• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Do ancient viral genes derived from endogenous viral elements induce significant fitness costs in mosquitoes?

Research Project

Project/Area Number 21K19119
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 39:Agricultural and environmental biology and related fields
Research InstitutionEhime University

Principal Investigator

Suzuki Yasutsugu  愛媛大学, 沿岸環境科学研究センター, 特定准教授 (00896087)

Co-Investigator(Kenkyū-buntansha) 堀江 真行  大阪公立大学, 大学院獣医学研究科, 教授 (20725981)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords内在性ウイルス配列 / 媒介蚊 / 古代ウイルス
Outline of Research at the Start

シマカ属の蚊はヒト病原性ウイルスに加え、人に感染性のない蚊特異的ウイルスにも感染している。一方で媒介蚊に深刻な病態を示すウイルスの報告は皆無である。そのため、シマカに高い病原性を持つウイルスの同定は、新たな媒介蚊制御法につながり得る。本研究では、蚊病原性ウイルスの探索元として、現存するウイルスではなく、シマカのゲノムに化石として残るウイルス遺伝情報の内在性ウイルス配列に着目し、蚊に深刻な病態を誘導する古代のウイルス遺伝子の同定と復元に挑戦する。

Outline of Final Research Achievements

Aedes mosquitoes are known to transmit numerous human pathogenic viruses, yet there are scant reports of viruses inducing severe pathology in Aedes mosquitoes themselves. This study hypothesized that ancient viruses may have possessed high pathogenicity for vector mosquitoes and employed various bioinformatics tools to explore endogenous viral elements (EVEs). In the end, we chose and performed tBLASTn searches on multiple Aedes aegypti genomes, identified EVEs with extended open reading frames (ORFs), and identified several novel EVEs. These genes were then artificially synthesized and overexpressed in Aedes aegypti cell lines and individuals with no obvious cytopathic effects or reduction in mosquito survival. Although we were not able to find pathogenic gene in the mosquitoes, our findings suggest the presence of novel EVEs with ORFs and highlight the evolved tolerance of Aedes mosquitoes to viral infections.

Academic Significance and Societal Importance of the Research Achievements

多くのヒト病原性ウイルスを媒介するシマカは、自身がウイルスに感染しても重篤な病態を示さないため、蚊に病態を誘導するウイルスの同定は、その制御につながる。我々は、その探索元として、古代のウイルスに着目し、シマカのゲノムに残る内在性ウイルス配列(EVE)を様々な生命情報学ツールで探索を実施した。その結果、新たな古代ウイルス由来と考えられる遺伝子を同定し、人工合成を行った。これらの遺伝子をシマカの細胞株と個体内で発現させたが、細胞傷害や寿命の減退は見られなかった。本研究はEVE探索の適切なツール選択の重要性とシマカのウイルスに対する高い寛容性を示唆し、ウイルスと蚊の共進化の理解を深めた。

Report

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

    (17 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (5 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Int'l Joint Research] パスツール研究所(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] マウラナ バシャニ科学技術大学(バングラデシュ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] オランダ国立公衆衛生環境研究所(オランダ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] パスツール研究所(フランス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] パスツール研究所(フランス)

    • Related Report
      2021 Research-status Report
  • [Journal Article] In vitro characterization of cell-fusing agent virus DNA forms in Aedes aegypti mosquitoes2024

    • Author(s)
      Uddin Mohammad Mosleh、Suzuki Yasutsugu、Reyes Jerica Isabel L.、Watanabe Kozo
    • Journal Title

      Virology

      Volume: 591 Pages: 109982-109982

    • DOI

      10.1016/j.virol.2024.109982

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] No detectable fitness cost of infection by cell-fusing agent virus in <i>Aedes aegypti</i> mosquitoes2024

    • Author(s)
      Suzuki Yasutsugu、Suzuki Takahiro、Miura Fuminari、Reyes Jerica Isabel L.、Asin Irish Coleen A.、Mitsunari Wataru、Uddin Mohammad Mosleh、Sekii Yu、Watanabe Kozo
    • Journal Title

      Royal Society Open Science

      Volume: 11 Issue: 1 Pages: 231373-231373

    • DOI

      10.1098/rsos.231373

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Understanding mosquito-virus interactions toward controlling mosquito borne virus infections2023

    • Author(s)
      Yasutsugu Suzuki
    • Organizer
      Singapore Society for Microbiology and Biotechnology 50th Anniversary Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ネッタイシマカと蚊特異的ウイルスをモデルとした媒介蚊-ウイルス相互作用の理解2023

    • Author(s)
      鈴木康嗣, 鈴木貴大, Jerica Isabel L Reyes, Mohammad Mosleh Uddin, Irish Coleen Asin, 三浦郁修, Artem Baidaliuk, Etienne Simon-Loriere, Louis Lambrechts, Maria Carla Saleh, 渡辺幸三
    • Organizer
      第57回日本脳炎ウイルス生態学研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 昆虫特異的ウイルスcell-fusing agent virus自然感染蚊における個体内ウイルス動態とウイルスDNA産生の解析2023

    • Author(s)
      鈴木康嗣, Asin A. Irish Coleen, 光成渉, Mohammad Mosleh Uddin, Reyes L. Jerica Isabel, 渡辺幸三
    • Organizer
      第70回日本ウイルス学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Understanding biology of insect-specific viruses toward controlling arbovirus transmission2023

    • Author(s)
      Yasutsugu Suzuki, Irish Coleen A. Asin,, Takahiro Suzuki,, Fuminari Miura, Artem Baidaliuk, Jerica Isabel L. Reyes,, Mohammad Mosleh Uddin,, Sekii Yu, Etienne Simon-Loriere, Louis Lambrechts, Maria Carla Saleh and Kozo Watanabe
    • Organizer
      Mosquito-borne Disease Control from Ecological Approaches
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Replication kinetics and tissue tropism of insect-specific viruses in a naturally infected Aedes aegypti colony2023

    • Author(s)
      Irish Coleen Angelo Asin, Yasutsugu Suzuki, Artem Baidaliuk, Wataru Mitsunari, Etienne Simon-Loriere, Kozo Watanabe
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Viral DNA forms of cell-fusing agent virus (CFAV) are produced in Aedes aegypti mosquito in vitro and in vivo2022

    • Author(s)
      Mohammad Mosleh UDDIN, Yasutsugu SUZUKI, Takahiro SUZUKI, Jerica Isabel L. REYES, Kozo WATANABE
    • Organizer
      第69回日本ウイルス学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Understanding antiviral immunity in Aedes mosquitoes from nanoscale to macroscale2022

    • Author(s)
      Yasutsugu SUZUKI
    • Organizer
      PASTEUR JAPAN 2022 SYMPOSIUM: FRANCE-JAPAN COOPERATION ON HEALTH
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Characterization of the viral DNA formation of cell-fusing agent virus (CFAV) in Aedes aegypti mosquito cell lines2022

    • Author(s)
      Yasutsugu SUZUKI, Mohammad Mosleh UDDIN, Takahiro SUZUKI, Jerica Isabel L. REYES, Kozo WATANABE
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Viral DNA forms of cell fusing agent virus (CFAV) are produced in Aedes aegypti mosquito cell lines2021

    • Author(s)
      Mohammad Mosleh Uddin, Yasutsugu Sujuki, Kozo Watanabe
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 環境生態・保健研究室における媒介蚊-ウイルス相互作用研究の紹介2021

    • Author(s)
      鈴木康嗣, Jerica Isabel L Reyes, Mohammad Mosleh Uddin, 鈴木貴大, 韋子成, 大村瑞羅, 渡辺幸三
    • Organizer
      第27回トガ・フラビ・ペスチウイルス研究会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi