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2023 Fiscal Year Final Research Report

The mechanism of Immune checkpoint inhibitor related colitis

Research Project

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Project/Area Number 21K16010
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Mutaguchi Makoto  慶應義塾大学, 医学部(信濃町), 共同研究員 (90868473)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywords免疫チェックポイント / 大腸炎
Outline of Final Research Achievements

In recent years, the number of patients with immune checkpoint inhibitor (ICI) related adverse events (IrAE) has been increasing in proportion to the increase in the number of patients using ICI. To elucidate the pathogenesis of IrAE colitis, we analyzed the intestinal bacteria and immune cell profiles in IrAE colitis in detail. Akkermansia muciniphila was decreased before and after treatment, and T-cell repertoire converged after treatment.

Free Research Field

内視鏡学

Academic Significance and Societal Importance of the Research Achievements

これまでIrAE大腸炎については詳細に検討されてこなかった。しかし今回の検討でAkkermansia muciniphilaが発症前に多く、ステロイドなどによる治療後に減少することが判明した。本研究を通じてAkkermansia muciniphilaの増減が周辺環境により起きること、さらに炎症と同様にTCRの多様性も治療前後で変化することは今後の免疫チェックポイント阻害剤の利用によるIrAE大腸炎の発症を減らす意味でも重要である。

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Published: 2025-01-30  

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