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Elucidation of the mutualistic relationship between host and gut microbiota mediated by mucin and its application

Research Project

Project/Area Number 20H02929
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionShizuoka University

Principal Investigator

MORITA Tatsuya  静岡大学, 農学部, 教授 (90332692)

Co-Investigator(Kenkyū-buntansha) 日野 真吾  静岡大学, 農学部, 准教授 (70547025)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2022: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywordsムチン / 腸内細菌叢 / 短鎖脂肪酸 / 腸内細菌 / 相利共生 / 腸管バリア
Outline of Research at the Start

腸杯細胞が産生・分泌するムチンは,粘液バリア層を形成すると同時に, 大腸では腸内細菌の発酵基質となる。一方で,腸内細菌の主要な発酵代謝産物である短鎖脂肪酸(SCFA)は, 大腸上皮細胞のエネルギー基質となるほか, 宿主の免疫系・代謝系・神経系に作用することで全身の恒常性維持に寄与することが示唆されている。本課題では,「宿主はムチンを腸内細菌に供給することで増殖・代謝を促し,一方,腸内細菌はSCFAを供給することで宿主の恒常性維持に寄与する」というムチンを介した宿主―腸内細菌の相利共生関係を明らかにするとともに,新規プレバイオティクスとしてのムチンの有効性を検証することを目的とする。

Outline of Final Research Achievements

Mucin produced and secreted by goblet cells in the gut is a barrier that forms the mucus layer and also serves as a fermentation substrate for microbiota in the colon. On the other hand, short-chain fatty acids (SCFA), the major fermentation metabolite of microbiota, have been suggested to contribute to the immune, metabolic, and nervous systems of the host homeostasis, in addition to serving as an energy substrate for colonic epithelial cells. In this project, we have demonstrated that mucin and its constituent sugars are endogenous fermentation substrates for microbiota and induce regulatory T cells via SCFA. We also suggested the possibility of ray body surface mucin as a novel prebiotic candidate.

Academic Significance and Societal Importance of the Research Achievements

本課題では,ムチンおよびその構成糖が内因性発酵基質として腸内細菌に資化されること,その発酵産物であるSCFAを介して制御性T細胞を誘導することを明らかにした。このことは,宿主と腸内細菌が共生関係を築き,維持する機序の一端を明らかにするものであり,腸管の恒常性維持機構の基本的理解に寄与すると考えている。また,ムチンのプレバイオティクスとしての利用可能性について検証し,食事として摂取したエイ体表ムチンがSCFAを増加させること,Akkermansia muciniphilaを特異的に増加させることを明らかにした。

Report

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

    (5 results)

All 2022 2020

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

  • [Journal Article] Oral Intake of Slowly Digestible α-Glucan Such as Resistant Maltodextrin Leads to Increased Secretion of Glucagon-Like Peptide-2 in Rats and Helps Thicken Their Ileal Mucosae2022

    • Author(s)
      GOTO Tomoya、UMEDA Tomoki、HINO Shingo、MORITA Tatsuya、NISHIMURA Naomichi
    • Journal Title

      Journal of Nutritional Science and Vitaminology

      Volume: 68 Issue: 2 Pages: 104-111

    • DOI

      10.3177/jnsv.68.104

    • ISSN
      0301-4800, 1881-7742
    • Year and Date
      2022-04-30
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Local free fatty acids trigger the expression of lipopolysaccharide-binding protein in murine white adipose tissue2022

    • Author(s)
      SEKI Manami、MIWA Akiho、OHSAKA Fumina、KARATSU Yugo、TSURUTA Takeshi、HINO Shingo、MORITA Tatsuya、SONOYAMA Kei
    • Journal Title

      Bioscience of Microbiota, Food and Health

      Volume: 41 Issue: 2 Pages: 54-65

    • DOI

      10.12938/bmfh.2021-061

    • NAID

      130008145462

    • ISSN
      2186-3342
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Skate-skin mucin, rich in sulfated sugars and threonine, promotes proliferation of <i>Akkermansia muciniphila</i> in feeding tests in rats and in vitro fermentation using human feces2022

    • Author(s)
      Miyata Takaaki、Mizushima Takayasu、Miyamoto Nobuyuki、Yamada Takahiro、Hase Koji、Fukushima Michihiro、Nishimura Naomichi、Hino Shingo、Morita Tatsuya
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 86 Issue: 3 Pages: 397-406

    • DOI

      10.1093/bbb/zbac003

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hairy Region Concentrate of Pectin Strongly Stimulates Mucin Secretion in HT29-MTX Cells, but to a Lessor Degree in Rat Small Intestine2020

    • Author(s)
      HINO Shingo、NISHIMURA Naomichi、MORITA Tatsuya
    • Journal Title

      Journal of Nutritional Science and Vitaminology

      Volume: 66 Issue: 4 Pages: 331-338

    • DOI

      10.3177/jnsv.66.331

    • NAID

      130007893250

    • ISSN
      0301-4800, 1881-7742
    • Year and Date
      2020-08-31
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mucin-Derived O-Glycans Act as Endogenous Fiber and Sustain Mucosal Immune Homeostasis via Short-Chain Fatty Acid Production in Rat Cecum2020

    • Author(s)
      Hino S, Mizushima T, Kaneko K, Kawai E, Kondo T, Genda T, Yamada T, Hase K, Nishimura N, Morita T
    • Journal Title

      Journal of Nutrition

      Volume: 150 Issue: 10 Pages: 2656-2665

    • DOI

      10.1093/jn/nxaa097

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed

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

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