NF-κB plays a major role in the maturation of human dendritic cells induced by NiSO4 but not by DNCB

被引:78
作者
Ade, Nadege
Antonios, Diane
Kerdine-Romer, Saadia
Boisleve, Fanny
Rousset, Francoise
Pallardy, Marc
机构
[1] INSERM, UMR S & Toxicol 749, Fac Pharm, F-92296 Chatenay Malabry, France
[2] Univ Paris Sud, F-92296 Chatenay Malabry, France
[3] Oreal Rech, F-92117 Clichy, France
关键词
contact hypersensitivity; NF-kappa B; hapten; dendritic cells;
D O I
10.1093/toxsci/kfm178
中图分类号
R99 [毒物学(毒理学)];
学科分类号
100405 ;
摘要
Dendritic cell (DC) activation is a critical event for the induction of an immune response to haptens. Although signaling pathways such as mitogen-activated protein kinase (MAPK) family members have been reported to play a role in DC activation by haptens, little is known about the implication of the nuclear factor kappa B (NF-kappa B) pathway. In this work, we showed that NiSO4 induced the expression of HLA-DR, CD83, CD86, and CD40 and the production of interleukin (IL)-8, IL-6, and IL-12p40 in human DCs, whereas 1-chloro-2,4-dinitrobenzene (DNCB) induced mainly the expression of CD83 and CD86 and the production of IL-8. NiSO4 but not DNCB was able to activate the degradation of I kappa B-alpha leading to the binding of the p65 subunit of NF-kappa B on specific DNA probes. Inhibition of the NF-kappa B pathway using BAY 11-7085 prevents both CD40 and HLA-DR expression and cytokine production induced by NiSO4. However, BAY 11-7085 only partially inhibited CD86 and CD83 expression induced by NiSO4. In addition, p38 MAPK and NF-kB were independently activated by NiSO4 since SB203580 did not inhibit NF-kappa B activation by NiSO4. Interestingly, we also showed that DNCB inhibited the degradation of IkB-alpha induced by tumor necrosis factor-alpha leading to alteration of CD40, HLA-DR, and CD83 expression but not of CD86 and CCR7. Extensive modifications of DC phenotype by NiSO4 in comparison to DNCB are probably the consequence of NF-kappa B activation by NiSO4 but not by DNCB.
引用
收藏
页码:488 / 501
页数:14
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