Project description:These experiments were designed to test the hypothesis that REST and Polycomb Repressor Complex 2 function cooperatively in undifferentiated ESCs. Our results showed that a majority of REST-bound genomic regions were not associated with H3K27me3 enrichment and loss of H3K27me3 enrichment was not a general observation in REST -/- ESCs. These results support the conclusion that REST and PRC2 function independently in ESCs and similarly contribute to maintaing a transcriptionally poised state through antagonism of H3K4me3. Examination of REST-bound regions in undifferentiated mouse embryonic stem cells (ESC), and a comparison of H3K27me3 distribution between WT and REST-/- ESCs.
Project description:In this experiment the binding of SOX2, B-catenin, and LEF1 was assayed using ChIP-seq following differentiation of WT, T/Bra mutant, and Cdx1,2,4 triple mutant embryonic stem cells to caudal ebiblast progenitors. SOX2 binding in epiblast cells was assayed for comparison.
Project description:Transcriptional comparison of mouse embryonic stem cells, inner cell mass, epiblast and pluripotent cells derived from mouse epiblast under defined culture conditions.
Project description:We performed an integrated analysis of RNA and proteins at the transition between naïve ES cells and cells primed to differentiate. During this transition, mRNAs coding for chromatin regulators were specifically released from translational inhibition mediated by RNA-Induced Silencing Complex (RISC). This suggests that, prior to differentiation, the propensity of ES cells to change their epigenetic status is hampered by RNA interference. The expression of these chromatin regulators was reinstated following acute inactivation of RISC, and it correlated with loss of stemness markers and activation of early cell differentiation markers in treated ES cells. Comparison between EpiSC derived directly from mouse embryonic stem cells and from Epiblast-Like Aggregates
Project description:TAF4 directed immunoprecipitation of the the Pre-initiation complex from mouse embryonic stem cells with or without depletion of TATA-box binding protein (TBP).
2022-05-27 | MSV000089562 | MassIVE
Project description:Expression profiles of epiblast stem cells and embryonic stem cells
Project description:Genome-wide analysis of REST and Polycomb binding in Rest-/- and Eed-/- mouse embryonic stem (mES) cells showed that Rest was required for PRC1 recruitment to a subset of Polycomb regulated neuronal genes. Furthermore, we found that PRC1 can be recruited to Rest binding sites independently of CpG islands and the H3K27Me3 mark., and that PRC2 was frequently increased around Rest binding sites located in CpG-rich regions in the Rest2/2 mES cells. Published here: PLoS Genet 8(3): e1002494. doi:10.1371/journal.pgen.1002494
