ß8 integrin and band 4.1B cooperatively regulate morphogenesis of the embryonic heart.
Dev Dyn
; 240(1): 271-7, 2011 Jan.
Article
em En
| MEDLINE
| ID: mdl-21181944
ABSTRACT
Morphogenesis of the heart is regulated by various cues, including growth factors and extracellular matrix (ECM) proteins. The mechanisms by which cardiac cells properly integrate these cues to regulate growth, differentiation, and migration remain poorly understood. Here we have used genetic strategies in mice to identify αvß8 integrin and its cytoskeletal adaptor protein, Band 4.1B, as essential regulators of cardiac morphogenesis. We demonstrate that approximately 60% of mouse embryos genetically null for ß8 integrin and Band 4.1B display cardiovascular phenotypes and die by E11.5. This premature death is due, in part, to defective development of the cardiac outflow tract (OFT), with reduced expression of smooth muscle α-actin (SMAα-actin) in OFT cells derived from the cardiac neural crest. These data are the first to identify cell adhesion and signaling pathways regulated by αvß8 integrin and Band 4.1B as essential for normal formation and function of the heart during embryogenesis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas do Citoesqueleto
/
Cadeias beta de Integrinas
/
Coração
/
Proteínas de Membrana
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Dev Dyn
Assunto da revista:
ANATOMIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos