2023 Fiscal Year Final Research Report
Clarification of mechanism for delta virus replication
Project/Area Number |
21K15453
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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 49060:Virology-related
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Research Institution | Nagoya University |
Principal Investigator |
Iwamoto Masashi 名古屋大学, 理学研究科, 招へい教員 (40825882)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | HDV / デルタウイルス |
Outline of Final Research Achievements |
Machinery for entry and replication of deltavirus (DeV) into the host cells have been largely unknown. We recently reported novel deltaviruses, which can replicate in some of the cell lines including human-derived cells. Here, we identified the interferon-stimulated gene (ISG) and its family can inhibit replication of deltaviruses. Helper factors involved in the formation of infectious particles of the newly identified deltaviruses were unknown. In this study, we revealed that genes expressed in avian-derived cell lines are necessary for the formation of infectious particles of the Taeniopygia guttata deltavirus. These findings are expected to be crucial for understanding the infection molecular mechanism of the deltavirus and for developing a strategy for defense against it.
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Free Research Field |
ウイルス学
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Academic Significance and Societal Importance of the Research Achievements |
ウイルスは通常感染した宿主の一部を利用して増殖するが、デルタウイルスはそれに加えて他のウイルスを自身の感染複製に利用するユニークな生存戦略を持つ。しかし、デルタウイルス間で利用するウイルスを共通しておらず、これはそれぞれのデルタウイルスが進化の過程で最適なヘルパーとなるウイルス/因子を選択して進化した可能性を示す。また、近年報告された新規デルタウイルスがヒトに感染するという報告はまだ無いが、ヒト由来の培養細胞株で複製増殖能を示すことより、将来的にヒトに伝播しパンデミックを引き起こす可能性は否定できない。本研究の知見が新型デルタウイルスがヒトに伝播した際の防御戦略を確立する一助となると期待する。
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