期刊
GENES
卷 8, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/genes8120383
关键词
miR-128; severe equine asthma; recurrent airway obstruction; microRNA; biomarker; RNA-sequencing; serum; hemolysis; differential expression
资金
- Swiss National Science Foundation [31003A-162548/1]
- Swiss Institute of Equine Medicine, Bern, Switzerland [33-890]
- Swiss National Science Foundation (SNF) [31003A_162548] Funding Source: Swiss National Science Foundation (SNF)
MicroRNAs (miRNAs) regulate post-transcriptional gene expression and may be exported from cells via exosomes or in partnership with RNA-binding proteins. MiRNAs in body fluids can act in a hormone-like manner and play important roles in disease initiation and progression. Hence, miRNAs are promising candidates as biomarkers. To identify serum miRNA biomarkers in the equine model of asthma we investigated small RNA derived from the serum of 34 control and 37 asthmatic horses. These samples were used for next generation sequencing, novel miRNA identification and differential miRNA expression analysis. We identified 11 significantly differentially expressed miRNAs between case and control horses: eca-miR-128, eca-miR-744, eca-miR-197, eca-miR-103, eca-miR-107a, eca-miR-30d, eca-miR-140-3p, eca-miR-7, eca-miR-361-3p, eca-miR-148b-3p and eca-miR-215. Pathway enrichment using experimentally validated target genes of the human homologous miRNAs showed a significant enrichment in the regulation of epithelial-to-mesenchymal transition (key player in airway remodeling in asthma) and the phosphatidylinositol (3,4,5)-triphosphate (PIP3) signaling pathway (modulator of CD4(+) T cell maturation and function). Downregulated miR-128 and miR-744 supports a Th2/Th17 type immune response in severe equine asthma.
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