Cutting edge: TLR2 is a functional receptor for acute-phase serum amyloid A.
Cutting edge: TLR2 is a functional receptor for acute-phase serum amyloid A.
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尖端:TLR2是急性阶段血清淀粉样蛋白A的功能受体。
DOI:
10.4049/jimmunol.181.1.22
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发表时间:
2008-07-01
期刊:
影响因子:
--
通讯作者:
Ye RD
中科院分区:
文献类型:
--
作者:
Cheng N;He R;Tian J;Ye PP;Ye RD
Induced secretion of acute-phase serum amyloid A (SAA) is a host response to danger signals and clinical indication of inflammation. The biological functions of SAA in inflammation have not been fully defined, although recent reports indicate that SAA induces proinflammatory cytokine expression. We now show that TLR2 is a functional receptor for SAA. HeLa cells expressing TLR2 responded to SAA with potent activation of NF-κB, which was enhanced by TLR1 expression and blocked by the Toll/IL-1 receptor/resistance (TIR) deletion mutants of TLR1, TLR2 and TLR6. SAA stimulation led to increased phosphorylation of MAP kinases and accelerated IκBα degradation in TLR2-HeLa cells, and results from a solid-phase binding assay showed SAA interaction with the ectodomain of TLR2. Selective reduction of SAA-induced gene expression was observed in tlr2−/− mouse macrophages compared to wild type cells. These results suggest a potential role of SAA in inflammatory diseases through activation of TLR2.
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影响因子:
15.9
作者:
Mullick, AE;Tobias, PS;Curtiss, LK
通讯作者:
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影响因子:
4.4
作者:
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通讯作者:
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DOI:
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发表时间:
1982-01-01
影响因子:
5.2
作者:
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通讯作者:
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影响因子:
27.4
作者:
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通讯作者:
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影响因子:
4.8
作者:
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通讯作者:
van der Westhuyzen, DR