Doping Hydroxylated Cationic Lipid into PEGylated Cerasome Boosts in Vivo siRNA Transfection Efficacy

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• 作者：Yanyan Li ; Shuquan Zheng ; Xiaolong Liang ; Yushen Jin ; Yidi Wu ; Huichen Bai ; Renfa Liu ; Zhifei Dai ; Zicai Liang ; Tiejun Shi
• 刊名：Bioconjugate Chemistry
• 出版年：2014
• 出版时间：November 19, 2014
• 年：2014
• 卷：25
• 期：11
• 页码：2055-2066
• 全文大小：820K
• ISSN：1520-4812

文摘

The therapeutic application of small interfering RNA (siRNA) requires safe nanocarriers for specific and efficient delivery in vivo. Herein, PEGylated cationic cerasomes (PCCs) were fabricated by doping a cationic lipid with a hydroxyl group into nanohybrid cerasomes. Multiple properties of PCCs provide a solution to many of the limitations associated with current platforms for the delivery of siRNA. The polyorganosiloxane surface imparts PCCs with higher morphological stability than conventional liposomes. The PEGylation of the cationic cerasome could protect the cerasome nanoparticles from agglomeration and macrophage capture, reduce protein absorption, and consequently prolong the blood circulating time and enhance the siRNA delivery efficiency. In addition, incorporation of the lipid containing a hydroxyl group further facilitates endosome release. Moreover, PCCs were further used to transport siRNA into the cytosol primarily via endocytosis. When applied to systemic administration, PCCs have demonstrated effective delivery into the liver and preferential uptake by hepatocytes in mice, thereby leading to high siRNA gene-silencing activity. All these results show potential therapeutic applications of PCCs-mediated delivery of siRNA for liver diseases.