| pubmed-article:12181450 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C0011306 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C0039635 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1456820 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1539081 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1705525 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1417708 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1423613 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1523116 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1879547 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C0392760 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C1705630 | lld:lifeskim |
| pubmed-article:12181450 | lifeskim:mentions | umls-concept:C0429403 | lld:lifeskim |
| pubmed-article:12181450 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:12181450 | pubmed:dateCreated | 2002-8-15 | lld:pubmed |
| pubmed-article:12181450 | pubmed:abstractText | 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) suppresses many immune responses, both innate and adaptive. Suppression is mediated by the aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor. The AhR mediates TCDD toxicity presumably through the alteration of transcriptional events, either by promoting gene expression or potentially by physically interacting with other transcription factors. Another transcription factor, NF-kappaB/Rel, is involved in several signaling pathways in immune cells and is crucial for generating effective immune responses. Dendritic cells (DCs), considered to be the "pacemakers" of the immune system, were recently recognized as targets of TCDD and are also dependent on NF-kappaB/Rel for activation and survival. In these studies, we investigated whether TCDD would alter the activation of NF-kappaB/Rel in DCs. The dendritic cell line DC2.4 was exposed to TCDD before treatment with tumor necrosis factor alpha (TNF-alpha) or anti-CD40, and NF-kappaB/Rel activation was measured by electrophoretic mobility shift assay and immunoblotting. TCDD suppressed the binding of NF-kappaB/Rel to its cognate response element in TNF-alpha- and anti-CD40-treated cells and blocked translocation to the nucleus. The AhR was shown to associate with RelA, after coimmunoprecipitation, and seemed to block its binding to DNA. It is noteworthy that p50 homodimers freely bound to DNA. These results suggest that TCDD may alter the balance between NF-kappaB/Rel heterodimers and transcriptional inhibitory p50 homodimers in DCs, leading to defects in the DCs and suppression of the immune response. | lld:pubmed |
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| pubmed-article:12181450 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:12181450 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:12181450 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:12181450 | pubmed:month | Sep | lld:pubmed |
| pubmed-article:12181450 | pubmed:issn | 0026-895X | lld:pubmed |
| pubmed-article:12181450 | pubmed:author | pubmed-author:ZhuP NPN | lld:pubmed |
| pubmed-article:12181450 | pubmed:author | pubmed-author:KerkvlietNanc... | lld:pubmed |
| pubmed-article:12181450 | pubmed:author | pubmed-author:RubyCarl ECE | lld:pubmed |
| pubmed-article:12181450 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:12181450 | pubmed:volume | 62 | lld:pubmed |
| pubmed-article:12181450 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:12181450 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:12181450 | pubmed:pagination | 722-8 | lld:pubmed |
| pubmed-article:12181450 | pubmed:dateRevised | 2007-11-14 | lld:pubmed |
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| pubmed-article:12181450 | pubmed:year | 2002 | lld:pubmed |
| pubmed-article:12181450 | pubmed:articleTitle | 2,3,7,8-Tetrachlorodibenzo-p-dioxin suppresses tumor necrosis factor-alpha and anti-CD40-induced activation of NF-kappaB/Rel in dendritic cells: p50 homodimer activation is not affected. | lld:pubmed |
| pubmed-article:12181450 | pubmed:affiliation | Department of Environmental and Molecular Toxicology, and Environmental Health Science Center, Oregon State University, Corvallis, Oregon 97331, USA. | lld:pubmed |
| pubmed-article:12181450 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:12181450 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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