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

Study on DNA repair mechanism via large-scale deletion in Aspergillus oryzae caused by genome editing due to error of non-homologous end-joining repair.

Research Project

Project/Area Number 19K05952
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38060:Applied molecular and cellular biology-related
Research InstitutionUniversity of the Ryukyus

Principal Investigator

Mizutani Osamu  琉球大学, 農学部, 准教授 (10443996)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords麹菌 / ゲノム編集 / 人工ヌクレアーゼ (TALENs) / CRISPR/Cas9 / DNA 二本鎖切断修復 / 非相同末端結合 / 人工ヌクレアーゼ (TALEN) / ligD / 黄麹菌 / 黒麹菌 / DNA 修復機構
Outline of Research at the Start

ゲノム編集は、対象生物のゲノム中の任意の位置に二本鎖切断を引き起こし、DNA 修復機構を利用して、自由に遺伝子改変を行える技術である。この技術を麹菌に用いると、酵母や動植物では、数 bp の欠失や挿入が観察されるのに対し、麹菌ではしばしば 1 kb 以上の大規模な欠失が引き起こされる。本研究では、この大規模欠失のメカニズムの解明に取り組み、関与遺伝子を明らかにする。更に、関与遺伝子を制御することで、ゲノム編集時に自由に欠失の規模をコントロールすることが可能かに挑戦する。

Outline of Final Research Achievements

We performed genome editing of Aspergillus oryzae wild-type strain via error of nonhomologous end-joining (NHEJ) repair by TALENs and CRISPR/Cas9. Targeted mutations were observed as various mutation patterns. Notably, about half of the mediated deletion mutants caused by genome editing had deletions larger than 1 kb in the targeting region of TALEN or CRISPR/Cas9.In this study, we aim to elucidate the mechanism of large deletions caused by double-strand breaks during genome editing in Aspergillus oryzae. To investigate whether this large deletion is related to the NHEJ pathway, we constructed disruptant of polD gene which may be related to the NHEJ pathway and performed genome editing using the strain as host. As a result, it was suggested that A. oryzae polD gene was not involved the large deletion via genome editing. On the other hand, genome analysis of a large deletion-suppressed mutant revealed 17 mutated genes.

Academic Significance and Societal Importance of the Research Achievements

本研究は、麹菌において非相同末端結合修復エラーを介したゲノム編集を行うと、酵母や高等動植物で観察されるような数 bp の欠失の他に 1 kb 以上もの大規模な欠失が高頻度で観察されることについて、どのような因子が大規模欠失に関与しているかを明らかにしようとしている。本研究が進展すれば、従来、他の生物と同様と考えられていた麹菌の DNA 2本鎖切断修復機構において、麹菌独自の機構の発見やこのメカニズムを利用した新たな麹菌育種法の開発等に繋がると期待される。

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

    (10 results)

All 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (3 results) Book (1 results)

  • [Journal Article] Construction of transcription factor gene deletion library of <i>Aspergillus luchuensis</i>2021

    • Author(s)
      Yamada Osamu、Nishibori Naoko、Hayashi Risa、Arima Toshihide、Mizutani Osamu
    • Journal Title

      The Journal of General and Applied Microbiology

      Volume: 67 Issue: 3 Pages: 118-123

    • DOI

      10.2323/jgam.2020.09.001

    • NAID

      130008069742

    • ISSN
      0022-1260, 1349-8037
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Identification of Genes Involved in the Synthesis of the Fungal Cell Wall Component Nigeran and Regulation of Its Polymerization in Aspergillus luchuensis2021

    • Author(s)
      Uechi Keiko、Yaguchi Hajime、Tokashiki Jikian、Taira Toki、Mizutani Osamu
    • Journal Title

      Applied and Environmental Microbiology

      Volume: 87 Issue: 21

    • DOI

      10.1128/aem.01144-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of an itraconazole resistance gene as a dominant selectable marker for transformation in Aspergillus oryzae and Aspergillus luchuensis2021

    • Author(s)
      Tokashiki Jikian、Toyama Hirohide、Mizutani Osamu
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 85 Issue: 3 Pages: 722-727

    • DOI

      10.1093/bbb/zbaa080

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phenolic acid decarboxylase of Aspergillus luchuensis plays a crucial role in 4-vinylguaiacol production during awamori brewing2020

    • Author(s)
      Maeda Mayumi、Motosoko Marin、Tokashiki Tatsunori、Tokashiki Jikian、Mizutani Osamu、Uechi Keiko、Goto Masatoshi、Taira Toki
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 130 Issue: 4 Pages: 352-359

    • DOI

      10.1016/j.jbiosc.2020.05.004

    • NAID

      40022381063

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influence of α-1,3-glucan synthase gene agsE on protoplast formation for transformation of Aspergillus luchuensis2019

    • Author(s)
      Tokashiki Jikian、Hayashi Risa、Yano Shigekazu、Watanabe Taisuke、Yamada Osamu、Toyama Hirohide、Mizutani Osamu
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 印刷中 Issue: 2 Pages: 129-134

    • DOI

      10.1016/j.jbiosc.2019.01.018

    • NAID

      40021976308

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of pepA deletion and overexpression in Aspergillus luchuensis on sweet potato shochu brewing2019

    • Author(s)
      Setoguchi Sho、Mizutani Osamu、Yamada Osamu、Futagami Taiki、Iwai Kenichi、Takase Yoshikazu、Tamaki Hisanori
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 128 Issue: 4 Pages: 456-462

    • DOI

      10.1016/j.jbiosc.2019.03.019

    • NAID

      40022037155

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 麹菌で利用可能なイトラコナゾール耐性マーカーの構築2021

    • Author(s)
      渡嘉敷 直杏, 外山 博英, 水谷 治
    • Organizer
      第 73 回日本生物工学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 麹菌におけるイトラコナゾール耐性を指標とした形質転換用マーカーの開発2020

    • Author(s)
      ○渡嘉敷直杏, 水谷 治, 外山博英
    • Organizer
      日本農芸化学会 2020 年度大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 黒麹菌 Aspergillus luchuensis のエレクトロポレーション法による形質転換系の開発2019

    • Author(s)
      ○上元 優, 玉井萌子, 渡嘉敷直杏, 外山博英, 水谷 治
    • Organizer
      第 19 回糸状菌分子生物学コンファレンス
    • Related Report
      2019 Research-status Report
  • [Book] Genome Engineering via CRISPR-Cas9 System 1st Edition (担当範囲: 5. Targeted genome editing using CRISPR-Cas9 system in fungi)2020

    • Author(s)
      Arazoe T., Mizutani O.
    • Total Pages
      384
    • Publisher
      Elsevier
    • Related Report
      2019 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi