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Elucidation of liquid phase separation by Mediator complex and its role in transcription regulation

Research Project

Project/Area Number 19K22401
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionYokohama City University

Principal Investigator

TAKAHASHI Hidehisa  横浜市立大学, 医学研究科, 教授 (30423544)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords遺伝子発現制御 / 転写 / RNAポリメラーゼII / 転写制御 / 液ー液相分離 / メディエーター / 液相形成 / Phase separation
Outline of Research at the Start

本研究では、解明が進んでいない転写における液相の機能を明らかにする。これは細胞内における転写反応の詳細な理解に欠かせない取り組みである。液滴様の構造は核内のみならず、高分子が混み合った細胞質でも形成され、細胞内を高度に区画化していると考えられる。このように、本研究での知見は、DNA複製・修復・組換え、細胞内シグナル伝達、細胞増殖・分化などの他の生命科学分野にも活かされことが期待できる

Outline of Final Research Achievements

Recent studies revealed that transcription by RNA polymerase II (Pol II) is regulated within compartmentalized liquid droplets. In this mechanism called liquid-liquid phase separation, factors involved in transcription regulation including proteins, DNA, and RNA are associated through intrinsically disordered Region (IDR) to form liquid droplets. In this study, we elucidate the mechanism of liquid droplets formation by Mediator complex and its role in transcription regulation.

Academic Significance and Societal Importance of the Research Achievements

近年の研究から、転写は核内に形成される“液滴”によって、制御されることが明らかとなってきた。本研究では、転写制御で重要な役割を果たすメディエーター複合体に着目し、その液滴形成機構と転写制御における役割を解明する。本研究によって、転写制御機構における液滴の役割を詳細に解明することで、DNA複製・修復、細胞内シグナル伝達などの他の細胞機能における液滴機構の解明にも貢献することが期待される。さらに、メディエーター複合体は様々な疾患の発症にも関与していることから、本研究は液滴形成の破綻による疾患発症メカニズムの解明にもつながることが期待される。

Report

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

    (15 results)

All 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (4 results) (of which Invited: 1 results) Remarks (2 results)

  • [Int'l Joint Research] ストワーズ医学研究所(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ストワーズ医学研究所(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Gain-of-Function MN1 Truncation Variants Cause a Recognizable Syndrome with Craniofacial and Brain Abnormalities2020

    • Author(s)
      Miyake Noriko et al., Matsumoto Naomichi
    • Journal Title

      The American Journal of Human Genetics

      Volume: 106 Issue: 1 Pages: 13-25

    • DOI

      10.1016/j.ajhg.2019.11.011

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The role of Mediator and Little Elongation Complex in transcription termination2020

    • Author(s)
      Takahashi H, Ranjan A, Chen S, Suzuki H, Shibata M, Hirose T, Hirose H, Sasaki K, Abe R, Chen K, He Y, Zhang Y, Takigawa I, Tsukiyama T, Watanabe M, Fujii S, Iida M, Yamamoto J, Yamaguchi Y, Suzuki Y, Matsumoto M, Nakayama KI, Washburn P, Saraf A, Florens L, Sato S, Tomomori-Sato C, Conaway RC, Conaway JW, Hatakeyama S
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 1-20

    • DOI

      10.1038/s41467-020-14849-1

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Shank2 Binds to aPKC and Controls Tight Junction Formation with Rap1 Signaling during Establishment of Epithelial Cell Polarity2020

    • Author(s)
      Sasaki Kazunori、Kojitani Noriko、Hirose Hiroko、Yoshihama Yohei、Suzuki Hidefumi、Shimada Miho、Takayanagi Ayumi、Yamashita Akio、Nakaya Masa-aki、Hirano Hisashi、Takahashi Hidehisa、Ohno Shigeo
    • Journal Title

      Cell Reports

      Volume: 31 Issue: 1 Pages: 107407-107407

    • DOI

      10.1016/j.celrep.2020.02.088

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] NONO is a negative regulator for SOX2 promoter.2020

    • Author(s)
      Liang S, Takahashi H, Hirose T, Kuramitsu Y, Hatakeyama S, Yoshiyama H, Wang R, Hamada J, Iizasa H.
    • Journal Title

      Cancer Genomics & Proteomics

      Volume: 17 Issue: 4 Pages: 359-367

    • DOI

      10.21873/cgp.20195

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bromodomain-containing protein 4 regulates interleukin-34 expression in mouse ovarian cancer cells2020

    • Author(s)
      Han Nanumi、Anwar Delnur、Hama Naoki、Kobayashi Takuto、Suzuki Hidefumi、Takahashi Hidehisa、Wada Haruka、Otsuka Ryo、Baghdadi Muhammad、Seino Ken-ichiro
    • Journal Title

      Inflammation and Regeneration

      Volume: 40 Issue: 1 Pages: 25-26

    • DOI

      10.1186/s41232-020-00129-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A phospho-switch controls RNF43-mediated degradation of Wnt receptors to suppress tumorigenesis2020

    • Author(s)
      Tsukiyama Tadasuke、Zou Juqi、Kim Jihoon、Ogamino Shohei、Shino Yuki、Masuda Takamasa、Merenda Alessandra、Matsumoto Masaki、Fujioka Yoichiro、Hirose Tomonori、Terai Sayuri、Takahashi Hidehisa、Ishitani Tohru、Nakayama Keiichi I.、Ohba Yusuke、Koo Bon-Kyoung、Hatakeyama Shigetsugu
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 1-16

    • DOI

      10.1038/s41467-020-18257-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A substrate-trapping strategy to find E3 ubiquitin ligase substrates identifies Parkin and TRIM28 targets2020

    • Author(s)
      Watanabe Masashi、Saeki Yasushi、Takahashi Hidehisa、Ohtake Fumiaki、Yoshida Yukiko、Kasuga Yusuke、Kondo Takeshi、Yaguchi Hiroaki、Suzuki Masanobu、Ishida Hiroki、Tanaka Keiji、Hatakeyama Shigetsugu
    • Journal Title

      Communications Biology

      Volume: 3 Issue: 1 Pages: 592-592

    • DOI

      10.1038/s42003-020-01328-y

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] メディエーター複合体による転写終結制御機構の解明2019

    • Author(s)
      高橋 秀尚, Amol Ranjan, 鈴木 秀文, 阿部 竜太, 廣瀬 智威, 佐々木 和教, 山口 雄輝, 中山 敬一, Joan Conaway, Ronald Conaway, 畠山 鎮次
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] メディエーターは2つの異なる核内凝集体を結びつけることによって転写終結を制御する2019

    • Author(s)
      鈴木 秀文, 阿部 竜太, 安井 七海, 高橋 秀尚
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] クロマチン構造変換を伴った遺伝子発現制御機構2019

    • Author(s)
      嶋田 美穂, 中太 智義, 高橋 秀尚, Robert G.Roeder
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] メディエーター複合体による転写制御機構の解明2019

    • Author(s)
      高橋 秀尚
    • Organizer
      第91回日本遺伝学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] https://ycu-molecularbiology.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] ホームページ

    • URL

      https://ycu-molecularbiology.jp/

    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2022-01-27  

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