Zygotic genome activation during the maternal-to-zygotic transition.
Annu Rev Cell Dev Biol
; 30: 581-613, 2014.
Article
em En
| MEDLINE
| ID: mdl-25150012
ABSTRACT
Embryogenesis depends on a highly coordinated cascade of genetically encoded events. In animals, maternal factors contributed by the egg cytoplasm initially control development, whereas the zygotic nuclear genome is quiescent. Subsequently, the genome is activated, embryonic gene products are mobilized, and maternal factors are cleared. This transfer of developmental control is called the maternal-to-zygotic transition (MZT). In this review, we discuss recent advances toward understanding the scope, timing, and mechanisms that underlie zygotic genome activation at the MZT in animals. We describe high-throughput techniques to measure the embryonic transcriptome and explore how regulation of the cell cycle, chromatin, and transcription factors together elicits specific patterns of embryonic gene expression. Finally, we illustrate the interplay between zygotic transcription and maternal clearance and show how these two activities combine to reprogram two terminally differentiated gametes into a totipotent embryo.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transcrição Gênica
/
Zigoto
/
Regulação da Expressão Gênica no Desenvolvimento
/
RNA Mensageiro Estocado
/
Desenvolvimento Embrionário
Tipo de estudo:
Prognostic_studies
Limite:
Animals
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article