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Support vector machine classifier for prediction of the metastasis of colorectal cancer

  • Authors:
    • Jiajun Zhi
    • Jiwei Sun
    • Zhongchuan Wang
    • Wenjun Ding
  • View Affiliations / Copyright

    Affiliations: Department of Colorectal Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
    Copyright: © Zhi et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1419-1426
    |
    Published online on: January 2, 2018
       https://doi.org/10.3892/ijmm.2018.3359
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Abstract

Colorectal cancer (CRC) is one of the most common cancers and a major cause of mortality. The present study aimed to identify potential biomarkers for CRC metastasis and uncover the mechanisms underlying the etiology of the disease. The five datasets GSE68468, GSE62321, GSE22834, GSE14297 and GSE6988 were utilized in the study, all of which contained metastatic and non-metastatic CRC samples. Among them, three datasets were integrated via meta-analysis to identify the differentially expressed genes (DEGs) between the two types of samples. A protein-protein interaction (PPI) network was constructed for these DEGs. Candidate genes were then selected by the support vector machine (SVM) classifier based on the betweenness centrality (BC) algorithm. A CRC dataset from The Cancer Genome Atlas database was used to evaluate the accuracy of the SVM classifier. Pathway enrichment analysis was carried out for the SVM-classified gene signatures. In total, 358 DEGs were identified by meta‑analysis. The top ten nodes in the PPI network with the highest BC values were selected, including cAMP responsive element binding protein 1 (CREB1), cullin 7 (CUL7) and signal sequence receptor 3 (SSR3). The optimal SVM classification model was established, which was able to precisely distinguish between the metastatic and non-metastatic samples. Based on this SVM classifier, 40 signature genes were identified, which were mainly enriched in protein processing in endoplasmic reticulum (e.g., SSR3), AMPK signaling pathway (e.g., CREB1) and ubiquitin mediated proteolysis (e.g., FBXO2, CUL7 and UBE2D3) pathways. In conclusion, the SVM-classified genes, including CREB1, CUL7 and SSR3, precisely distinguished the metastatic CRC samples from the non-metastatic ones. These genes have the potential to be used as biomarkers for the prognosis of metastatic CRC.
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Copy and paste a formatted citation
Spandidos Publications style
Zhi J, Sun J, Wang Z and Ding W: Support vector machine classifier for prediction of the metastasis of colorectal cancer. Int J Mol Med 41: 1419-1426, 2018.
APA
Zhi, J., Sun, J., Wang, Z., & Ding, W. (2018). Support vector machine classifier for prediction of the metastasis of colorectal cancer. International Journal of Molecular Medicine, 41, 1419-1426. https://doi.org/10.3892/ijmm.2018.3359
MLA
Zhi, J., Sun, J., Wang, Z., Ding, W."Support vector machine classifier for prediction of the metastasis of colorectal cancer". International Journal of Molecular Medicine 41.3 (2018): 1419-1426.
Chicago
Zhi, J., Sun, J., Wang, Z., Ding, W."Support vector machine classifier for prediction of the metastasis of colorectal cancer". International Journal of Molecular Medicine 41, no. 3 (2018): 1419-1426. https://doi.org/10.3892/ijmm.2018.3359
Copy and paste a formatted citation
x
Spandidos Publications style
Zhi J, Sun J, Wang Z and Ding W: Support vector machine classifier for prediction of the metastasis of colorectal cancer. Int J Mol Med 41: 1419-1426, 2018.
APA
Zhi, J., Sun, J., Wang, Z., & Ding, W. (2018). Support vector machine classifier for prediction of the metastasis of colorectal cancer. International Journal of Molecular Medicine, 41, 1419-1426. https://doi.org/10.3892/ijmm.2018.3359
MLA
Zhi, J., Sun, J., Wang, Z., Ding, W."Support vector machine classifier for prediction of the metastasis of colorectal cancer". International Journal of Molecular Medicine 41.3 (2018): 1419-1426.
Chicago
Zhi, J., Sun, J., Wang, Z., Ding, W."Support vector machine classifier for prediction of the metastasis of colorectal cancer". International Journal of Molecular Medicine 41, no. 3 (2018): 1419-1426. https://doi.org/10.3892/ijmm.2018.3359
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