2020 Fiscal Year Final Research Report
Regulation of primary lymphangiogenesis through Angiopoietin/Tie
Project/Area Number |
19K16499
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 48020:Physiology-related
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Research Institution | National Cardiovascular Center Research Institute |
Principal Investigator |
Morooka Nanami 国立研究開発法人国立循環器病研究センター, 研究所, 流動研究員 (40817110)
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Project Period (FY) |
2019-04-01 – 2021-03-31
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Keywords | リンパ管 / Angiopoietin/Tie / 血管 |
Outline of Final Research Achievements |
By analyzing zebrafish mutants, we found that the receptor tyrosine kinase Tie1 is important for the primary lymphangiogenesis, especially for the lymphatic differentiation, proliferation, and migration of venous endothelial cells. Live imaging analysis showed that Tie1 is essential not only for forming protrusions of an endothelial cell but also for motility of an entire cell, including cell nucleus, towards the migration direction. In vitro analysis suggest that zebrafish Tie1 is activated by Angiopoietin1. Furthermore, we clarified novel factors for lymphangiogenesis and migration controlled under Angiopoietin/Tie signaling.
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Free Research Field |
血管・リンパ管生物学
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Academic Significance and Societal Importance of the Research Achievements |
発生期において機能的なリンパ管が形成されるためには、複数のシグナル経路によって内皮細胞の応答が調節されることで、形態形成が精密に制御される必要がある。本研究では新たに、初期リンパ管新生におけるAngiopoietin/Tieシグナル特有の細胞応答や、その下流で制御される新たな因子についても明らかにすることができ、リンパ形成機構についての新たな知見を得ることができた。また、この知見は発生期だけでなく、成体や病的環境におけるリンパ管形成・維持にも応用が期待できる。
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