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H3K4me3 and H3K27me3 ChIP-seq profiling in MCF7 cell lines under hypoxia and reoxygenation

ABSTRACT: Purpose: Study hypoxia and reoxygenation induced changes in genome-wide H3K4me3 and H3K27me3 occupancy Methods: Using the MCF7 breast epithelial adenocarcinoma cell line as a model, we studied epigenomic reprogramming as a function of fluctuating oxygen tension. To this end, we combined chromatin-immunoprecipitation and deep-sequencing analysis to identify H3K4me3-marks and H3K27me3-marks in MCF7 cells subjected to changes in oxygenation (i.e. acute hypoxia, chronic hypoxia, reoxygenation). Results: H3K4me3 and H3K27me3-marks showed a rapid global increase at specific sites throughout the genome under hypoxia, both genic and inter-genic, that was partly restored upon reoxygenation. Conclusions: Our data show that oxygen availability dynamically regulates the epigenetic state of the genome.

ORGANISM(S): Homo sapiens

PROVIDER: GSE71030 | GEO | 2016/11/01

SECONDARY ACCESSION(S): PRJNA290150

REPOSITORIES: GEO

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H3K27me3 ChIP-seq profiling in MCF7 cell lines under hypoxia

Project description:Purpose: Study hypoxia induced changes in genome-wide H3K27me3 occupancy Methods: Using the MCF7 breast epithelial adenocarcinoma cell line as a model, we studied epigenomic reprogramming as a function of fluctuating oxygen tension. To this end, we combined chromatin-immunoprecipitation and deep-sequencing analysis to identify H3K27me3-marks in MCF7 cells subjected to changes in oxygenation (i.e. acute hypoxia, chronic hypoxia). Results: H3K27me3-marks showed a rapid global increase at specific sites throughout the genome under hypoxia, both genic and inter-genic. Conclusions: Our data show that oxygen availability dynamically regulates the epigenetic state of the genome. Genome-wide H3K27me3-mark profiles were generated by combining ChIP analysis with deep sequencing using Illumina GAIIx.

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