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Article

Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells

  • Authors:
    • Bo Cao
    • Zihna Zhang
    • Yuqin Zhang
    • Jiaquan Li
    • Gang Liang
    • Jianghong Ling
  • View Affiliations / Copyright

    Affiliations: Department of Traditional Chinese Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China, Experimental Center for Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China, College of Basic Medicine, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
  • Pages: 1070-1076
    |
    Published online on: August 19, 2013
       https://doi.org/10.3892/etm.2013.1264
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Abstract

Bock greenbrier rhizome, also known as Smilax china L. rhizome, induces heat clearing and detoxification and dispels wind dampness. Additionally, this Chinese medicine has been shown to function as an anticancer compound in various types of cancer. The aim of the present study was to investigate the mechanism by which Smilax china L.‑containing serum suppresses SMMC-7721 human hepatocellular carcinoma (HCC) cell growth as well as to determine its effect on the expression of DNA polymerase δ catalytic subunit gene 1 (POLD1). SMMC-7721 human HCC cells were cultured with serum containing various amounts of Smilax china L. for 24 h. The cells were also cultured in blank serum or serum containing a drug used in Western medicine (cyclophosphamide; CTX) as a positive control. HCC cell growth and proliferation were determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Cell cycle distribution and apoptosis were analyzed by flow cytometry, and the expression of POLD1 mRNA was detected by quantitative polymerase chain reaction (PCR). The number of cells following culture with Smilax china L.-containing serum was observed to be decreased. There was significant growth inhibition in the Smilax china L.-treated cells (shown in the high concentration serum group, volume fraction 30%), which was significantly different from the inhibition observed in the control group (P<0.05). Among the various cell cycle phases following culture, the percentage of cells in the S phase was significantly increased, and the percentage of cells in the G0/G1 phase was decreased; these percentages were significantly different from the percentages of the control cells (P<0.05). The results obtained following quantitative PCR showed a significant reduction in POLD1 expression. Smilax china L.-containing serum directly suppressed cell growth and induced the apoptosis of human HCC cells. However, the number of cells in the S phase was reduced. This mechanism is suggested to be associated with the suppression of POLD1 expression.
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Copy and paste a formatted citation
Spandidos Publications style
Cao B, Zhang Z, Zhang Y, Li J, Liang G and Ling J: Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells. Exp Ther Med 6: 1070-1076, 2013.
APA
Cao, B., Zhang, Z., Zhang, Y., Li, J., Liang, G., & Ling, J. (2013). Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells. Experimental and Therapeutic Medicine, 6, 1070-1076. https://doi.org/10.3892/etm.2013.1264
MLA
Cao, B., Zhang, Z., Zhang, Y., Li, J., Liang, G., Ling, J."Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells". Experimental and Therapeutic Medicine 6.4 (2013): 1070-1076.
Chicago
Cao, B., Zhang, Z., Zhang, Y., Li, J., Liang, G., Ling, J."Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells". Experimental and Therapeutic Medicine 6, no. 4 (2013): 1070-1076. https://doi.org/10.3892/etm.2013.1264
Copy and paste a formatted citation
x
Spandidos Publications style
Cao B, Zhang Z, Zhang Y, Li J, Liang G and Ling J: Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells. Exp Ther Med 6: 1070-1076, 2013.
APA
Cao, B., Zhang, Z., Zhang, Y., Li, J., Liang, G., & Ling, J. (2013). Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells. Experimental and Therapeutic Medicine, 6, 1070-1076. https://doi.org/10.3892/etm.2013.1264
MLA
Cao, B., Zhang, Z., Zhang, Y., Li, J., Liang, G., Ling, J."Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells". Experimental and Therapeutic Medicine 6.4 (2013): 1070-1076.
Chicago
Cao, B., Zhang, Z., Zhang, Y., Li, J., Liang, G., Ling, J."Effect of Smilax china L.-containing serum on the expression of POLD1 mRNA in human hepatocarcinoma SMMC-7721 cells". Experimental and Therapeutic Medicine 6, no. 4 (2013): 1070-1076. https://doi.org/10.3892/etm.2013.1264
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