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Comparative Study
, 60 (6), 1492-7

Fusogenic Membrane Glycoproteins as a Novel Class of Genes for the Local and Immune-Mediated Control of Tumor Growth

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  • PMID: 10749110
Comparative Study

Fusogenic Membrane Glycoproteins as a Novel Class of Genes for the Local and Immune-Mediated Control of Tumor Growth

A Bateman et al. Cancer Res.

Erratum in

  • Cancer Res 2000 Sep 1;60(17):4978

Abstract

We report here the use of viral fusogenic membrane glycoproteins (FMGs) as a new class of therapeutic genes for the control of tumor growth. FMGs kill cells by fusing them into large multinucleated syncytia, which die by sequestration of cell nuclei and subsequent nuclear fusion by a mechanism that is nonapoptotic, as assessed by multiple criteria. Direct and bystander killing of three different FMGs were at least one log more potent than that of herpes simplex virus thymidine kinase or cytosine deaminase suicide genes. Transduction of human tumor xenografts with plasmid DNA prevented tumor outgrowth in vivo, and cytotoxicity could be regulated through transcriptional targeting. Syncytial formation is accompanied by the induction of immunostimulatory heat shock proteins, and tumor-associated FMG expression in immunocompetent animals generated specific antitumor immunity.

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