Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA214557 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:The spatial organization of genes in the interphase nucleus plays an important role in establishment and regulation of gene expression. The circadian expressed and clock controlled genes represent about 10% of the transcripts in the mammalian cells, however the role of genome topology in the expression of genes in a circadian manner remains to be elucidated. In this study we investigated the characteristics and dynamics of the genomic loci that contact the clock controlled gene Dbp during the circadian cycle. To do so, we combined genome-wide interaction profiling by chromosome conformation capture-on-chip (4C) technology with analyses of circadian gene expression in synchronized mouse embryonic fibroblasts (MEFs). This approach allowed us to elucidate the three-dimensional organization of the genome during the circadian cycle around the clock controlled gene Dbp, paralleling its circadian expression. We found that the Dbp genomic environment remains largely similar during the circadian cycle. However, specific DNA regions change their frequency of interaction with Dbp as the circadian cycle progresses, delineating a Dbp circadian interactome. These specific changes are not present in Bmal1-/- MEF, suggesting that the clock machinery is implicated in shaping the genomic landscape around the Dbp locus. The Dbp interactome is enriched in DNA elements related to the clock system (E boxes). We found a spatial clustering of functionally related genes. The Dbp circadian interactome contains a subset of circadian genes whose expression which closely parallel that for Dbp. Taken together, our results indicate that the Dbp subnuclear environment is organized to privilege the clock directed gene expression program. Wild type mouse embryonic fibroblasts at the circadian times (CT) 22, 26, 30, 34 and 46. Bmal1-/- mouse embrionic fibroblasts at CT 22 and CT 34 Biological replicate using an independent line of wild type mouse embrionic fibroblast at CT 22 and CT 34 This submission represents the chromosome conformation capture-on-chip component of the overall study
2013-08-08 | E-GEOD-49582 | biostudies-arrayexpress
Project description:Identification of cyclical expressed coding and non-coding genes during the circadian rhythm in NIH3T3 cells. NIH3T3 cells were synchronized for their circadian rhythm and RNA sequencing were performed at several time points along the rhythm. This data was used to identify cyclical expressed genes as well as long intergenic non-coding RNAs. NIH3T3 cells were synchronized with 100 nM Dexamethasone for 2 hours, then medium was changed to normal culture medium (0h). Every 4 hours cells were harvested, RNA isolated and RNAseq performed.
2015-12-31 | E-GEOD-66243 | biostudies-arrayexpress
Project description:The spatial organization of genes in the interphase nucleus plays an important role in establishment and regulation of gene expression. The circadian expressed and clock controlled genes represent about 10% of the transcripts in the mammalian cells, however the role of genome topology in the expression of genes in a circadian manner remains to be elucidated. In this study we investigated the characteristics and dynamics of the genomic loci that contact the clock controlled gene Dbp during the circadian cycle. To do so, we combined genome-wide interaction profiling by chromosome conformation capture-on-chip (4C) technology with analyses of circadian gene expression in synchronized mouse embryonic fibroblasts (MEFs). This approach allowed us to elucidate the three-dimensional organization of the genome during the circadian cycle around the clock controlled gene Dbp, paralleling its circadian expression. We found that the Dbp genomic environment remains largely similar during the circadian cycle. However, specific DNA regions change their frequency of interaction with Dbp as the circadian cycle progresses, delineating a Dbp circadian interactome. These specific changes are not present in Bmal1-/- MEF, suggesting that the clock machinery is implicated in shaping the genomic landscape around the Dbp locus. The Dbp interactome is enriched in DNA elements related to the clock system (E boxes). We found a spatial clustering of functionally related genes. The Dbp circadian interactome contains a subset of circadian genes whose expression closely parallels that for Dbp. Taken together, our results indicate that the Dbp subnuclear environment is organized to privilege the clock directed gene expression program.
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Project description:Chromosome conformation capture-on-chip of glucocorticoid receptor-responsive loci in mouse cells
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2021-05-04 | GSE155160 | GEO
Project description:Circadian gene expression is essential for organisms to adjust cellular responses and anticipate daily changes in the environment. In addition to its physiological importance, the clock circuit represents an ideal, temporally resolved, system to study transcription regulation. Here, we analysed changes in spatial mouse liver chromatin conformation using genome-wide and promoter-capture Hi-C alongside daily oscillations in gene transcription in mouse liver. We found circadian topologically associated domains switched assignments to the transcriptionally active, open chromatin compartment and the inactive compartment at different hours of the day while their boundaries stably maintain their structure over time. Individual circadian gene promoters displayed maximal chromatin contacts at times of peak transcriptional output and the expression of circadian genes and contacted transcribed regulatory elements, or other circadian genes, was phase-coherent. Anchor sites of promoter chromatin loops were enriched in binding sites for liver nuclear receptors and transcription factors, some exclusively present in either rhythmic or stable contacts. The circadian 3D chromatin maps provided here identify the scales of chromatin conformation that parallel oscillatory gene expression and protein factors specifically associated with circadian or stable chromatin configurations.
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Project description:Circadian gene expression is essential for organisms to adjust cellular responses and anticipate daily changes in the environment. In addition to its physiological importance, the clock circuit represents an ideal, temporally resolved, system to study transcription regulation. Here, we analysed changes in spatial mouse liver chromatin conformation using genome-wide and promoter-capture Hi-C alongside daily oscillations in gene transcription in mouse liver. We found circadian topologically associated domains switched assignments to the transcriptionally active, open chromatin compartment and the inactive compartment at different hours of the day while their boundaries stably maintain their structure over time. Individual circadian gene promoters displayed maximal chromatin contacts at times of peak transcriptional output and the expression of circadian genes and contacted transcribed regulatory elements, or other circadian genes, was phase-coherent. Anchor sites of promoter chromatin loops were enriched in binding sites for liver nuclear receptors and transcription factors, some exclusively present in either rhythmic or stable contacts. The circadian 3D chromatin maps provided here identify the scales of chromatin conformation that parallel oscillatory gene expression and protein factors specifically associated with circadian or stable chromatin configurations.
2021-05-04 | GSE155153 | GEO
Project description:Circadian gene expression is essential for organisms to adjust cellular responses and anticipate daily changes in the environment. In addition to its physiological importance, the clock circuit represents an ideal, temporally resolved, system to study transcription regulation. Here, we analysed changes in spatial mouse liver chromatin conformation using genome-wide and promoter-capture Hi-C alongside daily oscillations in gene transcription in mouse liver. We found circadian topologically associated domains switched assignments to the transcriptionally active, open chromatin compartment and the inactive compartment at different hours of the day while their boundaries stably maintain their structure over time. Individual circadian gene promoters displayed maximal chromatin contacts at times of peak transcriptional output and the expression of circadian genes and contacted transcribed regulatory elements, or other circadian genes, was phase-coherent. Anchor sites of promoter chromatin loops were enriched in binding sites for liver nuclear receptors and transcription factors, some exclusively present in either rhythmic or stable contacts. The circadian 3D chromatin maps provided here identify the scales of chromatin conformation that parallel oscillatory gene expression and protein factors specifically associated with circadian or stable chromatin configurations.
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Project description:Genome-wide chromosome conformation capture (Hi-C) and promoter-capture Hi-C (CHi-C) were performed during epidermal differentiation. These data indicate that dynamic and constitutive enhancer-promoter contacts combine to control gene induction during differentiation and that chromosome conformation enables discovery of new TFs with distinct roles in this process.
2017-06-28 | GSE95098 | GEO
Project description:Genome-wide chromosome conformation capture (Hi-C) and promoter-capture Hi-C (CHi-C) were performed during epidermal differentiation. These data indicate that dynamic and constitutive enhancer-promoter contacts combine to control gene induction during differentiation and that chromosome conformation enables discovery of new TFs with distinct roles in this process.
2017-06-28 | GSE84660 | GEO