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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Van Hogerlinden, M. Toftgård, R. Tobin, D. |
| Description | Author Affiliation: Tobin D ( Department of Bioscience at Novum, Karolinska Institute, NOVUM, Huddinge, Sweden.); |
| Abstract | Exposure of mammalian skin to UV light results in induced gene transcription, playing a role in inflammation, immunosuppression, and tumor promotion. One important group of transcription factors induced by UV radiation is composed of members of the Rel/NF-kappa B family, which are known to play a major role in the transcriptional activation of many genes encoding inflammatory cytokines, adhesion molecules, and viral proteins. However, the upstream events in the transduction of the UVB signal to Rel protein activity are, as yet, unknown. Here, we provide biochemical evidence that exposure of keratinocytes to UVB causes rapid association of tumor necrosis factor (TNF) receptor 1 with its downstream partner TRAF-2. The functional relevance of this association is demonstrated by experiments showing that expression of a dominant negative TNF receptor 1 or TRAF-2 protein inhibits UVB-induced Rel-dependent transcription. Inclusion of a neutralizing antibody toward TNF alpha has no effect on UVB activation of a Rel-responsive reporter gene. Therefore, UVB-induced activation of Rel proteins via TNF receptor 1, independent of ligand activation, is a key component in the UV response in keratinocytes. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 2 |
| Volume Number | 95 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1998-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Keratinocytes Metabolism Radiation Effects NF-kappa B Oncogenes Proteins Receptors, Tumor Necrosis Factor Animals Cell Line Gene Expression Regulation Mice Genetics Signal Transduction TNF Receptor-Associated Factor 2 Ultraviolet Rays Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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