GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
Sample GSM2688531 Query DataSets for GSM2688531
Status Public on Jan 23, 2018
Title pTαKO DP #1 (new)
Sample type SRA
Source name sorted cells from thymus
Organism Mus musculus
Characteristics genotype/variation: pTA
age: 4-5 weeks
tissue: thymus
cell type: double-positive (DP) thymocyte
sorting strategy: TCRγδ- CD4+ CD8+
Extracted molecule total RNA
Extraction protocol Thymii were harvested from mice, and thymocytes were stained with appropriate antibodies for sorting. Following sorting in TRI reagent, RNA was extracted. RNA was assessed for quality using the Agilent Bioanalyzer RNA Pico chip. After the QC procedures, mRNA from eukaryotic organisms is enriched using oligo(dT) beads.
First, the mRNA is fragmented randomly by adding fragmentation buffer, then the cDNA is synthesized by using mRNA template and random hexamers primer, after which a custom second-strand synthesis buffer (Illumina) , dNTPs, RNase H and DNA polymerase I are added to initiate the second-strand synthesis. Second, after a series of terminal repair, A ligation and sequencing adaptor ligation, the double-stranded cDNA library is completed through size selection and PCR enrichment.
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina HiSeq 2500
Data processing RNA-sequencing reads were trimmed for removal of adapter sequences and low quality bases with Trimmomatic (version 0.32; adapters:2:20:7:1:true, leading:5, trailing:5, slidingwindow:4:10, minlen:21).
Reads were aligned with Tophat (version 2.0.9) to the mm10 transcriptome (Ensembl GRCm38), with remaining reads aligned to the mm10 genome.
Expression quantification was done using Cufflinks (version 2.2.0).
Log2 transformed FPKM (fragments per kilobase exon-model per million reads mapped) were used for downstream analyses. An FPKM gene expression matrix was generated for the samples.
Genes with low expression (FPKM< 1) in 50% of the samples, or with mean expression < 3  were filtered out as poorly expressed/covered genes.  Samples found with expression > 1 in <10,000 genes were also filtered out as bad quality samples. 
Genome_build: mm10
Supplementary_files_format_and_content: Microsoft Excel file with log2(FPKM) values and fold change in knockout mice compared to wild type samples
Submission date Jun 28, 2017
Last update date May 15, 2019
Contact name Yuan Zhuang
Phone 919-613-7824
Organization name Duke University
Department Immunology
Lab Zhuang lab
Street address 207 Research Drive
City Durham
State/province NC
ZIP/Postal code 27705
Country USA
Platform ID GPL17021
Series (2)
GSE89849 Id proteins suppress E2A-driven iNKT cell development prior to TCR selection
GSE100601 Id proteins suppress E2A-driven iNKT cell development prior to TCR selection [RNA-seq_new]
BioSample SAMN07287418
SRA SRX2964646

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

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