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Development of a self-editing RNA viral vector to accelerate gene therapy for neurological diseases

Research Project

Project/Area Number 19K22530
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 49:Pathology, infection/immunology, and related fields
Research InstitutionKyoto University

Principal Investigator

Tomonaga Keizo  京都大学, ウイルス・再生医科学研究所, 教授 (10301920)

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)
Keywordsボルナウイルス / ウイルスベクター / ADAR / Cas13 / ADRA
Outline of Research at the Start

本研究は、脳内に送達させたボルナ病ウイルス(BoDV)ベクターのゲノムに自己編集を誘導させることで、伝播能力や複製能力を欠損した安全性の高いウイルスベクターに生体内で進化させる新技術の開発を行うものである。BoDVベクターは、中枢神経系疾患の遺伝子治療に安全かつ長期間適用できるわが国発のRNAウイルスベクターである。BoDVベクターの実用化を加速するために、自己編集型ベクターの開発を行い安全性を高める必要があると考えられる。本研究は、RNA編集酵素を利用することで自己編集型のウイルスベクターの作製を試みる。本研究は新たなウイルスベクタ―の実用化を目指した斬新かつチャレンジングな研究である。

Outline of Final Research Achievements

The aim of this study is to construct a self-editing RNA viral vector using Borna disease virus (BoDV), which can be noninvasively transduced into the brain, and subsequently lose its propagation and replication abilities. During the research period, we conducted basic experiments of self-editing vectors using the RNA editing enzymes, ADAR2 and Cas13, based on the prototype BoDV vector, and succeeded in constructing a BoDV vector expressing Cas.

Academic Significance and Societal Importance of the Research Achievements

BoDVベクターは、遺伝子治療に使われているレンチウイルスやアデノ随伴ウイルスに由来する既存のウイルスベクターに比べ、細胞傷害性が低く、ゲノム毒性を示すこともなく、分裂細胞にも外来遺伝子を持続的に発現することができる。また、鼻腔より非侵襲的に脳への送達が可能なことである。生体内で自らのゲノムや遺伝子発現を編集する新しい自己編集型BoDVベクターの作製により、中枢神経系に導入したBoDVベクターの安全性と利便性がさらに高めることが可能となり、遺伝子細胞治療への応用が加速されると考えられる。

Report

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

    (14 results)

All 2021 2020 2019 Other

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (3 results)

  • [Journal Article] Optimal Expression of the Envelope Glycoprotein of Orthobornaviruses Determines the Production of Mature Virus Particles.2021

    • Author(s)
      Sakai M, Fujita Y, Komorizono R, Kanda T, Komatsu Y, Noda T, Tomonaga K, Makino A.
    • Journal Title

      J Virol.

      Volume: 95 Issue: 5 Pages: 1-16

    • DOI

      10.1128/jvi.02221-20

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In vivo biodistribution analysis of transmission competent and defective RNA virus-based episomal vector2020

    • Author(s)
      Komatsu Yumiko、Tanaka Chiaki、Komorizono Ryo、Tomonaga Keizo
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 62630-62637

    • DOI

      10.1038/s41598-020-62630-7

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Production of high-titer transmission-defective RNA virus-based episomal vector using tangential flow filtration2020

    • Author(s)
      Komatsu Y, Kakuya Y, Tomonaga K.
    • Journal Title

      Microbiol Immunol

      Volume: 64 Issue: 9 Pages: 602-609

    • DOI

      10.1111/1348-0421.12831

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reverse genetics approaches of Borna disease virus: applications in development of viral vectors and preventive vaccines.2020

    • Author(s)
      Komatsu Y, Tomonaga K.
    • Journal Title

      Curr Opin Virol

      Volume: 44 Pages: 42-48

    • DOI

      10.1016/j.coviro.2020.05.011

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ADAR2 Is Involved in Self and Nonself Recognition of Borna Disease Virus Genomic RNA in the Nucleus.2020

    • Author(s)
      Yanai M, Kojima S, Sakai M, Komorizono R, Tomonaga K Makino A
    • Journal Title

      Journal of Virology

      Volume: 94 Issue: 6 Pages: 01513-01519

    • DOI

      10.1128/jvi.01513-19

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] RNA Virus-Based Episomal Vector with a Fail-Safe Switch Facilitating Efficient Genetic Modification and Differentiation of iPSCs.2019

    • Author(s)
      Komatsu Y, Takeuchi D, Tokunaga T, Sakurai H, Makino A, Honda T, Ikeda Y, Tomonaga K.
    • Journal Title

      Mol Ther Methods Clin Dev. 2019 May 28;14:47-55.

      Volume: 14 Pages: 47-55

    • DOI

      10.1016/j.omtm.2019.05.010

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 内在性ボルナウイルス様配列の網羅的解析:中生代から現代にわたるボルナウイルス感染履歴の追跡2020

    • Author(s)
      川崎純菜,小嶋将平,向井八尋,朝長啓造,堀江真行
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] A large-scale metaviromic analysis contributed to a deeper understanding of the evolution viruses: An example of deltaviruses in vertebrates.2020

    • Author(s)
      Horie M, Iwamoto M, Shibata Y, Kawasaki J, Kojima S, Wada K, Watashi K, Tomonaga K
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] RNA virus-based episomal vector system and its applications in gene and cell therapy.2019

    • Author(s)
      小松弓子, 朝長啓造
    • Organizer
      第25回日本遺伝子細胞治療学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] In vivo evaluation of replication competent and defective RNA-virus based Episomal vector system.2019

    • Author(s)
      Y Komatsu, C Tanaka, and K Tomonaga.
    • Organizer
      ESGCT 27th annual congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] BoDV utilizes ADAR2 for evasion of innate immune response.2019

    • Author(s)
      Mako Yanai, Shohei Kojima, Madoka Sakai, Ryo Komorizono, Akiko Makino, Keizo Tomonaga.
    • Organizer
      第67回日本ウイルス学会学術集会
    • Related Report
      2019 Research-status Report
  • [Remarks] 京都大学ウイルス・再生医科学研究所

    • URL

      https://www.infront.kyoto-u.ac.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 朝長研究室HP

    • URL

      https://t.rnavirus.virus.kyoto-u.ac.jp/

    • Related Report
      2019 Research-status Report
  • [Remarks] 京都大学ウイルス・再生医科学研究所HP

    • URL

      https://www.infront.kyoto-u.ac.jp/

    • Related Report
      2019 Research-status Report

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

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