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首页> 外文期刊>Infection and immunity >Modulation of Toll-Like Receptor 2 (TLR2) and TLR4 Responses by Aspergillus fumigatus
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Modulation of Toll-Like Receptor 2 (TLR2) and TLR4 Responses by Aspergillus fumigatus

机译:烟曲霉对Toll样受体2(TLR2)和TLR4反应的调节。

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Toll-like receptor (TLR)-based signaling pathways in the host may be modulated by pathogens during the course of infection. We describe a novel immunomodulatory mechanism in which Aspergillus fumigatus conidia induce attenuation of TLR2- and TLR4-mediated interleukin (IL)-6 and IL-1β proinflammatory responses in human mononuclear cells with suppression of IL-1β mRNA transcription. Background TLR2 and TLR4 mRNA transcription was not influenced. A. fumigatus conidia induced TLR2 internalization and uptake into the phagosome with a resultant decrease in surface receptor expression. A. fumigatus hyphae, on the other hand, selectively downregulated the TLR4-mediated response. These novel immunosuppressive effects may facilitate the invasiveness of A. fumigatus.
机译:在感染过程中,病原体可能会调节宿主中基于Toll样受体(TLR)的信号通路。我们描述了一种新型的免疫调节机制,其中烟曲霉分生孢子诱导人单核细胞中TLR2和TLR4介导的白介素(IL)-6和IL-1β促炎反应的减弱,并抑制IL-1βmRNA转录。背景TLR2和TLR4 mRNA的转录不受影响。 A。烟的分生孢子诱导了TLR2的内在化并被吞噬体吸收,导致表面受体表达降低。 A。另一方面,烟熏菌丝选择性下调了TLR4介导的反应。这些新的免疫抑制作用可能促进 A的侵袭性。烟熏

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