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Article

Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9

  • Authors:
    • Fangxing Ji
    • Xiaohong Chang
    • Caiyun Liu
    • Lin Meng
    • Like Qu
    • Jian Wu
    • Chanzhen Liu
    • Heng Cui
    • Chengchao Shou
  • View Affiliations / Copyright

    Affiliations: Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital and Institute, Beijing 100142, P.R. China, Gynecological Oncology Center, Peking University People's Hospital, Beijing 100044, P.R. China
  • Pages: 1405-1415
    |
    Published online on: August 6, 2015
       https://doi.org/10.3892/ijo.2015.3115
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Abstract

COC166-9 is an ovarian cancer-specific monoclonal antibody, and COC166-9-based immunotherapy has been shown to possess killing effects against ovarian cancer cells in vitro and in vivo. However the antigen recognized by COC166-9 (COC166-9-Ag, CA166-9) has not been identified and the clinical significance of CA166-9 expression remains unknown. We found that CA166-9 was positive in 53.1% of ovarian cancer tissues. Expression of CA166-9 was strongly correlated with the cancer recurrence (P<0.001). Patients with positive CA166-9 had substantially shorter overall survival (P=0.026) and disease-free survival (P=0.002). CA166-9 was also shown to be an independent predictive factor for overall survival (HR=2.454, P=0.016) and disease-free survival (HR=2.331, P=0.021). We identified CA166-9 as human immunoglobulin γ-1 heavy chain constant region (IGHG1). Purified IGHG1 promoted proliferation, migration, and invasion of CA166-9-negative ovarian cancer HOC1A cells, whereas it had minimal effects on the phenotypes of CA166-9-positive ovarian cancer CAOV-3 cells. In addition, overexpression of IGHG1 enhanced migration of ovarian cancer cells. On the contrary, COC166-9 inhibited proliferation, migration, and invasion of CAOV-3 cells, but had no effects on HOC1A cells. Therefore, IGHG1 similarly to CA166-9, could play an important role in ovarian cancer development and may serve as a potential prognostic marker and a therapeutical target for ovarian cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Ji F, Chang X, Liu C, Meng L, Qu L, Wu J, Liu C, Cui H and Shou C: Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9. Int J Oncol 47: 1405-1415, 2015.
APA
Ji, F., Chang, X., Liu, C., Meng, L., Qu, L., Wu, J. ... Shou, C. (2015). Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9. International Journal of Oncology, 47, 1405-1415. https://doi.org/10.3892/ijo.2015.3115
MLA
Ji, F., Chang, X., Liu, C., Meng, L., Qu, L., Wu, J., Liu, C., Cui, H., Shou, C."Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9". International Journal of Oncology 47.4 (2015): 1405-1415.
Chicago
Ji, F., Chang, X., Liu, C., Meng, L., Qu, L., Wu, J., Liu, C., Cui, H., Shou, C."Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9". International Journal of Oncology 47, no. 4 (2015): 1405-1415. https://doi.org/10.3892/ijo.2015.3115
Copy and paste a formatted citation
x
Spandidos Publications style
Ji F, Chang X, Liu C, Meng L, Qu L, Wu J, Liu C, Cui H and Shou C: Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9. Int J Oncol 47: 1405-1415, 2015.
APA
Ji, F., Chang, X., Liu, C., Meng, L., Qu, L., Wu, J. ... Shou, C. (2015). Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9. International Journal of Oncology, 47, 1405-1415. https://doi.org/10.3892/ijo.2015.3115
MLA
Ji, F., Chang, X., Liu, C., Meng, L., Qu, L., Wu, J., Liu, C., Cui, H., Shou, C."Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9". International Journal of Oncology 47.4 (2015): 1405-1415.
Chicago
Ji, F., Chang, X., Liu, C., Meng, L., Qu, L., Wu, J., Liu, C., Cui, H., Shou, C."Prognostic value and characterization of the ovarian cancer-specific antigen CA166-9". International Journal of Oncology 47, no. 4 (2015): 1405-1415. https://doi.org/10.3892/ijo.2015.3115
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