Influenza virus adaptation PB2-627K modulates nucleocapsid inhibition by the pathogen sensor RIG-I.
Influenza virus adaptation PB2-627K modulates nucleocapsid inhibition by the pathogen sensor RIG-I.
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DOI:
10.1016/j.chom.2015.01.005
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发表时间:
2015-03-11
影响因子:
30.3
通讯作者:
Weber F
中科院分区:
文献类型:
--
作者:
Weber M;Sediri H;Felgenhauer U;Binzen I;Bänfer S;Jacob R;Brunotte L;García-Sastre A;Schmid-Burgk JL;Schmidt T;Hornung V;Kochs G;Schwemmle M;Klenk HD;Weber F
The cytoplasmic RNA helicase RIG-I mediates innate sensing of RNA viruses. The genomes of influenza A virus (FLUAV) are encapsidated by the nucleoprotein and associated with RNA polymerase, posing potential barriers to RIG-I sensing. We show that RIG-I recognizes the 5’-triphosphorylated dsRNA on FLUAV nucleocapsids but that polymorphisms at position 627 of the viral polymerase subunit PB2 modulate RIG-I sensing. Compared to mammalian-adapted PB2-627K, avian FLUAV nucleocapsids possessing PB2-627E are prone to increased RIG-I recognition, and RIG-I-deficiency partially restores PB2-627E virus infection of mammalian cells. Heightened RIG-I sensing of PB2-627E nucleocapsids correlates with previously established lower affinity of 627E-containing PB2 for nucleoprotein and is increased by further nucleocapsid instability. The effect of RIG-I on PB2-627E nucleocapsids is independent of antiviral signaling, suggesting that RIG-I-nucleocapsid binding alone can inhibit infection. These results indicate that RIG-I is a direct avian FLUAV restriction factor and highlight nucleocapsid disruption as an antiviral strategy.
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影响因子:
3.8
作者:
Naffakh, N;Massin, P;van der Werf, S
通讯作者:
van der Werf, S
影响因子:
5.4
作者:
Gack, Michaela U.
通讯作者:
Gack, Michaela U.
影响因子:
5.4
作者:
Massin, P;van der Werf, S;Naffakh, N
通讯作者:
Naffakh, N
DOI:
10.1099/vir.0.031492-0
发表时间:
2011-07
期刊:
The Journal of general virology
影响因子:
--
作者:
Foeglein Á;Loucaides EM;Mura M;Wise HM;Barclay WS;Digard P
通讯作者:
Digard P
DOI:
10.1073/pnas.1005077107
发表时间:
2010-09-14
影响因子:
11.1
作者:
Baum, Alina;Sachidanandam, Ravi;Garcia-Sastre, Adolfo
通讯作者:
Garcia-Sastre, Adolfo