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Establishment of an efficient production system of medium-chain fatty acid using Aurantiochytrium sp.

Research Project

Project/Area Number 21K14772
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38020:Applied microbiology-related
Research InstitutionHiroshima University

Principal Investigator

Watanabe Kenshi  広島大学, 統合生命科学研究科(先), 特任助教 (60781242)

Project Period (FY) 2021-04-01 – 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 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords発酵生産 / 脂質 / 中鎖脂肪酸 / MCTオイル / 脂質生産 / ゲノム育種 / オーランチオキトリウム属
Outline of Research at the Start

健康食品、化粧品およびバイオ燃料の原料として有用であるが、これまでに実用に足る発酵生産技術が確立されていない中鎖脂肪酸含有脂質について、油糧微生物オーランチオキトリウム属を用いた発酵技術を確立する。オーランチオキトリウム属は主に長鎖脂肪酸を蓄積するため、その生合成酵素(FAS)の生成物特異性およびFASから脂肪酸を遊離させるチオエステラーゼの基質特異性をそれぞれ改変して中鎖脂肪酸含有脂質を蓄積するオーランチオキトリウム株を作出する。

Outline of Final Research Achievements

This research aims to produce medium-chain fatty acids by marine eukaryotic microorganisms, the genus Aurantiochytrium. Disruption of acyl-CoA oxidase genes related to fatty acid β-oxidation found in the genome of Aurantiochytrium sp. suggested that these acyl-CoA oxidases may not be specific to the carbon chain length of fatty acids. In addition, 46 thioesterase-like genes encoded in the genome of Aurantiochytrium sp. were classified by sequence comparison with previously reported thioesterases, and a gene encoding a protein with high amino acid homology to TesB, which has been reported to contribute to the release of medium-chain fatty acids, was found. We are continuing to analyze the function of this gene.

Academic Significance and Societal Importance of the Research Achievements

多様な分野で需要が高まっている中鎖脂肪酸含有脂質を、気候や地理的条件によらず安定生産できる、油糧微生物による発酵生産を試みた。油糧微生物オーランチオキトリウム属の脂質代謝における脂肪酸鎖長に対する特異性について解析を行い、中鎖脂肪酸生産に向けた代謝改変を行うために有用な知見が得られた。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (13 results)

All 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Book (2 results)

  • [Journal Article] Recent trends in the field of lipid engineering.2022

    • Author(s)
      Kikukawa H, Watanabe K, Kishino S, Takeuchi M, Ando A, Izumi Y, Sakuradani E*.
    • Journal Title

      Journal of Bioscience and Bioengineering

      Volume: 133(5) Issue: 5 Pages: 405-413

    • DOI

      10.1016/j.jbiosc.2022.02.001

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Utilization of Sugarcane Bagasse as a Substrate for Lipid Production by <i>Aurantiochytrium</i> sp.2022

    • Author(s)
      K. Watanabe, M. Nishijima, S. Mayuzumi, T. Aki
    • Journal Title

      Journal of Oleo Science

      Volume: 71 Issue: 10 Pages: 1493-1500

    • DOI

      10.5650/jos.ess22206

    • ISSN
      1345-8957, 1347-3352
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improvement of fatty acid productivity of thraustochytrid, Aurantiochytrium sp. by genome editing2021

    • Author(s)
      K. Watanabe, C.M.T. Perez, T. Kitahori, K. Hata, M. Aoi, H. Takahashi, T. Sakuma, Y. Okamura, Y. Nakashimada, T. Yamamoto, K. Matsuyama, S. Mayuzumi, T. Aki
    • Journal Title

      J. Biosci. Bioeng.

      Volume: 131 Issue: 4 Pages: 373-380

    • DOI

      10.1016/j.jbiosc.2020.11.013

    • NAID

      40022545824

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Utilization of sugar cane bagasse as a substrate for fatty acid production by Aurantiochytrium sp.2022

    • Author(s)
      Kenshi Watanabe, Miho Nishijima, Shinzo Mayuzumi and Tsunehiro Aki
    • Organizer
      2022 AOCS Annual Meeting & Expo
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] サトウキビバガスを利用したオーランチオキトリウム属による脂質生産2022

    • Author(s)
      渡邉研志, 西嶋美保, 黛新造, 秋庸裕
    • Organizer
      第74回日本生物工学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高機能性油脂発酵生産微生物の開発およびその応用2022

    • Author(s)
      渡邉研志
    • Organizer
      日本生物工学会西日本支部大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] オーランチオキトリウム属の油脂生産性向上に向けたゲノム編集の利用2022

    • Author(s)
      渡邉研志
    • Organizer
      広島大学先端科学セミナー “ゲノム編集”で未来社会を拓く
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Improvement of lipid productivity of Aurantiochytrium sp. by genome editing.2021

    • Author(s)
      Kenshi Watanabe, Charose M. T. Perez, Tomoki Kitahori, Kosuke Hata, Masato Aoi, Hirokazu Takahashi, Tetsushi Sakuma, Yoshiko Okamura, Yutaka Nakashimada, Takashi Yamamoto, Keisuke Matsuyama, Shinzo Mayuzumi and Tsunehiro Aki
    • Organizer
      2021 AOCS Annual Meeting & Expo
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] ゲノム編集によるオーランチオキトリウム属の脂肪酸生産性の向上2021

    • Author(s)
      渡邉研志, Charose M. T. Perez, 北堀智希, 畑浩介, 青井真人, 高橋宏和, 佐久間哲史, 岡村好子, 中島田豊, 山本卓, 松山恵介, 秋庸裕
    • Organizer
      第73回日本生物工学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] ゲノム編集によるオーランチオキトリウム属の脂肪酸生産性の向上. 第6回ラビリンチュラシンポジウム2021

    • Author(s)
      渡邉研志, Charose M. T. Perez, 北堀智希, 畑浩介, 青井真人, 高橋宏和, 佐久間哲史, 岡村好子, 中島田豊, 山本卓, 松山恵介, 秋庸裕
    • Organizer
      第6回ラビリンチュラシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Functional modification of enzymes and microorganisms to produce the tailor-made lipids.2021

    • Author(s)
      Kenshi Watanabe
    • Organizer
      Lecture for students of the University of Santo Tomas
    • Related Report
      2021 Research-status Report
    • Invited
  • [Book] 二酸化炭素利活用技術~CO2削減に向けた最新研究~2022

    • Author(s)
      渡邉研志、秋庸裕(監修:鎌田 博之、中垣 隆雄、藤田 照典)
    • Total Pages
      270
    • Publisher
      情報機構
    • ISBN
      9784865022261
    • Related Report
      2022 Annual Research Report
  • [Book] バイオエネルギー再燃(第3章-6 オーランチオキトリウムによるバイオリファイナリーと有用脂質生産)2021

    • Author(s)
      渡邉研志、秋庸裕(監修:植田充美)
    • Total Pages
      290
    • Publisher
      シーエムシー出版
    • ISBN
      9784781316215
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2024-01-30  

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