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Role of an intranuclear network organized by SAF-A/RNA supramolecular structure in chromatin dynamics and transcription

Research Project

Project/Area Number 20H03190
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 43010:Molecular biology-related
Research InstitutionJapanese Foundation for Cancer Research

Principal Investigator

NOZAWA Ryusuke  公益財団法人がん研究会, がん研究所 実験病理部, 研究員 (70868710)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2023: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2022: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Keywordsクロマチン / 超解像顕微鏡 / RNA / 転写 / SAF-A / クロマチン構造 / XRN2 / 転写制御 / 超解像イメージング解析 / 超解像顕微鏡解析 / 遺伝子発現制御 / 液-液相分離 / 超解像イメージング
Outline of Research at the Start

転写をはじめとした細胞の基本機能は、多様な構造を形成するクロマチン上において、如何に維持・制御されているか不明な点が多い。これまでに、SAF-A/hnRNP Uタンパク質と核内のRNAとが複合体を形成し、転写活性領域のクロマチン構造の緩んだ状態を維持することを見出した。本課題では、SAF-A/RNA複合体がどのような性質を持った局所環境を転写活性なクロマチン領域に作り出し、そしてその場が如何に転写の維持・制御に寄与するのかを解明することを目指す。

Outline of Final Research Achievements

Cells create diverse microenvironments within the nucleus by concentrating molecules, thereby regulating fundamental cellular functions such as transcription. However, due to limited understanding of the spatial control of related molecules and the dynamics of chromatin polymer, it remains enigmatic how these biochemical reactions proceed appropriately and efficiently. To address this question, we have investigated the morphology and structural properties of the dynamic mesh formed by nuclear RNA and SAF-A (scaffold attachment factor A, or hnRNP U), as well as its mechanistic role in modulating chromatin decompaction. We reveal a novel mechanism whereby newly synthesized RNA interacts with SAF-A, forming an interconnected supramolecular network degraded by the exonuclease XRN2, leading to dynamic cycles of gelation and fluidization. This network decreases protein mobility and regulates chromatin compaction by modulating local viscosity, thereby opening transcriptionally active regions.

Academic Significance and Societal Importance of the Research Achievements

本研究から、転写が誘導するSAF-A/RNAの構造体の形成によって、その局所に粘性がもたらされ、また一方でXRN2が備えるRNAの分解活性により、SAF-A/RNA構造体が破壊される、というダイナミックなサイクルの存在が明らかとなった。本研究成果は、細胞核内の分子の流動性を制御する分子メカニズムの一端を示すともに、SAF-Aの遺伝子変異が同定されている神経変性疾患の細胞病態を理解する新たな視点を提供することが期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (39 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (10 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 8 results) Presentation (20 results) (of which Invited: 3 results) Book (3 results) Remarks (3 results)

  • [Int'l Joint Research] Institute of Genetics and Cancer(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] The University of Edinburgh(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] The University of Edinburgh(英国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Structural evidence for protein-protein interaction between the non-canonical methyl-CpG-binding domain of SETDB proteins and C11orf462024

    • Author(s)
      Mahana Yutaka、Ariyoshi Mariko、Nozawa Ryu-Suke、Shibata Sachiko、Nagao Koji、Obuse Chikashi、Shirakawa Masahiro
    • Journal Title

      Structure

      Volume: 32 Issue: 3 Pages: 304-315.e5

    • DOI

      10.1016/j.str.2023.12.001

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Centromere/kinetochore is assembled through CENP-C oligomerization2023

    • Author(s)
      Hara Masatoshi、Ariyoshi Mariko、Sano Tomoki、Nozawa Ryu-Suke、Shinkai Soya、Onami Shuichi、Jansen Isabelle、Hirota Toru、Fukagawa Tatsuo
    • Journal Title

      Molecular Cell

      Volume: 83 Issue: 13 Pages: 2188-2205.e13

    • DOI

      10.1016/j.molcel.2023.05.023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Human centromere repositioning activates transcription and opens chromatin fibre structure2022

    • Author(s)
      Naughton Catherine、Huidobro Covadonga、Catacchio Claudia R.、Buckle Adam、Grimes Graeme R.、Nozawa Ryu-Suke、Purgato Stefania、Rocchi Mariano、Gilbert Nick
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1

    • DOI

      10.1038/s41467-022-33426-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] MPS1 inhibition primes immunogenicity of KRAS-LKB1 mutant lung cancer2022

    • Author(s)
      Kitajima Shunsuke、Tani Tetsuo、Springer Benjamin F.、Campisi Marco、Osaki Tatsuya、Haratani Koji、Chen Minyue、Knelson Erik H.、Mahadevan Navin R.、Ritter Jessica、Yoshida Ryohei、Kohler Jens、Ogino Atsuko、Nozawa Ryu-Suke、他14名
    • Journal Title

      Cancer Cell

      Volume: 40 Issue: 10 Pages: 1128-1144

    • DOI

      10.1016/j.ccell.2022.08.015

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] RNA impacts formation of biomolecular condensates in the nucleus2021

    • Author(s)
      MATSUI Saho、NOZAWA Ryu-Suke
    • Journal Title

      Biomedical Research

      Volume: 42 Issue: 4 Pages: 153-160

    • DOI

      10.2220/biomedres.42.153

    • NAID

      130008073442

    • ISSN
      0388-6107, 1880-313X
    • Year and Date
      2021-08-12
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Human centromere formation activates transcription and opens chromatin fibre structure2021

    • Author(s)
      Naughton Catherine、Huidobro Covadonga、Catacchio Claudia R.、Buckle Adam、Grimes Graeme R.、Nozawa Ryu-Suke、Purgato Stefania、Rocchi Mariano、Gilbert Nick
    • Journal Title

      BioRxiv

      Volume: -

    • DOI

      10.1101/2021.08.01.454615

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Nuclear microenvironment in cancer: Control through liquid‐liquid phase separation2020

    • Author(s)
      Nozawa Ryu‐Suke、Yamamoto Tatsuro、Takahashi Motoko、Tachiwana Hiroaki、Maruyama Reo、Hirota Toru、Saitoh Noriko
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 9 Pages: 3155-3163

    • DOI

      10.1111/cas.14551

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biological phase separation: cell biology meets biophysics2020

    • Author(s)
      Takuya Yoshizawa、Ryu-Suke Nozawa、Tony Z. Jia、Tomohide Saio、Eiichiro Mori
    • Journal Title

      Biophysical Reviews

      Volume: 12 Issue: 2 Pages: 519-539

    • DOI

      10.1007/s12551-020-00680-x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rare variant of the epigenetic regulator SMCHD1 in a patient with pituitary hormone deficiency.2020

    • Author(s)
      Kinjo K, Nagasaki K, Muroya K, Suzuki E, Ishiwata K, Nakabayashi K, Hattori A, Nagao K, Nozawa R-S, Obuse C, Miyado K, Ogata T, Fukami M and Miyado M.
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 10985-10985

    • DOI

      10.1038/s41598-020-67715-x

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Common Fragile Sites Are Characterized by Faulty Condensin Loading after Replication Stress2020

    • Author(s)
      Boteva Lora、Nozawa Ryu-Suke、Naughton Catherine、Samejima Kumiko、Earnshaw William C.、Gilbert Nick
    • Journal Title

      Cell Reports

      Volume: 32 Issue: 12 Pages: 108177-108177

    • DOI

      10.1016/j.celrep.2020.108177

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ノンコーディングRNAによる染色体分配機構の制御2023

    • Author(s)
      松井紗帆, 野澤竜介, 広田亨
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヒトパピローマウイルスが引き起こす染色体動態異常の意義2023

    • Author(s)
      堀花那子, 瀬下奈々美, 野澤竜介, 広田亨
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 染色体分配を制御するAurora Bキナーゼ集合体の形成機構2023

    • Author(s)
      野澤竜介, 松井紗帆, 広田亨
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 染色体分配を保証するAurora Bキナーゼ反応場2023

    • Author(s)
      野澤竜介
    • Organizer
      北海道大学先端生命科学研究院 研究セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Driving force to concentrate Aurora B activity at inner centromeres:A key cellular function ensuring mitotic fidelity2023

    • Author(s)
      野澤竜介, 松井紗帆, 広田亨
    • Organizer
      第82回日本癌学会学術総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Chromosomal instability induced by supercoiled DNAs arise during replication2023

    • Author(s)
      草野善晴, 野澤竜介, 広田亨
    • Organizer
      第82回日本癌学会学術総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Oncoprotein E6 derived from specific HPV leads to mitotic defect ECAC in cervical preneoplastic lesion2023

    • Author(s)
      瀬下奈々美, 野澤竜介, 古田玲子, 北川知行, 広田亨
    • Organizer
      第82回日本癌学会学術総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] How HP1-Aurora B complex concentrates to centromeres and ensures mitotic fidelity2023

    • Author(s)
      松井紗帆, 野澤竜介, 広田亨
    • Organizer
      第82回日本癌学会学術総会;
    • Related Report
      2023 Annual Research Report
  • [Presentation] 発がん過程においてヒトパピローマウィルスが誘導する染色体動態異常2023

    • Author(s)
      野澤竜介
    • Organizer
      細胞分裂研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 染色体分配を保証するキナーゼ反応場2023

    • Author(s)
      野澤竜介
    • Organizer
      異分野融合研究セミナーiSeminar
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 染色体分配を制御するAurora B反応の形成機構2022

    • Author(s)
      野澤竜介
    • Organizer
      細胞分裂研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Aurora B microenvironment: biomolecular assembly ensuring accurate chromosome segregation2022

    • Author(s)
      野澤竜介
    • Organizer
      第81回日本癌学会学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 染色体配分を制御するAurora B集合体の形成機構2022

    • Author(s)
      野澤竜介
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] セントロメア微小環境における非ドメイン型RNAの機能2022

    • Author(s)
      野澤竜介
    • Organizer
      第2回学術変革領域研究「非ドメイン生物学」班会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] 染色体分配を制御するAurora B集合体の形成機構2022

    • Author(s)
      野澤竜介
    • Organizer
      CREST細胞内ダイナミクス第3回領域会議
    • Related Report
      2022 Annual Research Report
  • [Presentation] 染色体の安定性を保証するAurora B活性制御機構の解明2021

    • Author(s)
      野澤竜介、松井紗帆、広田亨
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] DNA複製に起因する異常クロマチン構造の解消機構破綻から生じるゲノム不安定性2021

    • Author(s)
      草野善晴、野澤竜介、広田亨
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 染色体の安定性に寄与するセントロメアHP1の集合機構2021

    • Author(s)
      松井紗帆、野澤竜介、広田亨
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Spatial-temporal regulation of Aurora B kinase activity through liquid-liquid phase separation2020

    • Author(s)
      Ryu-Suke Nozawa、Toru Hirota
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Chromosomal passenger complex creates a nuclear compartment regulating Aurora B kinase activity through liquid-liquid phase separation2020

    • Author(s)
      Ryu-Suke Nozawa、Toru Hirota
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Book] 相分離 メカニズムと疾患 : ヘテロクロマチンの形成メカニズム2021

    • Author(s)
      野澤竜介、小布施力史
    • Total Pages
      6
    • Publisher
      羊土社
    • ISBN
      9784758103954
    • Related Report
      2021 Annual Research Report
  • [Book] 21. 核マトリックスと核メッシュ. 相分離生物学の全貌(現代化学増刊46)2020

    • Author(s)
      野澤竜介
    • Total Pages
      4
    • Publisher
      東京化学同人
    • ISBN
      9784807913466
    • Related Report
      2020 Annual Research Report
  • [Book] 液-液相分離を介したクロマチン構造と機能の制御 生物工学会誌2020

    • Author(s)
      野澤竜介、原幸大、丁大橋
    • Total Pages
      5
    • Publisher
      公益社団法人 日本生物工学会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 公益財団法人がん研究会がん研究所実験病理部のウェブサイト

    • URL

      https://www.jfcr.or.jp/tci/exppathol/index.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] がん研究所実験病理部 広田亨研究室

    • URL

      http://www.jfcr.or.jp/tci/exppathol/

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] Researchmap (野澤竜介)

    • URL

      https://researchmap.jp/rnozawa

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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