Safe and efficient in vitro and in vivogene delivery: tripodal cationic lipids with programmed biodegradability
作者:Asier Unciti-Broceta、Loredana Moggio、Kevin Dhaliwal、Laura Pidgeon、Keith Finlayson、Chris Haslett、Mark Bradley
DOI:10.1039/c0jm03241g
日期:——
The therapeutic use of nucleic acids has long been heralded as a panacea of medicinal opportunity, a vision enhanced by the introduction of RNA interference technology. The Achilles heel of such an approach is the in vivo delivery of the desired nucleic acid into cells, a practice that lacks selectivity, safety and/or efficiency. Herein we report the safe and efficacious in vitro and in vivo delivery of nucleic acids using tripodal biodegradable cationic lipids. Toxicity reduction and transfection potency of these novel amphiphiles were addressed by designing the compounds to undergo complete intracellular degradation thereby enhancing cargo release while minimising toxicity and potential tissue accumulation. Compounds demonstrated high-efficiency in transfecting DNA into cells both in vitro and in vivo with no signs of toxicity, thus potentially offering a safer alternative to viral transfection for gene therapy application.
核酸的临床应用长期以来被视作医学机会的灵丹妙药,这一愿景因RNA干扰技术的引入而得到增强。这种方法的致命弱点在于将所需核酸有效地传递到细胞内的体内输送实践,缺乏选择性、安全性和/或效率。在此,我们报告了使用三足生物可降解阳离子脂质的安全有效的体外和体内核酸输送。这些新型两亲分子的毒性减少和转染效能通过设计使化合物在细胞内完全降解,从而增强了载荷释放,同时最小化了毒性和潜在的组织积累。化合物在体外和体内转染DNA到细胞中的效率很高,并没有表现出毒性迹象,因此可能为基因治疗应用提供了一种比病毒转染更安全的替代方案。