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Sample GSM2183485 Query DataSets for GSM2183485
Status Public on Mar 08, 2017
Title PANC1_Cobalt1
Sample type SRA
Source name PANC1_Cobalt
Organism Homo sapiens
Characteristics cell line: PANC-1 pancreatic cancer cell line (ATCC, CRL-1469)
treatment: Cobalt
Treatment protocol EMT was induced by cobalt chloride (CoCl2, Sigma Aldrich). Cells were first starved for 24 hours in 1% fetal calf serum medium to avoid interference of growth factors in the serum and then stimulated with CoCl2 (200 µM) or vehicle for 48 hours. For EMT inhibition in Panc-1 cells, acriflavine (2.5 µM, Sigma-Aldrich) was added to the cell culture together with CoCl2 (200 µM) for 48h.
Growth protocol Panc-1 pancreatic cancer cells were obtained from ATCC (Rockville, MD, USA) and cultured in Gibco Modified Eagles Medium (Life Technologies) supplemented with 10% fetal calf serum, 2 mM L-glutamine, 100 U/ml Penicillin and 100 µg/ml Streptomycin.
Extracted molecule total RNA
Extraction protocol Rneasy kit (Qiagen)
RNA concentration and purity were determined spectrophotometrically using the Nanodrop ND-1000 (Nanodrop Technologies) and RNA integrity was assessed using a Bioanalyzer 2100 (Agilent). Per sample, an amount of 1ug total RNA was used as input. Using the Illumina TruSeq® Stranded mRNA Sample Prep Kit (protocol version 15031047 Rev.E) poly-A containing mRNA molecules were purified from the total RNA input using poly-T oligo-attached magnetic beads. In a reverse transcription reaction using random primers, RNA was converted into first strand cDNA and subsequently converted into double-stranded cDNA in a second strand cDNA synthesis reaction using the provided Second Strand Marking Master Mix. The cDNA fragments were extended with a single ‘A’ base to the 3’ ends of the blunt-ended cDNA fragments after which multiple indexing adapters were ligated introducing different barcodes for each sample. Finally an enrichment PCR of 10 cycles was carried out to enrich those DNA fragments that have adapter molecules on both ends and to amplify the amount of DNA in the library. Libraries were equimolarly pooled and sequenced using high 75 cycles NextSeq v2 kits on part of an Illumina NextSeq 500 flow-cell.
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina NextSeq 500
Description ASH04
Data processing Read Preprocessing. Low quality ends and adapter sequences were trimmed off from the Illumina reads with FastX 0.0.13 and Cutadapt 1.7.1. Using FastX 0.0.13 and ShortRead 1.16.3, we filtered subsequently small reads (length < 35 bp), polyA-reads (more than 90% of the bases equal A), ambiguous reads (containing N) and low quality reads (more than 50% of the bases < Q25). With Bowtie2 v2.2.4 we identified and removed reads that mapped to the spiked-in PhiX. The number of processed reads per sample then varied between 16,160,293 and 19,694,454.
Alignment. Processed reads were aligned with Tophat v2.0.13 to the reference genome of Homo sapiens (GRCh37.73), as downloaded from the Genome Reference Consortium. Default Tophat parameter settings were used, except for ‘library-type=fr-firststrand’, 'min-intron-length=50', 'max-intron-length=500,000', 'no-coverage-search', ‘no-mixed’ and 'read-realign-edit-dist=3'. Using Samtools 1.1, reads with a mapping quality smaller than 20 were removed from the alignments.
Counting. Transcript coordinates were extracted from the GRC reference annotation with Gffread from the Cufflinks v2.1.1 suite and merged to gene coordinates with mergeBed from the Bedtools v2.17.0 toolkit. The numbers of aligned reads per gene were summarized using featureCounts 1.4.6 with parameters ‘Q=0’, ‘s=2’, ’t=exon’ and ‘g=gene_id’.
Genome_build: GRCh37
Supplementary_files_format_and_content: One tab-delimited text file with raw read counts per gene and per sample. Gene IDs are Ensembl IDs.
Submission date Jun 01, 2016
Last update date May 15, 2019
Contact name Rekin's Janky
Organization name VIB
Department Nucleomics Core
Street address Herestraat 49 Box 816
City Leuven
ZIP/Postal code B-3000
Country Belgium
Platform ID GPL18573
Series (2)
GSE82104 Acriflavine inhibits the epithelial-to-mesenchymal transition in vitro in liver and pancreatic cancer cells (part of study on PANC1 cells treated with CoCl2)
GSE82299 Acriflavine inhibits the epithelial-to-mesenchymal transition in vitro in liver and pancreatic cancer cells
BioSample SAMN05194354
SRA SRX1813306

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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