Nucleoporin Insufficiency Disrupts a Pluripotent Regulatory Circuit in a Pro-arrhythmogenic Stem Cell Line

Overview

Journal Sci Rep

Specialty Science

Date 2019 Sep 5

PMID 31481660

Citations 5

Authors

Claudia C Preston

Emily C Storm

Ryan D Burdine

Tyler A Bradley

Andrew D Uttecht

Randolph S Faustino

Affiliations

Soon will be listed here.

Abstract

Nucleoporins have been reported to regulate pluripotent biology, but how they do so remains partially characterized. This study examined the effects of nup155 gene disruption on mouse embryonic stem cells to gain insights into possible mechanisms by which nucleoporins regulate pluripotency in a pro-arrhythmogenic stem cell line. Embryonic stem cells with gene-trapped nup155 exhibited aberrant colony morphology underscored by abnormal transcriptome remodeling. Bioinformatic analysis of whole transcriptome data from nup155 embryonic stem cells revealed changes in a variety of non-coding RNA elements, with significant under expression of miR291a, miR291b, miR293, and miR294. These miRNAs are members of the larger regulatory miR290-295 cluster that regulates pluripotency and are controlled by the canonical stem cell-related factors SOX2, OCT4, and NANOG. Expression analysis of these factors revealed downregulation in all three, supported by biochemical profiling and image analysis. These data implicate disruption of the miR-SOX2/OCT4/NANOG regulatory circuit occurs downstream of nup155 gene lesion.

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