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Molecular mechanism to induce intracellular phase separation by RNA tangling

Research Project

Project/Area Number 19K22374
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 InstitutionOsaka University (2020)
Hokkaido University (2019)

Principal Investigator

Hirose Tetsuro  大阪大学, 生命機能研究科, 教授 (30273220)

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)
KeywordsRNA / 超分子複合体 / 核構造・機能 / タンパク質 / noncoding RNA / RNA-RNA相互作用 / 相分離 / 非膜性構造体
Outline of Research at the Start

膜を介さずに特定の因子を液滴内の局所空間に隔離する細胞内相分離に大きな注目が集まっている。これらの研究はタンパク質の天然変性領域を介した現象として盛んに研究されている。一方で、本研究ではRNAが誘発する相分離に注目し、RNA合成段階でのRNA同士の複数の短い相互作用(いわゆるRNAの「もつれ」)によるRNA相分離の分子機構とその意義を解明するため、細胞内とin vitroの双方から解析を行う。

Outline of Final Research Achievements

NEAT1 lncRNA acts as the structural scaffold of phase separated nuclear body paraspeckles. NEAT1 forms a U-shape configuration with bundled terminal regions and each of the terminal and the central NEAT1 regions is assigned in the specific paraspeckle area. We investigated the possibility that short RNA-RNA interactions or RNA tangling contributes to the NEAT1 configuration and spatial assignment using CRISPR/Cas9 meditated mutagenesis. We found that the deletion of both terminal regions disrupt the organized paraspeckle structures and U-shape formation of NEAT1, suggesting the RNA tangling contributes to form the paraspeckle fine structure.

Academic Significance and Societal Importance of the Research Achievements

細胞内相分離は、細胞内を膜構造を使わずに区画化する機構として大きな注目を集めている。さらに神経変性疾患の発症などに深く関わる可能性が浮上している。本研究で示唆されたRNAのもつれによって相分離構造の微細な内部構造が決定されている可能性は、細胞内の様々な部位でRNAの発現に応じて一過的に形成される相分離構造を、RNAの配列に基づいて理解し、さらに人為的にコントロールするための基盤知見となりうる。一方で、RNAのもつれは、ゲノムから合成されている様々な種類のRNAにおいて起こりうる現象であり、これによって各RNAの運命が決定されている可能性も浮上した。

Report

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

    (23 results)

All 2021 2020 2019 Other

All Int'l Joint Research (4 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 10 results) Remarks (1 results)

  • [Int'l Joint Research] University of Western Australia(オーストラリア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] CNRS(フランス)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Western Australia(オーストラリア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] CNRS(フランス)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Paraspeckles are constructed as block copolymer micelles.2021

    • Author(s)
      Tomohiro Yamazaki, Tetsuya Yamamoto, Hyura Yoshino, Sylvie Souquere, Shinichi Nakagawa, Gerard Pierron, Tetsuro Hirose
    • Journal Title

      EMBO Journal

      Volume: - Issue: 12

    • DOI

      10.15252/embj.2020107270

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CRISPR-mediated mutagenesis of long noncoding RNAs2021

    • Author(s)
      Yamazaki T., Hirose T.
    • Journal Title

      Methods in Molecular Biology

      Volume: 2254 Pages: 283-303

    • DOI

      10.1007/978-1-0716-1158-6_18

    • ISBN
      9781071611579, 9781071611586
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase separation driven by production of architectural RNA transcripts.2020

    • Author(s)
      Tetsuya Yamamoto, Tomohiro Yamazaki, Tetsuro Hirose
    • Journal Title

      Soft matter

      Volume: 16 Issue: 19 Pages: 4692-4698

    • DOI

      10.1039/c9sm02458a

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ゲノムの暗黒物質はどこまで解明されたか2020

    • Author(s)
      廣瀬哲郎
    • Journal Title

      北海道医学雑誌

      Volume: 95 Pages: 99-101

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Short Tandem Repeat-Enriched Architectural RNAs in Nuclear Bodies: Functions and Associated Diseases2020

    • Author(s)
      Ninomiya Kensuke、Hirose Tetsuro
    • Journal Title

      Non-Coding RNA

      Volume: 6 Issue: 1 Pages: 6-6

    • DOI

      10.3390/ncrna6010006

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Architectural RNAs for Membraneless Nuclear Body Formation2020

    • Author(s)
      Yamazaki T., Nakagawa S., Hirose T.
    • Journal Title

      Cold Spring Harbor Symposia on Quantitative Biology

      Volume: LXXXIV Pages: 1-11

    • DOI

      10.1101/sqb.2019.84.039404

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] LncRNA ‐dependent nuclear stress bodies promote intron retention through SR protein phosphorylation2019

    • Author(s)
      Ninomiya Kensuke、Adachi Shungo、Natsume Tohru、Iwakiri Junichi、Terai Goro、Asai Kiyoshi、Hirose Tetsuro
    • Journal Title

      The EMBO Journal

      Volume: 39 Issue: 3

    • DOI

      10.15252/embj.2019102729

    • NAID

      120006876293

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two distinct nuclear stress bodies containing different sets of RNA-binding proteins are formed with HSATIII architectural noncoding RNAs upon thermal stress exposure2019

    • Author(s)
      Aly Mahmoud Khamis、Ninomiya Kensuke、Adachi Shungo、Natsume Tohru、Hirose Tetsuro
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 516 Issue: 2 Pages: 419-423

    • DOI

      10.1016/j.bbrc.2019.06.061

    • NAID

      120006878349

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 非コードRNAによる相分離構造体の形成と機能制御2021

    • Author(s)
      廣瀬哲郎
    • Organizer
      第112回 未来医療セミナー
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] HSATIII IncRNAs dictate primate-specific response to thermal stress through the dual mechanisms of splicing control2020

    • Author(s)
      二宮賢介, 廣瀬哲郎
    • Organizer
      第43回 日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 非コードRNAによる相分離構造体の形成と機能制御2020

    • Author(s)
      廣瀬哲郎
    • Organizer
      核酸医薬シンポジウム 2020
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] ノンコーディングRNAによる核内構造体アーキテクチュア2020

    • Author(s)
      廣瀬哲郎
    • Organizer
      第79回 日本癌学会 学術総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Formation and function of phase separated nuclear bodies formed by architectural RNAs2020

    • Author(s)
      廣瀬哲郎
    • Organizer
      第93回 日本生化学会大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Formation of phase separated membrane-less nuclear bodies by long noncoding RNA2019

    • Author(s)
      Tetsuro Hirose
    • Organizer
      EMBO workshop, RNP network dynamics in development and disease
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Architectural noncoding RNA controlling liquid-liquid phase separation2019

    • Author(s)
      Tetsuro Hirose
    • Organizer
      84th Cold Spring Harbor Laboratory Symposium on Quantitative Biology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ノンコーディングRNAによる核内相分離構造体の形成機構2019

    • Author(s)
      廣瀬哲郎
    • Organizer
      第38回日本認知症学会学術集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] ノンコーディング RNA による相分離構造体の形成機構2019

    • Author(s)
      廣瀬哲郎
    • Organizer
      日本リウマチ学会 第6回JCRベーシックリサーチカンファレンス
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 細胞内の相分離構造体形成を主導するRNAの役割2019

    • Author(s)
      廣瀬哲郎
    • Organizer
      日本化学会秋季事業 第9回CSJ化学フェスタ2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Remarks] ノンコーディングRNA構造体nSBの新機能を発見~温度を感知したリン酸化反応の「るつぼ」として働く~

    • URL

      https://www.hokudai.ac.jp/news/2019/12/rnansb.html

    • Related Report
      2019 Research-status Report

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

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