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Analysis of relationship between protein quality control system and pathogenesis of encephalitis by flavivirus infection

Research Project

Project/Area Number 18K14574
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionHokkaido University

Principal Investigator

Kobayashi Shintaro  北海道大学, 獣医学研究院, 助教 (00634205)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsフラビウイルス / 細胞内タンパク質品質管理 / オートファジー / AMPK / 神経病原性 / タンパク質品質管理 / 粒子形成 / 小胞輸送
Outline of Final Research Achievements

To elucidate mechanism of encephalitis, we examined the relationship between protein quality control system, such as autophagy, and flavivirus infection. Capsid protein of flavivirus inhibited autophagy and induced accumulation of ubiquitinated protein aggregates. The capsid protein interacted with AMP-activated protein kinase (AMPK) and induced degradation of AMPK. Furthermore, the interaction affected pathogenesis of flavivirus encephalitis in mouse. Taken together, these results indicates that degradation of AMPK by capsid protein resulted in the inhibition of autophagy and the accumulation of protein aggregates, which contributes to the development of neurological disease.

Academic Significance and Societal Importance of the Research Achievements

多くのウイルスは、タンパク質などを分解・除去するオートファジーにより、増殖が抑制される。本研究により神経向性フラビウイルスはオートファジーを抑制し、その結果、ウイルスに感染した細胞にタンパク質の凝集体の形成を誘導して、細胞死及び脳炎を引き起こすことが明らかになった。更にウイルスが感染した細胞にオートファジーを誘導することでタンパク質の凝集体が除去され、細胞死が抑えられることも明らかになった。多くのウイルス性脳炎は病気の発生メカニズムがわかっておらず、特異的な治療法もない。本研究結果は特異的な治療法が存在しない多くのウイルス性脳炎に対し、病気の発生メカニズムや治療法の開発につながる成果である。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (25 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (14 results) (of which Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] The Czech Academy of Sciences(チェコ)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Amino acid 159 of the envelope protein affects viral replication and T-cell infiltration by West Nile virus in intracranial infection2020

    • Author(s)
      Kobayashi Shintaro、Kaneko chisato、Kawakami Ryoko、Hasebe Rie、Sawa Hirofumi、Yoshii Kentaro、Kariwa Hiroaki
    • Journal Title

      Scientific Reports

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of tick-borne encephalitis virus isolated from a tick in central Hokkaido in 20172020

    • Author(s)
      Takahashi Yuji、Kobayashi Shintaro、Ishizuka Mariko、Hirano Minato、Muto Memi、Nishiyama Shoko、Kariwa Hiroaki、Yoshii Kentaro
    • Journal Title

      Journal of General Virology

      Volume: - Issue: 5 Pages: 497-509

    • DOI

      10.1099/jgv.0.001400

    • NAID

      120006988170

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] West Nile virus capsid protein inhibits autophagy by AMP-activated protein kinase degradation in neurological disease development2020

    • Author(s)
      Kobayashi Shintaro、Yoshii Kentaro、Phongphaew Wallaya、Muto Memi、Hirano Minato、Orba Yasuko、Sawa Hirofumi、Kariwa Hiroaki
    • Journal Title

      PLOS Pathogens

      Volume: 16 Issue: 1 Pages: e1008238-e1008238

    • DOI

      10.1371/journal.ppat.1008238

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Serological evidence of Zika virus infection in non-human primates in Zambia2019

    • Author(s)
      Christida E. Wastika、Michihito Sasaki、Kentaro Yoshii、Paulina D. Anindita、Bernard M. Hang’ombe、Aaron S. Mweene、Shintaro Kobayashi、Hiroaki Kariwa、Michael J. Carr、William W. Hall、Yuki Eshita、Yasuko Orba、Hirofumi Sawa
    • Journal Title

      Archives of Virology

      Volume: 164 Issue: 8 Pages: 2165-2170

    • DOI

      10.1007/s00705-019-04302-0

    • NAID

      120006876275

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] <b>Targeting of severe fever with thrombocytopenia syndrome virus structural proteins to the ERGIC (endoplasmic reticulum Golgi intermediate compartment) and Golgi </b><b>complex </b>2018

    • Author(s)
      Lundu T, Tsuda Y, Ito R, Shimizu K, Kobayashi S, Yoshii K, Yoshimatsu K, Arikawa J, Kariwa H
    • Journal Title

      Biomedical Research

      Volume: 39 Issue: 1 Pages: 27-38

    • DOI

      10.2220/biomedres.39.27

    • NAID

      130006394280

    • ISSN
      0388-6107, 1880-313X
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Detection of novel gammaherpesviruses from fruit bats in Indonesia.2018

    • Author(s)
      Wada Y, Sasaki M, Setiyono A, Handharyani E, Rahmadani I, Taha S, Adiani S, Latief M, Kholilullah ZA, Subangkit M, Kobayashi S, Nakamura I, Kimura T, Orba Y, Sawa H
    • Journal Title

      Journal of Medical Microbiology

      Volume: 67(3) Issue: 3 Pages: 415-422

    • DOI

      10.1099/jmm.0.000689

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification and analysis of host proteins that interact with the 3′-untranslated region of tick-borne encephalitis virus genomic RNA2018

    • Author(s)
      Muto Memi、Kamitani Wataru、Sakai Mizuki、Hirano Minato、Kobayashi Shintaro、Kariwa Hiroaki、Yoshii Kentaro
    • Journal Title

      Virus Reserch

      Volume: 249 Pages: 52-56

    • DOI

      10.1016/j.virusres.2018.03.006

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Serologic Evidence of Tick-Borne Encephalitis Virus Infection in a Patient with Suspected Lyme Disease in Japan.2018

    • Author(s)
      Yoshii K, Sato K, Ishizuka M, Kobayashi S, Kariwa H, Kawabata H.
    • Journal Title

      Am J Trop Med Hyg.

      Volume: 99 Issue: 1 Pages: 180-181

    • DOI

      10.4269/ajtmh.18-0207

    • NAID

      120006649186

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of a serodiagnostic IgM-ELISA for tick-borne encephalitis virus using subviral particles with strep-tag.2018

    • Author(s)
      Nakayasu M, Hirano M, Muto M, Kobayashi S, Kariwa H, Yoshii K
    • Journal Title

      Ticks Tick Borne Dis.

      Volume: 9 Issue: 6 Pages: 1391-1394

    • DOI

      10.1016/j.ttbdis.2018.06.010

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 2017年に、2018年に北海道道央地域のヤマトマダニから分離されたダニ媒介性脳炎ウイルスの性状解析2019

    • Author(s)
      高橋侑嗣,小林進太郎,石塚万里子,平野港,武藤芽未,西山祥子,中尾亮,苅和宏明,好井健太朗
    • Organizer
      日本ウイルス学会北海道支部 第53回夏季シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] ウエストナイルウイルスのカプシドタンパク質とAMPKの相互作用の解析2019

    • Author(s)
      鈴木健矢,小林進太郎,好井健太朗,苅和宏明
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 2017、2018年に北海道道央地域のヤマトマダニから分離されたダニ媒介性脳炎ウイルスの性状解析2019

    • Author(s)
      高橋侑嗣,小林進太郎,石塚万里子,中尾亮,苅和宏明,好井健太朗
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] エンベロープタンパク質のアミノ酸変異によるウエストナイルウイルスの増殖および病態形 成への影響2019

    • Author(s)
      小林進太郎,金子知里,川上怜子,長谷部理絵,澤洋文,好井健太朗,苅和宏明
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ウエストナイルウイルス感染によるAMP-activated protein kinaseの分解機構の解析2019

    • Author(s)
      小林進太郎、鈴木健矢、好井健太朗、苅和宏明
    • Organizer
      第26回トガ・フラビ・ペスチ研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Roles of an amino acid at 159 in envelope protein in replication and pathogenicity of West Nile virus2019

    • Author(s)
      Shintaro Kobayashi, Chisato Kaneko, Ryoko Kawakami, Rie Hasebe, Hirofumi Sawa, Kentaro Yoshii, Hiroaki Kariwa
    • Organizer
      第67回日本ウイルス学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Characterization of tick-borne encephalitis virus isolated from Ixodes ovatus in Central Hokkaido in 2017, 20182019

    • Author(s)
      Yuji Takahashi,Shintaro Kobayashi, Mariko Ishizuka,Ryo Nakao, Hiroaki Kariwa,Kentaro Yoshii
    • Organizer
      第67回日本ウイルス学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ウエストナイルウイルス感染で起こるAMP-activated protein kinaseの分解とオートファジーの抑制による神経病態形成への影響2019

    • Author(s)
      小林進太郎、好井健太朗、Wallaya Phongpaew、武藤芽未、平野港、大場靖子、澤洋文、苅和宏明
    • Organizer
      第5回北海道大学部局横断シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] ウエストナイルウイルス感染で起こるAMP-activated protein kinaseの分解およびオートファジーの抑制による神経病態形成への影響2019

    • Author(s)
      小林進太郎、好井健太朗、Wallaya Phongpaew、武藤芽未、平野港、大場靖子、澤洋文、苅和宏明
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Role of autophagy in the pathogenesis of West Nile virus infection2019

    • Author(s)
      Shintaro Kobayashi, Kentaro Yoshii, Hirofumi Sawa, Hiroaki Kariwa
    • Organizer
      Joint Czechoslovac Virology Conference 2019 and 1st SK-AT Structural Virology Meeting
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Autophagy inhibition through AMP-activated protein kinase degradation in West Nile virus-induced neurological disease2018

    • Author(s)
      Shintaro Kobayashi,Kentaro Yoshii,Wallaya Phongphaew,Memi Muto,Minato Hirano, Yasuko Orba,Hirofumi Sawa,Hiroaki Kariwa
    • Organizer
      第66回日本ウイルス学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] ウエストナイルウイルスの増殖および病原性発現におけるユビキチンの機能解析2018

    • Author(s)
      川上怜子、小林進太郎、好井健太朗、苅和宏明
    • Organizer
      第66回日本ウイルス学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] ウエストナイルウイルス感染で起こるオートファジーの抑制と神経病態形成の関係2018

    • Author(s)
      小林進太郎、好井健太朗、Phongpaew Wallaya、武藤芽未、平野港、大場靖子、澤洋文、苅和宏明
    • Organizer
      第161回日本獣医学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] ユビキチンの蓄積に着目したウエストナイルウイルスの病原性解析2018

    • Author(s)
      川上怜子、小林進太郎、好井健太朗、苅和宏明
    • Organizer
      第161回日本獣医学会学術集会
    • Related Report
      2018 Research-status Report
  • [Remarks] ウイルス性脳炎はオートファジーの抑制により発症~ウエストナイルウイルスの病態発症機構を発見~

    • URL

      https://www.hokudai.ac.jp/news/2020/01/post-618.html

    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2021-02-19  

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