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Genome-wide analysis of HoxBlinc lncRNA downstream targets in mouse ESC-derived embryonic bodies

ABSTRACT: We find a new non-coding transcript associated with active HoxB locus, which we named HoxBlinc lncRNA. We report that HoxBlinc RNA specifies Flk1+ mesoderm and then promotes the development of HS/PCs and cardiomyocytes. To understand the molecular pathways reguated by HoxBlinc, we generate two doxycycline inducible KD ES R1E cell lines, then differentiate these cell lines to day 6 via embryonic bodies stage. RNA-seq analysis were performed for day 6 EBs with or without doxycycline treatment starting at Flk1+ mesodermal stage.

ORGANISM(S): Mus musculus

PROVIDER: GSE74894 | GEO | 2015/11/11

SECONDARY ACCESSION(S): PRJNA301737

REPOSITORIES: GEO

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Project description:The ability of cells to perceive and translate versatile cues into differential chromatin and transcriptional states is critical for many biological processes1-4. In plants, timely transition to a flowering state is crucial for successful reproduction5-7. EARLY BOLTING IN SHORT DAY (EBS) is a negative transcriptional regulator that prevents premature flowering in Arabidopsis8,9. Here, we revealed that bivalent bromo-adjacent homology (BAH)-plant homeodomain (PHD) reader modules of EBS bind H3K27me3 and H3K4me3, respectively. A subset of EBS-associated genes was co-enriched with H3K4me3, H3K27me3, and the Polycomb repressor complex 2 (PRC2). Interestingly, EBS adopts an auto-inhibition mode to mediate its binding preference switch between H3K27me3 and H3K4me3. This binding balance is critical because disruption of either EBS-H3K27me3 or EBS-H3K4me3 interaction induces EBS-mediated early floral transition. This study identifies a single bivalent chromatin reader capable of recognizing two antagonistic histone marks and reveals a distinct mechanism of interplay between active and repressive chromatin states.The ability of cells to perceive and translate versatile cues into differential chromatin and transcriptional states is critical for many biological processes1-4. In plants, timely transition to a flowering state is crucial for successful reproduction5-7. EARLY BOLTING IN SHORT DAY (EBS) is a negative transcriptional regulator that prevents premature flowering in Arabidopsis8,9. Here, we revealed that bivalent bromo-adjacent homology (BAH)-plant homeodomain (PHD) reader modules of EBS bind H3K27me3 and H3K4me3, respectively. A subset of EBS-associated genes was co-enriched with H3K4me3, H3K27me3, and the Polycomb repressor complex 2 (PRC2). Interestingly, EBS adopts an auto-inhibition mode to mediate its binding preference switch between H3K27me3 and H3K4me3. This binding balance is critical because disruption of either EBS-H3K27me3 or EBS-H3K4me3 interaction induces EBS-mediated early floral transition. This study identifies a single bivalent chromatin reader capable of recognizing two antagonistic histone marks and reveals a distinct mechanism of interplay between active and repressive chromatin states.v

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Genome-wide analysis of HoxBlinc lncRNA downstream targets in mouse ESC-derived embryonic bodies

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