• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Understanding the biological roles of circular RNAs through the analysis of their translation mechanisms

Research Project

Project/Area Number 21H02155
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 38060:Applied molecular and cellular biology-related
Research InstitutionKyoto University

Principal Investigator

Takahashi Kazutoshi  京都大学, iPS細胞研究所, 准教授 (80432326)

Co-Investigator(Kenkyū-buntansha) 岩崎 未央  京都大学, iPS細胞研究所, 講師 (10722811)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords環状RNA / 非標準的翻訳 / 多能性幹細胞 / 翻訳 / リボソームプロファイリング
Outline of Research at the Start

本研究は、mRNAのスプライシング時に副産物として生成される環状RNA (circular RNA: circRNA) がタンパク質に翻訳され、生理学的な役割を持つことを証明する。circRNAの接合部位配列はゲノム上に存在しないため、従来のゲノミクスをベースとした手法では解析が困難であり、その機能についてはほとんど知られていない。
そこで本研究では、従来見過ごされてきたcircRNA由来翻訳産物を同定することで現行タンパク質カタログを大幅に拡張する。これをもとに機能的スクリーニングを行い、ヒト分化多能性幹細胞の性質に重要な役割を果たしているcircRNAを同定する。

Outline of Final Research Achievements

This study aimed to map circular RNAs (circRNAs) and establish an analysis pipeline to elucidate the translation mechanism of circRNAs and the physiological significance of their translation products, which have been overlooked to date. We identified approximately 6700 circRNAs expressed in human pluripotent stem cell lines. To determine whether these circRNAs are translated, we identified the regions where they are translated in human pluripotent stem cells using a ribosome profiling strategy. We found that approximately 28,000 regions were translated in human pluripotent stem cells, of which approximately 60% were known coding sequences (CDSs), 20% were variants of known CDSs, and the remaining 20% were novel translated regions. As described above, this study succeeded in obtaining baseline data that will serve as a stepping stone for mapping and translational analysis of circRNAs expressed in pluripotent stem cells.

Academic Significance and Societal Importance of the Research Achievements

真核生物における環状RNAはこれまで存在は示されているが、翻訳に関する報告は少ない。多くが環状RNAを癌や疾患などのバイオマーカーまたは機能性RNAとして報告しているのみであった。近年になり、環状RNAが翻訳されていることを報告した論文が出始めている状況である。本研究は多能性幹細胞で発現する環状RNAを網羅的に同定した。さらに多能性幹細胞における翻訳領域を決定した。今後この基盤データを利用することで、既存のプロテオミクスデータは大幅に拡張され、生命現象を理解するうえで必要な新規分子が同定できると期待される。

Report

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

    (9 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Open Access: 5 results,  Peer Reviewed: 4 results) Presentation (4 results) (of which Invited: 4 results)

  • [Journal Article] Selective Translation Orchestrates Key Signaling Pathways in Primed Pluripotency2024

    • Author(s)
      Okubo Chikako、Nakamura Michiko、Sato Masae、Shichino Yuichi、Mito Mari、Takashima Yasuhiro、Iwasaki Shintaro、Takahashi Kazutoshi
    • Journal Title

      bioRxiv

      Volume: 2024.02.09 Pages: 579580-579580

    • DOI

      10.1101/2024.02.09.579580

    • Related Report
      2023 Annual Research Report
    • Open Access
  • [Journal Article] Multi-omics approach reveals posttranscriptionally regulated genes are essential for human pluripotent stem cells2022

    • Author(s)
      Iwasaki Mio、Kawahara Yuka、Okubo Chikako、Yamakawa Tatsuya、Nakamura Michiko、Tabata Tsuyoshi、Nishi Yohei、Narita Megumi、Ohta Akira、Saito Hirohide、Yamamoto Takuya、Nakagawa Masato、Yamanaka Shinya、Takahashi Kazutoshi
    • Journal Title

      iScience

      Volume: 25 Issue: 5 Pages: 104289-104289

    • DOI

      10.1016/j.isci.2022.104289

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A stress-reduced passaging technique improves the viability of human pluripotent cells.2022

    • Author(s)
      Takahashi, K., Okubo, C., Nakamura, M., Iwasaki, M., Kawahara, Y., Tabata, T., Miyamoto, Y., Woltjen, K., Yamanaka, S.
    • Journal Title

      Cell Reports Methods

      Volume: 2 Issue: 2 Pages: 100155-100155

    • DOI

      10.1016/j.crmeth.2021.100155

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The pluripotent stem cell-specific transcript ESRG is dispensable for human pluripotency2021

    • Author(s)
      Takahashi Kazutoshi、Nakamura Michiko、Okubo Chikako、Kliesmete Zane、Ohnuki Mari、Narita Megumi、Watanabe Akira、Ueda Mai、Takashima Yasuhiro、Hellmann Ines、Yamanaka Shinya
    • Journal Title

      PLOS Genetics

      Volume: 17 Issue: 5 Pages: 1009587-1009587

    • DOI

      10.1371/journal.pgen.1009587

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dual inhibition of TMPRSS2 and Cathepsin B prevents SARS-CoV-2 infection in iPS cells.2021

    • Author(s)
      Hashimoto, R., Sakamoto, A., Deguchi, S., Yi, R., Sano, E., Hotta, A., Takahashi, K., Yamanaka, S., Takayama, K.
    • Journal Title

      Molecular Therapy Nucleic Acids

      Volume: 26 Pages: 1107-1114

    • DOI

      10.1016/j.omtn.2021.10.016

    • NAID

      120007167315

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 分化多能性を規定する翻訳制御機構2023

    • Author(s)
      高橋和利
    • Organizer
      日本再生医療学会第3回科学シンポジウム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 多能性幹細胞を規定する分子機構2023

    • Author(s)
      高橋和利
    • Organizer
      医学研究の最先端セミナー
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] iPS細胞2023

    • Author(s)
      高橋和利
    • Organizer
      東京都医学総合研究所第3回都民講座
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Non-canonical mode of translation in pluripotency.2022

    • Author(s)
      高橋 和利
    • Organizer
      シングルセルゲノミクス研究会2022
    • Related Report
      2022 Annual Research Report
    • Invited

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi