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Gut Microbiota and Colonization Resistance against Bacterial Enteric Infection

Research Project

Project/Area Number 17K10036
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Infectious disease medicine
Research InstitutionSt. Marianna University School of Medicine

Principal Investigator

Kunishima Hiroyuki  聖マリアンナ医科大学, 医学部, 教授 (60339843)

Co-Investigator(Kenkyū-buntansha) 大岡 正道  聖マリアンナ医科大学, 医学部, 准教授 (30367370)
遠藤 史郎  東北大学, 医学系研究科, 客員教授 (40614491)
竹村 弘  聖マリアンナ医科大学, 医学部, 教授 (80301597)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsMicrobiota 薬剤耐性 / プロバイオティクス / 薬剤耐性菌 / 腸内細菌 / フローラ / 感染症
Outline of Final Research Achievements

Currently, various infection control measures are being taken at healthcare settings. However, MRSA, ESBLs, Clostridioides difficile, and carbapenemase-producing enterobacteria (CRE) have been observed.
The gut microbiome is critical in providing resistance against colonization by exogenous microorganisms. These are microorganisms that can carry bacteria in the intestinal tract, and it is difficult to evaluate and eradicate them by conventional bacterial culture. It is becoming clear that the human Microbiome is closely associated with healthy life expectancy by genome analysis. In this study, we searched for drug-resistant bacterial control in gut microbiota at the genomic level and evaluated its inhibitory effect on pathogenic microorganisms.

Academic Significance and Societal Importance of the Research Achievements

従来の薬剤耐性菌に関する研究では、臨床分離株の耐性遺伝子を探索することや、感染制御においては手指衛生など交差感染対策の遵守が強調されて行われてきたものの、依然として薬剤耐性菌の発生と伝播がみられ、我々ヒトが感染症についてコントロールしているとは言い難い。プロバイオティクス製剤と薬剤耐性菌に関して我が国における知見はなく、本研究課題に着目した研究は世界的にもない。本検討は我が国が薬剤耐性菌分野において強固な知的基盤を有するとともに、世界に先立ち薬剤耐性菌対策に関して、大きく寄与することも期待される。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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