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Sample GSM1957805 Query DataSets for GSM1957805
Status Public on Dec 07, 2015
Title fetal3_G9_fetal_13wpc
Sample type SRA
 
Source name fetal human cortex 2
Organism Homo sapiens
Characteristics Stage: 13 weeks post-conception
tissue: Fetal neocortex
Treatment protocol Fetal cortices were digested with papain (Miltenyi Biotec, 1ml) for 15 min at 37°C on a rotating wheel, followed by addition of a papain inhibitor. Dissociated cells were filtered through 40, 30, and 20 μm diameter strainers to create a single cell suspension.
Growth protocol Fetuses were 12 to 13 wpc as assessed by ultrasound measurements of crown-rump length and other standard criteria of developmental stage determination.
Extracted molecule total RNA
Extraction protocol Cells were loaded into the Fluidigm C1 microfluidic platform, where single cells were captured. Lysis of single cells, reverse-transcription of mRNA into cDNA as well as preamplification of cDNA occured within the microfluidic device using reagents provided by Fluidigm as well as the SMARTer Ultra Low RNA kit for Illumina (Clontech). External RNA spike-in transcripts (ERCC spike-in Mix, Ambion) were added to all single cell lysis reactions at a dilution of 1:40,000.
Libraries were prepared using Illumina Nextera XT kit per illumina's protocols.
 
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina HiSeq 2500
 
Description Single cell G9 from experiment fetal neocortex at 13 wpc
fetal3_G9_fetal_13wpc
Data processing "freeIbis" was used as an efficient basecaller with calibrated quality scores for Illumina sequencers. (Bioinformatics. 2013 May 1;29(9):1208-9. doi: 10.1093/bioinformatics/btt117. Epub 2013 Mar 6.)
"leeHom" was used to trim adapters and merge Illumina sequencing reads. (Nucleic Acids Res. 2014 Oct;42(18):e141. doi: 10.1093/nar/gku699. Epub 2014 Aug 6.)
"deML" was used for robust demultiplexing of Illumina sequences using a likelihood-based approach. (Bioinformatics. 2015 Mar 1;31(5):770-2. doi: 10.1093/bioinformatics/btu719. Epub 2014 Oct 30.)
Reads were aligned against the human genome (build GRCh38.77 from ENSEMBLE) using TopHat v2.0.14. The genome was indexed using Bowtie v2.2.6
Fragments Per Kilobase of transcript Per Million mapped reads (FPKM) values were computed using cufflinks v2.2.1
Genome_build: GRCh38
Supplementary_files_format_and_content: Master data frame including sample name, gene ID, and FPKM values for each single cell.
 
Submission date Nov 30, 2015
Last update date May 15, 2019
Contact name Gray Camp
E-mail(s) graycamp@gmail.com
Organization name Max Planck Institute for Evolutionary Anthropology
Department Evolutionary Genetics
Street address Deutscher Pl. 6
City Leipzig
ZIP/Postal code 04103
Country Germany
 
Platform ID GPL16791
Series (1)
GSE75140 Human cerebral organoids recapitulate gene expression programs of fetal neocortex development.
Relations
BioSample SAMN04304305
SRA SRX1457270

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

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