Publication

Multiscale 3D Genome Rewiring during Mouse Neural Development.

current
   August 12th, 2019 at 2:45pm

Overview


Abstract

Chromosome conformation capture technologies have revealed important insights into genome folding. Yet, how spatial genome architecture is related to gene expression and cell fate remains unclear. We comprehensively mapped 3D chromatin organization during mouse neural differentiation in vitro and in vivo, generating the highest-resolution Hi-C maps available to date. We found that transcription is correlated with chromatin insulation and long-range interactions, but dCas9-mediated activation is insufficient for creating TAD boundaries de novo. Additionally, we discovered long-range contacts between gene bodies of exon-rich, active genes in all cell types. During neural differentiation, contacts between active TADs become less pronounced while inactive TADs interact more strongly. An extensive Polycomb network in stem cells is disrupted, while dynamic interactions between neural transcription factors appear in vivo. Finally, cell type-specific enhancer-promoter contacts are established concomitant to gene expression. This work shows that multiple factors influence the dynamics of chromatin interactions in development.

Authors

Bonev B  •  Mendelson Cohen N  •  Szabo Q  •  Fritsch L  •  Papadopoulos GL  •  Lubling Y  •  Xu X  •  Lv X  •  Hugnot JP  •  Tanay A  •  Cavalli G

Link

https://www.ncbi.nlm.nih.gov/pubmed/29053968


Journal

Cell

PMID:29053968

Published

October 19th, 2017