    • Organizer
      日本分子生物学会
    • Related Report
      2021 Research-status Report

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

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