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Stem cells self-renew or differentiate under the governance of a stem-cell-specific transcriptional program, with each transcription factor orchestrating the activities of a particular set of genes. Here we demonstrate that a single transcription factor is able to regulate distinct core circuitries in two different blastocyst-derived stem cell lines, embryonic stem cells (ESCs) and extraembryonic...
Transcription factors (TFs) and their specific interactions with targets are crucial for specifying gene-expression programs. To gain insights into the transcriptional regulatory networks in embryonic stem (ES) cells, we use chromatin immunoprecipitation coupled with ultra-high-throughput DNA sequencing (ChIP-seq) to map the locations of 13 sequence-specific TFs (Nanog, Oct4, STAT3, Smad1, Sox2, Zfx,...
Epigenetic modifications are crucial for proper lineage specification and embryo development. To explore the chromatin modification landscapes in human ES cells, we profiled two histone modifications, H3K4me3 and H3K27me3, by ChIP coupled with the paired-end ditags sequencing strategy. H3K4me3 was found to be a prevalent mark and occurred in close proximity to the promoters of two-thirds of total...
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