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3D intestinal development and carcinogenesis by Hippo-YAP pathway

Research Project

Project/Area Number 19K08424
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionYamaguchi University

Principal Investigator

MUTSUNORI SHIRAI  山口大学, 大学院医学系研究科, 教授 (20196596)

Co-Investigator(Kenkyū-buntansha) 浅岡 洋一  山口大学, 大学院医学系研究科, 講師 (10436644)
清木 誠  山口大学, 大学院医学系研究科, 教授 (50226619)
柴田 健輔  山口大学, 大学院医学系研究科, 講師 (50529972)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
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)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsYAP / Hippo / MAIT cell / Francisella tularensis / ribD / Hippo経路 / MST1/2 / MHC / サルモネラ / IL-8 / 感染免疫 / IL8 / 感染 / サイトカイン / 腸炎
Outline of Research at the Start

転写共役因子YAPは炎症性腸炎や発癌の分子機構を制御し、有力な治療標的分子である。本研究では、ゲノム編集技術による各種遺伝子欠失細胞、ヒト腸オルガノイドなどの感染モデルでのサイトカイン産生、菌増殖・排除、抗原認識等の宿主―病原体相互作用と制御におけるYAPの役割、Hippo-YAPシグナル伝達経路による分子基盤ネットワークを解明し、腸炎、炎症病態さらには発がんの解明に繋げる。

Outline of Final Research Achievements

Pathogenic roles of the altered metabolic programs against host immunity are poorly understood. Here, we show that a pathogenic strain Francisella tularensis subsp. tularensis (FT) has five amino acid substitutions of ribD in the riboflavin (RF) synthetic pathway; ribD is a converting enzyme responsible for generating metabolites recognized by mucosal associated invariant T (MAIT) cells. Metabolites from a free-living strain Francisella tularensis subsp. novicida (FN) activated MAIT cells in a T cell receptor (TCR)-dependent manner, whereas introduction of FT-type ribD to the free-living strain FN attenuated the activity in both humans and mice. Intranasal infection mouse model showed that the FT-type ribD-expressing FN impaired Th1-type MAIT cell expansion and bacterial clearance resulting in shortened survival compared to the free-living strain FN. These results demonstrate that Francisella tularensis acquires pathogenicity by alteration of metabolic programs during evolution.

Academic Significance and Societal Importance of the Research Achievements

ヒト難治性疾患の病態解明と治療戦略の開拓を目指して研究を進めることができた。また、長年にわたり難病として未解明であった野兎病菌感染症において野兎病菌が宿主の免疫を逃れる機構として代謝のリプロラミングが寄与していることが判明し、難治性感染症の解明に貢献できた。

Report

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

    (4 results)

All 2022 2020 2019

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

  • [Journal Article] An intracellular pathogen Francisella tularensis escapes from host immunity by metabolic reprogramming.2022

    • Author(s)
      Kensuke Shibata, Takashi Shimizu, Mashio Nakahara, Francois Legoux,Sho Yamasaki, Makoto Furutani-Seiki, Olivier Lantz, Masahisa Watarai, Mutsunori Shirai
    • Journal Title

      Journal of Experimental Medicine

      Volume: 印刷中

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Agonistic or antagonistic mucosal-associated invariant T (MAIT) cell activity is determined by the 6-alkylamino substituent on uracil MR1 ligands.2020

    • Author(s)
      Braganza CD1, Motozono C2, Sonoda KH3, Yamasaki S4, Shibata K5, Timmer MSM1, Stocker BL
    • Journal Title

      Chem Commun (Camb).

      Volume: in press

    • Related Report
      2019 Research-status Report
  • [Journal Article] In Staphylococcus aureus, the Particulate State of the Cell Envelope Is Required for the Efficient Induction of Host Defense Responses.2019

    • Author(s)
      Kim B, Jiang T, Bae JH, Yun HS, Jang SH, Kim JH, Kim JD, Hur JH, Shibata K, Kurokawa K, Jung Y, Peschel A, Bae T, Lee BL.
    • Journal Title

      Infect Immun. 87(12). pii: e00674-19, 2019.

      Volume: 87 Issue: 12

    • DOI

      10.1128/iai.00674-19

    • Related Report
      2019 Research-status Report
  • [Journal Article] The effect of MR1 ligand glycol-analogues on mucosal-associated invariant T (MAIT) cell activation.2019

    • Author(s)
      Braganza, CD., Shibata, K., Fujiwara, A., Motozono, C., Sonoda, KH., Yamasaki, S., Stocker, BL., Timmer, MSM.
    • Journal Title

      Org Biomol Chem.

      Volume: 17 Issue: 40 Pages: 8992-9000

    • DOI

      10.1039/c9ob01436e

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research

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

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