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Development of eukaryotic riboswitches that use their ligands catalytically

Research Project

Project/Area Number 19K05697
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 37010:Bio-related chemistry
Research InstitutionEhime University

Principal Investigator

Ogawa Atsushi  愛媛大学, プロテオサイエンスセンター, 准教授 (30442940)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsリボスイッチ / 発現制御 / アプタマー / リボザイム / アプタザイム
Outline of Research at the Start

『分子応答性の遺伝子発現制御システム』である『リボスイッチ』を“自在に”構築できれば、任意分子の濃度に応じて任意タンパク質の生産量をコントロールすることができるため、幅広い学問領域において重要な基盤技術となるのは疑う余地がない。しかし、真核系で働く既存の人工リボスイッチは未だ発展途上で、主に効率面での改善が望まれている。そこで本研究では、制御分子を触媒的に再利用することで効率の良い遺伝子発現制御を可能とする『ターンオーバー型リボスイッチ』の開発を目指す。

Outline of Final Research Achievements

We used theophylline and its aptamer as a model pair to create aptazymes that use the molecule (theophylline) catalytically. We also constructed eukaryotic riboswitches that respond to short nucleic acids or peptides, and established a method to rationally expand the variety of regulatory molecules for the former. On the other hand, to increase the expression efficiency of these riboswitches in the ON state, we developed an efficient transcription-translation coupled system for eukaryotic expression, in addition to optimizing untranslated regions of mRNA. Furthermore, we successfully created supergiant artificial cells to investigate riboswitch functions in vitro. By combining these technologies, we finally constructed prototypes of three different eukaryotic riboswitches that use their ligand molecules catalytically.

Academic Significance and Societal Importance of the Research Achievements

リボスイッチは、mRNAの非翻訳領域に存在し、特定の分子に応答して遺伝子発現を制御するRNA素子である。これまでに天然において数種類のリボスイッチが同定されてきたが、mRNAを上手く改変することで、人工的にも構築可能である。しかし、特に真核発現系で機能する人工リボスイッチの制御効率は悪く、その改善が望まれていた。本研究では、制御分子を触媒的に再利用することで効率の良い発現制御を可能とする『ターンオーバー型真核系人工リボスイッチ』の開発を試みて、そのプロトタイプを作成した。今後改良の余地はあるが、高効率な遺伝子発現制御を可能とし得る本技術は、生物学・医学を含む幅広い学問領域での利用が期待できる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2022 2021 2020 2019 Other

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Facile Expansion of the Variety of Orthogonal Ligand/Aptamer Pairs for Artificial Riboswitches2022

    • Author(s)
      Ogawa Atsushi、Inoue Honami、Itoh Yu、Takahashi Hajime
    • Journal Title

      ACS Synthetic Biology

      Volume: 12 Issue: 1 Pages: 35-42

    • DOI

      10.1021/acssynbio.2c00475

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Eukaryotic artificial ON-riboswitches that respond efficiently to mid-sized short peptides2022

    • Author(s)
      Takahashi Hajime、Okubo Ryo、Ogawa Atsushi
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 71 Pages: 128839-128839

    • DOI

      10.1016/j.bmcl.2022.128839

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coupled in vitro transcription/translation based on wheat germ extract for efficient expression from PCR-generated templates in short-time batch reactions2021

    • Author(s)
      Takahashi Hajime、Ogawa Atsushi
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 52 Pages: 128412-128412

    • DOI

      10.1016/j.bmcl.2021.128412

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Detailed Protocol for Preparing Millimeter-sized Supergiant Liposomes that Permit Efficient Eukaryotic Cell-free Translation in the Interior2021

    • Author(s)
      Takahashi Hajime、Ogawa Atsushi
    • Journal Title

      BIO-PROTOCOL

      Volume: 11 Issue: 12

    • DOI

      10.21769/bioprotoc.4054

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Molecular detection using aptamer-modified gold nanoparticles with an immobilized DNA brush for the prevention of non-specific aggregation2021

    • Author(s)
      Yano-Ozawa Yuki、Lobsiger Nadine、Muto Yu、Mori Takahiro、Yoshimura Ken、Yano Yuki、Stark Wendelin Jan、Maeda Mizuo、Asahi Tsuyoshi、Ogawa Atsushi、Zako Tamotsu
    • Journal Title

      RSC Advances

      Volume: 11 Issue: 20 Pages: 11984-11991

    • DOI

      10.1039/d0ra05149g

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In Vitro Selection of RNA Aptamers Binding to Nanosized DNA for Constructing Artificial Riboswitches2020

    • Author(s)
      Ogawa Atsushi、Itoh Yu
    • Journal Title

      ACS Synthetic Biology

      Volume: 9 Issue: 10 Pages: 2648-2655

    • DOI

      10.1021/acssynbio.0c00384

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preparation of a Millimeter-Sized Supergiant Liposome That Allows for Efficient, Eukaryotic Cell-Free Translation in the Interior by Spontaneous Emulsion Transfer2020

    • Author(s)
      Takahashi Hajime、Ogawa Atsushi
    • Journal Title

      ACS Synthetic Biology

      Volume: 9 Issue: 7 Pages: 1608-1614

    • DOI

      10.1021/acssynbio.0c00173

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] In vitro selection of a 3′ terminal short protector that stabilizes transcripts to improve the translation efficiency in a wheat germ extract2019

    • Author(s)
      Atsushi Ogawa, Akane Kutsuna, Masashi Takamatsu, Tatsuya Okuzono
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 29 Issue: 16 Pages: 2141-2144

    • DOI

      10.1016/j.bmcl.2019.06.058

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mutation of the start codon to enhance Cripavirus internal ribosome entry site-mediated translation in a wheat germ extract2019

    • Author(s)
      Atsushi Ogawa and Masashi Takamatsu
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 29 Issue: 22 Pages: 126729-126729

    • DOI

      10.1016/j.bmcl.2019.126729

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 機能性核酸および無細胞系を利用した真核遺伝子発現制御システムの合理設計2022

    • Author(s)
      小川敦司
    • Organizer
      第37回中国四国地区高分子若手研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 小麦無細胞基盤・超巨大人工細胞における遺伝子発現能の向上を指向した転写-翻訳共役系の開発2022

    • Author(s)
      高橋萌, 小川敦司
    • Organizer
      第17回無細胞生命科学研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Coupled in vitro transcription/translation system based on a wheat germ extract for highly efficient gene expression in supergiant artificial cells2022

    • Author(s)
      Hajime Takahashi, Atsushi Ogawa
    • Organizer
      Protein Island Matsuyama International Symposium 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] In vitro selection of DNA aptamers against KCTD10, a substrate receptor of cullin-3 ubiquitin ligases2022

    • Author(s)
      Naoko Ohtsuka, Masashi Maekawa, Shigeki Higashiyama, Atsushi Ogawa
    • Organizer
      Protein Island Matsuyama International Symposium 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 超巨大人工細胞における高効率な真核系遺伝子発現を指向した転写-翻訳共役系の開発2022

    • Author(s)
      高橋萌, 小川敦司
    • Organizer
      第16回バイオ関連化学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小麦無細胞基盤バッチ法における高効率遺伝子発現を指向した転写-翻訳共役系の開発2022

    • Author(s)
      高橋萌、小川敦司
    • Organizer
      第16回無細胞生命科学研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Coupled in vitro transcription/translation based on wheat germ extract for efficient expression in batch reactions2021

    • Author(s)
      Hajime Takahashi, Atsushi Ogawa
    • Organizer
      Protein Island Matsuyama International Symposium 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 効率的な遺伝子発現能を有する超巨大人工細胞の構築を目的とした超巨大リポソーム調製法の改良2021

    • Author(s)
      高橋萌、小川敦司
    • Organizer
      第15回バイオ関連化学シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 内部での効率的な遺伝子発現を指向した小麦無細胞系基盤・超巨大人工細胞の構築2021

    • Author(s)
      高橋萌、小川敦司
    • Organizer
      第11回CSJ化学フェスタ2021
    • Related Report
      2021 Research-status Report
  • [Presentation] コムギ無細胞系基盤の高発現活性を有する超巨大人工細胞の創製2021

    • Author(s)
      高橋萌、小川敦司
    • Organizer
      第15回無細胞生命科学研究会
    • Related Report
      2020 Research-status Report
  • [Presentation] 人工リボスイッチ構築用RNAアプタマーのin vitro selection2020

    • Author(s)
      伊藤優、小川敦司
    • Organizer
      2020年日本化学会中国四国支部大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 小麦無細胞系を封入した超巨大リポソーム(SGUV)における遺伝子発現2020

    • Author(s)
      高橋萌、小川敦司
    • Organizer
      2020年日本化学会中国四国支部大会
    • Related Report
      2020 Research-status Report
  • [Presentation] マルチターンオーバー型真核系リボスイッチの開発2019

    • Author(s)
      小川 敦司
    • Organizer
      新世代の生物有機化学研究会2019(第14 回
    • Related Report
      2019 Research-status Report
  • [Presentation] Gene expression in a super-giant liposome encapsulating a wheat germ extract2019

    • Author(s)
      Hajime Takahashi, Atsushi Ogawa
    • Organizer
      Protein Island Matsuyama International Symposium 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] ナノDNA応答性真核系人工リボスイッチの構築2019

    • Author(s)
      伊藤 優, 小川 敦司
    • Organizer
      「細胞を創る」研究会12.0
    • Related Report
      2019 Research-status Report
  • [Presentation] 髙橋 萌, 小川 敦司2019

    • Author(s)
      リボスイッチ媒介化学コミュニケーション型の真核系超巨大人工細胞
    • Organizer
      「細胞を創る」研究会12.0
    • Related Report
      2019 Research-status Report
  • [Remarks] 愛媛大学 小川研究室

    • URL

      https://www.pros.ehime-u.ac.jp/ogawa/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Remarks] 愛媛大学 小川研究室

    • URL

      http://www.pros.ehime-u.ac.jp/ogawa/

    • Related Report
      2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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