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Intracellular delivery and gene expression analysis of modified chromatin fibers encapsulated in artificial membranes

Research Project

Project/Area Number 20K21406
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 InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Umehara Takashi  国立研究開発法人理化学研究所, 生命機能科学研究センター, チームリーダー (20415095)

Co-Investigator(Kenkyū-buntansha) 神谷 厚輝  群馬大学, 大学院理工学府, 助教 (70612315)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywordsアセチル化 / エピゲノム / クロマチン / ヌクレオソーム / リポソーム / 細胞膜 / 遺伝子発現 / DNA / 人工細胞膜
Outline of Research at the Start

本研究では、エピジェネティクス情報を含む長鎖クロマチンを人工細胞膜内に再構成し、それを培養細胞に導入する新規技術を開発する。遺伝子ベクターとミニ染色体を利用する従来技術では、任意のエピジェネティクス情報を持つ長鎖エピゲノムDNAを哺乳細胞に導入できない。そこで、De novoで人工エピゲノム断片を試験管内で再構成し、それを人工細胞膜内に封入して哺乳細胞内に長鎖DNAを送達させる技術を開発する。これにより、細胞を介した調製過程を要する従来法よりも高い拡張性でエピゲノム断片の細胞内送達を目指すとともに、エピゲノム修飾情報とDNA代謝反応量の相関を定量解析する技術基盤の確立を目指す。

Outline of Final Research Achievements

In this study, we aimed to develop techniques to reconstitute nucleosomes with designed histone modifications in vitro, encapsulate them into artificial cell membrane-based liposomes to introduce chromatin into cells, and evaluated them in DNA-mediated reactions in vitro. As a result, we found the reconstitution conditions to encapsulate long nucleosomes into a liposome. We also found that acetylation of the N-terminal tail of histone H2B locally destabilizes the reconstituted nucleosome. Furthermore, by encapsulating gene transcription cassettes in cell-sized liposomes, we established an experimental system to observe transcription and translation reactions in liposomes with good reproducibility.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、細胞サイズの人工リポソームにおいて遺伝子の転写反応とタンパク質の翻訳反応を分割してその産物量を継時的に測定する試験管内反応系が確立できた。これにより、従来技術の無細胞転写・翻訳系では解析することが困難だったセントラルドグマの反応素過程ごとの制御分子機構を数学的に記述するための方法論の確立に道筋がついた点に学術的な意義がある。また、長鎖のヌクレオソームを人工膜リポソームに封入する技術が確立できた点も細胞へのエピゲノム断片の導入技術開発に向けて学術的な意義があったと考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (2 results)

  • [Journal Article] Chemical Inhibitors Targeting the Histone Lysine Demethylase Families with Potential for Drug Discovery2023

    • Author(s)
      Das Nando Dulal、Niwa Hideaki、Umehara Takashi
    • Journal Title

      Epigenomes

      Volume: 7 Issue: 1 Pages: 7-7

    • DOI

      10.3390/epigenomes7010007

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Elucidation of binding preferences of YEATS domains to site-specific acetylated nucleosome core particles2022

    • Author(s)
      Kikuchi Masaki、Morita Satoshi、Goto Mie、Wakamori Masatoshi、Katsura Kazushige、Hanada Kazuharu、Shirouzu Mikako、Umehara Takashi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 298 Issue: 8 Pages: 102164-102164

    • DOI

      10.1016/j.jbc.2022.102164

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Design and Synthesis of Tranylcypromine-Derived LSD1 Inhibitors with Improved hERG and Microsomal Stability Profiles2022

    • Author(s)
      Koda Yasuko、Sato Shin、Yamamoto Hirofumi、Niwa Hideaki、Watanabe Hisami、Watanabe Chiduru、Sato Tomohiro、Nakamura Kana、Tanaka Akiko、Shirouzu Mikako、Honma Teruki、Fukami Takehiro、Koyama Hiroo、Umehara Takashi
    • Journal Title

      ACS Medicinal Chemistry Letters

      Volume: 13 Issue: 5 Pages: 848-854

    • DOI

      10.1021/acsmedchemlett.2c00120

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure-activity relationship and in silico evaluation of cis- and trans-PCPA-derived inhibitors of LSD1 and LSD2.2022

    • Author(s)
      Niwa, H.; Watanabe, C.; Sato, S.; Harada, T.; Watanabe, H.; Tabusa, R.; Fukasawa, S.; Shiobara, A.; Hashimoto, T.; Ohno, O.; Nakamura, K.; Tsuganezawa, K.; Tanaka, A.; Shirouzu, M.; Honma, T.; Matsuno, K.; Umehara, T.
    • Journal Title

      ACS Med. Chem. Lett.

      Volume: 13 Issue: 9 Pages: 1485-1492

    • DOI

      10.1021/acsmedchemlett.2c00294

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epidrugs: Toward Understanding and Treating Diverse Diseases2022

    • Author(s)
      Umehara Takashi
    • Journal Title

      Epigenomes

      Volume: 6 Issue: 3 Pages: 18-18

    • DOI

      10.3390/epigenomes6030018

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantification of the effect of site-specific histone acetylation on chromatin transcription rate2020

    • Author(s)
      Wakamori Masatoshi、Okabe Kohki、Ura Kiyoe、Funatsu Takashi、Takinoue Masahiro、Umehara Takashi
    • Journal Title

      Nucleic Acids Research

      Volume: 48 Issue: 22 Pages: 12648-12659

    • DOI

      10.1093/nar/gkaa1050

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Epigenetic mechanisms to propagate histone acetylation by p300/CBP2023

    • Author(s)
      Kikuchi, M., Morita, S., Wakamori, M., Sato, S., Uchikubo-Kamo, T., Shirouzu, M., Umehara, T.
    • Organizer
      RIKEN BDR Symposium 2023: Transitions in Biological Systems
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] p300はヒストンのアセチル化をどのように伝播するのか?2023

    • Author(s)
      菊地正樹, 森田 鋭, 若森昌聡, 佐藤 心, 内窪-加茂友美, 白水美香子, 梅原崇史
    • Organizer
      第143回日本薬学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 膜透過性ペプチド-タンパク質複合体によるリポソーム内へのタンパク質の輸送2023

    • Author(s)
      三輪明星, 神谷厚輝
    • Organizer
      日本化学会 第103春季年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Binding preferences of YEATS domains to acetylated nucleosomes2022

    • Author(s)
      Umehara, T.
    • Organizer
      FASEB The Reversible Protein Acetylation in Health and Disease Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 膜透過性ペプチドによる膜の非対称性に依存したタンパク質のベシクル内への輸送2022

    • Author(s)
      三輪明星, 神谷厚輝
    • Organizer
      細胞を創る研究会 15.0
    • Related Report
      2022 Annual Research Report
  • [Presentation] 膜透過性ペプチドとリポソームの相互作用における膜組成の影響2022

    • Author(s)
      三輪明星, 神谷厚輝
    • Organizer
      日本化学会 第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 膜透過性ペプチドと非対称膜リポソームの相互作用の観察2021

    • Author(s)
      三輪明星, 神谷厚輝
    • Organizer
      細胞を創る研究会 14.0
    • Related Report
      2021 Research-status Report
  • [Presentation] 組合せ化学修飾情報のゲノム規模マッピング2021

    • Author(s)
      梅原崇史
    • Organizer
      第141回 日本薬学会年会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Quantifying the effect of epigenetic modification on chromatin transcription2020

    • Author(s)
      Umehara, T.
    • Organizer
      第58回 日本生物物理学会年会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Remarks] 理化学研究所 生命機能科学研究センター エピジェネティクス制御研究チーム

    • URL

      https://www.riken.jp/research/labs/bdr/epigen_drug_discov/

    • Related Report
      2021 Research-status Report 2020 Research-status Report
  • [Remarks] 生命機能科学研究センター エピジェネティクス制御研究チーム

    • URL

      https://www.bdr.riken.jp/jp/research/labs/umehara-t/index.html

    • Related Report
      2021 Research-status Report 2020 Research-status Report

URL: 

Published: 2020-08-03   Modified: 2024-01-30  

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