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Identification of targets genes of PRDM2 in G0 arrested myoblasts of C2C12

ABSTRACT: PRDM2 directly associates with the Myogenin promoter and repress its transcription. This led to the hypothesis that PRDM2 could potentially associate directly with other promoters and regulate their expression.To gain further insight into the pathways and genes controlled by PRDM2, ChIP-on-Chip analysis was performed using mouse 44K promoter array. Since PRDM2 represses transcription by H3K9 dimethylation, we were interested in determining which targets were occupied by PRDM2 as well as showed enrichment for H3K9me2. Hence ChIP-on-Chip analysis for H3K9me2 was performed to find the overlap between PRDM2 and H3K9me2 marked promoters.

ORGANISM(S): Mus musculus

PROVIDER: GSE58748 | GEO | 2015/06/30

SECONDARY ACCESSION(S): PRJNA253333

REPOSITORIES: GEO

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Identification of targets genes of PRDM2 in G0 arrested myoblasts of C2C12

Project description:PRDM2 directly associates with the Myogenin promoter and repress its transcription. This led to the hypothesis that PRDM2 could potentially associate directly with other promoters and regulate their expression.To gain further insight into the pathways and genes controlled by PRDM2, ChIP-on-Chip analysis was performed using mouse 44K promoter array. Since PRDM2 represses transcription by H3K9 dimethylation, we were interested in determining which targets were occupied by PRDM2 as well as showed enrichment for H3K9me2. Hence ChIP-on-Chip analysis for H3K9me2 was performed to find the overlap between PRDM2 and H3K9me2 marked promoters. Agilent two-color ChIP-on-Chip experiment, Organism: Mus musculus ,Genotypic Technology designed Custom Mouse Promoter 244k ChIP-on-chip Array (AMADID-019046)

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Project description:Plants are continuously exposed to environmental triggers, including mechanical stimulation. Our results demonstrate that jasmonic acid (JA)-signalling plays a key role in very early gene expression changes, well before it leads to touch-induced developmental changes. We show that the JA-activated transcription factors MYC2/MYC3/MYC4 co-regulate touch-induced gene expression of 266 genes, many of which peak in induction around 25 minutes and then rapidly decline by 40-60 minutes. ChIP-seq shows that MYC2 dynamically binds hundreds of touch-induced promoters within 25 minutes. Promoter activation assays confirm that MYC2 directly activates these touch-induced promoters. By combining multi-omic data, we have identified a core MYC2/3/4-dependent ‘touch regulon’, containing many previously-unknown MYC2 targets like bHLH19 and ERF109. We show bHLH19 can in turn directly activate the ORA47 promoter, indicating that MYC2/3/4 initiate a hierarchical network of downstream transcription factors. Through hormone profiling we reveal the rapid touch-induced accumulation of JA/JA-isoleucine is directly controlled by MYC2/3/4 in a positive amplification loop regulating JA-biosynthesis genes.

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