Inhibition of establishment of hepatic metastasis in mice by combination gene therapy using both herpes simplex virus-thymidine kinase and granulocyte macrophage-colony stimulating factor genes in murine colon cancer

Cancer Gene Ther. 1997 Nov-Dec;4(6):339-44.


Herpes simplex virus-thymidine kinase (HS-tk) gene therapy with ganciclovir (GCV) treatment has been reported to inhibit the tumor growth, which is applied to the gene therapy targeted to the malignant brain tumor. To suppress the tumor growth completely, the authors designed the HS-tk gene therapy in combination with granulocyte macrophage-colony stimulating factor (GMCSF) gene using the hepatic metastatic model of murine colon cancer. The transduction of the HS-tk gene in combination with the GMCSF gene, followed by GCV, showed a complete inhibition of hepatic metastases of murine colon cancer, which was significantly superior to that of HS-tk gene alone. The growth of cancer cells transduced with both HS-tk and GMCSF genes was inhibited in vitro, and long-lasting antitumor immunity after hepatic metastasis of cancer cells transduced with both HS-tk and GMCSF genes was acquired. It is suggested that HS-tk gene therapy in combination with the GMCSF gene is effective for the complete inhibition of hepatic metastasis of murine colon cancer.

MeSH terms

  • Animals
  • Cell Division / drug effects
  • Colonic Neoplasms / pathology*
  • Colonic Neoplasms / therapy*
  • Female
  • Ganciclovir / therapeutic use*
  • Genetic Therapy / methods*
  • Genetic Vectors
  • Granulocyte-Macrophage Colony-Stimulating Factor / biosynthesis*
  • Granulocyte-Macrophage Colony-Stimulating Factor / genetics
  • Liver Neoplasms / pathology
  • Liver Neoplasms / secondary*
  • Liver Neoplasms / therapy
  • Mice
  • Mice, Inbred BALB C
  • Neoplasm Metastasis
  • Recombinant Proteins / biosynthesis
  • Retroviridae
  • Simplexvirus / enzymology
  • Simplexvirus / genetics*
  • Survival Rate
  • Thymidine Kinase / biosynthesis*
  • Thymidine Kinase / genetics
  • Time Factors
  • Tumor Cells, Cultured


  • Recombinant Proteins
  • Granulocyte-Macrophage Colony-Stimulating Factor
  • Thymidine Kinase
  • Ganciclovir