Open Access

Genome‑wide investigation of the clinical significance and prospective molecular mechanisms of kinesin family member genes in patients with lung adenocarcinoma

  • Authors:
    • Linbo Zhang
    • Guangzhi Zhu
    • Xiangkun Wang
    • Xiwen Liao
    • Rui Huang
    • Chunxia Huang
    • Ping Huang
    • Jianquan Zhang
    • Peng Wang
  • View Affiliations

  • Published online on: July 16, 2019     https://doi.org/10.3892/or.2019.7236
  • Pages: 1017-1034
  • Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The current study aimed to identify the potential clinical significance and molecular mechanisms of kinesin (KIF) family member genes in lung adenocarcinoma (LUAD) using genome‑wide RNA sequencing (RNA‑seq) datasets derived from The Cancer Genome Atlas (TCGA) database. Clinical parameters and RNA‑seq data of patients with LUAD from the TCGA database enabled the assessment of the clinical significance of KIF genes, while the potential mechanisms of their interactions in LUAD were investigated by gene set enrichment analysis (GSEA). A gene signature with potential prognostic value was constructed via a stepwise multivariable Cox analysis. In total, 23 KIF genes were identified to be differentially expressed genes (DEGs) between the LUAD tumor and adjacent non‑cancerous tissues. Of these, 8 differentially expressed KIF genes were strongly found to be strongly associated with the overall survival of patients with LUAD. Three of these genes were found to be able to be grouped as a potential prognostic gene signature. Patients with higher risk scores calculated using this gene signature were found to have a markedly higher risk of mortality (adjusted P=0.003; adjusted HR, 1.576; 95% CI, 1.166‑2.129). Time‑dependent receiver operating characteristic analysis indicated that this prognostic signature was able to accurately predict patient prognosis with an area under curve of 0.636, 0.643,0.665, 0.670 and 0.593 for the 1‑, 2‑, 3‑, 4‑ and 5‑year survival, respectively. This prognostic gene signature was identified as an independent risk factor for LUAD and was able to more accurately predict prognosis in comparison to other known clinical parameters, as shown via comprehensive survival analysis. GSEA enrichment revealed that that KIF14, KIF18B and KIF20A mediated basic cell physiology through the regulation of the cell cycle, DNA replication, and DNA repair biological processes and pathways. On the whole, the findings of this study identified 23 KIF genes that were DEGs between LUAD tumor and adjacent non‑cancerous tissues. In total, 8 of these genes had the potential to function as prognostic and diagnostic biomarkers in patients with LUAD.
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September-2019
Volume 42 Issue 3

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Zhang L, Zhu G, Wang X, Liao X, Huang R, Huang C, Huang P, Zhang J and Wang P: Genome‑wide investigation of the clinical significance and prospective molecular mechanisms of kinesin family member genes in patients with lung adenocarcinoma. Oncol Rep 42: 1017-1034, 2019
APA
Zhang, L., Zhu, G., Wang, X., Liao, X., Huang, R., Huang, C. ... Wang, P. (2019). Genome‑wide investigation of the clinical significance and prospective molecular mechanisms of kinesin family member genes in patients with lung adenocarcinoma. Oncology Reports, 42, 1017-1034. https://doi.org/10.3892/or.2019.7236
MLA
Zhang, L., Zhu, G., Wang, X., Liao, X., Huang, R., Huang, C., Huang, P., Zhang, J., Wang, P."Genome‑wide investigation of the clinical significance and prospective molecular mechanisms of kinesin family member genes in patients with lung adenocarcinoma". Oncology Reports 42.3 (2019): 1017-1034.
Chicago
Zhang, L., Zhu, G., Wang, X., Liao, X., Huang, R., Huang, C., Huang, P., Zhang, J., Wang, P."Genome‑wide investigation of the clinical significance and prospective molecular mechanisms of kinesin family member genes in patients with lung adenocarcinoma". Oncology Reports 42, no. 3 (2019): 1017-1034. https://doi.org/10.3892/or.2019.7236