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GR and Pol II interactions with regulatory elements in response to ultradian (pulsed) hormone stimulation [ChIP-seq]

ABSTRACT: We report changes in GR and Pol II binding profiles genome-wide upon treatment with corticosterone (Cort) for 20 minutes, treatment with Cort for 20 minutes followed by hormone withdrawal for 40 minutes, 60 minutes continuous stimulation with Cort, and 60 minutes continuous stimulation with Dexamethasone (Dex). We examine GR binding upon following treatments: 0' Cort, 20' Cort, 60' Cort Pulsed, 60' Cort Constant; Pol II binding upon following treatments: 0' Cort, 20' Cort, 60' Cort Pulsed, 60' Cort Constant, 60' Dex Constant; Pol II binding upon Mock treatments simulating 0' Cort, 20' Cort, 60' Cort Pulsed, 60' Cort Constant; CTCF binding profile of untreated cells.

ORGANISM(S): Mus musculus

SUBMITTER: Songjoon Baek 

PROVIDER: E-GEOD-61234 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Although physiological steroid levels are often pulsatile (ultradian), the genomic effects of this pulsatility are poorly understood. By utilizing glucocorticoid receptor (GR) signaling as a model system, we uncovered striking spatiotemporal relationships between receptor loading, lifetimes of the DNase I hypersensitivity sites (DHSs), long-range interactions, and gene regulation. We found that hormone-induced DHSs were enriched within ± 50 kb of GR-responsive genes and displayed a broad spectru  ...[more]

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