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Development of a real-time fungal species identification method and clinical fungal metagenomics

Research Project

Project/Area Number 21K08505
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54030:Infectious disease medicine-related
Research InstitutionOsaka University

Principal Investigator

Motooka Daisuke  大阪大学, 微生物病研究所, 講師 (10636830)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsメタゲノミクス / 真菌ゲノム解析 / メタゲノム / 真菌
Outline of Research at the Start

本研究は、原因不明疾患の患者の臨床検体から網羅的かつ迅速な病原体の検出・同定を行い、感染症の原因を解明することを目的とする。本研究では、真菌感染症に焦点をあて、正確な真菌種同定方法を構築する。真菌配列データベースの構築とNGSを組み合わせることで、より高感度、正確、迅速かつ安価な病原体検出法を確立する。

Outline of Final Research Achievements

This research focuses on elucidating the causes of idiopathic diseases by employing metagenomic analysis for the comprehensive and rapid detection and identification of pathogens in clinical specimens. A particular emphasis is placed on the challenging task of fungal detection and precise species identification. To address this, we developed a novel methodology for fungal species and strain identification. Specifically, we established a species identification technique utilizing the full-length ribosomal RNA (rRNA) of fungi, which demonstrated superior accuracy and efficiency compared to the traditional ITS1 region-based analysis. Furthermore, the applicability of this advanced method to clinical specimens was evaluated using the DNA from T. asahi positive specimens.

Academic Significance and Societal Importance of the Research Achievements

新興・再興感染症は、いつどこで発生するか予想することは難しく、発生した場合に早期に診断、治療を行う体制を構築するかが重要である。その対策として、網羅的に病原体を探索できるメタゲノム解析法(クリニカルメタゲノミクス)は病原体に関する前情報が不要であり有用である。本研究では、真菌のrRNA全長を用いた種同定法を構築し、従来のITS1やITS2領域を使用した解析より正確かつ迅速な同定ができるようになった。

Report

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

    (9 results)

All 2023 2022 2021

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

  • [Journal Article] Fungal dysbiosis and decreased tear mucin at the conjunctiva in patients with conjunctival mucosa-associated lymphoid tissue lymphoma2023

    • Author(s)
      Asao Kazunobu、Hashida Noriyasu、Motooka Daisuke、Tsukamoto Teruhisa、Nakamura Shota、Maruyama Kazuichi、Nishida Kohji
    • Journal Title

      BMJ Open Ophthalmology

      Volume: 8 Issue: 1 Pages: e001360-e001360

    • DOI

      10.1136/bmjophth-2023-001360

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Alteration of microbial composition in the skin and blood in vasculitis2023

    • Author(s)
      Miyata Ryujin、Miyabe Chie、Oki Hiroya、Motooka Daisuke、Nakamura Shota、Miyabe Yoshishige、Takenaka Yuko、Fukuya Yasuko、Yudo Kazuo、Ishiguro Naoko
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1

    • DOI

      10.1038/s41598-023-42307-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metagenomic analysis of diarrheal stools in Kolkata, India, indicates the possibility of subclinical infection of Vibrio cholerae O12022

    • Author(s)
      Takahashi Eizo、Motooka Daisuke、Nakamura Shota、Miyoshi Shin-ichi、Chowdhury Goutam、Mukhopadhyay Asish K.、Dutta Shanta、Morita Daichi、Iida Tetsuya、Okamoto Keinosuke
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1

    • DOI

      10.1038/s41598-022-24167-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Longitudinal alterations of the gut mycobiota and microbiota on COVID-19 severity2022

    • Author(s)
      Maeda Yuichi、Motooka Daisuke、Kawasaki Takahiro、Oki Hiroya、Noda Yoshimi、Adachi Yuichi、Niitsu Takayuki、Okamoto Shota、Tanaka Kentaro、Fukushima Kiyoharu、Amiya Saori、Hara Reina、Oguro-Igashira Eri、Matsuki Takanori、Hirata Haruhiko、Takeda Yoshito、Kida Hiroshi、Kumanogoh Atsushi、Nakamura Shota、Takeda Kiyoshi
    • Journal Title

      BMC Infectious Diseases

      Volume: 22 Issue: 1 Pages: 572-572

    • DOI

      10.1186/s12879-022-07358-7

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] High production of egc2-related staphylococcal enterotoxins caused a food poisoning outbreak2021

    • Author(s)
      Umeda Kaoru、Ono Hisaya K.、Wada Takayuki、Motooka Daisuke、Nakamura Shota、Nakamura Hiromi、Hu Dong-Liang
    • Journal Title

      International Journal of Food Microbiology

      Volume: 357 Pages: 109366-109366

    • DOI

      10.1016/j.ijfoodmicro.2021.109366

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Benchmark of 16S rRNA gene amplicon sequencing using Japanese gut microbiome data from the V1-V2 and V3-V4 primer sets2021

    • Author(s)
      Kameoka Shoichiro、Motooka Daisuke、Watanabe Satoshi、Kubo Ryuichi、Jung Nicolas、Midorikawa Yuki、Shinozaki Natsuko O.、Sawai Yu、Takeda Aya K.、Nakamura Shota
    • Journal Title

      BMC Genomics

      Volume: 22 Issue: 1

    • DOI

      10.1186/s12864-021-07746-4

    • Related Report
      2021 Research-status Report
  • [Presentation] 大阪大学微生物病研究所ゲノム解析室における研究支援と共生微生物研究2023

    • Author(s)
      元岡大祐
    • Organizer
      第96回日本生化学学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Longitudinal alterations of the gut microbiota and mycobiota on COVID-19 severity2023

    • Author(s)
      元岡大祐、前田悠一、沖大也、田中健太郎、猪頭英里、平田陽彦、木田博、熊ノ郷淳、中村昇太、竹田潔
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 腸内細菌叢・真菌叢の変化と健康について2022

    • Author(s)
      元岡 大祐
    • Organizer
      第4回COI学術交流会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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