Transcriptomic Analysis of CAD Cell Differentiation
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1234137 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR32633651.fastq.gz | Fastqsanger.gz | |||
| SRR32633652.fastq.gz | Fastqsanger.gz | |||
| SRR32633653.fastq.gz | Fastqsanger.gz | |||
| SRR32633654.fastq.gz | Fastqsanger.gz | |||
| SRR32633655.fastq.gz | Fastqsanger.gz |
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Project description:Purpose: We applied the next-generation sequencing to explore the differential gene expression in CAD cells differentiated with dexamethasone (Dex), compared to the undifferentiated cells using Illumna -based RNA-sequencing. Methods: Total RNAs were extracted from undifferentiated CAD cells and Dex-differentiated cells (5 days). Three independent samples were collected from both experimental groups. Samples then underwent to the sequencing step performed on NextSeq with a 75 base-pair end read length. Quality filtered reads were mapped to the mouse reference genome (GRCm38.p6). Feature Counts software was implemented to obtain raw counts for all mouse genes. The gene counts were used for differential expression analysis with the DESeq2 package to identify differentially expressed genes (DEGs) in the Dex-differentiated CAD cells, as compared to the undifferentiated CAD cells. Results: The sequence reads (expression level) per sample was obtained in a range of 9.8-11.2 million. The high quality of sequence reads was mapped to the mouse reference transcriptome (GRCm38.p6). The gene counts were used for differential expression analysis. The sample-to-sample distance demonstrated that the clustering of the undifferentiated groups was completely separated from the clustering of Dex-differentiated groups. A PCA plot showed that there was a huge variation (PC 1 =99%) between the Dex-differentiated group and the undifferentiated group but less variation was observed within the same group (PC2 = 0%). These statistic profiles indicate that the transcriptomic profile between Dex-differentiated CAD cells and undifferentiated CAD cells had the different pattern. A total of 1,183 differentially expressed genes (DEGs) were identified in the Dex-differentiated CAD cells compared to the undifferentiated CAD cells (false discovery rate < 0.01 and |log2 [fold change] | > 2). Of these, 803 and 380 genes were significantly upregulated and downregulated in the Dex-differentiated group, respectively. Conclusion: Dexamethasone causes extensive changes in gene expression of CAD cells.
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