Dynamic oscillation of translation and stress granule formation mark the cellular response to virus infection.
Dynamic oscillation of translation and stress granule formation mark the cellular response to virus infection.
复制标题
翻译和应力颗粒形成的动态振荡标志着细胞对病毒感染的反应。
DOI:
10.1016/j.chom.2012.05.013
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发表时间:
2012-07-19
影响因子:
30.3
通讯作者:
Bartenschlager R
中科院分区:
文献类型:
--
作者:
Ruggieri A;Dazert E;Metz P;Hofmann S;Bergeest JP;Mazur J;Bankhead P;Hiet MS;Kallis S;Alvisi G;Samuel CE;Lohmann V;Kaderali L;Rohr K;Frese M;Stoecklin G;Bartenschlager R
Virus infection-induced global protein synthesis suppression is linked to assembly of stress granules (SGs), cytosolic aggregates of stalled translation preinitiation complexes. To study long-term stress responses, we developed an imaging approach for extended observation and analysis of SG dynamics during persistent hepatitis C virus (HCV) infection. In combination with type 1 interferon, HCV infection induces highly dynamic assembly/disassembly of cytoplasmic SGs, concomitant with phases of active and stalled translation, delayed cell division, and prolonged cell survival. Double-stranded RNA (dsRNA), independent of viral replication, is sufficient to trigger these oscillations. Translation initiation factor eIF2α phosphorylation by protein kinase R mediates SG formation and translation arrest. This is antagonized by the upregulation of GADD34, the regulatory subunit of protein phosphatase 1 dephosphorylating eIF2α. Stress response oscillation is a general mechanism to prevent long-lasting translation repression and a conserved host cell reaction to multiple RNA viruses, which HCV may exploit to establish persistence.
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影响因子:
46.9
作者:
通讯作者:
--
影响因子:
3.7
作者:
Keskinen, P;Nyqvist, M;Julkunen, I
通讯作者:
Julkunen, I
DOI:
10.1073/pnas.0703348104
发表时间:
2007-05-22
影响因子:
11.1
作者:
Emara, Mohamed M.;Brinton, Margo A.
通讯作者:
Brinton, Margo A.
影响因子:
3.3
作者:
McInerney, GM;Kedersha, NL;Liljeström, P
通讯作者:
Liljeström, P
影响因子:
5.3
作者:
Kim, WJ;Back, SH;Jang, SK
通讯作者:
Jang, SK