PMID: 8607027Feb 1, 1996Paper

Noninfectious gene transfer and expression systems for cancer gene therapy

Seminars in Oncology
M J Cooper

Abstract

Gene therapy provides a significant opportunity to devise novel strategies for the control or cure of cancer. Success of this modality will ultimately depend on the ability to express a therapeutic gene of interest at high levels, and specific gene delivery to targeted tumor cells will minimize toxicities. Although current gene therapy trials typically use viral-based, infectious vectors to express suitable target genes in human cancer cells, these vectors have significant limitations in their expression characteristics, lack of specificity in targeting tumor cells for gene transfer, and safety concerns regarding induction of secondary malignancies and recombination to form replication-competent virus. These limitations have refocused efforts to develop noninfectious gene transfer technologies for in vivo gene delivery of plasmid-based expression vectors. This article reviews recent developments in non-infectious gene transfer techniques, including liposome and receptor-mediated methods, which can efficiently deliver plasmid vectors into tumor cells in vivo. Additionally, strategies are reviewed for efficiently expressing target genes in tumor cells, including use of tissue-specific promoters, inducible promoters, and replicati...Continue Reading

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