GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
Sample GSM1290244 Query DataSets for GSM1290244
Status Public on Dec 11, 2015
Title HPT.BAHD1.ChIPSeq.R2.b.ChIP
Sample type SRA
Source name HEK293 cells
Organism Homo sapiens
Characteristics cell type: embryonic semi-differentiated kidney cells
sequencing time: 3
fraction: ChIP
antibody: anti-protein C mouse monoclonal antibody, clone HPC4 (11814508001, Roche)
Treatment protocol To induce the production of the HPT-BAHD1 fusion, tetracycline was added to cell culture media 30 h before cell recovery at a final concentration of 11 µg/ml. Tetracyclin was also added to the cultures of the control HEK293-HPT-blue cells.
Growth protocol Stable HEK293-HPT-BAHD1 and control HEK293-HPT-blue cells were generated as described (Lebreton et al. Science 2011, PMID: 21252314). Stable pool of transfectants having undergone integration of HPT-expressing plasmids at the single FRT locus were grown under 5% CO2 atmosphere, in DMEM supplemented with 10% (v/v) Fetal Calf Serum (FCS) and Penicillin/Streptomycin (0.1 mg/ml each), 100 mg/ml hygromycin to maintain the integration and 15 μg/ml of Blasticidin in order to select for the maintenance of Tet repressor expression. Cellular amplification was performed in 2-liter spinner flasks (3 flasks containing 1L of the same medium per condition and replicate) as thoroughly described (Derivery et al. Methods Enzymol. 2010, PMID: 21036256) for one week.
Extracted molecule genomic DNA
Extraction protocol Preparation of solubilized chromatin fractions from these cells (Fritsch et al. Mol. Cell 2010, PMID: 20129054) and tandem affinity purification (Lebreton et al. Science 2011, PMID: 21252314) were performed as previously described. Only the eluates from the first affinity column were used for DNA extraction. DNA was purified by two extractions with equal volumes of phenol:chloroform:isoamy lalcohol (25:24:1, pH=8), starting from 10 µL of the input samples diluted in 200 µL water, or 200 µL of eluates. Phenol was eliminated with one extraction with chloroform, then DNA was precipitated by addition of 900 µL of ethanol, 100 µL of ammonium acetate 7.5 M and 0.2 µL of glycogen (20 µg/µL) to each aqueous phase, incubation at -80°C for 30 min and centrifugation at 4°C, 20,000 ´ g for 15 min. The pellet was washed once in 100 µL of ethanol, then resuspended in 50 µL of pure water for inputs, 25 µL for eluates. 2 independent experiments were performed (R1 and R2)
The library construction was performed by Fasteris according to the Illumina guidelines, with the following steps: 3’ A addition; Ligation of adapters; Gel purification to isolate fragments of specified inserts size; PCR amplification to generate the DNA Colonies Template Library, library purification; Library quantification and dilution at 10 nM. Library Quality Control, done by titration run on the HiSeq. Independent libraries were produced for R1 and R2. The DNA Colony Template library was sequenced as single reads of 50 bp. Sequencing was multiplexed at 3 libraries per channel. For the HPT-BAHD1 ChIP sample, the R2 library was sequenced twice (R2.a and R2.b).
Library strategy ChIP-Seq
Library source genomic
Library selection ChIP
Instrument model Illumina HiSeq 2000
Description DNA occupancy of BAHD1
Data processing Basecalls performed using CASAVA version 1.8
reads were filtered with custom Python scripts
ChIP-seq reads were aligned to the hg19 genome assembly using Bowtie with default parameters, clonal reads were removed
enriched regions were selected with CCAT (v3.0) using individual replicates of ChIP vs Input with the following parameters: fragmentSize =150, slidingWinSize= 1000, movingStep=50, isStrandSensitiveMode = 0, minCount =4 (R1), 8 (R2), outputNum =10000, randomSeed = 123456, minScore =5.0 (R1) (fold change criteria) bootstrapPass =50.
reads were assigned to genomic windows of 400 bp using Repitools
counts were normalized with edgeR per effective library size
regions selected with CCAT were used to subset the table of library size normalized counts per genomic window
a generalized linear model was run with edgeR with time and IP as confounding factors
Genome_build: hg19 (female)
Supplementary_files_format_and_content: bedGraph files, library size normalized counts per 400 bp genomic window
Submission date Dec 16, 2013
Last update date May 15, 2019
Contact name Helene Bierne
Phone 33134652289
Organization name INRA
Department Micalis Institute
Street address Domaine de Vilvert, bat 442, INRA Micalis
City Jouy-en-Josas
ZIP/Postal code 78350
Country France
Platform ID GPL11154
Series (2)
GSE51868 HEK293 cells (HEK293-CT) and HEK293 cells stably over-expressing the BAHD1 gene (HEK-BAHD1)
GSE53372 Chromatin immunoprecipitation-sequencing of HEK293 cells (HEK293-HPT-blue) and HEK293 cells stably over-expressing the BAHD1 gene (HEK293-HPT-BAHD1)
BioSample SAMN02444973
SRA SRX392835

Supplementary file Size Download File type/resource
GSM1290244_HPT.BAHD1.ChIP.R2.b.library.norm.bedGraph.gz 77.7 Mb (ftp)(http) BEDGRAPH
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap