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Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis

  • Authors:
    • Guansheng Zhong
    • Weiyang Lou
    • Qinyan Shen
    • Kun Yu
    • Yajuan Zheng
  • View Affiliations / Copyright

    Affiliations: Department of Thyroid and Breast Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China, Program of Innovative Therapeutics, First Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang 310014, P.R. China, Department of Surgical Oncology, Dongyang People's Hospital of Zhejiang, Dongyang, Zhejiang 322100, P.R. China
    Copyright: © Zhong et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 557-566
    |
    Published online on: December 6, 2019
       https://doi.org/10.3892/mmr.2019.10867
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Abstract

Triple‑negative breast cancer (TNBC) accounts for the worst prognosis of all types of breast cancers due to a high risk of recurrence and a lack of targeted therapeutic options. Extensive effort is required to identify novel targets for TNBC. In the present study, a robust rank aggregation (RRA) analysis based on genome‑wide gene expression datasets involving TNBC patients from the Gene Expression Omnibus (GEO) database was performed to identify key genes associated with TNBC. A total of 194 highly ranked differentially expressed genes (DEGs) were identified in TNBC vs. non‑TNBC. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes pathway (KEGG) enrichment analysis was utilized to explore the biological functions of the identified genes. These DEGs were mainly involved in the biological processes termed positive regulation of transcription from RNA polymerase II promoter, negative regulation of apoptotic process, response to drug, response to estradiol and negative regulation of cell growth. Genes were mainly involved in the KEGG pathway termed estrogen signaling pathway. The aberrant expression of several randomly selected DEGs were further validated in cell lines, clinical tissues and The Cancer Genome Atlas (TCGA) cohort. Furthermore, all the top‑ranked DEGs underwent survival analysis using TCGA database, of which overexpression of 4 genes (FABP7, ART3, CT83, and TTYH1) were positively correlated to the life expectancy (P<0.05) of TNBC patients. In addition, a model consisting of two genes (FABP7 and CT83) was identified to be significantly associated with the overall survival (OS) of TNBC patients by means of Cox regression, Kaplan‑Meier, and receiver operating characteristic (ROC) analyses. In conclusion, the present study identified a number of key genes as potential biomarkers involved in TNBC, which provide novel insights into the tumorigenesis of TNBC at the gene level and may serve as independent prognostic factors for TNBC prognosis.
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Copy and paste a formatted citation
Spandidos Publications style
Zhong G, Lou W, Shen Q, Yu K and Zheng Y: Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis. Mol Med Rep 21: 557-566, 2020.
APA
Zhong, G., Lou, W., Shen, Q., Yu, K., & Zheng, Y. (2020). Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis. Molecular Medicine Reports, 21, 557-566. https://doi.org/10.3892/mmr.2019.10867
MLA
Zhong, G., Lou, W., Shen, Q., Yu, K., Zheng, Y."Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis". Molecular Medicine Reports 21.2 (2020): 557-566.
Chicago
Zhong, G., Lou, W., Shen, Q., Yu, K., Zheng, Y."Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis". Molecular Medicine Reports 21, no. 2 (2020): 557-566. https://doi.org/10.3892/mmr.2019.10867
Copy and paste a formatted citation
x
Spandidos Publications style
Zhong G, Lou W, Shen Q, Yu K and Zheng Y: Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis. Mol Med Rep 21: 557-566, 2020.
APA
Zhong, G., Lou, W., Shen, Q., Yu, K., & Zheng, Y. (2020). Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis. Molecular Medicine Reports, 21, 557-566. https://doi.org/10.3892/mmr.2019.10867
MLA
Zhong, G., Lou, W., Shen, Q., Yu, K., Zheng, Y."Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis". Molecular Medicine Reports 21.2 (2020): 557-566.
Chicago
Zhong, G., Lou, W., Shen, Q., Yu, K., Zheng, Y."Identification of key genes as potential biomarkers for triple‑negative breast cancer using integrating genomics analysis". Molecular Medicine Reports 21, no. 2 (2020): 557-566. https://doi.org/10.3892/mmr.2019.10867
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