Innate immune response to Streptococcus pyogenes depends on the combined activation of TLR13 and TLR2.
Innate immune response to Streptococcus pyogenes depends on the combined activation of TLR13 and TLR2.
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对化脓性链球菌的先天免疫反应取决于TLR13和TLR2的联合激活。
DOI:
10.1371/journal.pone.0119727
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Kovarik P
中科院分区:
文献类型:
--
作者:
Fieber C;Janos M;Koestler T;Gratz N;Li XD;Castiglia V;Aberle M;Sauert M;Wegner M;Alexopoulou L;Kirschning CJ;Chen ZJ;von Haeseler A;Kovarik P
Innate immune recognition of the major human-specific Gram-positive pathogen Streptococcus pyogenes is not understood. Here we show that mice employ Toll-like receptor (TLR) 2- and TLR13-mediated recognition of S. pyogenes. These TLR pathways are non-redundant in the in vivo context of animal infection, but are largely redundant in vitro, as only inactivation of both of them abolishes inflammatory cytokine production by macrophages and dendritic cells infected with S. pyogenes. Mechanistically, S. pyogenes is initially recognized in a phagocytosis-independent manner by TLR2 and subsequently by TLR13 upon internalization. We show that the TLR13 response is specifically triggered by S. pyogenes rRNA and that Tlr13 −/− cells respond to S. pyogenes infection solely by engagement of TLR2. TLR13 is absent from humans and, remarkably, we find no equivalent route for S. pyogenes RNA recognition in human macrophages. Phylogenetic analysis reveals that TLR13 occurs in all kingdoms but only in few mammals, including mice and rats, which are naturally resistant against S. pyogenes. Our study establishes that the dissimilar expression of TLR13 in mice and humans has functional consequences for recognition of S. pyogenes in these organisms.
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DOI:
10.1073/pnas.0803815105
发表时间:
2008-10-28
影响因子:
11.1
作者:
Gryllos, Ioannis;Tran-Winkler, Hien J.;Wessels, Michael R.
通讯作者:
Wessels, Michael R.
影响因子:
10.7
作者:
Minh BQ;Nguyen MA;von Haeseler A
通讯作者:
von Haeseler A
影响因子:
7.7
作者:
Lee, Bettina L.;Moon, Joanne E.;Barton, Gregory M.
通讯作者:
Barton, Gregory M.
影响因子:
3
作者:
Koestler T;von Haeseler A;Ebersberger I
通讯作者:
Ebersberger I
影响因子:
4.4
作者:
Hidmark, Asa;von Saint Paul, Antonia;Dalpke, Alexander H.
通讯作者:
Dalpke, Alexander H.