391 results found
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    Polycomb- and REST-associated histone deacetylases are independent pathways toward a mature neuronal phenotype

    James C McGann et al.
    Poised neuronal genes are repressed by REST and Polycomb in embryonic stem cells independently and via different chromatin modifications.
    1. Cancer Biology

    Loss of MGA repression mediated by an atypical polycomb complex promotes tumor progression and invasiveness

    Haritha Mathsyaraja et al.
    The MYC transcription factor network member MGA is a subunit of a non-canonical Polycomb complex, which, when inactivated, accelerates tumorigenesis in mouse models of cancer and proliferation in colon organoids.
    1. Genetics and Genomics

    Age-related changes in polycomb gene regulation disrupt lineage fidelity in intestinal stem cells

    Helen M Tauc et al.
    Global, multi-angled genetic analyses identified an age-associated loss of stem cell lineage fidelity that was linked to changes in polycomb regulation in the Drosophila intestinal epithelium.
    1. Chromosomes and Gene Expression

    RYBP stimulates PRC1 to shape chromatin-based communication between Polycomb repressive complexes

    Nathan R Rose et al.
    The E3 ubiquitin ligase activity of polycomb repressive complex 1 is stimulated by RYBP to support a histone modification-dependent communication between polycomb repressive complexes in mice.
    1. Chromosomes and Gene Expression

    Differentiating Drosophila female germ cells initiate Polycomb silencing by regulating PRC2-interacting proteins

    Steven Z DeLuca et al.
    Characterization of Drosophila female germ cell differentiation shows that nurse cells initiate Polycomb silencing by regulating Pcl and Scm levels to alter the biochemical properties of the PRC2 H3K27 methylase.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    KDM2B links the Polycomb Repressive Complex 1 (PRC1) to recognition of CpG islands

    Anca M Farcas et al.
    A protein that can recognize regions of DNA with a high proportion of unmethylated CpG dinucleotides, and then recruit polycomb group proteins to these CpG islands, has been identified.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Local chromatin environment of a Polycomb target gene instructs its own epigenetic inheritance

    Scott Berry et al.
    Two copies of a Polycomb target gene in the same cell can be maintained in independently heritable expression states, demonstrating that long-term memory of gene expression is stored locally.
    1. Stem Cells and Regenerative Medicine
    2. Chromosomes and Gene Expression

    Polycomb enables primitive endoderm lineage priming in embryonic stem cells

    Robert S Illingworth et al.
    Polycomb enables lineage priming in mouse embryonic stem cells by establishing a barrier to commitment.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Interactions with RNA direct the Polycomb group protein SCML2 to chromatin where it represses target genes

    Roberto Bonasio et al.
    The Polycomb group protein SCML2 contributes to the assembly and gene silencing function of Polycomb Repressive Complex 1 (PRC1) and requires an RNA-binding region to reach chromatin targets.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Live-cell single-molecule tracking reveals co-recognition of H3K27me3 and DNA targets polycomb Cbx7-PRC1 to chromatin

    Chao Yu Zhen et al.
    Live-cell single-molecule tracking reveals that hierarchical cooperation within the Polycomb Cbx7 protein between the low-affinity H3K27me3-binding module and the high-affinity DNA-binding cassette targets Polycomb repressive complex 1 to chromatin.

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