The tissue plasminogen activator gene promoter: a novel tool for radiogenic gene therapy of the prostate?

L. Marignol, Tracy Robson, Helen McCarthy, J. Worthington, M. Murray, D. Hollywood, M. Lawler, David Hirst

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Radiation therapy is a treatment modality routinely used in cancer management so it is not unexpected that radiation-inducible promoters have emerged as an attractive tool for controlled gene therapy. The human tissue plasminogen activator gene promoter (t-PA) has been proposed as a candidate for radiogenic gene therapy, but has not been exploited to date. The purpose of this study was to evaluate the potential of this promoter to drive the expression of a reporter gene, the green fluorescent protein (GFP), in response to radiation exposure. METHODS: To investigate whether the promoter could be used for prostate cancer gene therapy, we initially transfected normal and malignant prostate cells. We then transfected HMEC-1 endothelial cells and ex vivo rat tail artery and monitored GFP levels using Western blotting following the delivery of single doses of ionizing radiation (2, 4, 6 Gy) to test whether the promoter could be used for vascular targeted gene therapy. RESULTS: The t-PA promoter induced GFP expression up to 6-fold in all cell types tested in response to radiation doses within the clinical range. CONCLUSIONS: These results suggest that the t-PA promoter may be incorporated into gene therapy strategies driving therapeutic transgenes in conjunction with radiation therapy.
Original languageEnglish
Pages (from-to)1032-1038
Number of pages7
JournalThe Journal of Gene Medicine
VolumeE Pub
Issue number9
DOIs
Publication statusPublished - Jul 2008

ASJC Scopus subject areas

  • Genetics
  • Molecular Biology
  • Molecular Medicine
  • Genetics(clinical)
  • Drug Discovery

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