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Article

Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma

  • Authors:
    • Peng Wu
    • Donghu Zhou
    • Yuqian Wang
    • Weiran Lin
    • Aihua Sun
    • Handong Wei
    • Yi Fang
    • Xianling Cong
    • Ying Jiang
  • View Affiliations / Copyright

    Affiliations: State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, P.R. China, Department of Dermatology, China‑Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China, Department of Endocrinology, Beijing 307 Hospital, Beijing 100070, P.R. China
  • Pages: 1929-1937
    |
    Published online on: December 21, 2018
       https://doi.org/10.3892/or.2018.6947
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Abstract

Alternative splicing (AS) is a transcriptional regulation mechanism that participates in multiple aspects of cancer. The present study aimed to identify differential AS events from tumor and non‑tumor samples and investigate the potential of AS as a source of candidate cancer diagnostic biomarkers. Deep RNA sequencing of three paired hepatocellular carcinoma (HCC) tumors and adjacent non‑tumors was applied to identify AS events. RT‑qPCR was performed on 45 HCC clinical samples to validate the splicing differences. The maximal information coefficient was first used to build an association between clinical features and AS changes. We identified 197 significantly differential skipped exon events, of which only 29% overlapped with the differentially expressed genes. The differentially spliced genes were mainly enriched in HCC‑characterized biological processes and pathways, clearly separating tumors from non‑tumors. We also validated the statistically significant splicing differences of three AS candidates (CEACAM1 exon 7, VPS29 exon 2 and ISOC2 exon 3). Furthermore, a clinicopathological analysis revealed that carcinoembryonic antigen‑related cell adhesion molecule 1 (CEACAM1) exon 7 was significantly correlated with the survival time, and VPS29 exon 2 was associated with cell differentiation stages. In conclusion, the findings of the three AS candidates in the present study could be beneficial in HCC prognosis and new treatment strategies.
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Copy and paste a formatted citation
Spandidos Publications style
Wu P, Zhou D, Wang Y, Lin W, Sun A, Wei H, Fang Y, Cong X and Jiang Y: Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma. Oncol Rep 41: 1929-1937, 2019.
APA
Wu, P., Zhou, D., Wang, Y., Lin, W., Sun, A., Wei, H. ... Jiang, Y. (2019). Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma. Oncology Reports, 41, 1929-1937. https://doi.org/10.3892/or.2018.6947
MLA
Wu, P., Zhou, D., Wang, Y., Lin, W., Sun, A., Wei, H., Fang, Y., Cong, X., Jiang, Y."Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma". Oncology Reports 41.3 (2019): 1929-1937.
Chicago
Wu, P., Zhou, D., Wang, Y., Lin, W., Sun, A., Wei, H., Fang, Y., Cong, X., Jiang, Y."Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma". Oncology Reports 41, no. 3 (2019): 1929-1937. https://doi.org/10.3892/or.2018.6947
Copy and paste a formatted citation
x
Spandidos Publications style
Wu P, Zhou D, Wang Y, Lin W, Sun A, Wei H, Fang Y, Cong X and Jiang Y: Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma. Oncol Rep 41: 1929-1937, 2019.
APA
Wu, P., Zhou, D., Wang, Y., Lin, W., Sun, A., Wei, H. ... Jiang, Y. (2019). Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma. Oncology Reports, 41, 1929-1937. https://doi.org/10.3892/or.2018.6947
MLA
Wu, P., Zhou, D., Wang, Y., Lin, W., Sun, A., Wei, H., Fang, Y., Cong, X., Jiang, Y."Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma". Oncology Reports 41.3 (2019): 1929-1937.
Chicago
Wu, P., Zhou, D., Wang, Y., Lin, W., Sun, A., Wei, H., Fang, Y., Cong, X., Jiang, Y."Identification and validation of alternative splicing isoforms as novel biomarker candidates in hepatocellular carcinoma". Oncology Reports 41, no. 3 (2019): 1929-1937. https://doi.org/10.3892/or.2018.6947
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