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Mus musculus

ABSTRACT: DNA double-strand breaks induced by high NaCl occur predominantly in gene deserts

PROVIDER: PRJNA146613 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR352281.fastq.gz	Fastqsanger.gz
	SRR352282.fastq.gz	Fastqsanger.gz
	SRR352283.fastq.gz	Fastqsanger.gz
	SRR352284.fastq.gz	Fastqsanger.gz
	SRR352285.fastq.gz	Fastqsanger.gz

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DNA double-strand breaks induced by high NaCl occur predominantly in gene deserts

Project description:High concentration of NaCl increases DNA breaks both in cell culture and in vivo. The breaks remain elevated as long as NaCl concentration remains high and are rapidly repaired when the concentration is lowered. Repair of the breaks after NaCl is reduced is accompanied by formation of foci containing phosphorylated H2AX (γH2AX), which occurs around DNA double-strand breaks and contributes to their repair. By chromatin immunoprecipitation using anti-γH2AX antibody, followed by massive parallel sequencing (ChIP-Seq), we find that during repair of double–strand breaks induced by high NaCl, γH2AX is predominantly localized to regions of the genome devoid of genes (“gene deserts”), indicating that the high NaCl-induced double-strand breaks are located there. Localization to gene deserts helps explain why the DNA breaks are less harmful than are the random breaks induced by genotoxic agents such as UV radiation, ionizing radiation and oxidants. We propose that the universal presence of NaCl around animal cells has directly influenced the evolution of the structure of their genomes.

2011-11-21 | GSE32882 | GEO

DNA double-strand breaks induced by high NaCl occur predominantly in gene deserts

Project description:High concentration of NaCl increases DNA breaks both in cell culture and in vivo. The breaks remain elevated as long as NaCl concentration remains high and are rapidly repaired when the concentration is lowered. Repair of the breaks after NaCl is reduced is accompanied by formation of foci containing phosphorylated H2AX (M-NM-3H2AX), which occurs around DNA double-strand breaks and contributes to their repair. By chromatin immunoprecipitation using anti-M-NM-3H2AX antibody, followed by massive parallel sequencing (ChIP-Seq), we find that during repair of doubleM-bM-^@M-^Sstrand breaks induced by high NaCl, M-NM-3H2AX is predominantly localized to regions of the genome devoid of genes (M-bM-^@M-^\gene desertsM-bM-^@M-^]), indicating that the high NaCl-induced double-strand breaks are located there. Localization to gene deserts helps explain why the DNA breaks are less harmful than are the random breaks induced by genotoxic agents such as UV radiation, ionizing radiation and oxidants. We propose that the universal presence of NaCl around animal cells has directly influenced the evolution of the structure of their genomes. ChIP-Seq experiment to find locations of M-NM-3H2AX in mouse genome

2011-11-21 | E-GEOD-32882 | biostudies-arrayexpress

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Project description:Chronic liver inflammation-induced double strand DNA breaks enhance hepatocarcinogenesis

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Long Neural Genes Harbor Recurrent DNA Break Clusters in Neural Stem/Progenitor Cells

Project description:Repair of DNA double-strand breaks (DSBs) by non-homologous end-joining is critical for neural development, and brain cells frequently contain somatic genomic variations that might involve DSB intermediates. We now use an unbiased, high-throughput approach to identify genomic regions harboring recurrent DSBs in primary neural stem/progenitor cells (NSPCs). We identify 27 recurrent DSB clusters (RDCs) and, remarkably, all occur within gene bodies. Most of these NSPC RDCs were detected only upon mild, aphidicolin-induced replication stress, providing a nucleotide-resolution view of replication-associated genomic fragile sites. The vast majority of RDCs occur in long, transcribed, and late-replicating genes. Moreover, almost 90% of identified RDC-containing genes are involved in synapse function and/or neural cell adhesion, with a substantial fraction also implicated in tumor suppression and/or mental disorders. Our characterization of NSPC RDCs reveals a basis of gene fragility and suggests potential impacts of DNA breaks on neurodevelopment and neural functions. We performed high-throughput, genome-wide, translocation sequencing (HTGTS) and GRO-seq in primary mouse neural stem/progenitor cells of the indicated genotypes.

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Project description:Multiplexed programmable DNA integration without double-strand breaks

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Nucleosomes protect DNA from irradiation-induced double strand breaks in living cells

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In depth mapping of DNA-PKcs and ATM kinase signaling responses to double strand breaks.

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2024-10-17 | PXD042258 | Pride

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