Oncolytic virotherapy for ovarian carcinomatosis using a replication-selective vaccinia virus armed with a yeast cytosine deaminase gene

S. Chalikonda, M. H. Kivlen, M. E. O'Malley, X. D. Dong, J. A. McCart, M. C. Gorry, X. Y. Yin, C. K. Brown, H. J. Zeh, Z. S. Guo, D. L. Bartlett

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

In this study, we assessed the ability of a highly tumor-selective oncolytic vaccinia virus armed with a yeast cytosine deaminase gene to infect and lyse human and murine ovarian tumors both in vitro and in vivo. The virus vvDD-CD could infect, replicate in and effectively lyse both human and mouse ovarian cancer cells in vitro. In two different treatment schedules involving either murine MOSEC or human A2780 ovarian carcinomatosis models, regional delivery of vvDD-CD selectively targeted tumor cells and ovarian tissue, effectively delaying the development of either tumor or ascites and leading to significant survival advantages. Oncolytic virotherapy using vvDD-CD in combination with the prodrug 5-fluorocytosine conferred an additional long-term survival advantage upon tumor-bearing immunocompetent mice. These findings demonstrate that a tumor-selective oncolytic vaccinia combined with gene-directed enzyme prodrug therapy is a highly effective strategy for treating advanced ovarian cancers in both syngeneic mouse and human xenograft models. Given the biological safety, tumor selectivity and oncolytic potency of this armed oncolytic virus, this dual therapy merits further investigation as a promising new treatment for metastatic ovarian cancer.

Original languageEnglish (US)
Pages (from-to)115-125
Number of pages11
JournalCancer Gene Therapy
Volume15
Issue number2
DOIs
StatePublished - Feb 1 2008

    Fingerprint

Keywords

  • Cytosine deaminase
  • Ovarian cancer
  • Peritoneal carcinomatosis
  • Poxvirus
  • Suicide gene

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Cancer Research

Cite this

Chalikonda, S., Kivlen, M. H., O'Malley, M. E., Dong, X. D., McCart, J. A., Gorry, M. C., Yin, X. Y., Brown, C. K., Zeh, H. J., Guo, Z. S., & Bartlett, D. L. (2008). Oncolytic virotherapy for ovarian carcinomatosis using a replication-selective vaccinia virus armed with a yeast cytosine deaminase gene. Cancer Gene Therapy, 15(2), 115-125. https://doi.org/10.1038/sj.cgt.7701110