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Search for novel bioactive compounds from the genome of endophytic actinomycetes

Research Project

Project/Area Number 17K15469
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Natural medicines
Research InstitutionKitasato University

Principal Investigator

Inahashi Yuki  北里大学, 感染制御科学府, 講師 (70645522)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords植物由来放線菌 / 二次代謝産物 / 生合成 / 異種発現 / ゲノムマイニング / 生合成遺伝子 / 微生物薬品学
Outline of Final Research Achievements

Actinomycetes are attractive source for natural products. So far, we isolated endophytic actinomycetes and discovered some new species and novel compounds. However most of the isolates are untapped for bioresource, even if there are more potential in the genomes. In this study, biosynthetic gene clusters for new compounds were investigated from the genomes and expressed in heterologous host to search the products. In the result, new benzoquinoe analog was discovered from type III Polyketide synthase (PKS) in Streptosporangium oxazolinicum K07-0460, and new tetrapeptides and new hydroxypyrane analogs were discovered from non-ribosomal peptide synthetase (NPRS) and type I PKS, respectively in Acrocarpospora sp. K10-0603.

Academic Significance and Societal Importance of the Research Achievements

放線菌の二次代謝産物からはストレプトマシンやエバーメクチンなどの抗生物質が発見され、医薬品等の探索源として大きく寄与してきた。我々はこれまで多くの放線菌を植物から分離し、生物活性物質探索に利用してきた。近年、ゲノム解析技術の進歩により、そのゲノムにはまだ多くの二次代謝産物生合成遺伝子が眠っていることが明らかとなってきた。我々の保有する植物由来放線菌を最大限に活用するために、それらのゲノムから生合成遺伝子を探索し、その発現を試みた結果、新規化合物の取得に成功した。今後は、これらの化合物から医薬品のリードとなるような活性を見出していきたい。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (3 results)

  • [Journal Article] Amycolatopsis pithecelloba sp. nov., a novel actinomycete isolated from roots of Pithecellobium dulce in Thailand2020

    • Author(s)
      Mingma Ratchanee、Inahashi Yuki、Matsumoto Atsuko、Takahashi Yoko、Duangmal Kannika
    • Journal Title

      The Journal of Antibiotics

      Volume: 73 Issue: 4 Pages: 230-235

    • DOI

      10.1038/s41429-019-0271-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sarpeptins A and B, Lipopeptides Produced by Streptomyces sp. KO-7888 Overexpressing a Specific SARP Regulator2019

    • Author(s)
      Koomsiri Wilaiwan、Inahashi Yuki、Leetanasaksakul Kantinan、Shiomi Kazuro、Takahashi Yoko、Omura Satoshi、Samborskyy Markiyan、Leadlay Peter F.、Wattana-Amorn Pakorn、Thamchaipenet Arinthip、Nakashima Takuji
    • Journal Title

      Journal of Natural Products

      Volume: 82 Issue: 8 Pages: 2144-2151

    • DOI

      10.1021/acs.jnatprod.9b00074

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Saccharopolyspora rhizosphaerae sp. nov., an actinomycete isolated from rhizosphere soil in Thailand2019

    • Author(s)
      Intra Bungonsiri、Euanorasetr Jirayut、Take Akira、Inahashi Yuki、Mori Mihoko、Panbangred Watanalai、Matsumoto Atsuko
    • Journal Title

      International Journal of Systematic and Evolutionary Microbiology

      Volume: 69 Issue: 5 Pages: 1299-1305

    • DOI

      10.1099/ijsem.0.003307

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 植物由来放線菌Acrocarpospora sp. K10-0603のゲノム からの新規物質探索2019

    • Author(s)
      稲橋佑起, 森下結衣, 木村徹, 須賀拓弥, 高橋洋子, 大村智, 中島琢自
    • Organizer
      第11回北里化学シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 植物の根より分離されたStreptosporangiaceae科に属するK14-0274株の分類研究2019

    • Author(s)
      山田祐輝, 稲橋佑起, 武晃, 池田翔一, 大村智, 松本厚子
    • Organizer
      第34回日本放線菌学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Streptomyces sp. KO-7888のSARP family regulator発現株が生産する新規物質Sarpeptinについて2019

    • Author(s)
      稲橋 佑起, Wilaiwan Koomsiri, Kantinan Leetanasaksakul, 塩見 和朗, 高橋 洋子, 大村 智, Markiyan Samborskyy, Peter F. Leadlay, Pakorn Wattana-Amorn, Arinthip Thamchaipenet, 中島 琢自
    • Organizer
      第34回日本放線菌学会大会
    • Related Report
      2019 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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