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Development of a method for evaluating fecal contamination sources in aquatic environments based on the detection of host-specific viral genetic markers

Research Project

Project/Area Number 20H02284
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22060:Environmental systems for civil engineering-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

HARAMOTO Eiji  山梨大学, 大学院総合研究部, 教授 (00401141)

Co-Investigator(Kenkyū-buntansha) 北島 正章  北海道大学, 工学研究院, 准教授 (30777967)
端 昭彦  富山県立大学, 工学部, 講師 (70726306)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2021: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Keywordsウイルス / ファージ / 糞便汚染源解析 / 公共用水域 / 水環境
Outline of Research at the Start

水環境中の糞便汚染源の解析は,影響の大きな汚染源を特定して適切な負荷低減対策を講じ,水の微生物学的安全性を保障する上で重要となる。本研究では,ウイルスやファージが高い宿主特異性を有することに着目し,糞便汚染源となり得る試料(下水や畜産排水,動物糞便等)中で優占的かつ特異的に存在するものを「ウイルス遺伝子マーカー群」として利用することで,水環境中の糞便汚染の実態を可視化する手法を開発することを目的とする。

Outline of Final Research Achievements

This study aimed to develop a method for evaluating fecal contamination sources in aquatic environments using host-specific microbial genetic markers including viruses and phages.Somatic colipahges were assessed as a novel microbial genetic marker whether the genotype-level detection would enable analysis of fecal contamination sources.In addition, a method using high-throughput real-time PCR based on microfluidics was developed to identify fecal contamination sources in a single reaction by adding not only viruses but also Bacteroidales and mitochondrial DNA. The developed method enables to evaluate the acutal conditions of fecal contamination by wild animals, which cannot be detected by the analysis of Escherichia coli alone.

Academic Significance and Societal Importance of the Research Achievements

2022年4月に水質環境基準の衛生指標が大腸菌群から大腸菌に改正され,水環境中における大腸菌の存在実態に関する知見が蓄積されていくことに伴い,基準超過地点に対する対応策を検討していくことが重要となる。本研究の成果は,宿主特異性の高いウイルスやファージを遺伝子マーカーとして用いることにより,これまでは明らかにされてこなかった水環境中の糞便汚染源に関する知見を得ることを可能とするものであり,世界的に見ても非常に高い学術的成果が得られている。水環境中の糞便汚染源を明らかにし,高度下水処理の導入等の適切な排出負荷低減対策の実施へと繋げることで,健全な水環境の構築に貢献でき,社会的意義も高いと言える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (37 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (11 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 11 results,  Open Access: 11 results) Presentation (23 results) (of which Int'l Joint Research: 7 results,  Invited: 6 results)

  • [Int'l Joint Research] トリブバン大学(ネパール)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] テュレーン大学/モーガン州立大学(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] トリブバン大学(ネパール)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Optimization and performance evaluation of an automated filtration method for the recovery of SARS-CoV-2 and other viruses in wastewater2023

    • Author(s)
      Angga Made Sandhyana、Malla Bikash、Raya Sunayana、Kitajima Masaaki、Haramoto Eiji
    • Journal Title

      Science of The Total Environment

      Volume: 882 Pages: 163487-163487

    • DOI

      10.1016/j.scitotenv.2023.163487

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Surfactant Treatment for Efficient Gene Detection of Enteric Viruses and Indicators in Surface Water Concentrated by Ultrafiltration2023

    • Author(s)
      Hata Akihiko、Meuchi Yuno、Liu Miaomiao、Torii Shotaro、Katayama Hiroyuki
    • Journal Title

      Food and Environmental Virology

      Volume: 15 Issue: 1 Pages: 8-20

    • DOI

      10.1007/s12560-022-09543-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prevalence of antibiotic resistance genes in drinking water of the Kathmandu Valley, Nepal2022

    • Author(s)
      Thakali Ocean、Malla Bikash、Raya Sunayana、Sthapit Niva、Sherchan Samendra P.、Furukawa Takashi、Sei Kazunari、Sherchand Jeevan B.、Haramoto Eiji
    • Journal Title

      Environmental Challenges

      Volume: - Pages: 100527-100527

    • DOI

      10.1016/j.envc.2022.100527

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CrAssphage as an indicator of human-fecal contamination in water environment and virus reduction in wastewater treatment2022

    • Author(s)
      Sabar Muhammad Adnan、Honda Ryo、Haramoto Eiji
    • Journal Title

      Water Research

      Volume: 221 Pages: 118827-118827

    • DOI

      10.1016/j.watres.2022.118827

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Occurrence and Reduction of Shiga Toxin-Producing Escherichia coli in Wastewaters in the Kathmandu Valley, Nepal2022

    • Author(s)
      Sthapit Niva、Malla Bikash、Tandukar Sarmila、Ghaju Shrestha Rajani、Thakali Ocean、Sherchand Jeevan B.、Haramoto Eiji、Kazama Futaba
    • Journal Title

      Water

      Volume: 14 Issue: 14 Pages: 2224-2224

    • DOI

      10.3390/w14142224

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pilot study on wastewater surveillance of dengue virus RNA: Lessons, challenges, and implications for future research2022

    • Author(s)
      Thakali Ocean、Raya Sunayana、Malla Bikash、Tandukar Sarmila、Tiwari Ananda、Sherchan Samendra P.、Sherchand Jeevan B.、Haramoto Eiji
    • Journal Title

      Environmental Challenges

      Volume: 9 Pages: 100614-100614

    • DOI

      10.1016/j.envc.2022.100614

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Application of a high-throughput quantitative PCR system for simultaneous monitoring of SARS-CoV-2 variants and other pathogenic viruses in wastewater2022

    • Author(s)
      Malla Bikash、Thakali Ocean、Shrestha Sadhana、Segawa Takahiro、Kitajima Masaaki、Haramoto Eiji
    • Journal Title

      Science of The Total Environment

      Volume: 853 Pages: 158659-158659

    • DOI

      10.1016/j.scitotenv.2022.158659

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Detection of SARS-CoV-2 RNA in wastewater, river water, and hospital wastewater of Nepal2022

    • Author(s)
      Tandukar Sarmila、Sthapit Niva、Thakali Ocean、Malla Bikash、Sherchan Samendra P.、Shakya Bijay Man、Shrestha Laxman P.、Sherchand Jeevan B.、Joshi Dev Raj、Lama Bhupendra、Haramoto Eiji
    • Journal Title

      Science of The Total Environment

      Volume: 824 Pages: 153816-153816

    • DOI

      10.1016/j.scitotenv.2022.153816

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Virus reduction at wastewater treatment plants in Nepal2021

    • Author(s)
      Tandukar Sarmila、Ghaju Shrestha Rajani、Malla Bikash、Sthapit Niva、Sherchand Jeevan B.、Sherchan Samendra P.、Haramoto Eiji
    • Journal Title

      Environmental Challenges

      Volume: 5 Pages: 100281-100281

    • DOI

      10.1016/j.envc.2021.100281

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Possibility of Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) through Wastewater in Developing Countries2021

    • Author(s)
      Tandukar Sarmila、Khanal Rajendra、Manandhar Rija、Pandey Ashok、Sthapit Niva、Sherchan Samendra P.、Haramoto Eiji
    • Journal Title

      Water

      Volume: 13 Issue: 23 Pages: 3412-3412

    • DOI

      10.3390/w13233412

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] First environmental surveillance for the presence of SARS-CoV-2 RNA in wastewater and river water in Japan2020

    • Author(s)
      Haramoto Eiji、Malla Bikash、Thakali Ocean、Kitajima Masaaki
    • Journal Title

      Science of The Total Environment

      Volume: 737 Pages: 140405-140405

    • DOI

      10.1016/j.scitotenv.2020.140405

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ウィズコロナ時代の下水疫学調査へのハイスループットリアルタイムPCRの活用2023

    • Author(s)
      原本英司
    • Organizer
      スタンダード・バイオツールズ プロフェッショナルウェビナーシリーズ:ウィズコロナ時代に活用,マイクロフリューディクス技術の応用
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 水中ウイルス研究の進歩と社会実装を支える工学的技術開発思想2023

    • Author(s)
      北島正章
    • Organizer
      第43回環境技術思想小委員会・臨床環境技術小委員会合同講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 河川水を対象とした糞便汚染源追跡ツールとしての環境DNAメタバーコーディング法の有用性評価2023

    • Author(s)
      明地柚乃,三小田憲史,花本征也,端昭彦
    • Organizer
      第57回日本水環境学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 水中ウイルス濃縮液中のPCR 阻害物質量推定手法の検討2023

    • Author(s)
      葉山みのり,端昭彦
    • Organizer
      第57回日本水環境学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ヌタ場における微生物の存在実態調査2022

    • Author(s)
      原本英司, 八束響, Sunayana Raya, Bikash Malla, 濱端一苑, 吉田響太, 瀬川高弘, 八重樫咲子, 松林尚志
    • Organizer
      第25回日本水環境学会シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Fate of somatic coliphages as a microbial genetic marker in environmental water2022

    • Author(s)
      Nana Frempong Manso, Bikash Malla, Eiji Haramoto
    • Organizer
      Water and Environment Technology Conference Online 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development and application of high-throughput qPCR for detection of microbial source tracking markers in environmental water samples2022

    • Author(s)
      Sunayana Raya, Bikash Malla, Ocean Thakali, Made Sandhyana Angga, Takahiro Segawa, Eiji Haramoto
    • Organizer
      Water and Environment Technology Conference Online 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Genomics Methods for Identifying, Tracking and Tracing Pathogens in Irrigation Water2022

    • Author(s)
      Masaaki Kitajima
    • Organizer
      Singapore International Water Week
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 下水疫学に基づくSARS-CoV-2とノロウイルスの流行動向の都市間比較2022

    • Author(s)
      荒川千智, 左近直美, 橋本温, 岸田文, 三浦郁修, 安藤宏紀, 原本英司, 岡部聡, 北島正章
    • Organizer
      第59回環境工学研究フォーラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Applicability of F-specific Bacteriophage Subgroups as Indicators of Viral Contamination and Inactivation in Rivers in Toyama Prefecture2022

    • Author(s)
      Yuno Meuchi, Miu Nakada, Akihiko Hata, Seiya Hanamoto
    • Organizer
      Water and Environment Technology Conference Online 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RT-PCR阻害物質を含む河川水試料中のRNAウイルスを対象とした定量RT-PCR手法の比較検討2022

    • Author(s)
      葉山みのり,明地柚乃,端昭彦
    • Organizer
      第25回日本水環境学会シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 利用状況や利用者属性に応じたプール水中での化学的・微生物学的汚染指標群の関連2022

    • Author(s)
      高松由樹,端昭彦,石黒伶奈,明地柚乃,黒田啓介
    • Organizer
      第59回環境工学研究フォーラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 水環境の糞便汚染指標としてのF特異バクテリオファージの利用可能性評価2022

    • Author(s)
      明地柚乃,中田美雨,端昭彦,花本征也
    • Organizer
      第56回日本水環境学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 平常時のプール水における微生物学的水質調査2022

    • Author(s)
      高松由樹,明地柚乃,石黒伶奈,黒田啓介,端昭彦
    • Organizer
      第56回日本水環境学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Health-related water microbiology: wastewater-based epidemiology and microbial source tracking2021

    • Author(s)
      Eiji Haramoto
    • Organizer
      Virtual Conferences: ERIS International Scientific Week
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Wastewater surveillance of enteric viruses for wastewater-based epidemiology2021

    • Author(s)
      Niva Sthapit, Bikash Malla, Sarmila Tandukar, Eiji Haramoto
    • Organizer
      4th International Forum on Asian Water Environment Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Selection and application of bacteriophages as a microbial genetic marker in environmental water: the case of somatic coliphages2021

    • Author(s)
      Nana Frempong Manso, Bikash Malla, Eiji Haramoto
    • Organizer
      4th International Forum on Asian Water Environment Technology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 汚染要因の異なる富山県内3河川における微生物汚染指標の特性評価2021

    • Author(s)
      明地柚乃,中田美雨,花本征也,端昭彦
    • Organizer
      第24回日本水環境学会シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 環境水中における病原微生物の汚染実態と微生物指標の活用2021

    • Author(s)
      原本英司
    • Organizer
      第66回日本水環境学会セミナー「水環境における病原性ウイルスモニタリング技術の動向」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 環境水中の微生物遺伝子マーカーとしての体表面吸着大腸菌ファージの有効性評価2021

    • Author(s)
      伊藤聖晃, 原本英司
    • Organizer
      第55回日本水環境学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] パイロットスケールMBRを設置した下水処理場における病原・指標ウイルスの定量解析2021

    • Author(s)
      石崎知依, 木村克輝, 岡部聡, 北島正章
    • Organizer
      第55回日本水環境学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 水環境中におけるノロウイルスの汚染実態2020

    • Author(s)
      原本英司
    • Organizer
      第69回日本感染症学会東日本地方会学術集会・第67回日本化学療法学会東日本支部総会合同学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 水環境中の病原微生物の汚染実態の解明と下水疫学研究の推進2020

    • Author(s)
      原本英司
    • Organizer
      科学技術振興機構(JST)2020年度第4回理事長記者説明会
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2024-01-30  

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