English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/82208
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

DICKKOPF-4 is induced by TCF/β-catenin and upregulated in human colon cancer, promotes tumour cell invasion and angiogenesis and is repressed by 1α,25-dihydroxyvitamin D3

AuthorsPendás-Franco, Natalia; García, José M.; Peña, Cristina; Valle, Noelia ; Pálmer, Héctor G.; Jiménez, Benilde ; Bonilla, Félix; Muñoz Terol, Alberto ; González-Sancho, José Manuel
Issue Date2008
PublisherNature Publishing Group
CitationOncogene 27(32): 4467-4477 (2008)
AbstractAberrant activation of the Wnt/β-catenin signaling pathway is a hallmark of colon cancer. We show that the Wnt antagonist DICKKOPF-4 (DKK-4) gene is repressed by 1α,25-dihydroxyvitamin D3 (1,25(OH) 2D3) in human colon cancer cells. This effect correlated with the inhibition of the DKK-4 promoter. Chromatin immunoprecipitation assays revealed that 1,25(OH)2D3 induces early and transient binding of the vitamin D receptor (VDR) and the SMRT corepressor to the region adjacent to the transcription start site of DKK-4. Additionally, we demonstrate that the DKK-4 gene is a new downstream target of TCF/β-catenin. Remarkably, expression of DKK-4 messenger RNA (mRNA) was not detected in a series of 29 human normal (N) colon biopsies but expression was upregulated in all the matched tumour (T) tissues. An inverse correlation existed between the expression of DKK-4 and VDR RNA in the Ts. Ectopic DKK-4 expression increased the migration and invasion properties of colon cancer cells and conditioned media (CM) from DKK-4-expressing cells enhanced the capacity to migrate and form capillary-like tubules of human primary microvascular endothelial cells. In conclusion, DKK-4 is upregulated in colon cancer and is associated with the acquisition of malignant properties by neoplastic cells. DKK-4 downregulation is a novel effect of 1,25(OH)2D3 that may contribute to its anticancer action. © 2008 Macmillan Publishers Limited All rights reserved.
URIhttp://hdl.handle.net/10261/82208
DOI10.1038/onc.2008.88
Identifiersdoi: 10.1038/onc.2008.88
issn: 0950-9232
e-issn: 1476-5594
Appears in Collections:(IIBM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.