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Front Biosci. 2008 May 1;13:3488-93.

Vector-based delivery of siRNAs: in vitro and in vivo challenges.

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1
Institute for Cancer Research, Department of Immunology, Molecular Medicine Group, Rikshospitalet-Radiumhospitalet Medical Centre, Montebello 0310 Oslo, Norway.

Abstract

RNA interference (RNAi) induced by small interfering RNAs (siRNAs) has recently become a powerful tool to knock-down gene expression in a sequence-specific manner. In addition to chemically made siRNAs, stable expression of siRNA in the form of short hairpin RNAs (shRNAs) expressed from an RNA polymerase III (pol III) promoter is now widely used approach for the application of RNAi in mammalian cells. However, long-term suppression using constitutive promoters can be problematic and emerging evidence indicates that siRNAs can cause several side effects in human cells. Here we review the recent advances in developing controllable expression vectors in order to accelerate the therapeutic applications of RNAi.

PMID:
18508450
[Indexed for MEDLINE]

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