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| Status |
Public on Nov 18, 2019 |
| Title |
GBM4_1_7 |
| Sample type |
SRA |
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| Source name |
Human brain surgery sample
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| Organism |
Homo sapiens |
| Characteristics |
tissue: Brain
diagnosis: Glioblastoma multiforme
region: Temporal lobe
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| Biomaterial provider |
University clinic Freiburg, Department of Neurosurgery
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| Extracted molecule |
total RNA |
| Extraction protocol |
Fresh tissue was dissected by removing the meninges. Single-cell suspesions were generated with a dounce potter followed by passing through a cell strainer. Myelin was removed using percoll gradient centrifugation.
As described in mCEL-Seq2 protocol (Hashimshony et al. 2016 and Herman et al. 2018)
Adapted from TruSeq Small RNA Library Preparation Protocol
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| Library strategy |
RNA-Seq |
| Library source |
transcriptomic |
| Library selection |
cDNA |
| Instrument model |
Illumina HiSeq 3000 |
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| Description |
library of 192 cells
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| Data processing |
For image aquisition, intensity extraction and basecalling HiSeq Control Software 2.0.2, RTA 2.4.11 / Recipe Fragment 2.0.0.2 was used. Conversion of bcl2fastq files was performed using bcl2fastq 2.17.1.14
Paired end reads were aligned to the transcriptome using bwa (version 0.6.2-r126) with default parameters. The transcriptome contained all gene models based on the mouse ENCODE VM9 release downloaded from the UCSC genome browser comprising 57,207 isoforms derived from 57,207 gene loci with 57,114 isoforms mapping to fully annotated chromosomes (1 to 19, X, Y, M). All isoforms of the same gene were merged to a single gene locus. Furthermore, gene loci overlapping by >75% were merged to larger gene groups. This procedure resulted in 34,111 gene groups.
The right mate of each read pair was mapped to the ensemble of all gene loci and to the set of 92 ERCC spike-ins in sense direction. Reads mapping to multiple loci were discarded. The left read contains the barcode information: the first six bases correspond to the cell specific barcode followed by six bases representing the unique molecular identifier (UMI). The remainder of the left read contains a poly(T) stretch. The left read was not used for quantification. For each cell barcode, the number of UMIs per transcript was counted and aggregated across all transcripts derived from the same gene locus.
Based on binomial statistics, the number of observed UMIs was converted into transcript counts (Gruen et al., 2014).
Genome_build: ENCODE VM9
Supplementary_files_format_and_content: CSV files, columns represent each cell barcode (total barcodes used = 192), rows represent the geneid and the values in the file are the quantified number of transcripts.
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| Submission date |
Aug 06, 2019 |
| Last update date |
Nov 19, 2019 |
| Contact name |
Sagar - |
| E-mail(s) |
sagar@uniklinik-freiburg.de
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| Organization name |
University Medical Center Freiburg
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| Department |
Department of Internal Medicine II
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| Lab |
Sagar
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| Street address |
Hugstetter Straße 55
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| City |
Freiburg |
| ZIP/Postal code |
79106 |
| Country |
Germany |
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| Platform ID |
GPL21290 |
| Series (1) |
| GSE135437 |
Mapping microglia diversity in the human brain through the integration of high-dimensional techniques |
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| Relations |
| BioSample |
SAMN12501469 |
| SRA |
SRX6658685 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSM4008960_GBM4_1_7.coutt.tsv.gz |
465.6 Kb |
(ftp)(http) |
TSV |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data provided as supplementary file |
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