Sus scrofa
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA305992 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR3066483_1.fastq.gz | Fastqsanger.gz | |||
| SRR3066483_2.fastq.gz | Fastqsanger.gz | |||
| SRR3066484_1.fastq.gz | Fastqsanger.gz | |||
| SRR3066484_2.fastq.gz | Fastqsanger.gz |
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Project description:Oxidative stress is involved in the human diseases and developmental retardation of animals. The molecular mechanisms that mediate the response of neuron to oxidative stress have been extensively studied. MicroRNAs (MiRNAs) are a type of small non-coding RNAs that regulate nearly all aspects of nerve development and survival, including apoptosis. However, the effect of oxidative stress on the expression of miRNAs of hippocampus of Rongchang piglets, which are regarded as the good production animal and biomedical model has not been investigated. In this study, oxidative stress was induced in newborn piglets by means of intra-muscular injection of iron. Injection of iron significantly increased several markers of oxidative stress in serum of Rongchang piglets. RNA-sequencing (RNA-seq) technology and bioinformatics were used to uncover the differently expressed miRNAs and target genes induced by oxidative stress in the ventral hippocampus (VH) and dorsal hippocampus (DH) of Rongchang piglets, respectively. Results revealed 2790 conserved miRNAs belonging to 279 miRNA families, 326 known miRNAs and 702 novel miRNAs. The sub-tissue specificity was displayed with 54 differentially expressed miRNAs being found between VH and DH. At the same time, the injection of iron induced 59 and 46 differentially expressed miRNAs in VH and DH, respectively. The analysis of target genes showed that 6 known miRNAs (ssc-miR-183, ssc-miR-383, ssc-miR-193a-5p, ssc-miR-182, ssc-miR-7138-5p and ssc-miR-1271) commonly targeted to ADM2. In addition, GO and KEGG pathway analysis showed that these differentially expressed miRNAs induced by the injection of iron were involved in the pathways that regulate the expression of genes associated with oxidative stress. Our study provided an overview of miRNAs expression profile of functional sub-region of hippocampus in Rongchang piglets and shed light into the significantly changed miRNAs after the injection of iron, which will lead to further understanding of the important roles of miRNAs in hippocampus of Rongchang piglets during the process of oxidative stress.
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