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| Status |
Public on Oct 19, 2015 |
| Title |
ProB_H3K27ac_rep2 |
| Sample type |
SRA |
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| Source name |
Pro B
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| Organism |
Mus musculus |
| Characteristics |
strain: C57BL/6
antibody: H3K27ac (Cell Signaling 8173)
cell type: Pro B
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| Growth protocol |
NUP98–HOXB4-HSC (abbreviated HSC) correspond to BM cells that were transduced with retrovirus encoding an NUP98–HOXB4 fusion protein and cultured in SCF/IL6 containing media. These cells have stem-cell properties and are able to reconstitute all hematopoietic compartments in sublethally irradiated Rag2-deficient mice, including long term HSCs (LT-HSC), short-term HSC (ST-HSC) and all hematopoietic cells. Pro B cells were sorted from the bone marrow (BM) with the following markers ( ckit+, B220+, CD19-, CD25-, IgM-). Pro B cells were expanded in the presence of IL7 and OP9 feeder cells for 1 week. Mature B cells were sorted from the spleen as CD19 positive cells using MACS kit and CD19 beads (#130-052-201). Mature B cells were cultured in the presence of LPS for 2 days.
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| Extracted molecule |
genomic DNA |
| Extraction protocol |
Cells were fixed with 1% formaldehyde in PBS (20 ml vol./ ~1 × 108 cells) for 10 min, followed by quenching with 2.5 M glycine for 5 min. Cells were lysed for 10 min in 1 ml lysis buffer A (10 mM HEPES, pH 8.0, 10 mM EDTA, 0.5 mM EGTA, 0.25 % Triton X-100 + PI). The supernatant was discarded and the nuclei were incubated for 10 min in buffer B (10 mM HEPES, pH 8.0, 200 mM NaCl, 1 mM EDTA, 0.5 mM EGTA, 0.01 % Triton X-100 + PI). Next, the nuclei were suspended in chromatin lysis buffer (50 mM Tris-HCl, pH 8.0, 10 mM EDTA, 0.5 % SDS) for 30 min. Sonication was performed using Bioruptor Next Gen (Diagenode) at high output intensity for 25 cycles (30on/30off). Finally the collected supernatant was diluted 5x with chromatin dilution buffer (250 mM NaCl, 1.67 % Triton X-100). The chromatin (25-50 µg) was subjected to the IP with the above mentioned antibodies and incubated overnight. The IPs were incubated with either protein A or G coupled to magnetic beads for 1 h. The beads were washed with the following buffers, twice with low salt (0.10% SDS, 1% Triton X-100, 2 mM EDTA, 20 mM Tris pH 8.0, 15 mM NaCl), high salt (0.10% SDS, 1% Triton X-100, 2 mM EDTA, 20 mM Tris pH 8.0, 50 mM NaCl), LiCl (250 mM LiCl, 1 M EDTA, 10 mM Tris pH8.0, 1% NP-40, 1% Na Deoxychholate) and once with TE (20 mM Tris-HCl, pH8.9, 2 mM EDTA). The protein-DNA complexes were eluted from the beads with 500 µl elution buffer (10mM Tris-HCl, pH7.5, 1mM EDTA, 1% SDS, 100 mM NaHCO3) and reverse cross-linked overnight at 65°C with Proteinase K. ChIPed DNA was isolated by phenol/ chloroform extraction and ethanol precipitated. 10ng of ChIPed DNA were processed for Illumina high-seq analyzer according to the manufacturer’s protocol.
Sequencing libraries were prepared using bar-coded adapters following standard Illumina library preparation protocol. Four samples carrying different barcodes were pooled at equal molar ratios and subjected for sequencing on Illumina HiSeq 2000 sequencer according to Illumina standards.
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| Library strategy |
ChIP-Seq |
| Library source |
genomic |
| Library selection |
ChIP |
| Instrument model |
Illumina HiSeq 2000 |
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| Data processing |
Sequencing Reads were mapped to the mouse genome (mm9) using qAlign function, which internally uses Bowtie (http://bowtie-bio.sourceforge.net/ ) from the QuasR R package (http://www.bioconductor.org) with default settings. Alignments were shifted by 60 bases, corresponding to an estimated fragment length of 120 bp
library-size normalized wig files were generated with the qExportWig function (default parameters) from QuasR package
Genome_build: mm9
Supplementary_files_format_and_content: wig
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| Submission date |
Sep 04, 2015 |
| Last update date |
May 15, 2019 |
| Contact name |
Mohamed-Amin choukrallah |
| E-mail(s) |
mohamed-Amin.choukrallah@fmi.ch
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| Organization name |
FMI
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| Department |
Epigenetic
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| Street address |
Maulbeerstrasse 66
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| City |
Basel |
| ZIP/Postal code |
4058 |
| Country |
Switzerland |
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| Platform ID |
GPL13112 |
| Series (1) |
| GSE60005 |
Genome-wide maps of chromatin state in HSC, Pro B and mature B cells |
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| Relations |
| BioSample |
SAMN04032751 |
| SRA |
SRX1184113 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSM1869131_ProB_H3K27ac_rep2.wig.gz |
6.2 Mb |
(ftp)(http) |
WIG |
SRA Run Selector |
| Processed data provided as supplementary file |
| Raw data are available in SRA |
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