期刊
IMMUNOLOGY LETTERS
卷 125, 期 1, 页码 72-77出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.imlet.2009.06.004
关键词
S. mansoni; Tegument; Dendritic cell; Schistosomula
类别
资金
- CNPq
Schistosoma mansoni schistosomula are the most susceptible parasite life stage to host immune system attack. Complex host-parasite interactions take place on Schistosoma tegument, which is a unique double membrane structure involved in nutrition and immune evasion. Herein, we have demonstrated that schistosomula tegument (Smteg) activates Dendritic cells to produce IL-12p40, TNF-alpha and also to upregulate the co-stimulatory molecules CD40 and CD86. Moreover, using DCs derived from MyD88-, TLR2-, TLR4- and TLR9-deficient mice we have shown that the ability of Smteg to activate DCs to produce IL-12 and TNF-a involves TLR4/Smteg interaction and MyD88 signaling pathway. Finally, our findings lead us to conclude that TLR4 is a key receptor involved in Smteg induction of pro-inflammatory cytokines. (C) 2009 Elsevier B.V. All rights reserved.
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