A role for NF-kappaB-dependent gene transactivation in sunburn.
J Clin Invest
; 105(12): 1751-9, 2000 Jun.
Article
en En
| MEDLINE
| ID: mdl-10862790
Exposure of skin to ultraviolet (UV) radiation is known to induce NF-kappaB activation, but the functional role for this pathway in UV-induced cutaneous inflammation remains uncertain. In this study, we examined whether experimentally induced sunburn reactions in mice could be prevented by blocking UV-induced, NF-kappaB-dependent gene transactivation with oligodeoxynucleotides (ODNs) containing the NF-kappaB cis element (NF-kappaB decoy ODNs). UV-induced secretion of IL-1, IL-6, TNF-alpha, and VEGF by skin-derived cell lines was inhibited by the decoy ODNs, but not by the scrambled control ODNs. Systemic or local injection of NF-kappaB decoy ODNs also inhibited cutaneous swelling responses to UV irradiation. Moreover, local UV-induced inflammatory changes (swelling, leukocyte infiltration, epidermal hyperplasia, and accumulation of proinflammatory cytokines) were all inhibited specifically by topically applied decoy ODNs. Importantly, these ODNs had no effect on alternative types of cutaneous inflammation caused by irritant or allergic chemicals. These results indicate that sunburn reactions culminate from inflammatory events that are triggered by UV-activated transcription of NF-kappaB target genes, rather than from nonspecific changes associated with tissue damage.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Piel
/
Quemadura Solar
/
Rayos Ultravioleta
/
Activación Transcripcional
/
Regulación de la Expresión Génica
/
FN-kappa B
Tipo de estudio:
Etiology_studies
Límite:
Animals
Idioma:
En
Revista:
J Clin Invest
Año:
2000
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos