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Article

Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1

  • Authors:
    • Liang Yang
    • Ren Liu
    • Hong‑Bin Ma
    • Ming‑Zhen Ying
    • Ya‑Jie Wang
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China, Department of Anesthesiology, Fuzhou General Hospital, Fuzhou, Fujian 350025, P.R. China, Second Department of Hepatic Internal Medicine, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
  • Pages: 1473-1476
    |
    Published online on: June 19, 2015
       https://doi.org/10.3892/ol.2015.3394
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Abstract

The aims of the present study were to investigate the effect of overexpressed exogenous glutathione S‑transferase π 1 (GSTP1) gene on the radiosensitivity of the HeLa human cervical cancer cell line and conduct a preliminarily investigation into the underlying mechanisms of the effect. The full‑length sequence of human GSTP1 was obtained by performing a polymerase chain reaction (PCR) using primers based on the GenBank sequence of GSTP1. Subsequently, the gene was cloned into a recombinant eukaryotic expression plasmid, and the resulting construct was confirmed by restriction analysis and DNA sequencing. A HeLa cell line that was stably expressing high levels of GSTP1 was obtained through stable transfection of the constructed plasmids using lipofectamine and screening for G418 resistance, as demonstrated by reverse transcription‑PCR. Using the transfected HeLa cells, a colony formation assay was conducted to detect the influence of GSTP1 overexpression on the cell radiosensitivity. Furthermore, flow cytometry was used to investigate the effect of GSTP1 overexpression on cell cycle progression, with the protein expression levels of the cell cycle regulating factor cyclin B1 detected using western blot analysis. Colony formation and G2/M phase arrest in the GSTP1‑expressing cells were significantly increased compared with the control group (P<0.01). In addition, the expression of cyclin B1 was significantly reduced in the GSTP1‑expressing cells. These results demonstrated that increased expression of GSTP1 inhibits radiosensitivity in HeLa cells. The mechanism underlying this effect may be associated with the ability of the GSTP1 protein to reduce cyclin B1 expression, resulting in significant G2/M phase arrest.
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Copy and paste a formatted citation
Spandidos Publications style
Yang L, Liu R, Ma HB, Ying MZ and Wang YJ: Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1. Oncol Lett 10: 1473-1476, 2015.
APA
Yang, L., Liu, R., Ma, H., Ying, M., & Wang, Y. (2015). Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1. Oncology Letters, 10, 1473-1476. https://doi.org/10.3892/ol.2015.3394
MLA
Yang, L., Liu, R., Ma, H., Ying, M., Wang, Y."Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1". Oncology Letters 10.3 (2015): 1473-1476.
Chicago
Yang, L., Liu, R., Ma, H., Ying, M., Wang, Y."Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1". Oncology Letters 10, no. 3 (2015): 1473-1476. https://doi.org/10.3892/ol.2015.3394
Copy and paste a formatted citation
x
Spandidos Publications style
Yang L, Liu R, Ma HB, Ying MZ and Wang YJ: Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1. Oncol Lett 10: 1473-1476, 2015.
APA
Yang, L., Liu, R., Ma, H., Ying, M., & Wang, Y. (2015). Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1. Oncology Letters, 10, 1473-1476. https://doi.org/10.3892/ol.2015.3394
MLA
Yang, L., Liu, R., Ma, H., Ying, M., Wang, Y."Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1". Oncology Letters 10.3 (2015): 1473-1476.
Chicago
Yang, L., Liu, R., Ma, H., Ying, M., Wang, Y."Radiosensitivity in HeLa cervical cancer cells overexpressing glutathione S-transferase π 1". Oncology Letters 10, no. 3 (2015): 1473-1476. https://doi.org/10.3892/ol.2015.3394
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