Liu Y, Wang X, Wang H, Hu T. Identification of key genes and pathways in abdominal aortic aneurysm by integrated bioinformatics analysis.
J Int Med Res 2019;
48:300060519894437. [PMID:
31885343 PMCID:
PMC7783286 DOI:
10.1177/0300060519894437]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Objectives
To identify key genes associated with abdominal aortic aneurysm (AAA) by
integrating a microarray profile and a single-cell RNA-seq dataset.
Methods
The microarray profile of GSE7084 and the single-cell RNA-seq dataset were
obtained from the Gene Express Omnibus database. Differentially expressed
genes (DEGs) were chosen using the R package and annotated by Gene Ontology
and Kyoto Encyclopedia of Genes and Genomics analysis. The hub genes were
identified based on their degrees of interaction in the protein-protein
interaction (PPI) network. Expression of hub genes was determined using
single-cell RNA-seq analysis.
Results
In total, 507 upregulated and 842 downregulated DEGs were identified and
associated with AAA. The upregulated DEGs were enriched into 9 biological
processes and 10 biological pathways, which were closely involved in the
pathogenesis and progression of AAA. Based on the PPI network, we focused on
six hub genes, four of which were novel target genes compared with the known
aneurysm gene database. Using single-cell RNA-seq analysis, we explored the
four genes expressed in vascular cells of AAA: CANX,
CD44, DAXX, and
STAT1.
Conclusions
We identified key genes that may provide insight into the mechanism of AAA
pathogenesis and progression and that have potential to be therapeutic
targets.
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