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Identification of effective adjuvants for influenza vaccines in a mouse model

Research Project

Project/Area Number 19K06399
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionOsaka University (2020-2021)
The University of Tokyo (2019)

Principal Investigator

Watanabe Tokiko  大阪大学, 微生物病研究所, 教授 (60557479)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsインフルエンザワクチン / アジュバント / インフルエンザウイルス / ワクチン / インフルエンザ
Outline of Research at the Start

インフルエンザ予防には主にワクチンが用いられているが、現行の不活化ワクチンは免疫原性が低い。本研究では、マウスを用いて、自然感染とワクチン後の宿主応答の比較解析を行い、免疫記憶の誘導メカニズムの解明を目指す。さらに本研究では、ヒトでの使用が認可されている食品添加剤群に着目し、マウスモデルを用いて、現行ワクチンの効果を増強する化合物を探索する。本研究は、より効果的で安全性の高いアジュバント開発につながることが期待される。

Outline of Final Research Achievements

Influenza viruses cause seasonal and pandemic influenza. Vaccination is an effective strategy to control influenza; however, the efficacy of the currently available inactivated influenza virus vaccines is suboptimal, especially in the elderly. Vaccine efficacy can be improved by the addition of adjuvants, but few adjuvants are currently approved for human use. To explore novel, safe, and effective adjuvants for influenza vaccines, we screened 145 compounds from food additives approved in Japan and identified 41 compounds that enhanced the protective efficacy of the commercial influenza HA vaccine against lethal virus challenge in mice. Our results are of value to the development of novel and effective adjuvanted influenza or other vaccines for human and animal use.

Academic Significance and Societal Importance of the Research Achievements

副反応など安全性の問題から、新規アジュバントの薬事承認には大きなハードルがある。しかし本研究で用いる食品添加剤はヒトでの使用が承認されており、ヒトにおいて安全性が高いことが既に証明されている点に特色がある。そのため、安全面のハードルが低くなり、より早い実用化につながる可能性が高い。また本研究で同定された食品添加物は、食用の産業動物向けのワクチンに添加するアジュバントとしても期待できる。ヒトで安全性が証明されている食品添加剤を、ワクチンアジュバントとして使用することは、食用動物の感染症対策だけでなく、ヒトにおける食の安全性を確保するという点においても大きな強みとなる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] ウイスコンシン大学(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Wisconsin-Madison(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Identification of Novel Adjuvants for Ebola Virus-Like Particle Vaccine.2020

    • Author(s)
      Feng H, Nakatsu S, Lopes TJDS, Imai M, Yamayoshi S, Yamashita M, Watanabe T, Kawaoka Y.
    • Journal Title

      Vaccines (Basel)

      Volume: 8 Issue: 2 Pages: 215-215

    • DOI

      10.3390/vaccines8020215

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Injectable Excipients as Novel Influenza Vaccine Adjuvants2019

    • Author(s)
      Feng H, Yamashita M, da Silva Lopes TJ, Watanabe T, Kawaoka Y.
    • Journal Title

      Front. Microbiol

      Volume: 10 Pages: 1-9

    • DOI

      10.3389/fmicb.2019.00019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Glycolipid Adjuvant, 7DW8-5, Enhances the Protective Immune Response to the Current Split Influenza Vaccine in Mice2019

    • Author(s)
      Feng Huapeng、Nakajima Noriko、Wu Li、Yamashita Makoto、Lopes Tiago J. S.、Tsuji Moriya、Hasegawa Hideki、Watanabe Tokiko、Kawaoka Yoshihiro
    • Journal Title

      Frontiers in Microbiology

      Volume: 10 Pages: 2157-2157

    • DOI

      10.3389/fmicb.2019.02157

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Food Additives as Novel Influenza Vaccine Adjuvants2019

    • Author(s)
      Feng Huapeng、Yamashita Makoto、Wu Li、Jose da Silva Lopes Tiago、Watanabe Tokiko、Kawaoka Yoshihiro
    • Journal Title

      Vaccines

      Volume: 7 Issue: 4 Pages: 127-127

    • DOI

      10.3390/vaccines7040127

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A型インフルエンザの流行の特徴2019

    • Author(s)
      渡辺登喜子
    • Journal Title

      チャイルドヘルス

      Volume: 9

    • Related Report
      2019 Research-status Report
  • [Journal Article] 季節性インフルエンザの流行について2019

    • Author(s)
      渡辺登喜子
    • Journal Title

      インフルエンザ その他の呼吸器感染症

      Volume: 20 Pages: 39-43

    • Related Report
      2019 Research-status Report
  • [Journal Article] 鳥インフルエンザA(H5N1)について2019

    • Author(s)
      渡辺登喜子
    • Journal Title

      インフルエンザ その他の呼吸器感染症

      Volume: 21

    • Related Report
      2019 Research-status Report
  • [Presentation] Emerging zoonotic viruses: from avian influenza viruses to SARS-CoV-2.2020

    • Author(s)
      渡辺登喜子、河岡義裕
    • Organizer
      第43回日本分子生物学会
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] New approaches to the development of effective influenza vaccines.2019

    • Author(s)
      Watanabe T
    • Organizer
      The 7th International Conference & Exhibition on Influenza Vaccines for The World.
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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