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Sample GSM7073691 Query DataSets for GSM7073691
Status Public on Feb 21, 2024
Title E15.5_Ctrl_8640_A [Control_8640_A]
Sample type SRA
Source name E15.5 whole pancreas
Organism Mus musculus
Characteristics tissue: E15.5 whole pancreas
Treatment protocol Selected samples were treated with doxycycline (DOX) for 14-16hrs prior to collection. See SAMPLES section.
Growth protocol Inducible ESC lines were cultured and generated as previously described (Mazzoni et al., 2011). Inducible lines created in this study include wildtype NKX2.2 (iNKX2.2) and SD-mutant NKX2.2 (iSDmut), which harbors the same mutations as the Nkx2.2SDmut mice described above. iNKX2.2 and iSDmut ESC lines were differentiated into MNs as previously described (Wichterle et al., 2002). The first day of the differentiation protocol was referred to as Day 0. To induce expression of the transgenes in OLIG2+ pMN, DOX (1µg/ml) was added on late Day 3 for ~16hrs.
Extracted molecule total RNA
Extraction protocol RNA was extracted with the RNeasy Mini Kit (Qiagen, 74104).
RNA libraries were prepared for sequencing using Illumina Trueseq RNA Prep Kit.
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina NovaSeq 6000
Description E15.5_pancreas_RNAseq_readcounts.txt
Data processing RNA-seq files
Reads were mapped to the mouse genome (mm10) using the RNA-seq alignment algorithm in the STAR (Spliced Transcripts Alignment to a Reference) software package (version 2.3.1) (Dobin et al., 2013).
To estimate the relative abundances of transcripts, Cufflinks software was used (version 2.2.1) (Trapnell et al., 2013). FPKM values (Fragments Per Kilobase of exon per Million fragments mapped) were calculated per individual gene.
Differential RNA expression across cohorts was assessed using DESeq2 (Love et al., 2014) for E15.5 samples. All other samples were analyzed using EdgeR (version 3.20.9) and limma (version 3.34.9) software (Phipson et al., 2016; Ritchie et al., 2015; Robinson et al., 2010).
Assembly: mm10
Supplementary files format and content: raw readcount text file used as input into DESeq2/EdgeR/limma
Supplementary files format and content: text files of results of DESeq2/EdgeR/limma analysis
Supplementary files format and content: text file of abundance measurements (FPKM values)
ChIP-seq files
Peak calling of Nkx2.2 ChIP-seq carried out using the GEM algorithm (Guo et al., 2012).
Read-count intensity was obtained within +/- 500bp of all GEM identified peaks. Read counts of individual replicates were then normalized to their respective sequencing library size, and only loci above a given threshold in both replicates were used for subsequent analysis.
GEM peaks were then further processed as follows. If multiple peaks resided within 500bp of each other, they were merged into one peak using Bedtools (version 2.17.0) (Quinlan, 2010). The locus with the highest read density (+/- 100bp) was identified using Tidyverse (version 1.2.1) (Wickham H., 2019) and utilized as the center of the occupied region. Read counts for replicates were then obtained within +/- 500bp from the center of these merged peaks. The new 500bp readcount dataset was then imported into the EdgeR (version 3.20.9) and limma (version 3.34.9) software packages (Phipson et al., 2016; Ritchie et al., 2015; Robinson et al., 2010).
Final readcounts for all peaks were converted to counts per million (CPM), quantile-normalized, log2 transformed (logCPM), and then averaged. The average logCPM value for each peak was used as a measurement of the level of Nkx2.2 occupancy in that region.
Supplementary files format and content: peak text files generated by GEM software
Supplementary files format and content: raw readcount text files for peaks used as input into EdgeR/limma software and to make logCPM files
Supplementary files format and content: logCPM text files for all peaks used in EdgeR/limma analysis
Submission date Feb 28, 2023
Last update date Feb 21, 2024
Contact name Elena Abarinov
Organization name University of Colorado at Denver
Street address 1775 Aurora Ct
City Aurora
State/province Colorado
ZIP/Postal code 80045
Country USA
Platform ID GPL24247
Series (1)
GSE226345 Global profiling of Nkx2.2 SD-domain mutant pancreas during development and adulthood compared to transcriptional profiling of SD-domain mutant expressing neural progenitors.
BioSample SAMN33546516
SRA SRX19531368

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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