Enhancement of replication of genetically engineered herpes simplex viruses by ionizing radiation: A new paradigm for destruction of therapeutically intractable tumors

S. J. Advani, G. S. Sibley, P. Y. Song, D. E. Hallahan, Y. Kataoka, B. Roizman, R. R. Weichselbaum

Research output: Contribution to journalArticlepeer-review

130 Scopus citations

Abstract

Human U-87 malignant glioma xenografts in mice were exposed to ionizing radiation, inoculated with a herpes simplex virus 1 mutant R3616 lacking both copies of the γ134.5 gene, or received both virus and radiation. Dual treatment caused a significantly greater reduction in volume or total regression of tumors than either radiation or infection alone. The significantly enhanced oncolytic effects of the combined treatment correlate with two- to five-fold enhanced replication in irradiated tumor cells than in tumors receiving virus only. In addition, in situ hybridization with viral DNA probes showed that infected tumor cells were the dominant landscape of irradiated tumors and much less apparent in the nonirradiated tumors administered this virus.

Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalGene therapy
Volume5
Issue number2
DOIs
StatePublished - 1998

Keywords

  • Attenuated herpesviruses
  • Malignant gliomas
  • Mouse models

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