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| Home > Workflow collections > Publication Charges > Changing the Way of Entrance: Highly Efficient Transfer of mRNA and siRNA via Fusogenic Nano-Carriers |
| Journal Article | FZJ-2018-05214 |
; ; ; ;
2019
American Scientific Publ.
Valencia, Calif.
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Please use a persistent id in citations: doi:10.1166/jbn.2019.2663
Abstract: Transferring nucleic acids into mammalian cells heavily influences life science for decades. While first applications mainly dealt with DNA transfer for various purposes as e.g., plasmid encoded protein expression or generation of mutant strains, subsequent applications additionally transferred RNA molecules of mainly small lengths for specific knockdown (RNAi) or site-specific genome modification (gRNA). Significant improvements in full length mRNA generation and extension of mRNA lifetimes additionally allows their use for transient expression in latest times. For all of these types of nucleic acids the most common cell incorporation method is based on complexation and subsequent endosomal uptake. This so-called lipofection can be used theoretically for almost any mammalian cell type and a tremendous number of different product compositions exist in order to deal with drawbacks as transfer efficiency, cell type selectivity, endosomal degradation, slow uptake and cytotoxicity. In contrast, new methods transfer complexed RNA molecules directly into the cytoplasm using liposomal nano-carriers that fuse with cellular plasma membranes immediately upon contact to free functional nucleic acids directly into the cytoplasm. Here, we compare both methods in detail with special focus on robustness, short- and long-term cytotoxicity, efficiency and functionality for various types of transferred RNA. Our data clearly indicate that direct RNA incorporation via fusogenic nano-carriers circumvents most endosomal uptake-based challenges, making it to a most promising alternative for nucleic acid transfer.
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