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Identification of a novel receptor which recognizes mushroom beta-1,6-glucan

Research Project

Project/Area Number 19K06166
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 40020:Wood science-related
Research InstitutionUtsunomiya University

Principal Investigator

Konno Naotake  宇都宮大学, 農学部, 准教授 (60549880)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsβ-グルカン / きのこ / 糖質関連酵素 / 免疫賦活 / 多糖 / 機能性食品 / βーグルカン / βグルカン
Outline of Research at the Start

きのこ類の細胞壁多糖は人体において生理活性機能を示すことが知られている。申請者は、真菌類に特有の多糖分子である「β-1,6-グルカン」の免疫活性化機能を見出し糖鎖の酵素合成も可能にしてきた。本課題では、生体内におけるβ-1,6-グルカン認識機構を明らかにすることを目的とし、β-1,6-グルカン受容体タンパク質を同定する。

Outline of Final Research Achievements

β-1,6-Glucan, a cell wall component of fungi, is known as a bioactive (immunostimulation) polysaccharide. In this study, the cDNAs encoding β-1,6-glucan degrading enzymes (β-1,6-glucanases) were cloned from basidiomycetes, and the β-1,6-glucanase from Coprinopsis cinerea (Cc30) was heterologously expressed in Aspergillus oryzae. Cc30 catalyzed depolymerization of β-1,6-glucan endolytically, and was highly specific toward β-1,6-glucan polysaccharide. Lichen Umbilicaria species produce linear glucan composed of only β-1,6-linkages. We prepared β-1,6-glucan oligosaccharides from the hot-water extracts of Umbilicaria esculenta using the obtained β-1,6-glucanase. Antitumor activities of β-1,6-glucan oligosaccharides were analyzed by expression of inflammatory cytokine genes (TNF-α and IL-6) in mouse macrophage-like cell line RAW264.7 cells. High-purity β-1,6-glucan oligosaccharides of over pentasaccharides were suggested to have immunostimulatory properties.

Academic Significance and Societal Importance of the Research Achievements

β-1,6-グルカンの生理機能に関する知見は、きのこ類に新しい価値を見出すことにつながる。きのこ類は木質バイオマスを基材として生産できる唯一の食品で、健康補助食品や医薬品としての可能性も持つ。食用きのこの大量栽培が可能になってきた一方で、近年は消費量は伸び悩んでいる。きのこ類には生体内において生理機能を示す多糖類が存在することから、これらの機能性を活用すれば、きのこ市場の拡大と、理想的な木材のカスケード利用システムの構築が期待できる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (9 results) (of which Invited: 3 results)

  • [Journal Article] Extracellular enzymes secreted in the mycelial block of Lentinula edodes during hyphal growth2023

    • Author(s)
      Kobayashi Nanae、Wada Nagisa、Yokoyama Haruna、Tanaka Yuki、Suzuki Tomohiro、Habu Naoto、Konno Naotake
    • Journal Title

      AMB Express

      Volume: 13 Issue: 1 Pages: 36-36

    • DOI

      10.1186/s13568-023-01547-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pectin decomposition at the early stage of brown-rot decay by <i>Fomitopsis palustris</i>2023

    • Author(s)
      Tanaka Yuki、Nezu Ikumi、Aiso Haruna、Fujie Tomomi、Konno Naotake、Suzuki Tomohiro、Ishiguri Futoshi、Habu Naoto
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 87 Issue: 5 Pages: 555-562

    • DOI

      10.1093/bbb/zbad014

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Screening of a Lentinula edodes Mutant That Retains Lentinan Contents Long after Being Harvested Using TILLING2021

    • Author(s)
      Sakamoto Yuichi、Sato Shiho、Nakade Keiko、Ito Miyuki、Yamauchi Takahiro、Eda Katsumasa、Goto Fumikazu、Mizuno Masashi、Konno Naotake
    • Journal Title

      ACS Agricultural Science & Technology

      Volume: - Issue: 3 Pages: 143-149

    • DOI

      10.1021/acsagscitech.0c00023

    • Related Report
      2020 Research-status Report
  • [Journal Article] Non-destructive analysis of the moisture content in shiitake mushrooms (Lentinula edodes) using near-infrared imaging at 1450?nm2020

    • Author(s)
      Shinoda Kazuma、Konno Naotake、Suzuki Tomohiro
    • Journal Title

      Mycoscience

      Volume: 61 Issue: 5 Pages: 235-239

    • DOI

      10.1016/j.myc.2020.04.005

    • NAID

      40022362994

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Starch-degrading enzymes from the brown-rot fungus Fomitopsis palustris2020

    • Author(s)
      Tanaka Yuki、Konno Naotake、Suzuki Tomohiro、Habu Naoto
    • Journal Title

      Protein Expression and Purification

      Volume: 170 Pages: 105609-105609

    • DOI

      10.1016/j.pep.2020.105609

    • Related Report
      2020 Research-status Report
  • [Presentation] シイタケ菌床における菌糸部位ごとの菌体外酵素活性2023

    • Author(s)
      金野尚武、小林菜々恵、田中裕基、鈴木智大、羽生直人
    • Organizer
      日本応用糖質科学会2023年度大会(第72回)
    • Related Report
      2023 Annual Research Report
  • [Presentation] きのこ由来のキチン分解酵素2022

    • Author(s)
      金野尚武、坂本裕一
    • Organizer
      第36 回日本キチン・キトサン学会大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 真菌類由来β-1,6-グルカンを活用した機能性素材開発2022

    • Author(s)
      横山陽奈、金野尚武、羽生直人
    • Organizer
      日本きのこ学会第25回大会
    • Related Report
      2022 Research-status Report
  • [Presentation] シイタケ菌床における菌糸の成熟度での分泌酵素の違い2022

    • Author(s)
      小林菜々恵、金野尚武、羽生直人
    • Organizer
      日本きのこ学会第25回大会
    • Related Report
      2022 Research-status Report
  • [Presentation] きのこ由来成分を活用した機能性β-1,6-グルカンオリゴ糖の調製2022

    • Author(s)
      横山陽奈、金野尚武、羽生直人
    • Organizer
      第72回 日本木材学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] シイタケ菌糸体による各種バイオマス素材分解能の解析,2022

    • Author(s)
      木村栄美、金野尚武、羽生直人
    • Organizer
      第4回高分子学会関東支部北関東地区講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] シイタケが生産する多糖類分解酵素群の生化学的解析とその応用2022

    • Author(s)
      金野尚武
    • Organizer
      日本きのこ学会第24回大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] シイタケ菌床栽培において菌糸蔓延時に分泌される酵素群の解析2022

    • Author(s)
      小林菜々恵、和田凪左、金野尚武、羽生直人
    • Organizer
      第72回 日本木材学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 水環境下における多糖類の酵素分解2020

    • Author(s)
      金野尚武
    • Organizer
      第69回高分子討論会
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2019-04-18   Modified: 2025-01-30  

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