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Sample GSM675440 Query DataSets for GSM675440
Status Public on Sep 30, 2011
Title m12_r2
Sample type SRA
 
Source name m12_r2
Organism Mus musculus
Characteristics strain: C57Bl/6
tissue type: Hematopoietic stem cell (HSC)
genotype/variation: wild type (Mx1-cre-;Dnmt3afl/fl)
gender: mixed donor HSC genders
Extracted molecule genomic DNA
Extraction protocol 50-100ng of genomic DNA digested with 10 Unit MspI (NEB, Ipswich, MA, USA) which cuts at CCGG sites methylation insensitively. Digested fragments were end-repaired, A-tailed and ligated to illumine adapters. End-repair and 3’ adenylation was performed in 50 μl reaction containing 4 mM 5′ methylated dCTP, 4 mM dGTP, 40 mM dATP, and 10U of 3′ to 5′ exo- Klenow DNA polymerase (NEB) and incubated at 30°C for 20 min followed by 20 min at 37°C. Adaptor ligation was performed in 50 μl reactions containing 300mM pre-methylated adapters and 1000 Unit T4 DNA polymerase and incubated at 16 °C overnight. Adaptor-ligated DNA was subjected to a size selection on a 3% NuSieve 3:1 agarose gel. DNA marker lanes were excised from the gel and stained with SYBR Gold (Invitrogen). 160-350 bp slices were excised from the unstained gel and purified using MinElute spin column (Qiagen, Valencia, CA, USA). Size-selected fragments were bisulphite-treated using the EpiTect Bisulphite Kit (Qiagen) with minor modifications by adding 5 more cycles (5 min 95 °C followed by 90 min at 60 °C). After bisulphite conversion, DNA was eluted in 40μl EB buffer and 0.8 μl DNA was used for analytical PCR reactions to determine the minimum number of PCR cycles required to obtain enough material for sequencing. Final PCR products were purified on MinElute columns (Qiagen) and assessed on 4–20% polyacrylamide Criterion TBE Gel (Bio-Rad, Hercules, CA, USA) and quantified using a Qubit fluorometer (Invitrogen).
 
Library strategy Bisulfite-Seq
Library source genomic
Library selection Reduced Representation
Instrument model Illumina Genome Analyzer II
 
Description m12_r2
secondary-transplanted HSCs
Mspi cut fragment at size 40~200bp.
Data processing Reads are mapped to genome (mm9) using RRBSMAP, then using a customized pipeline for downstream analysis.
 
Submission date Feb 15, 2011
Last update date May 15, 2019
Contact name deqiang sun
E-mail(s) dsun@tamu.edu
Phone (713) 677-7439
Organization name Texas A&M University
Street address 2121 W Holcombe Blvd
City Houston
State/province TX
ZIP/Postal code 77030
Country USA
 
Platform ID GPL9250
Series (1)
GSE27322 de novo DNA Methylation Balances Hematopoietic Stem Cell Self-Renewal and Differentiation
Relations
SRA SRX043482
BioSample SAMN00215970

Supplementary file Size Download File type/resource
GSM675440_RRBS_cpgMethylation_m12_r2.bed.gz 11.7 Mb (ftp)(http) BED
GSM675440_RRBS_rrbsmap_m12_r2.bam 932.8 Mb (ftp)(http) BAM
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

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