A one-pot modular assembly strategy for triple-play enhanced cytosolic siRNA delivery. (21st December 2018)

• Record Type: Journal Article
• Authors: Xie, Daping; Du, Junjie; Bao, Moxyel; Zhou, Anwei; Tian, Chunli; Xue, Lingjing; Ju, Caoyun; Shen, Jian; Zhang, Can
• Is Part Of: Biomaterials science. Volume 7:Number 3(2019)
• Page Start: 901
• Page End: 913
• Publication Date: 2018-12-21
• Subjects: Biomedical materials -- Periodicals; 610.28
• DOI: 10.1039/c8bm01454j
• Languages: English
• ISSNs: 2047-4830

Abstract

Abstract : Robust efficiency for cytosolic small interfering RNA (siRNA) delivery is of great importance for effective gene therapy. Abstract : Robust efficiency for cytosolic small interfering RNA (siRNA) delivery is of great importance for effective gene therapy. To significantly improve the cytosolic siRNA delivery, a "one-pot modular assembly" strategy is developed to assemble a triple-play enhanced cytosolic siRNA delivery system via a facile and innocuous copper-free click reaction. Specifically, three modules are prepared including octreotide for receptor-mediated endocytosis, a cell-penetrating peptide (CPP) for cell penetration, and glutamic acid for the charge-reversal property. All three modules with distinct facilitating endocytosis effects are expediently assembled on the surface of the siRNA/liposome complex to fabricate a multifunctional integrated siRNA delivery system (OCA-CC). OCA-CC has been demonstrated to have enhanced cytosolic delivery and superior gene-silencing efficiency in multiple tumor cells due to the combined effects of all the three modules. High levels of survivin-silencing are also achieved by OCA-CC on orthotopic human breast cancer (MCF-7)-bearing mice accompanied by significant tumor inhibition. This research provides a facile strategy to produce safe and tunable siRNA delivery systems for effective gene therapy and to facilitate the development of multifunctional siRNA vectors.