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  • Title: Advances in cancer gene therapy: tumor-targeted delivery of therapeutic pDNA, siRNA, and dsRNA nucleic acids.
    Author: Wagner E.
    Journal: J BUON; 2007 Sep; 12 Suppl 1():S77-82. PubMed ID: 17935282.
    Abstract:
    Nonviral gene delivery systems are attractive because of their simplicity. One component (a natural or synthetic piece of nucleic acid) or two components (lipoplexes or polyplexes consisting of nucleic acid formulated with one cationic agent) may be sufficient. The simple design however entails also their limitation - a far lower efficiency than viral vectors, and lack of targeting specificity. First versions of more sophisticated "synthetic viruses" for plasmid DNA (pDNA), small interference RNA (siRNA), and dsRNA delivery have come into existence, and encouraging therapeutic effects in mouse tumor models have been observed. The development into pre-programmed bioresponsive systems, containing targeting ligands and shielding elements, and membrane-active modules promoting intracellular release is a fundamental part of the optimization process. Generation of better defined, biocompatible polymers will be an additional key aspect for successful clinical development of anticancer nucleic acid therapies.
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