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26 July 2020 : Meta-Analysis  

Integrated Analysis of Three Publicly Available Gene Expression Profiles Identified Genes and Pathways Associated with Clear Cell Renal Cell Carcinoma

YuPing Han1ACD, LinLin Wang2EF, Ye Wang3AB*

DOI: 10.12659/MSM.919965

Med Sci Monit 2020; 26:e919965


BACKGROUND: Although advances have been achieved in the therapy of clear cell renal cell carcinoma (ccRCC), the pathogenesis of ccRCC is not yet fully understood. This study aimed to explore the critical genes and pathways associated with ccRCC by meta-analysis.

MATERIAL AND METHODS: We performed an integrated analysis of 3 publicly available microarray datasets developed from ccRCC tumor samples and normal tissues. A list of overlapped differentially expressed genes (DEGs) with the consistent expression trend in ccRCC tumor samples were identified, for which the protein–protein interaction (PPI) network was constructed, followed by topology structure and module analysis. The microRNA (miRNA) regulatory network and ccRCC associated pathway network were reconstructed.

RESULTS: A total of 504 genes were found to be consistently and differentially regulated based on 3 microarray datasets. The overrepresented pathways for DEGs included citric acid cycle (TCA cycle) and peroxisome proliferator-activated receptor (PPAR) signaling pathway and cell cycle. The PPI network was clustered into 6 modules that were closely related with the M phase, desmosome assembly, and response to hormone stimulus. The hsa04110: cell cycle and hsa04510: focal adhesion were the significant pathways associated with ccRCC overlapped with enrichment analysis. KDR and ITGB4 were focal-adhesion-associated genes, which were regulated by has-miR-424 and has-miR-204, respectively. CCND2 and CCNA2 were cell-cycle-associated genes, which were regulated by hsa-miR-324-3p, hsa-miR-146a and hsa-miR-145.

CONCLUSIONS: Cell cycle and focal adhesion were dysregulated in ccRCC, which were associated with the expression of CCND2, ITGB4, KDR, and CCNA2 genes. The deregulation of pathways and associated genes may provide insights to ccRCC research and therapy.

Keywords: clear cell renal cell carcinoma , Focal Adhesion, meta-analysis, microRNA, Pathway-Associated Genes



01 November 2021 : Editorial  

Editorial: What Can be Learned from National and International Vaccine Adverse Event Reporting Systems During the COVID-19 Pandemic?

Dinah V. Parums
Scientific Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.935299

Med Sci Monit 2022; 28:e935299


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Med Sci Monit In Press; DOI: 10.12659/MSM.934937  

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Serum Uric Acid Levels in Relation to Atrial Fibrillation: A Case-Control Study

Med Sci Monit In Press; DOI: 10.12659/MSM.934007  

26 Nov 2021 : Database Analysis  

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Med Sci Monit In Press; DOI: 10.12659/MSM.933537  

26 Nov 2021 : Editorial  

Editorial: SARS-CoV-2 Vaccine Responses and Breakthrough COVID-19

Med Sci Monit In Press; DOI: 10.12659/MSM.935624  

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750