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RNA-seq of the human breast cancer ERα-suppressed MCF-7(MCF-7/SP10+) cells and of their internal control MCF-7 (MCF-7/C) cells

ABSTRACT: RNA-seq of the human breast cancer ERα-suppressed MCF-7(MCF-7/SP10+) cells and of their internal control MCF-7 (MCF-7/C) cells

PROVIDER: PRJEB19767 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR1862940.fastq.gz	Fastqsanger.gz
	ERR1862941.fastq.gz	Fastqsanger.gz
	ERR1862942.fastq.gz	Fastqsanger.gz
	ERR1862937.fastq.gz	Fastqsanger.gz
	ERR1862938.fastq.gz	Fastqsanger.gz

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Project description:We report the genome-wide mapping of time-series ChIP-seq data sets of human ERα cell lines (MCF-7). The 4 time points cover 0, 1, 4 and 24 hours, respectively. MCF7 cells were maintained in a hormone-free medium (phenol red–free MEM with 2 mmol/L L-glutamine, 0.1 mmol/L nonessential amino acids, 50 units/mL penicillin, 50 Ag/mL streptomycin, 6 ng/mL insulin, and 10% charcoal-stripped FBS) for three days. MCF7 cells were treated with DMSO (as 0 hour time point) or E2 (108 mol/L) for 1, 4 and 24 hours. 5 x 107 cells were cross-linked with 1% formaldehyde for 10 min, at which point 0.125 M glycine was used to stop the crosslinking. In brief, after crosslinking, cells were treated by lysis buffers and sonicated to fragment the chromatin to a size range of 500bp-1kb. Chromatin fragments were then immunoprecipitated with 10ug of antibody/magnetic beads. The antibodies against ERα were purchased from Santa Cruz Biotechnology (Santa Cruz, sc-8005 X). After immunoprecipitation, washing, and elution, ChIP DNA was purified by phenol:chloroform:isoamyl alcohol and solubilized in 70 μl of water. The ChIP DNA sample was run in 12% PAGE and the 100-300bp DNA fraction was excised and eluted from the gel slice overnight at 4 °C in 300 μl of elution buffer (5:1, LoTE buffer (3 mM Tris-HCl, pH 7.5, 0.2 mM EDTA)-7.5 M ammonium acetate) and was purified using a QIAquick purification kit (Qiagen, Cat#28104). The library was constructed using Illumina genomic DNA prep kit by following its protocol (Illumina, cat# FC-102-1002), clusters were generated on the Illumina cluster station (Illumina, cat# FC-103-1002), DNA samples (20 nM per sample) quantified by an Agilent Bioanalyzer, were loaded onto Illumina Genome Analyzer IIx (GAIIx) for sequencing according to the manufacturer’s protocol. Reads generated from the Illumina GAIIx pipeline were aligned to the Human Genome Assembly (NCBI build 36.1/hg18) using ELAND algorithm. Experiments on human ERα breat cancer cell lines (MCF-7) in 4 time points.

Dataset Information

RNA-seq of the human breast cancer ERα-suppressed MCF-7(MCF-7/SP10+) cells and of their internal control MCF-7 (MCF-7/C) cells

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