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Sample GSM3490829 Query DataSets for GSM3490829
Status Public on Jun 23, 2020
Title EC109_shScr
Sample type SRA
 
Source name human esophageal squamous carcinoma cells
Organism Homo sapiens
Characteristics cell line: EC109
cell type: esophageal squamous carcinoma cell line
shRNA: shScr
Treatment protocol Human ESCC cells were treated with specific shRNAs for silencing DAP3.
Growth protocol RPMI medium 10% FBS.
Extracted molecule total RNA
Extraction protocol Total RNA samples were extracted using Qiagen RNeasy Mini Kit.
Strand-specific cDNA library according to Illumina's TruSeq Stranded mRNA Library Prep Kit.
 
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina HiSeq 4000
 
Description Scramble shRNA treated
Strand-specific RNA-Seq
processed data file: dap3_kd_specific_editing_sites_in_escc.xlsx
Data processing Reads with adapters, unknown bases more than 10% and low quality bases (<=5) more than 50% were removed using SAOPnuke software.
Clean reads were then mapped to reference genome (hg19) using bwa (v0.7.15-r1140). PCR duplicates were removed with samtools (v1.4.1). The reads with mapping quality score less than 20 were discarded.
Variants were called with an in-house variant caller (Perl script) from the samtools mpileup data.
Candidate editing sites were filtered as the following: SNPs from different databases (1000 Genomes Project, NHLBI GO Exome Sequencing Project (http://evs.gs.washington.edu/EVS/), dbSNP v138) were removed, sites within the first 6 bases of the reads were excluded. For sites not located in Alu elements, the candidates within the 4 bases of a splice junction on the intronic side, and those residing in the homopolymeric regions and in the simple repeats were all removed. Candidate variants located in the reads that map to the non-unique regions of the genome by using BLAT were also excluded. Only A-to-G editing sites based on the strand information were retained.
To obtain high confidence editing events, the candidate sites were required to be supported by at least 20 reads of which at least 2 are edited and both shDAP3 knockdown treatments to result in at least 10% change in the editing level in the same direction.
Genome_build: hg19 (GRCh37)
Supplementary_files_format_and_content: dap3_kd_specific_editing_sites_in_escc.xlsx: Excel sheet includes DAP3 knockdown specific high confidence editing events in 2 different ESCC cell lines.
 
Submission date Nov 27, 2018
Last update date Jun 23, 2020
Contact name Polly Leilei Chen
E-mail(s) polly_chen@nus.edu.sg
Phone +6565168435
Organization name Cancer Science Institute of Singapore NUS
Department Department of Anatomy
Lab PLC Lab
Street address #12-01, MD6, 14 Medical Drive
City Singapore
ZIP/Postal code 117599
Country Singapore
 
Platform ID GPL20301
Series (1)
GSE123020 Suppression of adenosine-to-inosine (A-to-I) RNA editome by death associated protein 3 (DAP3) promotes cancer progression
Relations
BioSample SAMN10486411
SRA SRX5066985

Supplementary data files not provided
SRA Run SelectorHelp
Raw data are available in SRA
Processed data are available on Series record

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