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Accession IconSRP092655

Transcriptional repression by non-canonical EED stimulation of histone deacetylase activity is required for heart maturation independently of H3K27me3 [RNA-seq for EED and HDAC rescue]

Organism Icon Mus musculus
Sample Icon 8 Downloadable Samples
Technology Badge IconIllumina HiSeq 2500

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Description
Through H3K27me3 and H3K27ac ChIP-seq and RNA-seq data in wile-tpye (WT) and EED-knockout (CKO) mouse cardiomyocytes, we unexpectedly uncovered a novel mechanism of PRC2-mediated gene repression. EED inactivation in the postnatal heart (EEDCKO) caused progressive, lethal dilated cardiomyopathy, with upregulation of components of the slow-twitch muscle gene program. Surprisingly, upregulation of these genes was not associated with their loss of H3K27me3, but rather with their gain of H3K27 acetylation (H3K27ac), an activating histone mark. Moreover, re-expression of EED in juvenile hearts rescued heart function and normalized H3K27ac, but not H3K27me3. Overall design: RNA-seq in isolated adult cardiomyocytes from 2-month old mice, Wildtype (WT or Het), cardiac conditional EED Knockout (CKO) and CKO injected with AAV9 expressing luciferase, EED or HDAC1/2..
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8
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