Identification of the Key MicroRNAs and the miRNA-mRNA Regulatory Pathways in Prostate Cancer by Bioinformatics Methods

BioMed Research International
Dongyang LiYongsheng Song

Abstract

To identify key microRNAs (miRNAs) and their regulatory networks in prostate cancer. Four miRNA and three gene expression microarray datasets were downloaded for analysis from Gene Expression Omnibus database. The differentially expressed miRNA and genes were accessed by a GEO2R. Functional and pathway enrichment analyses were performed using the DAVID program. Protein-protein interaction (PPI) and miRNA-mRNA regulatory networks were constructed using the STRING and Cytoscape tool. Moreover, the results and clinical significance were validated in TCGA data. We identified 26 significant DEMs, 633 upregulated DEGs, and 261 downregulated DEGs. Functional enrichment analysis indicated that significant DEGs were related to TGF-beta signaling pathway and TNF signaling pathway in PCa. Key DEGs such as HSPA8, PPP2R1A, CTNNB1, ADCY5, ANXA1, and COL9A2 were found as hub genes in PPI networks. TCGA data supported our results and the miRNAs were correlated with clinical stages and overall survival. We identified 26 miRNAs that may take part in key pathways like TGF-beta and TNF pathways in prostate cancer regulatory networks. MicroRNAs like miR-23b, miR-95, miR-143, and miR-183 can be utilized in assisting the diagnosis and prognosis of pr...Continue Reading

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Citations

May 20, 2020·Cancer Management and Research·Chunhong LiuXiulong Xu
Jan 17, 2021·International Journal of Molecular Sciences·Gilberto Ruiz-DeyaJong Y Park

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Datasets Mentioned

BETA
GSE103512
GSE54516

Methods Mentioned

BETA
biopsy
xenograft

Software Mentioned

limma R
GEO2R
MiRWalk
Search Tool for the Retrieval of Interacting Genes / Proteins ...
miRTarbase
Cytoscape
miRanda
Database for Annotation , Visualization , and Integrated Disco...

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