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Article

53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway

  • Authors:
    • Shuhui Hong
    • Xiaoyan Li
    • Ying Zhao
    • Qifeng Yang
    • Beihua Kong
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Ji'nan, Shandong 250012, P.R. China, Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, 107 Wenhuaxi Road, Ji'nan, Shandong 250012, P.R. China
  • Pages: 1251-1257
    |
    Published online on: January 18, 2012
       https://doi.org/10.3892/or.2012.1641
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Abstract

53BP1 has been extensively studied as a key component of the DNA damage response, but little is known regarding the role of 53BP1 in preventing tumor development. The present study was designed to assess the impact of the modification of 53BP1 gene expression on the biological behavior of ovarian cancer cell lines and to elucidate the cellular pathway(s) triggered by 53BP1 in cancer cells. DNA liposome transfection technology was employed to increase and to knock down the expression of 53BP1 in A2780 and HO-8910PM cells, respectively. Viability, clonogenicity and cell cycle profiles were evaluated. Cell apoptosis was analyzed using flow cytometric assay. The expression of proteins related to apoptosis and cell signal transduction was assessed using western blotting. Increased expression of 53BP1 decreased the viability and the clonogenicity, and induced G2/M arrest and apoptosis of the treated cells. The protein expression of Bax, P21 and caspase-3 was upregulated, while the levels of Bcl-2 and p-Akt were reduced to a statistically significant level. In contrast, deregulation of 53BP1 significantly increased proliferative ability. Collectively, our data suggest that 53BP1 is involved in several important steps in controlling cell proliferation and growth and preventing tumor development.
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Copy and paste a formatted citation
Spandidos Publications style
Hong S, Li X, Zhao Y, Yang Q and Kong B: 53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway. Oncol Rep 27: 1251-1257, 2012.
APA
Hong, S., Li, X., Zhao, Y., Yang, Q., & Kong, B. (2012). 53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway. Oncology Reports, 27, 1251-1257. https://doi.org/10.3892/or.2012.1641
MLA
Hong, S., Li, X., Zhao, Y., Yang, Q., Kong, B."53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway". Oncology Reports 27.4 (2012): 1251-1257.
Chicago
Hong, S., Li, X., Zhao, Y., Yang, Q., Kong, B."53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway". Oncology Reports 27, no. 4 (2012): 1251-1257. https://doi.org/10.3892/or.2012.1641
Copy and paste a formatted citation
x
Spandidos Publications style
Hong S, Li X, Zhao Y, Yang Q and Kong B: 53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway. Oncol Rep 27: 1251-1257, 2012.
APA
Hong, S., Li, X., Zhao, Y., Yang, Q., & Kong, B. (2012). 53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway. Oncology Reports, 27, 1251-1257. https://doi.org/10.3892/or.2012.1641
MLA
Hong, S., Li, X., Zhao, Y., Yang, Q., Kong, B."53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway". Oncology Reports 27.4 (2012): 1251-1257.
Chicago
Hong, S., Li, X., Zhao, Y., Yang, Q., Kong, B."53BP1 suppresses tumor growth and promotes susceptibility to apoptosis of ovarian cancer cells through modulation of the Akt pathway". Oncology Reports 27, no. 4 (2012): 1251-1257. https://doi.org/10.3892/or.2012.1641
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