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Demethylation of H3K27 Regulates Polycomb Recruitment and H2A Ubiquitination
TLDR
It is shown that human UTX, a member of the Jumonji C family of proteins, is a di- and trimethyl H3K27 demethylase, and a concerted mechanism for transcriptional activation in which cycles of H3k4 methylation by MLL2/3 are linked with the demethylation of H 3K27 through UTX.
Polycomb Complex 2 Is Required for E-cadherin Repression by the Snail1 Transcription Factor
TLDR
It is demonstrated that Snail1 recruits PRC2 to the CDH1 promoter and requires the activity of this complex to repress E-cadherin expression.
Landscape of somatic mutations and clonal evolution in mantle cell lymphoma
TLDR
This study identifies molecular mechanisms contributing to MCL pathogenesis and offers potential targets for therapeutic intervention.
Methyltransferase Recruitment and DNA Hypermethylation of Target Promoters by an Oncogenic Transcription Factor
TLDR
It is reported here that the leukemia-promoting PML-RAR fusion protein induces gene hypermethylation and silencing by recruiting DNA methyltransferases to target promoters and that hyper methylation contributes to its leukemogenic potential.
3D structure of individual mammalian genomes studied by single cell Hi-C
TLDR
3D structures of entire mammalian genomes are calculated using data from a new chromosome conformation capture procedure that allows genome folding to be examined at a scale of less than 100 kb, and chromosome structures to be validated.
Myc represses transcription through recruitment of DNA methyltransferase corepressor
TLDR
The data identify a new mechanism by which Myc can silence gene expression not only by passive functional interference but also by active recruitment of corepressor proteins, suggesting that targeting of DNA methyltransferases by transcription factors is a wide and general mechanism for the generation of specific DNA methylation patterns within a cell.
Regulation of gene transcription by Polycomb proteins
TLDR
The diversity of PcG complexes in mammalian cells is discussed, newly identified modes of recruitment to chromatin are examined, and the latest insights into the molecular mechanisms underlying the function of P cGs in transcription regulation and three-dimensional chromatin conformation are highlighted.
Roles of the Polycomb group proteins in stem cells and cancer
TLDR
The roles of Polycomb proteins in stem cell biology, and the impact their misregulation can have on cancer are recapitulate.
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