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Article

Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma

  • Authors:
    • Yuzhuo Wu
    • Junhe Zhang
    • Huaihong Zhang
    • Yufeng Zhai
  • View Affiliations / Copyright

    Affiliations: Department of Infectious Diseases, Nanyang City Central Hospital, Nanyang, Henan 473000, P.R. China, Department of Biochemistry and Molecular Biology, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
  • Pages: 1971-1974
    |
    Published online on: July 20, 2016
       https://doi.org/10.3892/ol.2016.4885
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Abstract

Hepatitis B virus (HBV) X protein (HBx) is implicated in the development of hepatocellular carcinoma (HCC). Yes-associated protein 1 (YAP) is an important proto-oncogene, which is a downstream effector molecule in the Hippo signaling pathway. The aim of the present study was to investigate the association between HBx expression in HCC samples and YAP expression in the Hippo pathway. A total of 20 pathologically confirmed HCC samples, 20 corresponding adjacent non-tumor liver tissues and 5 normal liver tissue samples were collected. The expression of HBx and YAP in the tissues was analyzed by quantitative reverse transcription‑polymerase chain reaction and western blot analysis. The intensity and location of YAP expression were analyzed by immunohistochemistry. YAP mRNA and protein expression levels in HCC samples infected with HBV were significantly higher than those of normal liver tissues. Furthermore, YAP expression was positively correlated with HBx expression in HBV-positive HCC samples. Immunohistochemical staining revealed that YAP was predominantly expressed in the nuclei in HBV-positive HCC tissues. YAP expression was significantly decreased in the normal liver tissue and corresponding adjacent liver tissue when compared with the HCC tissues and by contrast to HCC tissues, YAP was predominantly located in the cytoplasm. In conclusion, these results indicate that the YAP gene is a key driver of HBx‑induced liver cancer. Therefore, YAP may present a novel target in the treatment of HBV-associated HCC.
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Copy and paste a formatted citation
Spandidos Publications style
Wu Y, Zhang J, Zhang H and Zhai Y: Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma. Oncol Lett 12: 1971-1974, 2016.
APA
Wu, Y., Zhang, J., Zhang, H., & Zhai, Y. (2016). Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma. Oncology Letters, 12, 1971-1974. https://doi.org/10.3892/ol.2016.4885
MLA
Wu, Y., Zhang, J., Zhang, H., Zhai, Y."Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma". Oncology Letters 12.3 (2016): 1971-1974.
Chicago
Wu, Y., Zhang, J., Zhang, H., Zhai, Y."Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma". Oncology Letters 12, no. 3 (2016): 1971-1974. https://doi.org/10.3892/ol.2016.4885
Copy and paste a formatted citation
x
Spandidos Publications style
Wu Y, Zhang J, Zhang H and Zhai Y: Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma. Oncol Lett 12: 1971-1974, 2016.
APA
Wu, Y., Zhang, J., Zhang, H., & Zhai, Y. (2016). Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma. Oncology Letters, 12, 1971-1974. https://doi.org/10.3892/ol.2016.4885
MLA
Wu, Y., Zhang, J., Zhang, H., Zhai, Y."Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma". Oncology Letters 12.3 (2016): 1971-1974.
Chicago
Wu, Y., Zhang, J., Zhang, H., Zhai, Y."Hepatitis B virus X protein mediates yes-associated protein 1 upregulation in hepatocellular carcinoma". Oncology Letters 12, no. 3 (2016): 1971-1974. https://doi.org/10.3892/ol.2016.4885
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