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Critical Reviews™ in Therapeutic Drug Carrier Systems
IF: 2.9 5-Year IF: 3.72 SJR: 0.736 SNIP: 0.818 CiteScore™: 4.6

ISSN Print: 0743-4863
ISSN Online: 2162-660X

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Critical Reviews™ in Therapeutic Drug Carrier Systems

DOI: 10.1615/CritRevTherDrugCarrierSyst.v14.i2.30
34 pages

Lipidic Vector Systems for Gene Transfer

Robert J. Lee
Endocyte, Inc., 1291 E Cumberland Ave., West Lafayette, IN 47906
Leaf Huang
Laboratory of Drug Targeting, Department of Pharmacology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261


Clinical application of gene therapy depends on the development of suitable gene transfer vehicles (vectors). Although generally not as efficient as viral vectors, nonviral systems such as lipidic vectors have the potential advantages of being less toxic, nonrestrictive in cargo DNA size, potentially targetable, and easy to produce in relatively large amounts. More important, lipidic vectors generally lack immunogenicity, allowing repeated in vivo transfection using the same vector. In this paper, we will attempt to summarize some of the recent advances in lipidic gene delivery vectors. Three types of lipidic gene transfer vectors are described: 1) DNA/cationic liposome complexes, 2) DNA encapsulated in neutral or anionic liposomes, and 3) liposome-en-trapped, polycation-condensed DNA (LPDI and LPDII). We review the various factors affecting vector structure and gene delivery efficiency, and we discuss the possible mechanisms of gene transfer and their implications in vector design.

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