The pluripotent genome in three dimensions is shaped around pluripotency factors.
Nature
; 501(7466): 227-31, 2013 Sep 12.
Article
en En
| MEDLINE
| ID: mdl-23883933
ABSTRACT
It is becoming increasingly clear that the shape of the genome importantly influences transcription regulation. Pluripotent stem cells such as embryonic stem cells were recently shown to organize their chromosomes into topological domains that are largely invariant between cell types. Here we combine chromatin conformation capture technologies with chromatin factor binding data to demonstrate that inactive chromatin is unusually disorganized in pluripotent stem-cell nuclei. We show that gene promoters engage in contacts between topological domains in a largely tissue-independent manner, whereas enhancers have a more tissue-restricted interaction profile. Notably, genomic clusters of pluripotency factor binding sites find each other very efficiently, in a manner that is strictly pluripotent-stem-cell-specific, dependent on the presence of Oct4 and Nanog protein and inducible after artificial recruitment of Nanog to a selected chromosomal site. We conclude that pluripotent stem cells have a unique higher-order genome structure shaped by pluripotency factors. We speculate that this interactome enhances the robustness of the pluripotent state.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Cromatina
/
Genoma
/
Imagenología Tridimensional
/
Células Madre Pluripotentes
/
Posicionamiento de Cromosoma
Límite:
Animals
Idioma:
En
Revista:
Nature
Año:
2013
Tipo del documento:
Article
País de afiliación:
Países Bajos