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Genes Dev. 2016 Oct 15;30(20):2253-2258. Epub 2016 Nov 2.

Nucleoporin-mediated regulation of cell identity genes.

Author information

1
Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA.
2
Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, California 92037, USA.

Abstract

The organization of the genome in the three-dimensional space of the nucleus is coupled with cell type-specific gene expression. However, how nuclear architecture influences transcription that governs cell identity remains unknown. Here, we show that nuclear pore complex (NPC) components Nup93 and Nup153 bind superenhancers (SE), regulatory structures that drive the expression of key genes that specify cell identity. We found that nucleoporin-associated SEs localize preferentially to the nuclear periphery, and absence of Nup153 and Nup93 results in dramatic transcriptional changes of SE-associated genes. Our results reveal a crucial role of NPC components in the regulation of cell type-specifying genes and highlight nuclear architecture as a regulatory layer of genome functions in cell fate.

KEYWORDS:

cell identity; nuclear architecture; nuclear pore complex; nucleoporin; superenhancer; transcription

PMID:
27807035
PMCID:
PMC5110992
DOI:
10.1101/gad.287417.116
[Indexed for MEDLINE]
Free PMC Article

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