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Article

Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival

  • Authors:
    • Lei Gong
    • Jirun Peng
    • Zhuqingqing Cui
    • Pengcheng Chen
    • Hui Han
    • Dafang Zhang
    • Xisheng Leng
  • View Affiliations / Copyright

    Affiliations: Department of Hepatobiliary Surgery, Peking University People's Hospital, Beijing 100044, P.R. China
  • Pages: 1083-1088
    |
    Published online on: September 22, 2010
       https://doi.org/10.3892/ol.2010.175
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Abstract

XAGE-1 is classified into the group of a new family of cancer-testis antigens (CTA) and has the four transcript variants of XAGE-1a, XAGE-1b, XAGE-1c and XAGE-1d. Immunohistochemistry was used to investigate the expression of XAGE-1 transcript variants in Chinese patients with hepatocellular carcinoma (HCC). Reverse transcription-polymerase chain reaction (RT-PCR) and real-time RT-PCR were used to analyze XAGE-1 gene expression, and XAGE-1 protein expression was examined by immunohistochemistry. Furthermore, the clinical correlation of XAGE-1 expression was analyzed. The expression of the XAGE-1 mRNA was investigated in the tissues of 96 HCC patients and all XAGE-1 isoforms were detected in these tissues. Three types of XAGE-1 transcript variants (XAGE-1b, XAGE-1c and XAGE-1d) showed high specific and frequent expression in HCC tissues, with the positive expression rate of XAGE-1b, XAGE-1c and XAGE-1d being 41.7% (40/96), 15.6% (15/96) and 26.0% (25/96), respectively. XAGE-1b was the dominant type, but none of the three were detected in adjacent non-HCC tissues. Only 2 cases of XAGE-1a mRNA expression were observed. Moreover, XAGE-1 protein was detected in 39 of 96 HCC patients, but none in the adjacent non-cancerous tissue and normal liver tissue. No relationship was found between the expression of XAGE-1 and clinical parameters, such as age, gender, tumor size, TNM staging, serum AFP level and infection with hepatitis virus. Patients with XAGE-1b-positive transcript variant exhibited shorter 2-year survival times. The high frequency and specificity of XAGE-1, particularly XAGE-1b, in HCC indicates that their products may predict the prognosis of HCC patients and be novel targets for antigen-specific immunotherapy to HCC.
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Copy and paste a formatted citation
Spandidos Publications style
Gong L, Peng J, Cui Z, Chen P, Han H, Zhang D and Leng X: Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival. Oncol Lett 1: 1083-1088, 2010.
APA
Gong, L., Peng, J., Cui, Z., Chen, P., Han, H., Zhang, D., & Leng, X. (2010). Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival. Oncology Letters, 1, 1083-1088. https://doi.org/10.3892/ol.2010.175
MLA
Gong, L., Peng, J., Cui, Z., Chen, P., Han, H., Zhang, D., Leng, X."Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival". Oncology Letters 1.6 (2010): 1083-1088.
Chicago
Gong, L., Peng, J., Cui, Z., Chen, P., Han, H., Zhang, D., Leng, X."Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival". Oncology Letters 1, no. 6 (2010): 1083-1088. https://doi.org/10.3892/ol.2010.175
Copy and paste a formatted citation
x
Spandidos Publications style
Gong L, Peng J, Cui Z, Chen P, Han H, Zhang D and Leng X: Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival. Oncol Lett 1: 1083-1088, 2010.
APA
Gong, L., Peng, J., Cui, Z., Chen, P., Han, H., Zhang, D., & Leng, X. (2010). Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival. Oncology Letters, 1, 1083-1088. https://doi.org/10.3892/ol.2010.175
MLA
Gong, L., Peng, J., Cui, Z., Chen, P., Han, H., Zhang, D., Leng, X."Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival". Oncology Letters 1.6 (2010): 1083-1088.
Chicago
Gong, L., Peng, J., Cui, Z., Chen, P., Han, H., Zhang, D., Leng, X."Hepatocellular carcinoma patients highly and specifically expressing XAGE-1 exhibit prolonged survival". Oncology Letters 1, no. 6 (2010): 1083-1088. https://doi.org/10.3892/ol.2010.175
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