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Título: | FGFR4 role in epithelial-mesenchymal transition and its therapeutic value in colorectal cancer |
Autor: | Peláez-García, Alberto; Barderas, Rodrigo CSIC ORCID; Torres, Sofía CSIC ORCID; Hernández-Varas, Pablo CSIC ORCID; Teixidó, Joaquín CSIC ORCID ; Bonilla, Félix; García de Herreros, Antonio CSIC ORCID; Casal, J. Ignacio CSIC ORCID | Fecha de publicación: | 16-may-2013 | Editor: | Public Library of Science | Citación: | PLoS ONE 8(5): e63695 (2013) | Resumen: | [EN]Fibroblast growth factor receptor 4 (FGFR4) is vital in early development and tissue repair. FGFR4 expression levels are very restricted in adult tissues, except in several solid tumors including colorectal cancer, which showed overexpression of FGFR4. Here, FGFR4 mutation analysis discarded the presence of activating mutations, other than Arg388, in different colorectal cancer cell lines and tumoral samples. Stable shRNA FGFR4-silencing in SW480 and SW48 cell lines resulted in a significant decrease in cell proliferation, adhesion, cell migration and invasion. This decrease in the tumorigenic and invasive capabilities of colorectal cancer cells was accompanied by a decrease of Snail, Twist and TGFb gene expression levels and an increase of E-cadherin, causing a reversion to a more epithelial phenotype, in three different cell lines. In addition, FGFR4- signaling activated the oncogenic SRC, ERK1/2 and AKT pathways in colon cancer cells and promoted an increase in cell survival. The relevance of FGFR4 in tumor growth was supported by two different strategies. Kinase inhibitors abrogated FGFR4-related cell growth and signaling pathways at the same extent than FGFR4-silenced cells. Specific FGFR4-targeting using antibodies provoked a similar reduction in cell growth. Moreover, FGFR4 knock-down cells displayed a reduced capacity for in vivo tumor formation and angiogenesis in nude mice. Collectively, our data support a crucial role for FGFR4 in tumorigenesis, invasion and survival in colorectal cancer. In addition, FGFR4 targeting demonstrated its applicability for colorectal cancer therapy | Versión del editor: | http://dx.doi.org/10.1371/journal.pone.0063695 | URI: | http://hdl.handle.net/10261/95862 | DOI: | 10.1371/journal.pone.0063695 | ISSN: | 1932-6203 |
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