2023 Fiscal Year Final Research Report
Identification of pathogenic effects of IgA in respiratory diseases
Project/Area Number |
20K08526
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 53030:Respiratory medicine-related
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Research Institution | Teikyo University |
Principal Investigator |
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | IgA / レセプター / ANXA2 / サイトカイン / 気管支平滑筋細胞 / 血管内皮細胞 / 気道上皮細胞 |
Outline of Final Research Achievements |
The aim of this study was to determine the pathogenic effects of IgA on respiratory diseases. IgA in bronchoalveolar lavage fluid was elevated in mouse models of asthma and IPF. We found that IgA enhanced cytokine production from airway smooth muscle cells and vascular endothelial cells, and published our findings in an English journal. Using airway epithelial cell lines and immunoprecipitation, we identified a novel IgA receptor, ANXA2, and found that ANXA2 contributed in part to the enhanced cytokine production from airway epithelial cells by IgA, which was published in an English journal. This study suggests that IgA may exert pathogenic effects on respiratory diseases.
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Free Research Field |
呼吸器内科学
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Academic Significance and Societal Importance of the Research Achievements |
本研究を含め、当研究室ではこれまでにIgAが呼吸器構成細胞を活性化することを系統的に明らかにしてきた。これまでIgAの生体保護的な役割には注目されてきたが、病原性役割について明らかにした本研究データの蓄積は世界的にも見当たらず、独自のものである。さらに今回IgAに対する気道上皮細胞上の新たなレセプターを同定し得た。本研究成果から、IgAおよびANXA2が呼吸器疾患の新規治療標的となる可能性が想起され、意義深い研究になったと考えている。
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