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Development of new CRISPR-based genome engineering technologies

Research Project

Project/Area Number 20K20579
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Nishimasu Hiroshi  東京大学, 先端科学技術研究センター, 教授 (00467044)

Project Period (FY) 2020-07-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥26,000,000 (Direct Cost: ¥20,000,000、Indirect Cost: ¥6,000,000)
Fiscal Year 2022: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2021: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Fiscal Year 2020: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
KeywordsCRISPR / クライオ電子顕微鏡 / Cas12k
Outline of Research at the Start

CRISPR-Cas獲得免疫機構に関与するRNA依存性DNA結合タンパク質Cas12kは、Tn7様トランスポゾン因子とCAST複合体を形成し、ドナーDNAをターゲットDNAの特定の位置に挿入する機能をもつ。本研究課題では、CAST-DNA超分子複合体の立体構造を決定し、DNA転移メカニズムを原子レベルで解明する。さらに、構造情報を利用することにより、効率的なノックイン技術の開発を目指す。

Outline of Final Research Achievements

CRISPR-Cas enzyme complexes involved in the prokaryotic CRISPR-Cas adaptive immune system recognize and cleave target nucleic acids complementary to RNA guides. Thus, they have been applied to various technologies such as genome editing. In this research project, we performed structural and functional analyses of CRISPR-Cas complexes, such as Cas12k, Cas13bt3, Cas7-11, and Cas7-11-Csx29, elucidating their diverse action mechanisms. In addition, we determined the structure of IscB, providing insights into the molecular evolution of CRISPR-Cas9.

Academic Significance and Societal Importance of the Research Achievements

本研究において決定した複数のCRISPR-Cas複合体の立体構造と、それらに基づく機能解析の結果、新たな作動メカニズムが明らかになった。したがって、本研究成果により、CRISPR-Cas酵素の多様性に関する理解が大きく推進した。さらに、本研究で得られた構造情報は新規の技術開発の基盤として期待される。

Report

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

    (4 results)

All 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Peer Reviewed: 2 results)

  • [Int'l Joint Research] MIT(米国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Broad Institute(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Structure of the miniature type V-F CRISPR-Cas effector enzyme2021

    • Author(s)
      Takeda Satoru N.、Nakagawa Ryoya、Okazaki Sae、Hirano Hisato、Kobayashi Kan、Kusakizako Tsukasa、Nishizawa Tomohiro、Yamashita Keitaro、Nishimasu Hiroshi、Nureki Osamu
    • Journal Title

      Molecular Cell

      Volume: 81 Issue: 3 Pages: 558-570.e3

    • DOI

      10.1016/j.molcel.2020.11.035

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Publisher Correction: Base editors for simultaneous introduction of C-to-T and A-to-G mutations2020

    • Author(s)
      Sakata Rina C.、Ishiguro Soh、Mori Hideto、Tanaka Mamoru、Tatsuno Kenji、Ueda Hiroki、Yamamoto Shogo、Seki Motoaki、Masuyama Nanami、Nishida Keiji、Nishimasu Hiroshi、Arakawa Kazuharu、Kondo Akihiko、Nureki Osamu、Tomita Masaru、Aburatani Hiroyuki、Yachie Nozomu
    • Journal Title

      Nature Biotechnology

      Volume: 38 Issue: 7 Pages: 901-901

    • DOI

      10.1038/s41587-020-0585-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed

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Published: 2020-08-03   Modified: 2025-01-30  

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