Bioinformatics analysis of potential common molecular pathogenesis assumed by intracranial aneurysm, aortic aneurysm and aortic dissection

Abstract

This study is intended to find possible pathogenesis-related genetic overlap and common molecular mechanisms of intracranial aneurysm, abdominal aortic aneurysm and aortic dissection. Three mRNA microarray datasets,GSE75436 of intracranial aneurysms, GSE7084 of abdominal aortic aneurysm and GSE52093 of aortic dissection were downloaded from Gene Expression Omnibus and detected in silico . DEGs of these three datasets screened through GEO2R, respectively . The overlapping genes were found by Venny mapping. Subsequently, Gene Ontology, Kyoto Encyclopedia of Genes and Genomespathway enrichment analysiswere performed using the DAVID database and protein-protein interaction network analyses were conducted by STRING and Cytoscape webpage tool to illustrate the molecular mechanisms in their pathogenesis and progression.This study identified 178 DEGs, including SMTN, MYH11, TAGLN, ACTG2, CNN1, MYLK, LMOD1, MYL9,VCL and ACTC1 in the the most significant module. Except for those confirmed biological processes, mesenchyme migration and platelet aggregation are common biological processes shared by genes in the most significant module and the hub genes. Focal adhesionssignaling pathway is highlighted in this analysis. The present study identified possible pathogenesis-related genetic overlap and common molecular mechanisms of intracranial aneurysm, abdominal aortic aneurysm and aortic dissection, which may contribute to their diagnosis, treatment and prognostic prediction with a systematic view.