A Nonpolycationic Fully Proteinaceous Multiagent System for Potent Targeted Delivery of siRNA.
A Nonpolycationic Fully Proteinaceous Multiagent System for Potent Targeted Delivery of siRNA.
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DOI:
10.1038/mtna.2014.14
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发表时间:
2014-05-13
期刊:
影响因子:
--
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Protein-based methods of targeted short-interfering RNA (siRNA) delivery have the potential to solve some of the problems faced by nanoparticle-based methods, such as poor pharmacokinetics and biodistribution, low tumor penetration, and polydispersity. However, protein-based targeted delivery has been limited to fusion proteins with polycationic peptides as siRNA carriers, whose high charge density in some cases results in undesirable biophysical and in vivo properties. Here, we present a fully proteinaceous, multiagent approach for targeted siRNA delivery to epidermal growth factor receptor (EGFR), using a nonpolycationic carrier for siRNA. Each agent contributes a fundamentally different mechanism of action that work together for potent targeted RNA interference. The first agent is an EGFR-targeted fusion protein that uses a double-stranded RNA-binding domain as a nonpolycationic siRNA carrier. This double-stranded RNA-binding domain fusion protein can deliver siRNA to the endosomes of an EGFR-expressing cell line. A second agent delivers the cholesterol-dependent cytolysin, perfringolysin O, in a targeted manner, which enhances the endosomal escape of siRNA and induces gene silencing. A third agent that clusters EGFR increases gene-silencing potency and decreases cytolysin toxicity. Altogether, this system is potent, with only 16 nmol/l siRNA required for gene silencing and a therapeutic window that spans two orders of magnitude of targeted cytolysin concentrations.
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影响因子:
2.7
作者:
Geiser, M;Cèbe, R;Schmitz, R
通讯作者:
Schmitz, R
影响因子:
4.9
作者:
Alexis F;Pridgen E;Molnar LK;Farokhzad OC
通讯作者:
Farokhzad OC
DOI:
10.1097/cji.0b013e3181b528da
发表时间:
2009-11
期刊:
Journal of immunotherapy (Hagerstown, Md. : 1997)
影响因子:
--
作者:
Liu DV;Maier LM;Hafler DA;Wittrup KD
通讯作者:
Wittrup KD
DOI:
10.1038/mtna.2012.43
发表时间:
2012-11-13
期刊:
Molecular therapy. Nucleic acids
影响因子:
--
作者:
通讯作者:
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影响因子:
3.4
作者:
Rosado CJ;Kondos S;Bull TE;Kuiper MJ;Law RH;Buckle AM;Voskoboinik I;Bird PI;Trapani JA;Whisstock JC;Dunstone MA
通讯作者:
Dunstone MA