Search Results - "Karpen, Gary"
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Heterochromatin: Guardian of the Genome
Published in Annual review of cell and developmental biology (06-10-2018)“…Constitutive heterochromatin is a major component of the eukaryotic nucleus and is essential for the maintenance of genome stability. Highly concentrated at…”
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Double-Strand Breaks in Heterochromatin Move Outside of a Dynamic HP1a Domain to Complete Recombinational Repair
Published in Cell (04-03-2011)“…Double-strand breaks (DSBs) in heterochromatic repetitive DNAs pose significant threats to genome integrity, but information about how such lesions are…”
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Phase separation drives heterochromatin domain formation
Published in Nature (London) (13-07-2017)“…HP1a can nucleate into foci that display liquid properties during the early stages of heterochromatin domain formation in Drosophila embryos, suggesting that…”
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Epigenetic regulation of centromeric chromatin: old dogs, new tricks?
Published in Nature reviews. Genetics (01-12-2008)“…Key Points Chromosomal DNA is packaged with histones into nucleosomes. Following replication, sister-chromatid segregation is orchestrated to ensure that each…”
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Heterochromatic breaks move to the nuclear periphery to continue recombinational repair
Published in Nature cell biology (01-11-2015)“…Heterochromatin mostly comprises repeated sequences prone to harmful ectopic recombination during double-strand break (DSB) repair. In Drosophila cells, ‘safe’…”
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Centromere and kinetochore gene misexpression predicts cancer patient survival and response to radiotherapy and chemotherapy
Published in Nature communications (31-08-2016)“…Chromosomal instability (CIN) is a hallmark of cancer that contributes to tumour heterogeneity and other malignant properties. Aberrant centromere and…”
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Heterochromatic genome stability requires regulators of histone H3 K9 methylation
Published in PLoS genetics (01-03-2009)“…Heterochromatin contains many repetitive DNA elements and few protein-encoding genes, yet it is essential for chromosome organization and inheritance. Here, we…”
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Pervasive epigenetic effects of Drosophila euchromatic transposable elements impact their evolution
Published in eLife (11-07-2017)“…Transposable elements (TEs) are widespread genomic parasites, and their evolution has remained a critical question in evolutionary genomics. Here, we study the…”
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Timely double-strand break repair and pathway choice in pericentromeric heterochromatin depend on the histone demethylase dKDM4A
Published in Genes & development (01-01-2019)“…Repair of DNA double-strand breaks (DSBs) must be orchestrated properly within diverse chromatin domains in order to maintain genetic stability. Euchromatin…”
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H3K9 methylation and RNA interference regulate nucleolar organization and repeated DNA stability
Published in Nature cell biology (01-01-2007)“…Investigations aimed at identifying regulators of nuclear architecture in Drosophila demonstrated that cells lacking H3K9 methylation and RNA interference…”
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Assembly of Drosophila centromeric chromatin proteins during mitosis
Published in PLoS genetics (01-05-2011)“…Semi-conservative segregation of nucleosomes to sister chromatids during DNA replication creates gaps that must be filled by new nucleosome assembly. We…”
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The Release 6 reference sequence of the Drosophila melanogaster genome
Published in Genome research (01-03-2015)“…Drosophila melanogaster plays an important role in molecular, genetic, and genomic studies of heredity, development, metabolism, behavior, and human disease…”
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13
DNA double-strand break movement in heterochromatin depends on the histone acetyltransferase dGcn5
Published in Nucleic acids research (28-10-2024)“…Cells employ diverse strategies to repair double-strand breaks (DSBs), a dangerous form of DNA damage that threatens genome integrity. Eukaryotic nuclei…”
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Assembly of Drosophila Centromeric Nucleosomes Requires CID Dimerization
Published in Molecular cell (27-01-2012)“…Centromeres are essential chromosomal regions required for kinetochore assembly and chromosome segregation. The composition and organization of centromeric…”
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Pericentromeric heterochromatin is hierarchically organized and spatially contacts H3K9me2 islands in euchromatin
Published in PLoS genetics (23-03-2020)“…Membraneless pericentromeric heterochromatin (PCH) domains play vital roles in chromosome dynamics and genome stability. However, our current understanding of…”
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An assessment of histone-modification antibody quality
Published in Nature structural & molecular biology (01-01-2011)“…Antibodies are a primary tool to assess histone post-translational modifications. However, different antibodies and batches might vary in their ability to…”
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Exploring the role of CENP-A Ser18 phosphorylation in CIN and Tumorigenesis
Published in Cell cycle (Georgetown, Tex.) (17-12-2017)“…Chromosome instability (CIN) contributes to the development of many cancer. In this paper, we summarize our recent finding that a novel pathway by which FBW7…”
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Haplotypes spanning centromeric regions reveal persistence of large blocks of archaic DNA
Published in eLife (25-06-2019)“…Despite critical roles in chromosome segregation and disease, the repetitive structure and vast size of centromeres and their surrounding heterochromatic…”
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Comprehensive analysis of the chromatin landscape in Drosophila melanogaster
Published in Nature (London) (24-03-2011)“…Chromatin is composed of DNA and a variety of modified histones and non-histone proteins, which have an impact on cell differentiation, gene regulation and…”
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Epigenetic regulation of heterochromatic DNA stability
Published in Current opinion in genetics & development (01-04-2008)“…In this review we summarize recent studies that demonstrate the importance of epigenetic mechanisms for maintaining genome integrity, specifically with respect…”
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