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Understanding the regional specificity of non-tuberculous Mycobacterium distribution in relation to coexisting microorganisms.

Research Project

Project/Area Number 20K18903
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionHiroshima University

Principal Investigator

Fujiyoshi So  広島大学, 学術・社会連携室, 助教 (20805808)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords住環境 / 細菌群集 / 微生物生態学 / 相互作用 / ホームプロバイオティクス / 次世代シーケンサー / 抗酸菌
Outline of Research at the Start

非結核性抗酸菌の一部が引き起こす難治性の肺疾患は、ヒト-ヒト感染はなく、主な感染経路はヒト周辺環境に存在する病原性の抗酸菌への暴露と考えられている。これまで、その感染源が浴室環境である可能性が示唆されており、最近実施された全国規模での調査でも約半数の家庭から抗酸菌が検出されている。しかし、罹患率や病原性の抗酸菌種の分布は地域間で大きく異なっている。本申請研究は、「なぜ病原性の抗酸菌種には地域差があるのか」を明らかにするため、国内の浴室環境試料を収集し、その微生物群集構造、抗酸菌の菌種組成、現存量を調査する。これにより、病原性の抗酸菌種と共起/排除関係にある微生物および地域性を明らかにする。

Outline of Final Research Achievements

Samples from bathroom environments in Japan were collected and microbial community structure in showerhead biofilm and showerhead feed water was analyzed. The percentage of Mycobacterium in showerhead biofilms was low, as was that in shower water. Network analysis revealed some bacterial genus that interacted negatively with opportunistic pathogenic genus. However, these bacteria were difficult to culture, and we are currently working on a culture method in collaboration with RIKEN. We have isolated and cultured microorganisms from our samples and have so far obtained 55 strains, including Mycobacterium spp.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、浴室ならびに浄水環境における微生物群集を評価した国内初のデータである。また、同じ浴室で採取したシャワーヘッドからの水とその内部のバイオフィルムの微生物群集を比較することで、水とバイオフィルムの微生物の類似性と相違性が明確に示された。各家庭において独自のバイオフィルム微生物群集が構築されていたことから、公衆衛生においては各家庭における衛生対策が重要であり、そのためには現場での迅速かつ容易な微生物群集の同定が必要であることが示唆された。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (18 results)

All 2022 2021 2020 Other

All Journal Article (8 results) (of which Int'l Joint Research: 3 results,  Open Access: 8 results,  Peer Reviewed: 7 results) Presentation (8 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Structure of bacterial communities in Japanese-style bathrooms: Comparative sequencing of bacteria in shower water and showerhead biofilms using a portable nanopore sequencer2021

    • Author(s)
      Fujiyoshi So、Nishiuchi Yukiko、Maruyama Fumito
    • Journal Title

      bioRxiv

      Volume: ー

    • DOI

      10.1101/2021.07.14.452346

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Relationship between the Microbiome and Indoor Temperature/Humidity in a Traditional Japanese House with a Thatched Roof in Kyoto, Japan2021

    • Author(s)
      Kokubo Makoto、Fujiyoshi So、Ogura Daisuke、Nakajima Makiko、Fujieda Ayako、Noda Jun、Maruyama Fumito
    • Journal Title

      Diversity

      Volume: 13 Issue: 10 Pages: 475-475

    • DOI

      10.3390/d13100475

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Thermal destabilization mechanism of cytochrome c' from psychrophilic Shewanella violacea2021

    • Author(s)
      Sakaguchi Riku、Fujiyoshi So、Wakai Satoshi、Yamanaka Masaru、Sambongi Yoshihiro
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 2021 Issue: 5 Pages: 1121-1127

    • DOI

      10.1093/bbb/zbab007

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of PCR conditions for characterizing bacterial communities with full-length 16S rRNA genes using a portable nanopore sequencer2020

    • Author(s)
      S Fujiyoshi, A Muto-Fujita, F Maruyama
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 12580-12580

    • DOI

      10.1038/s41598-020-69450-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Suitcase Lab: new, portable, and deployable equipment for rapid detection of specific harmful algae in Chilean coastal waters2020

    • Author(s)
      Fujiyoshi So、Yarimizu Kyoko、Miyashita Yohei、Rilling Joaquin、Acuna Jacquelinne J.、Ueki Shoko、Gajardo Gonzalo、Espinoza-Gonzalez Oscar、Guzm?n Leonardo、Jorquera Milko A.、Nagai Satoshi、Maruyama Fumito
    • Journal Title

      Environmental Science and Pollution Research

      Volume: 28 Issue: 11 Pages: 14144-14155

    • DOI

      10.1007/s11356-020-11567-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Protocols for Monitoring Harmful Algal Blooms for Sustainable Aquaculture and Coastal Fisheries in Chile2020

    • Author(s)
      Yarimizu Kyoko、Fujiyoshi So、Kawai Mikihiko, et al
    • Journal Title

      International Journal of Environmental Research and Public Health

      Volume: 17 Issue: 20 Pages: 7642-7642

    • DOI

      10.3390/ijerph17207642

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Size resolved characteristics of urban and suburban bacterial bioaerosols in Japan as assessed by 16S rRNA amplicon sequencing2020

    • Author(s)
      Tanaka Daisuke、Fujiyoshi So、Maruyama Fumito、Goto Motoshi、Koyama Shinichi、Kanatani Jun-ichi、Isobe Junko、Watahiki Masanori、Sakatoku Akihiro、Kagaya Shigehiro、Nakamura Shogo
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 12406-12406

    • DOI

      10.1038/s41598-020-68933-z

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Airborne bacterial communities of outdoor environments and their associated influencing factors2020

    • Author(s)
      Ruiz-Gil Tay、Acuna Jacquelinne J.、Fujiyoshi So、Tanaka Daisuke、Noda Jun、Maruyama Fumito、Jorquera Milko A.
    • Journal Title

      Environment International

      Volume: 145 Pages: 106156-106156

    • DOI

      10.1016/j.envint.2020.106156

    • NAID

      120007193555

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 住環境の微生物と物理化学的因子、住まいの関係ー伝統茅葺民家の微生物群集構造と、高断熱高気密住宅の室内温湿度環境と住まい方ー2022

    • Author(s)
      小久保舞香、小椋大輔、中嶋麻起子、藤枝絢子、丸山史人、藤吉 奏、能田 淳
    • Organizer
      建築学会大会2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] Microbiome and indoor temperature/humidity in a traditional Japanese house with a thatched roof2022

    • Author(s)
      Maruyama F, Fujiyoshi S, Kokubo M, Nakajima M, Ogura D
    • Organizer
      ASM Microbe
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 住環境の微生物と物理化学的因子、住まいの関係ー美山の茅葺民家における微生物量と温湿度の関係についてー2021

    • Author(s)
      小久保舞香、小椋大輔、伊庭千恵美、中嶋麻起子、藤枝絢子、丸山史人、藤吉 奏、能田 淳
    • Organizer
      建築学会大会2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] Water supply provides bacteria for the shower head, but the environment selects.2021

    • Author(s)
      Fujiyoshi S, Maruyama F
    • Organizer
      World Microbe Forum
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ハイブリッドアプローチによる環境ホロゲノム解析2021

    • Author(s)
      藤吉 奏
    • Organizer
      第15回日本ゲノム微生物学会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 模擬古墳における環境計測と微生物群集特性2021

    • Author(s)
      藤吉 奏
    • Organizer
      第15回日本ゲノム微生物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] IT 万歳、教える側が楽:チリで夏期短期集中ゲノム情報解析講習会を主催して2021

    • Author(s)
      河合幹彦, Andres Avila, Giovanni Larama, Raphael Verdugo, 藤吉 奏, Michel Abanto, 丸山史人, Enrique Ostria-Gallardo
    • Organizer
      第15回日本ゲノム微生物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] アンダーセンエアサンプラーとIllumina MiSeqを用いた富山市と横浜市における細菌バイオエアロゾルの特徴2020

    • Author(s)
      田中大祐、藤吉奏、丸山史人、後藤元志、小山慎一、金谷潤一、 磯部順子、綿引正則、酒徳昭宏、加賀谷重浩、中村省吾
    • Organizer
      第13回大気バイオエアロゾルシンポジウム
    • Related Report
      2020 Research-status Report
  • [Remarks] CHOBE 広島大学プロジェクト研究センター 未来共生建造環境センター

    • URL

      https://chobe.hiroshima-u.ac.jp/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 広島大学オープンイノベーション事業本部

    • URL

      https://hoip.hiroshima-u.ac.jp/research/chobe/

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2023-01-30  

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