Migration of Influenza Virus Nucleoprotein into the Nucleolus Is Essential for Ribonucleoprotein Complex Formation
Migration of Influenza Virus Nucleoprotein into the Nucleolus Is Essential for Ribonucleoprotein Complex Formation
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DOI:
10.1128/mbio.03315-21
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发表时间:
2022-01-04
期刊:
影响因子:
6.4
通讯作者:
Noda T
中科院分区:
文献类型:
--
作者:
Miyamoto S;Nakano M;Morikawa T;Hirabayashi A;Tamura R;Fujita-Fujiharu Y;Hirose N;Muramoto Y;Noda T
Influenza A virus double-helical ribonucleoprotein complex (RNP) performs transcription and replication of viral genomic RNA (vRNA). Although RNP formation occurs in the nuclei of virus-infected cells, the nuclear domains involved in this process remain unclear. Here, we show that the nucleolus is an essential site for functional RNP formation. Viral nucleoprotein (NP), a major RNP component, temporarily localized to the nucleoli of virus-infected cells. Mutations in a nucleolar localization signal (NoLS) on NP abolished double-helical RNP formation, resulting in a loss of viral RNA synthesis ability, whereas ectopic fusion of the NoLS enabled the NP mutant to form functional double-helical RNPs. Furthermore, nucleolar disruption of virus-infected cells inhibited NP assembly into double-helical RNPs, resulting in decreased viral RNA synthesis. Collectively, our findings demonstrate that NP migration into the nucleolus is a critical step for functional RNP formation, showing the importance of the nucleolus in the influenza virus life cycle.
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影响因子:
6.7
作者:
Jorba N;Coloma R;Ortín J
通讯作者:
Ortín J
影响因子:
5.9
作者:
Nakano M;Sugita Y;Kodera N;Miyamoto S;Muramoto Y;Wolf M;Noda T
通讯作者:
Noda T
影响因子:
3.4
作者:
Chamousset, Delphine;Mamane, Sarah;Trinkle-Mulcahy, Laura
通讯作者:
Trinkle-Mulcahy, Laura
影响因子:
3.7
作者:
Goic, Bertsy;Bustamante, Juanita;Burzio, Luis O.
通讯作者:
Burzio, Luis O.
影响因子:
5.4
作者:
COMPANS, RW;CONTENT, J;DUESBERG, PH
通讯作者:
DUESBERG, PH