Short-range exosomal transfer of viral RNA from infected cells to plasmacytoid dendritic cells triggers innate immunity.
Short-range exosomal transfer of viral RNA from infected cells to plasmacytoid dendritic cells triggers innate immunity.
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DOI:
10.1016/j.chom.2012.08.010
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发表时间:
2012-10-18
影响因子:
30.3
通讯作者:
Chisari FV
中科院分区:
文献类型:
--
作者:
Dreux M;Garaigorta U;Boyd B;Décembre E;Chung J;Whitten-Bauer C;Wieland S;Chisari FV
Viral nucleic acids often trigger an innate immune response in infected cells. Many viruses, including hepatitis C virus (HCV), have evolved mechanisms to evade intracellular recognition. Nevertheless, HCV-permissive cells can trigger a viral RNA-, TLR7- and cell contact-dependent compensatory interferon response in nonpermissive plasmacytoid dendritic cells (pDCs). Here we report that these events are mediated by transfer of HCV RNA-containing exosomes from infected cells to pDCs. The exosomal viral RNA transfer is dependent on the endosomal sorting complex (ESCRT) machinery and on Annexin A2, an RNA-binding protein involved in membrane vesicle trafficking, and it is suppressed by exosome release inhibitors. Further, purified concentrated HCV RNA-containing exosomes are sufficient to activate pDCs. Thus, vesicular sequestration and exosomal export of viral RNA may serve both as a viral strategy to evade pathogen-sensing within infected cells and as a host strategy to induce an unopposed innate response in replication-nonpermissive by-stander cells.
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DOI:
10.1038/nrm2937
发表时间:
2010-08
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
15.3
作者:
Decalf, Jeremie;Fernandes, Sandrine;Longman, Randy;Ahloulay, Mina;Audat, Francoise;Lefrerre, Francois;Rice, Charles M.;Pol, Stanislas;Albert, Matthew L.
通讯作者:
Albert, Matthew L.
影响因子:
3.7
作者:
Ariumi Y;Kuroki M;Maki M;Ikeda M;Dansako H;Wakita T;Kato N
通讯作者:
Kato N
影响因子:
5.4
作者:
Bigger, CB;Guerra, B;Lanford, RE
通讯作者:
Lanford, RE
影响因子:
3.8
作者:
El-Hage, N;Luo, GX
通讯作者:
Luo, GX