Eur J Pharm Sci. 2001 Apr;13(1):85-9.

Intracellular control of gene trafficking using liposomes as drug carriers.

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Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, 060-0812, Sapporo, Japan

Abstract

The objective of this review is to summarize some of the critical barriers in gene delivery and recent progress in overcoming such barriers using non-viral carrier systems. Receptor-mediated endocytosis is generally considered to be a principal entering pathway. Therefore, endosomal escape is an essential step for achieving efficient transfection. The nuclear membrane is also a critical barrier in gene delivery and the application of the nuclear localization signal is discussed, based on recent strategies. It is essential to optimize the carrier system, in order to enhance the transfection ability equivalent to a viral system. The importance of developing an intracellular pharmacokinetic model of genes is emphasized in the optimization of non-viral carrier systems.

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Intracellular control of gene trafficking using liposomes as drug carriers.

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