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Series GSE76239 Query DataSets for GSE76239
Status Public on Aug 31, 2017
Title SWI-SNF-like fetal gene reprogramming dynamically regulates epicardial progenitor activity
Organism Mus musculus
Experiment type Genome binding/occupancy profiling by high throughput sequencing
Summary Epicardium-derived cells (EPDCs) contribute cardiac cell types during development and in adulthood respond to Thymosin β4 (Tβ4) and myocardial infarction (MI) by reactivating a fetal gene program to promote neovascularization and cardiomyogenesis. The mechanism for epicardial gene activation remains elusive. Here we reveal that SWI/SNF chromatin-remodeling complexes restored embryonic potential upon MI. BRG1, the essential ATPase subunit of SWI/SNF, physically interacted with Tβ4 and was recruited by CCAAT/enhancer-binding protein β (C/EBPβ) to discrete regulatory elements in the Wilm’s tumor 1 (Wt1) locus. BRG1-Tβ4 co-operative binding promoted transcription of Wt1 as the master regulator of embryonic EPDCs and Wt1as, an antisense lncRNA produced from within intron 1, which increased Wt1 mRNA stability through heteroduplex formation. ChIP-seq revealed global BRG1 binding which was enhanced by Tβ4 at key embryonic epicardial loci downstream of Wt1. These findings reveal novel essential functions for chromatin-remodeling and antisense RNA in the embryonic programming of EPDCs during cardiac development and repair.
Overall design ChIP-seq study using the Illumina platform NextSeq 500. Chromatin immunoprecipitation of BRG1 was performed in biological duplicates using PBS- and Tβ4-primed, -injured adult murine hearts collected four days after MI.
Contributor(s) Vieira JM, Gavriouchkina D, Sauka-Spengler T, Riley PR
Citation(s) 28737171
Submission date Dec 21, 2015
Last update date May 15, 2019
Contact name Joaquim Miguel Vieira
Organization name University of Oxford
Department Department of Physiology, Anatomy & Genetics
Street address South Parks Road
City Oxford
ZIP/Postal code OX1 3PT
Country United Kingdom
Platforms (1)
GPL19057 Illumina NextSeq 500 (Mus musculus)
Samples (8)
GSM1977466 PBS-primed, -injured MI heart rep1
GSM1977467 PBS-primed, -injured MI heart rep2
GSM1977468 Tb4-primed, -injured MI heart rep1
BioProject PRJNA306693
SRA SRP067665

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