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2021 Fiscal Year Final Research Report

Elucidating pathophysiology of pemphigus by single cell analysis of auto-reactive B cells

Research Project

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Project/Area Number 19H03683
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 53050:Dermatology-related
Research InstitutionTokyo Women's Medical University (2021)
Keio University (2019-2020)

Principal Investigator

Yamagami Jun  東京女子医科大学, 医学部, 准教授 (80327618)

Co-Investigator(Kenkyū-buntansha) 高橋 勇人  慶應義塾大学, 医学部(信濃町), 講師 (40398615)
渡辺 貴志  国立研究開発法人理化学研究所, 生命医科学研究センター, 技師 (50406815)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords天疱瘡 / 自己反応性B細胞
Outline of Final Research Achievements

Pemphigus is an autoimmune disease that causes blistering of the skin and mucous membranes due to autoantibodies against desmoglein (Dsg), an adhesion molecule between keratinocytes in the skin. In this study, Dsg-specific B cells, which play a major role in pemphigus, were isolated from patients at the single-cell level to elucidate the pathogenesis of the disease by examining their structural and immunological characteristics, leading to the development of disease-specific therapies. The results showed that Dsg-specific B cells have elevated expression of genes related to inflammation, B cell differentiation, and interaction with T cells.

Free Research Field

皮膚科

Academic Significance and Societal Importance of the Research Achievements

この研究を通じて、天疱瘡の病態において重要なDsg特異的B細胞の特徴について重要な知見が得られた。今後さらに検証を重ねることで、病勢を鋭敏に反映できる改良された検査系、有害な自己抗体産生機序を標的とした新たな治療法の開発などにつながることが期待される。
また最新の技術を駆使して、自己免疫疾患患者から抗原特異的B細胞を単一細胞レベルで分離し、その特徴を検討することによって病態解明を進めることができる、という新たな研究手法の可能性を示すことができた。

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Published: 2023-01-30  

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