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Single cell transcriptomics of the cerebral cortex in mice lacking the PRC2 gene Eed

ABSTRACT: The Polycomb Repressive Complex 2 (PRC2) regulates corticogenesis, yet how PRC2 influences cell identity in the mature brain is poorly defined. Using a mouse model in which the PRC2 gene Eed is conditionally deleted from the developing mouse dorsal telencephalon, we performed single nuclei RNA sequencing on the cortical plate of adult heterozygote and homozygote Eed knockout mice compared to controls.

ORGANISM(S): Mus musculus

PROVIDER: GSE276683 | GEO | 2024/09/11

REPOSITORIES: GEO

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Analysis of changes in gene expression in skin epidermis upon conditional knockout of PRC2-subunit Eed

Project description:Analysis of changes in gene expression in skin epidermis upon conditional knockout of the essential Polycomb repressive complex 2 (PRC2) subunit Eed. Loss of Eed in skin epithelium leads to de-repression of key Merkel-differentiation genes, which are known PRC2 targets, and results in ectopic formation of Merkel cells that are associated with all hair types. Gene expression analysis: To determine the changes in gene expression in skin epidermis upon conditional knockout of Eed, total RNA was isolated from skin epidermis in four biologic replicates from cells in different conditions and hybridized to SurePrint G3 Mouse GE 8X60K microarrays (Agilent).

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Acetylation of EED by CBP/P300 Regulates the Targeting of PRC2 and is Required for mESC Differentiation [ChIP-seq]

Project description:Polycomb repressive complex 2 (PRC2) is a chromatin-modifying enzyme that catalyzes the methylation of lysine 27 on histone H3 (H3K27me1/2/3). This complex maintains the gene expression profiles in different cell types and plays an essential role in normal organismal development. The mechanisms by which PRC2 targets specific chromatin regions remain unclear. To address this question, we focused on the post-translational modifications (PTMs) of PRC2 subunits. Here we show EED, a core component of PRC2, is acetylated by acetyltransferase CBP/P300 at lysine 19 (K19). The acetylation of EED at K19 (EED-K19ac) reduces the binding affinity between PRC2 and native nucleosomes, causing PRC2 to leave its chromatin targets in vivo. Genome-wide location analysis (ChIP-seq) reveals that K19-acetylated EED preferentially accumulates at highly transcribed genes with low EZH2 and H3K27me3 levels. Using CRISPR/Cas9 technology, we generated mouse embryonic stem cells (mESCs) carrying non-acetylated EED mimic (EED-K19R) and showed acetylation of EED at K19 is necessary for mESC differentiation. In summary, our study reveals a novel mechanism that allows intracellular signalling pathways to regulate cellular differentiation and cell fate decisions by controlling the genomic targeting of PRC2 through acetylating EED.

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Mouse Embryo Sox1 cre-dependent knockout of EED

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Mouse Embryo E11, E13, E15, E18 conditional knockout of EED, with wt controls

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The Central Role of EED in the Orchestration of Polycomb Group Complexes

Project description:Polycomb Repressive Complexes 1 and 2 (PRC1 and 2) play a critical role in the epigenetic regulation of transcription during cellular differentiation, stem cell pluripotency, and neoplastic progression1-3. Here we show that the Polycomb group protein EED, a core component of PRC2, physically interacts with and functions as part of the PRC1 complex. Components of PRC1 and PRC2 compete for EED binding. EED functions to recruit PRC1 to H3K27me3 loci and enhances PRC1 mediated H2A ubiquitin E3 ligase activity. Taken together, we uncover the integral role of EED as an epigenetic exchange factor coordinating the activities of PRC1 and 2. EED, uH2A, RING1A, RING1B, BMI1 and H3K27Me3 ChIP-seq in EED stable knockdown and control Scramble DU145 prostate cancer cell line

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