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Article

Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice

  • Authors:
    • Yunfang Sun
  • View Affiliations / Copyright

    Affiliations: Department of Microbiology, Shandong Medical College, Linyi, Shandong 276002, P.R. China
  • Pages: 645-650
    |
    Published online on: June 28, 2012
       https://doi.org/10.3892/mmr.2012.973
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Abstract

The aim of this study was to investigate the effects of gene therapy using a recombinant plasmid encoding human interleukin-12 (rIL-12, pcDNA6-p70) on transplanted tumors in mice. Tumor-bearing mice were transplanted with sarcoma‑180 (S-180) cells and randomly divided into three groups of 10 mice with each group receiving a separate treatment. Following this, pcDNA6-p70 (dissolved in purified water; 100 µg/mouse), cyclophosphamide (dissolved in 0.9% saline; 40 mg/kg) or 0.9% saline (100 µl/mouse) was directly injected into the tumors on the 4th, 7th, 10th, 14th and 17th days following transplantation of the S-180 cells. Mice survival time was monitored and surviving mice were sacrificed on the 21st day. In addition to survival time, tumor volume, NK cell activity, spleen lymphocyte proliferation and IFN-γ production were investigated. The mice were also monitored for any adverse effects regarding the administration of pcDNA6-p70. Our results demonstrated that pcDNA6-p70 prolongs the survival time of tumor-bearing mice, decreases tumor size (P<0.01) and increases the proliferative response of spleen cells, the activity of NK cells and the serum level of IFN-γ. There were no significant adverse effects caused by the administration of pcDNA6-p70. The results of the present study support the hypothesis that gene therapy using the rIL-12 plasmid exerts a therapeutic effect in tumor models by triggering antitumor cellular immunity.
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Copy and paste a formatted citation
Spandidos Publications style
Sun Y: Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice. Mol Med Rep 6: 645-650, 2012.
APA
Sun, Y. (2012). Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice. Molecular Medicine Reports, 6, 645-650. https://doi.org/10.3892/mmr.2012.973
MLA
Sun, Y."Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice". Molecular Medicine Reports 6.3 (2012): 645-650.
Chicago
Sun, Y."Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice". Molecular Medicine Reports 6, no. 3 (2012): 645-650. https://doi.org/10.3892/mmr.2012.973
Copy and paste a formatted citation
x
Spandidos Publications style
Sun Y: Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice. Mol Med Rep 6: 645-650, 2012.
APA
Sun, Y. (2012). Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice. Molecular Medicine Reports, 6, 645-650. https://doi.org/10.3892/mmr.2012.973
MLA
Sun, Y."Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice". Molecular Medicine Reports 6.3 (2012): 645-650.
Chicago
Sun, Y."Therapeutic effect of recombinant plasmid-encoded human interleukin-12 in tumor-bearing mice". Molecular Medicine Reports 6, no. 3 (2012): 645-650. https://doi.org/10.3892/mmr.2012.973
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