Internalization of Dectin-1 terminates induction of inflammatory responses.
Internalization of Dectin-1 terminates induction of inflammatory responses.
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DOI:
10.1002/eji.200838687
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发表时间:
2009-02
影响因子:
5.4
通讯作者:
Reis e Sousa, Caetano
中科院分区:
文献类型:
--
作者:
Hernanz-Falcon, Patricia;Joffre, Olivier;Williams, David L.;Reis e Sousa, Caetano
Dectin-1 is a pattern-recognition receptor recognizing β-(1,3)-glucans found on fungal cell walls. Dectin-1 plays an important role in immunity to fungi by mediating phagocytic clearance of fungal particles and inducing transcription of innate response genes. We show here that the two processes are linked and that Dectin-1 signalling for inflammation is attenuated by phagocytosis. Blocking Dectin-1 ligand-dependent internalization using either actin polymerization or dynamin inhibitors, large non-phagocytosable β-glucan particles or poorly phagocytic cells leads in all cases to enhanced and sustained activation of downstream signalling pathways and culminates in production of high levels of pro-inflammatory cytokines. These findings establish the importance of phagocytosis not only in the clearance of pathogens, but also in the modulation of pattern-recognition receptor signalling and strongly suggest that internalization is the first step to attenuation of Dectin-1-mediated pro-inflammatory responses.
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DOI:
10.1084/jem.20021890
发表时间:
2003-05-05
期刊:
The Journal of experimental medicine
影响因子:
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通讯作者:
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DOI:
10.1084/jem.20060221
发表时间:
2006-07-10
期刊:
The Journal of experimental medicine
影响因子:
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