NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Sample GSM4491257 Query DataSets for GSM4491257
Status Public on Apr 08, 2021
Title HF-2927_ChIP_H3K27ac.umi
Sample type SRA
 
Source name Glioblastoma neurosphere cell suspensions
Organism Homo sapiens
Characteristics source: Glioblastoma
ip antibody: H3K27ac (39133, Active Motif)
Growth protocol Tumor specimens were dissociated and cultured as neurospheres in DMEM/F12 medium (11330-032, Gibco) supplemented with N-2 supplement (17502-048, Gibco) and growth factors (EGF and FGF-basic). Cells with passages between 15 and 26 were used for experiments.
Extracted molecule genomic DNA
Extraction protocol 2 million cells were crosslinked and lysed in the same way as ChIA-PET. After lysis, the nuclei pellets were sonicated and immunoprecipitated with anti-RNApolII antibody (920102, Biolegend) or anti-H3K27ac antibody (39133, Active Motif).
4 ng of ChIPped DNA or input DNA were subjected to end-repair, A-tailing and adaptor ligation (IDT xGen Dual Index UMI Adapters) with the KAPA Hyper Prep Kit (KK8505, KAPA Biosystems). Adaptor-ligated DNA fragments were PCR amplified with the KAPA Library Amplification ReadyMix (KK2612, Kapa Biosystems) and sequenced on Illumina platform.
 
Library strategy ChIP-Seq
Library source genomic
Library selection ChIP
Instrument model Illumina NovaSeq 6000
 
Description ChIP-seq
Data processing The raw reads were quality trimmed using Trim Galore version 0.4.3 (options: --stringency 3 -q 30 -e .20 --length 15) and mapped to the hg19 genome using BWA 0.7.12 (command: mem). Reads with mapping quality greater than 30 were retained, de-duplicated. Only reads share the same mapping coordinate and UMI barcodes will be removed. The high quality non-redundant reads were used to call peaks with MACS2.1.0.20151222 (macs2 callpeak options: --nomodel --extsize 250 -B --SPMR -g hs --keep-dup all). Fold enrichment was computed with MACS2 bdgcmp and the output bedgraph file was converted to bigWig with bedGraphToBigWig.
Illumina RTA-1.18 software used for basecalling
Genome_build: hg19
 
Submission date Apr 22, 2020
Last update date Apr 08, 2021
Contact name Chia-Lin Wei
E-mail(s) [email protected]
Organization name University of Washington
Department The Northwest Genomics Center (NWGC)
Lab Genome Sciences
Street address 3720 15th Ave NE
City Seattle
State/province WA
ZIP/Postal code 98195-5065
Country USA
 
Platform ID GPL24676
Series (1)
GSE124769 Oncogenic extrachromosomal DNA functions as mobile enhancers to globally amplify chromosomal transcription
Relations
BioSample SAMN14671438
SRA SRX8158054

Supplementary file Size Download File type/resource
GSM4491257_HF-2927_H3K27ac.umi_peaks.narrowPeak.gz 926.2 Kb (ftp)(http) NARROWPEAK
GSM4491257_fe_HF-2927_H3K27ac.umi.bw 426.0 Mb (ftp)(http) BW
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