RNA:DNA hybrids are a novel molecular pattern sensed by TLR9.

RNA:DNA hybrids are a novel molecular pattern sensed by TLR9.
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DOI:
10.1002/embj.201386117
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发表时间:
2014-03-18
期刊:
影响因子:
11.4
通讯作者:
Jackson, Andrew P.
Jackson, Andrew P.
中科院分区:
生物学1区
文献类型:
--
作者:
Rigby, Rachel E.;Webb, Lauren M.;Mackenzie, Karen J.;Li, Yue;Leitch, Andrea;Reijns, Martin A. M.;Lundie, Rachel J.;Revuelta, Ailsa;Davidson, Donald J.;Diebold, Sandra;Modis, Yorgo;MacDonald, Andrew S.;Jackson, Andrew P.

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The sensing of nucleic acids by receptors of the innate immune system is a key component of antimicrobial immunity. RNA:DNA hybrids, as essential intracellular replication intermediates generated during infection, could therefore represent a class of previously uncharacterised pathogen-associated molecular patterns sensed by pattern recognition receptors. Here we establish that RNA:DNA hybrids containing viral-derived sequences efficiently induce pro-inflammatory cytokine and antiviral type I interferon production in dendritic cells. We demonstrate that MyD88-dependent signalling is essential for this cytokine response and identify TLR9 as a specific sensor of RNA:DNA hybrids. Hybrids therefore represent a novel molecular pattern sensed by the innate immune system and so could play an important role in host response to viruses and the pathogenesis of autoimmune disease.
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