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Research on hepatic pathogenesis after achieving SVR by DAA treatment for hepatitis C

Research Project

Project/Area Number 20K08369
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionNational Institute of Infectious Diseases

Principal Investigator

Wakita Takaji  国立感染症研究所, 所長, 所長 (40280789)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsC型肝炎ウイルス / HCV / SVR / 肝発癌 / DAA / C型肝炎ウイルス / 肝病態
Outline of Research at the Start

DAA投与により、多くのHCVキャリアでSVRが達成可能となった。ウイルス排除によるC型肝炎治療の目的は肝発癌の防止にあり、SVR達成後に発癌率は明らかに低下するが、一部ではSVR後の肝障害の持続や、肝発癌が問題となっている。長期間の持続感染による肝炎による細胞障害、組織障害の分子機構は十分に解明されておらず、これらの障害がDAA治療により正常化するのかは解明されていない。これまでに樹立したHCV感染モデル、動物モデル、臨床材料を用いて、HCV排除後の肝障害や発癌に関与する肝細胞の微細構造変化、遺伝子発現変化を網羅的に解析し、関連する宿主因子を同定し、肝障害改善に資する基盤的研究をおこなう。

Outline of Final Research Achievements

HCV persistently infects hepatocytes and causes chronic liver damage. As fibrosis progresses, liver lobules are remodeled, and the hemodynamics of the liver also change. Therefore, liver damage caused by persistent HCV infection involves not only viral infection and host immune response, but also changes due to tissue remodeling of the liver. Therefore, even after achieving SVR, liver injury may continue and lead to hepatocarcinogenesis. In this study, we focused on the organelle structure and gene expression changes of infected cells. We constructed HCV-uninfected cells, infected cells, and post-infection-excluded cells on a culture cell basis, and observed HCV elimination from HCV infection. There were genes that changed reversibly and irreversibly in these cells. We will further analyze these cells, analyze human liver chimeric mice and patient specimens, clarify genes that are reversibly and irreversibly changed in common, and clarify host markers related to liver damage.

Academic Significance and Societal Importance of the Research Achievements

HCVは抗ウイルス療法により95%以上のウイルス排除率が達成されている。しかし、DAAによるSVR達成後に一部の症例ではウイルス排除後の肝障害の持続や、肝発癌が問題となっている。本研究ではウイルス感染およびウイルス排除に伴う肝細胞および肝組織変化に着目し、ウイルス感染による肝臓の可逆的および不可逆的変化を解析する。ウイルス排除後も回復しない不可逆的変化とその原因となる宿主因子について解明できれば、SVR達成後の肝障害および肝発がん予防に資する検査法および治療法開発につながることが期待される。

Report

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

    (22 results)

All 2022 2021 2020

All Journal Article (14 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 14 results,  Open Access: 9 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results)

  • [Journal Article] Patient-derived monoclonal antibody neutralizes HCV infection in vitro and vivo without generating escape mutants2022

    • Author(s)
      Yokokawa Hiroshi、Shinohara Midori、Teraoka Yuji、Imamura Michio、Nakamura Noriko、Watanabe Noriyuki、Date Tomoko、Aizaki Hideki、Iwamura Tomokatsu、Narumi Hideki、Chayama Kazuaki、Wakita Takaji
    • Journal Title

      PLOS ONE

      Volume: 17 Issue: 9 Pages: e0274283-e0274283

    • DOI

      10.1371/journal.pone.0274283

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A single mutation in the E2 glycoprotein of hepatitis C virus broadens the claudin specificity for its infection2022

    • Author(s)
      Shirasago Yoshitaka、Fukazawa Hidesuke、Nagase Shotaro、Shimizu Yoshimi、Mizukami Tomoharu、Wakita Takaji、Suzuki Tetsuro、Tani Hideki、Kondoh Masuo、Kuroda Takuya、Yasuda Satoshi、Sato Yoji、Hanada Kentaro、Fukasawa Masayoshi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 20243-20243

    • DOI

      10.1038/s41598-022-23824-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Independent evolution of multi-dominant viral genome species observed in a hepatitis C virus carrier2022

    • Author(s)
      Ando Tomomi、Aizaki Hideki、Sugiyama Masaya、Date Tomoko、Hayashi Kazuhiko、Ishigami Masatoshi、Katano Yoshiaki、Goto Hidemi、Mizokami Masashi、Muramatsu Masamichi、Kuroda Makoto、Wakita Takaji
    • Journal Title

      Biochemistry and Biophysics Reports

      Volume: 32 Pages: 101327-101327

    • DOI

      10.1016/j.bbrep.2022.101327

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development and Use of a Kinetical and Real-Time Monitoring System to Analyze the Replication of Hepatitis C Virus2022

    • Author(s)
      Xiaoyu Li, Masahiko Ito, Haruyo Aoyagi, Asako Murayama, Hideki Aizaki, Masayoshi Fukasawa, Takanobu Kato, Takaji Wakita, Tetsuro Suzuki
    • Journal Title

      Int J Mol Sci

      Volume: 23 Issue: 15 Pages: 8711-8711

    • DOI

      10.3390/ijms23158711

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hepatitis C Virus-Induced ROS/JNK Signaling Pathway Activates the E3 Ubiquitin Ligase Itch to Promote the Release of HCV Particles via Polyubiquitylation of VPS4A2022

    • Author(s)
      Deng Lin、Liang Yujiao、Ariffianto Adi、Matsui Chieko、Abe Takayuki、Muramatsu Masamichi、Wakita Takaji、Maki Masatoshi、Shibata Hideki、Shoji Ikuo
    • Journal Title

      Journal of Virology

      Volume: 96 Issue: 6 Pages: 1811-21

    • DOI

      10.1128/jvi.01811-21

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of an intervention system for linkage-to-care and follow-up for hepatitis B and C virus carriers2021

    • Author(s)
      Kikuchi Minami、Sawabe Motoji、Aoyagi Haruyo、Wakae Kosho、Watashi Koichi、Hattori Satoru、Kawabe Naoto、Yoshioka Kentaro、Tanaka Junko、Muramatsu Masamichi、Wakita Takaji、Aizaki Hideki
    • Journal Title

      Hepatology International

      Volume: 16 Issue: 1 Pages: 68-80

    • DOI

      10.1007/s12072-021-10269-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Identification of natural compounds extracted from crude drugs as novel inhibitors of hepatitis C virus2021

    • Author(s)
      Zheng Xin、Guo Rui、Liu Qingbo、Wakae Kousho、Watanabe Noriyuki、Fukano Kento、Que Lusheng、Li Yingfang、Aly Hussein H.、Watashi Koichi、Suzuki Ryosuke、Murayama Asako、Kato Takanobu、Aizaki Hideki、Wakita Takaji、Huang Xiaoxiao、Yan Yi、Song Shao-Jiang、Muramatsu Masamichi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 567 Pages: 1-8

    • DOI

      10.1016/j.bbrc.2021.06.022

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Oncogenic transcriptomic profile is sustained in the liver after the eradication of the hepatitis C virus2021

    • Author(s)
      Takeda Haruhiko、Takai Atsushi、Iguchi Eriko、Mishima Masako、Arasawa Soichi、Kumagai Ken、Eso Yuji、Shimizu Takahiro、Takahashi Ken、Ueda Yoshihide、Taura Kojiro、Hatano Etsuro、Iijima Hiroko、Aoyagi Haruyo、Aizaki Hideki、Marusawa Hiroyuki、Wakita Takaji、Seno Hiroshi
    • Journal Title

      Carcinogenesis

      Volume: 42 Issue: 5 Pages: 672-684

    • DOI

      10.1093/carcin/bgab014

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Required concentration index quantifies effective drug combinations against hepatitis C virus infection2021

    • Author(s)
      Kakizoe Yusuke、Koizumi Yoshiki、Ikoma Yukino、Ohashi Hirofumi、Wakita Takaji、Iwami Shingo、Watashi Koichi
    • Journal Title

      Theoretical Biology and Medical Modelling

      Volume: 18 Issue: 1 Pages: 4-4

    • DOI

      10.1186/s12976-020-00135-6

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of microRNA associated with the elimination of hepatitis C virus genotype 1b by direct‐acting antiviral therapies2021

    • Author(s)
      Yoneyama H, Morishita A, Iwama H, Fujita K, Takahiro Masaki, Tani J, Tadokoro T, Nomura T, Sakamoto T, Oura K, Takuma K, Nakahara M, Mimura S, Deguchi A, Oryu M, Tsutsui K, Himoto T, Shimotohno K, Wakita T, Kobara H, Masaki T
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: 36 Issue: 4 Pages: 1126-1135

    • DOI

      10.1111/jgh.15224

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Occludin‐binding single‐chain variable fragment and antigen‐binding fragment antibodies prevent hepatitis C virus infection2020

    • Author(s)
      Shimizu Yoshimi、Shinoda Takehiro、Shirasago Yoshitaka、Kondoh Masuo、Shinya Naoko、Hanada Kentaro、Yagi Kiyohito、Suzuki Tetsuro、Wakita Takaji、Kimura‐Someya Tomomi、Shirouzu Mikako、Fukasawa Masayoshi
    • Journal Title

      FEBS Letters

      Volume: 595 Issue: 2 Pages: 220-229

    • DOI

      10.1002/1873-3468.13975

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sphingomyelin Is Essential for the Structure and Function of the Double-Membrane Vesicles in Hepatitis C Virus RNA Replication Factories2020

    • Author(s)
      Gewaid H, Aoyagi H, Arita M, Watashi K, Suzuki R, Sakai S, Kumagai K, Yamaji T, Fukasawa M, Kato F, Hishiki T, Mimata A, Sakamaki Y, Ichinose S, Hanada K, Muramatsu M, Wakita T, Aizaki H.
    • Journal Title

      J Virol

      Volume: 94 Issue: 23

    • DOI

      10.1128/jvi.01080-20

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Should a viral genome stay in the host cell or leave? A quantitative dynamics study of how hepatitis C virus deals with this dilemma2020

    • Author(s)
      S. Iwanami, K. Kitagawa, H. Ohashi, Y. Asai, K. Shionoya, W. Saso, K. Nishioka, H. Inaba, S. Nakaoka, T. Wakita, O. Diekmann, S. Iwami and K. Watashi
    • Journal Title

      PLoS Biology

      Volume: 18(7) Issue: 7 Pages: 3000562-3000562

    • DOI

      10.1371/journal.pbio.3000562

    • NAID

      120006872724

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prevalence of equine hepacivirus infection in Mongolia2020

    • Author(s)
      Date Tomoko、Sugiyama Masaya、Lkhagvasuren Damdindorj、Wakita Takaji、Oyunsuren Tsendsuren、Mizokami Masashi
    • Journal Title

      Virus Research

      Volume: 282 Pages: 197940-197940

    • DOI

      10.1016/j.virusres.2020.197940

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] RHV RNA複製の高いcured細胞の樹立とその評価2022

    • Author(s)
      園部円、渡邉則幸、鈴木貴也、小柳円、有村裕、相崎英樹、村松正道、脇田隆字
    • Organizer
      第69回日本ウイルス学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ラット肝炎ウイルス感染動物モデルを用いたC型肝炎ウイルスワクチン開発2022

    • Author(s)
      渡邉則幸、園部円、鈴木貴也、李天成、須崎百合子、網康至、花木賢一、小柳円、有村裕、鈴木亮介、相崎英樹、村松正道、脇田隆字
    • Organizer
      第69回日本ウイルス学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ウイルス肝炎基礎研究の新たな展開2022

    • Author(s)
      脇田隆字、相崎英樹
    • Organizer
      日本消化器病学会総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 30 years of HCV Virology2021

    • Author(s)
      Takaji Wakita
    • Organizer
      27th International Symposium on Hepatitis C Virus and Related Viruses
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] HCV virology and HCC after SVR2021

    • Author(s)
      Takaji Wakita, Haruyo Aoyagi, Tomoko Date, Noriyuki Watanabe, Hideki Aizaki, Masamichi Muramats
    • Organizer
      The 17th International Symposium on Viral Hepatitis and Liver Diseases (ISVHLD)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Hepatocellular carcinoma in SVR achieved CHC patients after DAA treatment2021

    • Author(s)
      Takaji Wakita, Haruyo Aoyagi, Tomoko Date, Noriyuki Watanabe, Hideki Aizaki, Masamichi Muramatsu
    • Organizer
      JSH International Liver Conference 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 今年のノーベル医学生理学賞は「The discovery of Hepatitis C Virus(C型肝炎ウイルスの発見)」が受賞したことを祝して2021

    • Author(s)
      脇田隆字
    • Organizer
      第43回日本肝臓学会東部会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 今年のノーベル医学生理学賞は「The discovery of Hepatitis C Virus (C型肝炎ウイルスの発見)」が受賞したことを祝して2020

    • Author(s)
      脇田隆字
    • Organizer
      第43回日本肝臓学会東部会
    • Related Report
      2020 Research-status Report
    • Invited

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

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