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2019 Fiscal Year Annual Research Report

Investigation of latent pathogenic viruses in Latin America and South-eastern Asia by virome analysis

Research Project

Project/Area Number 16H05805
Research InstitutionHokkaido University

Principal Investigator

澤 洋文  北海道大学, 人獣共通感染症リサーチセンター, 教授 (30292006)

Co-Investigator(Kenkyū-buntansha) 大場 靖子  北海道大学, 人獣共通感染症リサーチセンター, 講師 (60507169)
佐々木 道仁  北海道大学, 人獣共通感染症リサーチセンター, 特任助教 (70609403)
Project Period (FY) 2016-04-01 – 2020-03-31
Keywordsウイルス / ゲノム / 新興・再興感染症
Outline of Annual Research Achievements

本研究は、現在申請者が有している国際ネットワークを活用し、調査フィールドを線として繋げ、Virome解析手法等を用いて、新興・再興感染症の原因となる新規及び既知の病原体の分布状況を把握すること、得られた情報を既得の情報と比較することにより病原性ウイルスの分布・進化・生活環を把握することを目指す。
2018年度にボリビアのトリニダ地域で採集した蚊を用いてウイルスの探索を実施した結果同定した3種の新規フラビウイルスについて、各種培養細胞を用いて単離を試みると同時に、ウイルスゲノムの遺伝子解析、単離ウイルスの性状解析を実施した。3種の内、2種の蚊特異的ウイルス(cISF)は培養細胞を用いたウイルス単離が出来なかったため、ウイルスが検出された蚊プールのRNAを用いたNGS解析によりウイルスゲノムのほぼ全長を同定した。残る1種の新規のフラビウイルスはC6/36ヒトスジシマカ由来細胞を用いて単離に成功した。培養上清中には40 nmのウイルス粒子を電子顕微鏡で確認した。ウイルスゲノムはNGSおよびRACE法により全長を同定した。系統樹解析の結果から、新規に単離したウイルスはdual-host affiliated flaviviruses (dISFs)に属するフラビウイルスと考えられた。
ベトナムの国立衛生疫学研究所のThe Ireland Vietnam Blood Borne Virus Initiative (IVVI)と共同して、ハノイ市内で採集したメス蚊48プールから抽出したRNAを用いてフラビウイルス、ブニヤウイルス、アルファウイルスのスクリーニングおよびデング1型、チクングニヤウイルスの特異的qRT-PCRを実施した。その結果、各フラビウイルスおよびチクングニヤウイルスは検出されなかった。
インドネシアのボゴール農業大学獣医学部のSetiyono教授と共同して、ウシから抽出した核酸を用いて病原体のゲノムを検出することを試みた。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (24 results)

All 2020 2019 Other

All Int'l Joint Research (6 results) Journal Article (7 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Book (1 results) Remarks (1 results)

  • [Int'l Joint Research] Oswaldo Cruz Institute/Evandro Chagas National Institute(ブラジル)

    • Country Name
      BRAZIL
    • Counterpart Institution
      Oswaldo Cruz Institute/Evandro Chagas National Institute
  • [Int'l Joint Research] Universidad Autonoma Gabriel Rene Moreno(ボリビア)

    • Country Name
      BOLIVIA
    • Counterpart Institution
      Universidad Autonoma Gabriel Rene Moreno
  • [Int'l Joint Research] The University of Zambia/Central Veterinary Research Institute/University Teaching Hospitals(ザンビア)

    • Country Name
      ZAMBIA
    • Counterpart Institution
      The University of Zambia/Central Veterinary Research Institute/University Teaching Hospitals
    • # of Other Institutions
      1
  • [Int'l Joint Research] Central Veterinary Res. & Diagn. Labo.(ジンバブエ)

    • Country Name
      ZIMBABWE
    • Counterpart Institution
      Central Veterinary Res. & Diagn. Labo.
  • [Int'l Joint Research] Bogor Agricultural University(インドネシア)

    • Country Name
      INDONESIA
    • Counterpart Institution
      Bogor Agricultural University
  • [Int'l Joint Research]

    • # of Other Countries
      2
  • [Journal Article] Detection of novel orthoreovirus genomes in shrew (Crocidura hirta) and fruit bat (Rousettus aegyptiacus).2020

    • Author(s)
      Harima H, Sasaki M, Kajihara M, Mori-Kajihara A, Hang'ombe BM, Changula K, Orba Y, Ogawa H, Simuunza M, Yoshida R, Mweene A, Takada A, Sawa H
    • Journal Title

      J Vet Med Sci

      Volume: 82(2) Pages: 162-167

    • DOI

      10.1292/jvms.19-0424.

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] West Nile Virus in Farmed Crocodiles, Zambia, 20192020

    • Author(s)
      Simulundu E, Ndashe K, Chambaro HM, Squarre D, Reilly PM, Chitanga S, Changula K, Mukubesa AN, Ndebe J, Tembo J, Kapata N, Bates M, Sinkala Y, Hang'ombe BM, Nalubamba KS, Kajihara M, Sasaki M, Orba Y, Takada A, Sawa H.
    • Journal Title

      Emerg Infect Dis.

      Volume: 26(4): Pages: 811-814

    • DOI

      10.3201/eid2604.190954.

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Discovery and genetic characterization of diverse smacoviruses in Zambian non-human primates2019

    • Author(s)
      Anindita PD, Sasaki M, Gonzalez G, Phongphaew W, Carr M, Hang'ombe BM, Mweene AS, Ito K, Orba Y, Sawa H
    • Journal Title

      Sci Rep

      Volume: 9(1) Pages: 5045

    • DOI

      10.1038/s41598-019-41358-z

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Field diagnosis and genotyping of chikungunya 1 virus using a dried reverse transcription loop-mediated isothermal amplification (LAMP) assay and MinION sequencing.2019

    • Author(s)
      Hayashida K, Orba Y, Sequeira PC, Sugimoto C, Hall WW, Eshita Y, Suzuki Y, Runtuwene L, Brasil P, Calvet G, Rodrigues CDS, dos Santos CC, Mares-Guia MAM, Yamagshi J, de Filippis AMB, Sawa H
    • Journal Title

      PLoS Neg Trop Dis

      Volume: 13(6) Pages: e0007480

    • DOI

      10.1371/journal.pntd.0007480

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Serological evidence of Zika virus infection in non-human primates in Zambia2019

    • Author(s)
      Wastika CE, Sasaki M, Yoshii K, Anindita PD, Hang'ombe BM, Mweene AS, Kobayashi S, Kariwa H, Carr MJ, Hall WW, Eshita Y, Orba Y, Sawa H
    • Journal Title

      Arch Virol

      Volume: 164(8) Pages: 2165-2170

    • DOI

      10.1007/s00705-019-04302-0

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Upregulated expression of the antioxidant sestrin 2 identified by transcriptomic analysis of Japanese encephalitis virus-infected SH-SY5Y neuroblastoma cells.2019

    • Author(s)
      Carr M, Gonzalez G, Martinelli A, Wastika CE, Ito K, Orba Y, Sasaki M, Hall WW, Sawa H
    • Journal Title

      Virus Genes

      Volume: 55(5) Pages: 630-642

    • DOI

      10.1007/s11262-019-01683-x

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Genetic diversity of rabies virus in different host species and geographic regions of Zambia and Zimbabwe.2019

    • Author(s)
      Muleya W, Chambaro HM, Sasaki M, Gwenhure LF, Mwenechanya R, Kajihara M, Saasa N, Mupila Z, Mori-Kajihara A, Qiu Y, Kangwa E, Mweene A, Namangala B, Takada A, Sawa H
    • Journal Title

      Virus Genes

      Volume: 55(5) Pages: 713-719

    • DOI

      10.1007/s11262-019-01682-y

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Discoveries of dual-host affiliated insect-specific flaviviruses in Zambia.2020

    • Author(s)
      Christida E. Wastika, Yasuko Orba, Michihito Sasaki, Yuki Eshita, Bernard M. Hang'ombe, Michael T. Wolfinger, William W. Hall, Hirofumi Sawa
    • Organizer
      U.S.-Japan Cooperative Medical Sciences Program's 22nd International Conference on Emerging Infectious Diseases in the Pacific Rim
    • Int'l Joint Research
  • [Presentation] ザンビアの野生動物、節足動物からの病原体の検出と単離2019

    • Author(s)
      澤 洋文、佐々木 道仁、江下 優樹、大場 靖子
    • Organizer
      第2回SFTS研究会・学術集会
  • [Presentation] Research activities of Hokkaido Univ. CZC in Zambia and human resource development of young researchers2019

    • Author(s)
      Yasuko Orba
    • Organizer
      Tsukuba Conference 2019
    • Int'l Joint Research / Invited
  • [Presentation] Developmental Strategy of the International Collaboration Research for Zoonosis Control - Identification of pathogens from arthropods and wildlife in Zambia2019

    • Author(s)
      Hirofumi Sawa, Michihito Sasaki, Yongjin Qiu, Yuki Eshita, Hang'ombe BM, Mweene AS, Yasuko Orba
    • Organizer
      Tsukuba Conference 2019
    • Int'l Joint Research / Invited
  • [Presentation] Molecular characterization of Barkedji and Barkeji-like virus isolated from mosquitoes in Zambia2019

    • Author(s)
      Christida Wastika, Michihito Sasaki, Yasuko Orba, Hirofumi Sawa
    • Organizer
      第67回日本ウイルス学会学術集会
  • [Presentation] Molecular and serological surveillance for Bluetongue virus in Zambia2019

    • Author(s)
      Herman Chambaro, Michihito Sasaki, Yasuko Orba, Hirofumi Sawa
    • Organizer
      第67回日本ウイルス学会学術集会
  • [Presentation] Evolutionary history of genotype I african swine fever viruses detected in Ornithodoros moubata soft ticks from Zambia: Implications for disease control2019

    • Author(s)
      Chambaro Herman, Michhito Sasaki, Gonzalez Gabriel, Yonjin Qiu, Yasuko Orba, Hirofumi Sawa
    • Organizer
      第5回北海道大学部局横断シンポジウム
  • [Presentation] Isolation and identification of dual-host affiliated insect-specific flaviviruses from Culex mosquitoes in Zambia2019

    • Author(s)
      Christida Wastika, Michihito Sasaki, Yasuko Orba, Hirofumi Sawa
    • Organizer
      第42回日本分子生物学会年会
  • [Presentation] Diverse endogenous flavivirus elements in field mosquitoes2019

    • Author(s)
      Yasuko Orba, Bernard M. Hang'ombe, Aaron S. Mweene, Michihito Sasaki, Yuki Eshita, Hirofumi Sawa
    • Organizer
      第42回日本分子生物学会年会
  • [Book] Bat Polyomaviruses: A Challenge to the Strict Host-Restriction Paradigm within the Mammalian Polyomaviridae in "Bats and Viruses: Current Research and Future Trends "2020

    • Author(s)
      Michael J. Carr, Gabriel Gonzalez, Emma C. Teeling, Hirofumi Sawa
    • Total Pages
      246
    • Publisher
      Caister Academic Press
    • ISBN
      978-1-912530-14-4
  • [Remarks] 北海道大学 人獣共通感染症リサーチセンター 分子病態・診断部門

    • URL

      http://www.czc.hokudai.ac.jp/pathobiol/

URL: 

Published: 2021-01-27  

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