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37c30c47-b54e-485f-b3d1-c2e022558992 - samples

ABSTRACT: Matrix of normal values from 39 marker CyTOF assay performed on baseline BMMC. FCS files from the CyTOF assay were normalized and concatenated using Fluidigm's CyTOF software and then de-multiplexed using Astrolabe Diagnostics, Inc., a commercial, cloud-based platform for single-cell analysis.

PROVIDER: EGAD00001011146 | EGA |

REPOSITORIES: EGA

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Project description:Purpose: The goal of this study is to compare the NGS-derived from transcriptome profiling (RNA-seq) of human iPSC, human iPSC-derived astrocytes from control and Parkinson’s disease LRRK2 G2019S, and human commercial astrocytes to gain insight into the identity of human iPSC-derived astrocytes in vitro during the differentiation process. Total RNA was assayed for quantity and quality using Qubit® RNA HS Assay (Life Technologies) and RNA 6000 Nano Assay on a Bioanalyzer 2100. The RNASeq libraries were prepared from total RNA using the TruSeq®Stranded mRNA LT Sample Prep Kit (Illumina Inc., Rev.E, October 2013). Briefly, 500ng of total RNA was used as the input material and was enriched for the mRNA fraction using oligo-dT magnetic beads. The mRNA was fragmented in the presence of divalent metal cations and at high temperature (resulting RNA fragment size was 80-250nt, with the major peak at 130nt). The second strand cDNA synthesis was performed in the presence of dUTP instead of dTTP, this allowed to achieve the strand specificity. The blunt-ended double stranded cDNA was 3´adenylated and Illumina indexed adapters were ligated. The ligation product was enriched with 15 PCR cycles and the final library was validated on an Agilent 2100 Bioanalyzer with the DNA 7500 assay. The libraries were sequenced on HiSeq2000 (Illumina, Inc) in paired-end mode with a read length of 2x76bp using TruSeq SBS Kit v4. We generated over 30 million paired-end reads for each sample in a fraction of a sequencing v4 flow cell lane, following the manufacturer’s protocol. Image analysis, base calling and quality scoring of the run were processed using the manufacturer’s software Real Time Analysis (RTA 1.18.66.3) and followed by generation of fastq.gz sequence files by CASAVA. Results: We found that transcriptome of human iPSC-derived astrocytes is similar to human commercial astrocytes than human iPSC. Conclusion: These results suggest that iPSC-derived astrocytes resemble human commercial astrocytes validating the differentiating protocol used.

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37c30c47-b54e-485f-b3d1-c2e022558992 - samples

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