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Suicide gene therapy for urogenital cancer: current outcome and prospects

Y Nasu1, N Kusaka, T Saika

  • 1Department of Urology, Okayama University Medical School, Shikata, Okayama, Japan. ynasu@med.okayama-u.ac.jp

Molecular Urology
|May 15, 2002
PubMed

Insights

Gene therapy using herpes simplex virus thymidine kinase (HSV-tk) and ganciclovir (GCV) shows promise for various cancers. While safe and effective in prostate cancer, challenges in gene delivery and expression remain for clinical application.

Area of Science:

  • Oncology
  • Gene Therapy
  • Virology

Background:

  • Viral-mediated gene transfer of herpes simplex virus thymidine kinase (HSV-tk) confers sensitivity to ganciclovir (GCV) in diverse tumor cells.
  • HSV-tk/GCV suicide gene therapy has been explored in numerous clinical protocols, particularly for prostate cancer.

Purpose of the Study:

  • To review the current status and challenges of HSV-tk/GCV suicide gene therapy for cancer treatment.
  • To highlight the safety and anticancer activity demonstrated in human prostate cancer gene therapy studies.

Main Methods:

  • Review of existing clinical protocols and research on HSV-tk/GCV suicide gene therapy.
  • Analysis of safety and efficacy data from studies, including those at Baylor College of Medicine.

Main Results:

  • HSV-tk gene transfer enables ganciclovir sensitivity in brain, prostate, lung, liver, and other cancers.
  • The first demonstration of safety and anticancer activity of HSV-tk/GCV therapy in human prostate cancer was achieved.

Conclusions:

  • HSV-tk/GCV gene therapy is a promising approach for various cancers, with demonstrated safety and efficacy in prostate cancer.
  • Key challenges including systemic delivery, specific gene introduction, and expression must be addressed for clinical translation.

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