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Gene Expression Fingerprinting for human Hereditary Haemorrhagic Telangiectasia (HHT). Hum. Mol.

AutorFernandez-Lopez, Africa ; Garrido-Martin, Eva M. ; Sanz-Rodriguez, Francisco; Pericacho, Miguel ; Rodríguez-Barbero, Alicia; Eleno, Nélida; López-Novoa, José M.; Düwell, Annette; Vega, Miguel A. ; Bernabéu, Carmelo ; Botella, Luisa María
Fecha de publicación1-jul-2007
EditorOxford University Press
CitaciónHuman Molecular Genetics 16(13):1515-1533(2007)
ResumenHereditary hemorrhagic telangiectasia (HHT) or Osler–Weber–Rendu syndrome is an autosomal dominant vascular disorder characterized by telangiectases and internal arteriovenous malformations. It is caused by mutations in elements of the transforming growth factor-β (TGF-β) receptor complex: endoglin, a co-receptor, responsible for HHT1, or ALK1 (activin receptor-like kinase 1), a type I receptor leading to HHT2. Recently, we have established cultures of HHT endothelial cells, primary targets of the disease. These cells showed deficient TGF-β signaling and angiogenesis, representing a useful human model to study the molecular mechanism of this disease. To understand the pathogenic mechanism underlying HHT, we have used total RNA probes to compare HHT versus non-HHT cells by expression microarrays. This work represents a systematic study to identify target genes affected in HHT cells. Given the similarity of symptoms in HHT1 and HHT2, special interest has been put on the identification of common targets for both HHT types. As a result, 277 downregulated and 63 upregulated genes were identified in HHT versus control cells. These genes are involved in biological processes relevant to the HHT pathology, such as angiogenesis, cytoskeleton, cell migration, proliferation and NO synthesis. The type of misregulated genes found in HHT endothelial cells lead us to propose a model of HHT pathogenesis, opening new perspectives to understand this disorder. Moreover, as the disease is originated by mutations in proteins of the TGF-β receptor complex, these results may be useful to find out targets of the TGF-β pathway in endothelium
Descripción19 páginas, 8 figuras, 4 tablas -- PAGS nros. 1515-1533
Versión del editorhttp://dx.doi.org/ 10.1093/hmg/ddm069
URIhttp://hdl.handle.net/10261/49727
DOI10.1093/hmg/ddm069
ISSN0964-6906
E-ISSN1460-2083
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