Resumen
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 152-158 |
| Número de páginas | 7 |
| Publicación | Biochimica et Biophysica Acta - Gene Structure and Expression |
| DOI | |
| Estado | Published - 1 mar 2006 |
| Publicado de forma externa | Sí |
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β-naphthoflavone represses dystrophin Dp71 expression in Hepa-1 cells. / Bermúdez de León, Mario; Gómez, Pablo; Elizondo, Guillermo; Zatarain-Palacios, Rocío; García-Sierra, Francisco; Cisneros, Bulmaro.
En: Biochimica et Biophysica Acta - Gene Structure and Expression, 01.03.2006, p. 152-158.Resultado de la investigación
TY - JOUR
T1 - β-naphthoflavone represses dystrophin Dp71 expression in Hepa-1 cells
AU - Bermúdez de León, Mario
AU - Gómez, Pablo
AU - Elizondo, Guillermo
AU - Zatarain-Palacios, Rocío
AU - García-Sierra, Francisco
AU - Cisneros, Bulmaro
PY - 2006/3/1
Y1 - 2006/3/1
N2 - Dystrophin Dp71 is expressed in hepatic tissue; however, its function in this tissue remains unknown. The Dp71 promoter sequence contains conserved CACGC motifs, which constitute the invariant core sequence of xenobiotic-regulatory elements. These elements function as target sites for the aryl hydrocarbon receptor/aryl hydrocarbon nuclear translocator (Ahr/ARNT) in genes regulated by this transcription factor. Thus, Dp71 expression in hepatic cells would be regulated by Ahr signaling. In this study, the effect of the xenobiotics β-Naphthoflavone (βNF), 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and Benzo[a]Pyrene (BaP) on Dp71 expression was analyzed in Hepa-1 cells. It was demonstrated that βNF, but not BaP or TCDD, represses Dp71 expression at both transcriptional and translational levels. To test directly the involvement of the Ahr signaling in the negative regulation of Dp71, we analyzed the effect of βNF on Dp71 expression in the liver of wild type (Ahr+/+) and AHR-null (Ahr-/-) mice. The Dp71 mRNA repression, caused by the βNF treatment, was also found in the liver tissue of wild type mice; however, such negative effect was reversed in the liver of AHR-null mice, which supports the participation of the Ahr signaling in Dp71 downregulation. Modulation of Dp71 expression by βNF may represent a novel mechanism of Ahr action. © 2006 Elsevier B.V. All rights reserved.
AB - Dystrophin Dp71 is expressed in hepatic tissue; however, its function in this tissue remains unknown. The Dp71 promoter sequence contains conserved CACGC motifs, which constitute the invariant core sequence of xenobiotic-regulatory elements. These elements function as target sites for the aryl hydrocarbon receptor/aryl hydrocarbon nuclear translocator (Ahr/ARNT) in genes regulated by this transcription factor. Thus, Dp71 expression in hepatic cells would be regulated by Ahr signaling. In this study, the effect of the xenobiotics β-Naphthoflavone (βNF), 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and Benzo[a]Pyrene (BaP) on Dp71 expression was analyzed in Hepa-1 cells. It was demonstrated that βNF, but not BaP or TCDD, represses Dp71 expression at both transcriptional and translational levels. To test directly the involvement of the Ahr signaling in the negative regulation of Dp71, we analyzed the effect of βNF on Dp71 expression in the liver of wild type (Ahr+/+) and AHR-null (Ahr-/-) mice. The Dp71 mRNA repression, caused by the βNF treatment, was also found in the liver tissue of wild type mice; however, such negative effect was reversed in the liver of AHR-null mice, which supports the participation of the Ahr signaling in Dp71 downregulation. Modulation of Dp71 expression by βNF may represent a novel mechanism of Ahr action. © 2006 Elsevier B.V. All rights reserved.
U2 - 10.1016/j.bbaexp.2006.03.005
DO - 10.1016/j.bbaexp.2006.03.005
M3 - Article
SP - 152
EP - 158
JO - Biochimica et Biophysica Acta - Gene Structure and Expression
JF - Biochimica et Biophysica Acta - Gene Structure and Expression
SN - 0167-4781
ER -