• Medicine · Dec 2020

    Identification of candidate biomarkers correlated with the pathogenesis and prognosis of breast cancer via integrated bioinformatics analysis.

    • Shuyu Liu, Xinkui Liu, Jiarui Wu, Wei Zhou, Mengwei Ni, Ziqi Meng, Shanshan Jia, Jingyuan Zhang, Siyu Guo, Shan Lu, and Yingfei Li.
    • Department of Clinical Chinese Pharmacy, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Chaoyang District.
    • Medicine (Baltimore). 2020 Dec 4; 99 (49): e23153.

    BackgroundThis study was carried out to identify potential key genes associated with the pathogenesis and prognosis of breast cancer (BC).MethodsSeven GEO datasets (GSE24124, GSE32641, GSE36295, GSE42568, GSE53752, GSE70947, GSE109169) were downloaded from the Gene Expression Omnibus (GEO) database. Differentially expressed genes (DEGs) between BC and normal breast tissue samples were screened by an integrated analysis of multiple gene expression profile datasets. Hub genes related to the pathogenesis and prognosis of BC were verified by employing protein-protein interaction (PPI) network.ResultsTen hub genes with high degree were identified, including CDK1, CDC20, CCNA2, CCNB1, CCNB2, BUB1, BUB1B, CDCA8, KIF11, and TOP2A. Lastly, the Kaplan-Meier plotter (KM plotter) online database demonstrated that higher expression levels of these genes were related to lower overall survival. Experimental validation showed that all 10 hub genes had the same expression trend as predicted.ConclusionThe findings of this research would provide some directive significance for further investigating the diagnostic and prognostic biomarkers to facilitate the molecular targeting therapy of BC, which could be used as a new biomarker for diagnosis and to guide the combination medicine of BC.

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