245 results found
    1. Cell Biology
    2. Stem Cells and Regenerative Medicine

    Localized epigenetic silencing of a damage-activated WNT enhancer limits regeneration in mature Drosophila imaginal discs

    Robin E Harris et al.
    Localized silencing of damage-responsive enhancers can block regenerative growth while permitting those same genes to be used for normal development.
    1. Biochemistry and Chemical Biology

    Lysine-14 acetylation of histone H3 in chromatin confers resistance to the deacetylase and demethylase activities of an epigenetic silencing complex

    Mingxuan Wu et al.
    Biochemical approaches reveal that an epigenetic histone deacetylase complex called CoREST is slow to deacetylate histone H3 lysine-14 in nucleosomes, and this inhibits demethylation of histone H3 lysine-4 by the CoREST complex.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Aneuploidy as a cause of impaired chromatin silencing and mating-type specification in budding yeast

    Wahid A Mulla et al.
    Genetic analyses reveal that purely quantitative changes in the relative copy number of chromosomes can be sufficient to disrupt the epigenetic mechanisms that define the cells' differentiated state.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Geminivirus-encoded TrAP suppressor inhibits the histone methyltransferase SUVH4/KYP to counter host defense

    Claudia Castillo-González et al.
    A viral protein hijacks the key effector of transcriptional gene silencing, Su(var)3-9, to evade host plant surveillance.
    1. Cancer Biology
    2. Stem Cells and Regenerative Medicine

    A long non-coding RNA targets microRNA miR-34a to regulate colon cancer stem cell asymmetric division

    Lihua Wang et al.
    A novel long non-coding RNA targets microRNA miR-34a for epigenetic silencing and initiates asymmetric division of colon cancer stem cells.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Plant-virus Interactions: Caught in a TrAP

    Delfina A Ré, Pablo A Manavella
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    1. Chromosomes and Gene Expression

    Identification of Pol IV and RDR2-dependent precursors of 24 nt siRNAs guiding de novo DNA methylation in Arabidopsis

    Todd Blevins et al.
    The 24-nucleotide long siRNAs that guide cytosine methylation in Arabidopsis are made by dicing short double-stranded RNAs that are only around 30 nucleotides long.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Heterochromatin: Silencing repetitive DNA

    Nahid Iglesias, Danesh Moazed
    Some RNAs in mammalian cells can help to silence the DNA they are transcribed from.
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