A gene regulatory program controlling early Xenopus mesendoderm formation: Network conservation and motifs.
Semin Cell Dev Biol
; 66: 12-24, 2017 06.
Article
em En
| MEDLINE
| ID: mdl-28341363
ABSTRACT
Germ layer formation is among the earliest differentiation events in metazoan embryos. In triploblasts, three germ layers are formed, among which the endoderm gives rise to the epithelial lining of the gut tube and associated organs including the liver, pancreas and lungs. In frogs (Xenopus), where early germ layer formation has been studied extensively, the process of endoderm specification involves the interplay of dozens of transcription factors. Here, we review the interactions between these factors, summarized in a transcriptional gene regulatory network (GRN). We highlight regulatory connections conserved between frog, fish, mouse, and human endodermal lineages. Especially prominent is the conserved role and regulatory targets of the Nodal signaling pathway and the T-box transcription factors, Vegt and Eomes. Additionally, we highlight network topologies and motifs, and speculate on their possible roles in development.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fatores de Transcrição
/
Xenopus
/
Proteínas de Xenopus
/
Endoderma
/
Redes Reguladoras de Genes
Limite:
Animals
Idioma:
En
Revista:
Semin Cell Dev Biol
Assunto da revista:
EMBRIOLOGIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Estados Unidos