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Functional analysis of novel substances from food materials showing strong abilities of innate immunity stimulation

Research Project

Project/Area Number 21H02733
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49050:Bacteriology-related
Research InstitutionTeikyo University

Principal Investigator

Sekimizu Kazuhisa  帝京大学, 薬学部, 教授 (90126095)

Co-Investigator(Kenkyū-buntansha) 宮下 惇嗣  帝京大学, 付置研究所, 講師 (40818308)
浜本 洋  山形大学, 医学部, 教授 (90361609)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2022: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Keywordsカイコ / 自然免疫 / 食品 / 乳酸菌 / 新規天然物 / ペプチドグリカン / 緑膿菌感染症 / 乳酸菌Weissella hellenica / 緑膿菌 / カイコ感染モデル / マウス感染モデル / 創薬 / primed immune response / カイコ創薬
Outline of Research at the Start

人類は感染症を克服できていない。新型コロナウイルス感染症(Covid-19)のような新興感染症に対しては、治療効果が立証されている化合物による化学療法や、確立されたワクチン法の選択肢が極めて限定的である。新興感染症が流行すると、感染経路別の標準予防策(マスク着用など)以外に効果的な感染対策がない。また、臨床現場では常に薬剤耐性菌 が問題となっている。こうした課題を克服するには、化学療法やワクチンを補完する新しい感染制御戦略が必要である。本研究では、化学療法やワクチンを補完する感染制御戦略を提案する。

Outline of Final Research Achievements

When silkworms were injected with the culture supernatant of the lactic acid bacterium W. hellenica, the silkworms became resistant to Pseudomonas aeruginosa. Effects were also observed on mice. Acquisition of infection resistance requires 6 hours or more after injection, so it depends on activating the immune system. We named this substance Weisseri kaikosin (WK), attempted to purify it from the culture supernatant, and obtained a fraction that showed a single peak on HPLC. Furthermore, the structure of the compound was determined by NMR and ESI-MS/MS analysis. As a result, WK was found to be a novel peptidoglycan-like compound.

Academic Significance and Societal Importance of the Research Achievements

最近の研究により、自然免疫が感染防御に重要な役割を演じていることが判明している。しかしながら、自然免疫を活性化することにより感染防御を果たす食品成分の例は極めて限られている。本研究において我々は、乳酸菌W. hellenicaの培養上清に見出した緑膿菌感染防御効果を示す成分を精製し、その構造を決定することに成功した。この物質は健康食品や医薬品としての応用が期待される。また、本研究の成果を基に、自然免疫の活性化による感染防御に働く食品中の物質について、今後他の例が明らかにされてゆくと期待される。また本研究は、実験動物としてのカイコの有用性を明らかにした点においても評価されるべきものである。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • Research Products

    (12 results)

All 2024 2023 2022

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 7 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Molecular Editing Enhances Oxidation Resistance of Menaquinone-Targeting Antibiotics Lysocin E and WAP-8294A22023

    • Author(s)
      Junhao Fu, Yosuke Nakata, Hiroaki Itoh, Suresh Panthee, Hiroshi Hamamoto, Kazuhisa Sekimizu, Masayuki Inoue
    • Journal Title

      Chemistry - A European Journal

      Volume: 29 Issue: 47

    • DOI

      10.1002/chem.202301224

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Construction of Five Tryptophan Isomers and Application of the Isomers to Solid-Phase Total Syntheses of Lysocin E Derivatives2023

    • Author(s)
      Yosuke Nakata, Junhao Fu, Hiroaki Itoh, Suresh Panthee, Hiroshi Hamamoto, Kazuhisa Sekimizu, Masayuki Inoue
    • Journal Title

      Chemistry - A European Journal

      Volume: 29 Issue: 43

    • DOI

      10.1002/chem.202301225

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] High molecular weight glucose homopolymer of broccoli (Brassica oleracea var. italica) stimulates both invertebrate and mammalian immune systems2023

    • Author(s)
      Atsushi Miyashita,Keiko Kataoka,Toshio Tsuchida,Akihiko A.Ogasawara,Hiroto Nakajima,Megumu Takahashi,Kazuhisa Sekimizu
    • Journal Title

      Frontiers in Food Science and Technology

      Volume: 3 Pages: 1012121-1012121

    • DOI

      10.3389/frfst.2023.1012121

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Silkworm arylsulfatase in the midgut content is expressed in the silk gland and fed <i>via</i> smearing on the food from the spinneret2022

    • Author(s)
      Hiroshi Hamamoto,Atsushi Miyashita,Koushirou Kamura,Ryo Horie,Kazuhisa Sekimizu
    • Journal Title

      Drug Discoveries & Therapeutics

      Volume: 16 Issue: 6 Pages: 280-285

    • DOI

      10.5582/ddt.2022.01088

    • ISSN
      1881-7831, 1881-784X
    • Year and Date
      2022-12-25
    • Related Report
      2022 Annual Research Report
    • Open Access
  • [Journal Article] Surrounding gas composition affects the calling song development in the two-spotted cricket (<i>Gryllus bimaculatus</i>)2022

    • Author(s)
      Miyashita Atsushi、Sekimizu Kazuhisa、Kaito Chikara
    • Journal Title

      Drug Discoveries & Therapeutics

      Volume: 16 Issue: 5 Pages: 204-209

    • DOI

      10.5582/ddt.2022.01058

    • ISSN
      1881-7831, 1881-784X
    • Year and Date
      2022-10-31
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lysocin E Targeting Menaquinone in the Membrane of Mycobacterium tuberculosis Is a Promising Lead Compound for Antituberculosis Drugs2022

    • Author(s)
      Geberetsadik G, Inaizumi A, Nishiyama A, Yamaguchi T, Hamamoto H, Panthee S, Tamaru A, Hayatsu M, Mizutani Y, Kaboso SA, Hakamata M, Ilinov A, Ozeki Y, Tateishi Y, Sekimizu K, Matsumoto S.
    • Journal Title

      Antimicrob Agents Chemother

      Volume: 66 Issue: 9

    • DOI

      10.1128/aac.00171-22

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Peanut triacylglycerols activate innate immunity both in insects and mammals2022

    • Author(s)
      Li Wenyuan、Miyashita Atsushi、Sekimizu Kazuhisa
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 7464-7464

    • DOI

      10.1038/s41598-022-11494-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Evaluation of the efficacy of foods and medicines using silkworms as experimental animals2024

    • Author(s)
      関水 和久
    • Organizer
      BCSIR Congress-2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] LPS、ペプチドグルカン及びβグルカンによるカイコのサイトカインストーム誘導2023

    • Author(s)
      関水 和久
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] カイコを用いた敗血症性サイトカインストーム機構モデルの構築2023

    • Author(s)
      関水 和久
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] カイコを用いた敗血症性DIC (播種性血管内凝固症候群)モデルの構築2023

    • Author(s)
      関水 和久、宮下 惇嗣、李 文渊、三上 雄大、Yu Yidong、浜本 洋
    • Organizer
      日本薬学会
    • Related Report
      2022 Annual Research Report
  • [Book] 動物実験代替法とNew Approach Methodologiesの開発・利用動向「カイコを用いた、ブロッコリー中性多糖類の自然免疫促進活性の評価」2023

    • Author(s)
      関水和久、宮下惇嗣、三上雄大
    • Total Pages
      296
    • Publisher
      シーエムシー出版
    • ISBN
      9784781317472
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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