2022 Fiscal Year Final Research Report
Mechanisms of neointima formation in pulmonary hypertension: an approach using pulmonary transcriptome analysis.
Project/Area Number |
20K08565
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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 | Mie University |
Principal Investigator |
Yodoya Noriko 三重大学, 医学部附属病院, 助教 (40525367)
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Co-Investigator(Kenkyū-buntansha) |
丸山 一男 鈴鹿医療科学大学, 保健衛生学部, 教授 (20181828)
西村 有平 三重大学, 医学系研究科, 教授 (30303720)
澤田 博文 三重大学, 医学系研究科, 講師 (30362354)
三谷 義英 三重大学, 医学部附属病院, 准教授 (60273380)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 肺高血圧 / トランスクリプトーム / 創薬 |
Outline of Final Research Achievements |
In this study, we attempted to identify target genes by comparative analysis of transcriptomes in the lungs of rat PAH models with different vascular lesions. From the analysis, differentially expressed genes (DEGs) were selected, and a weighted gene network analysis of co-expressed genes in commonly altered DEGs was performed to identify candidate target genes related to neointima formation in pulmonary hypertension. As a result, cell adhesion molecule A and inflammation-related molecule B were identified. Inflammation-related molecule B-deficient rats were generated and phenotypically analyzed. Molecule B knockout rats showed reduced survival and severe pulmonary vascular lesions in monocrotaline-induced rats. Molecule B was shown to be important in maintaining the proliferative and differentiation state of vascular smooth muscle.
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Free Research Field |
小児循環器学、肺循環、新生児学
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Academic Significance and Societal Importance of the Research Achievements |
肺動脈性肺高血圧(PAH)は、予後不良の難治性の病態であり、近年のプロスタサイクリン系、エンドセリンレセプター拮抗薬、ホスホジエステラーゼ5型阻害薬などの治療薬の開発により予後の改善が認められるが、これら薬剤の血管病変退縮効果は示されておらず、生涯にわたり治療を継続する必要があり、医療経済的な負担も大きな課題である。PAHの閉塞性血管病変の退縮に至る新たな機序に基づく治療の開発へ繋がる成果であり、将来的に、本疾患を罹患する患者さんへの大きな利益となると考えられる。
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