Integrative analyses of gene expression profile reveal potential crucial roles of mitotic cell cycle and microtubule cytoskeleton in pulmonary artery hypertension

J Luo, H Li, Z Liu, C Li, R Wang, J Fang, S Lu… - BMC Medical …, 2020 - Springer
J Luo, H Li, Z Liu, C Li, R Wang, J Fang, S Lu, J Guo, X Zhu, X Wang
BMC Medical Genomics, 2020Springer
Background Pulmonary arterial hypertension (PAH) is a life-threatening condition. The aim
of this study was to explore potential crucial genes and pathways associated with PAH
based on integrative analyses of gene expression and to shed light on the identification of
biomarker for PAH. Methods Gene expression profile of pulmonary tissues from 27 PAH
patients and 22 normal controls were downloaded from public database (GSE53408 and
GSE113439). After the identification of differentially expressed genes (DEGs), hub pathways …
Background
Pulmonary arterial hypertension (PAH) is a life-threatening condition. The aim of this study was to explore potential crucial genes and pathways associated with PAH based on integrative analyses of gene expression and to shed light on the identification of biomarker for PAH.
Methods
Gene expression profile of pulmonary tissues from 27 PAH patients and 22 normal controls were downloaded from public database (GSE53408 and GSE113439). After the identification of differentially expressed genes (DEGs), hub pathways and genes were identified based on the comprehensive evaluation of protein-protein interaction (PPI) network analysis, modular analysis and cytohubba’s analysis, and further validated in another PAH transcriptomic dataset (GSE33463). Potentially associated micro-RNAs (miRNAs) were also predicted.
Results
A total of 521 DEGs were found between PAH and normal controls, including 432 up-regulated DEGs and 89 down-regulated DEGs. Functional enrichment analysis showed that these DEGs were mainly enriched in mitotic cell cycle process, mitotic cell cycle and microtubule cytoskeleton organization. Moreover, five key genes (CDK1, SMC2, SMC4, KIF23, and CENPE) were identified and then further validated in another transcriptomic dataset associated with special phenotypes of PAH. Furthermore, these hub genes were mainly enriched in promoting mitotic cell cycle process, which may be closely associated with the pathogenesis of PAH. We also found that the predicted miRNAs targeting these hub genes were found to be enriched in TGF-β and Hippo signaling pathway.
Conclusion
These findings are expected to gain a further insight into the development of PAH and provide a promising index for the detection of PAH.
Springer
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