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Higher-order chromatin organization defines PR and PAX2 binding to regulate endometrial cancer cell gene expression (Hi-C)

ABSTRACT: Higher-order chromatin organization defines PR and PAX2 binding to regulate endometrial cancer cell gene expression (Hi-C)

PROVIDER: PRJNA579550 | ENA |

REPOSITORIES: ENA

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Higher-order chromatin organization defines PR and PAX2 binding to regulate endometrial cancer cell gene expression (Hi-C)

Project description:Estrogen (E2) and Progesterone (Pg) via their specific receptors, ER and PR respectively, are major determinants in the development and progression of endometrial malignancies. We have studied how E2 and the synthetic progestin R5020 affect genomic function in Ishikawa endometrial cancer cells. Using ChIPseq in cells exposed to the corresponding hormones, we identified cell specific binding sites for ER (ERbs) and PR (PRbs), mostly binding to independent sites and both adjacent to PAXbs. Long-range interactions (HiC) showed enrichment of PRbs and PAXbs, which we call progestin control regions (PgCRs) inside TADs with differentially progestin-regulated genes. Effects of hormone treatments on gene expression were detected by RNAseq. PgCRs correlate with open chromatin independently of hormonal stimuli. In summary, endometrial response to progestins in differentiated endometrial tumor cells results in part from binding of PR to compartmentalized PgCRs in hormone-independent open chromatin, which include binding of partner transcription factors, in particular PAX2.

2022-03-09 | GSE139397 | GEO

Higher-order chromatin organization defines PR and PAX2 binding to regulate endometrial cancer cell gene expression (ChIPseq PAX2)

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