通过细胞外囊泡-脂质体杂合纳米粒子实现功能性 siRNA 的递呈。
Functional siRNA Delivery by Extracellular Vesicle-Liposome Hybrid Nanoparticles.
机构信息
CDL Research, University Medical Center Utrecht, Utrecht, 3584 CX, The Netherlands.
Department of Cardiology, Laboratory of Experimental Cardiology, University Medical Center Utrecht, Utrecht, 3584 CX, The Netherlands.
出版信息
Adv Healthc Mater. 2022 Mar;11(5):e2101202. doi: 10.1002/adhm.202101202. Epub 2021 Aug 11.
The therapeutic use of RNA interference is limited by the inability of siRNA molecules to reach their site of action, the cytosol of target cells. Lipid nanoparticles, including liposomes, are commonly employed as siRNA carrier systems to overcome this hurdle, although their widespread use remains limited due to a lack of delivery efficiency. More recently, nature's own carriers of RNA, extracellular vesicles (EVs), are increasingly being considered as alternative siRNA delivery vehicles due to their intrinsic properties. However, they are difficult to load with exogenous cargo. Here, EV-liposome hybrid nanoparticles (hybrids) are prepared and evaluated as an alternative delivery system combining properties of both liposomes and EVs. It is shown that hybrids are spherical particles encapsulating siRNA, contain EV-surface makers, and functionally deliver siRNA to different cell types. The functional behavior of hybrids, in terms of cellular uptake, toxicity, and gene-silencing efficacy, is altered as compared to liposomes and varies among recipient cell types. Moreover, hybrids produced with cardiac progenitor cell (CPC) derived-EVs retain functional properties attributed to CPC-EVs such as activation of endothelial signaling and migration. To conclude, hybrids combine benefits of both synthetic and biological drug delivery systems and might serve as future therapeutic carriers of siRNA.
RNA 干扰的治疗用途受到限制,因为 siRNA 分子无法到达其作用部位,即靶细胞的细胞质。脂质纳米颗粒,包括脂质体,通常被用作 siRNA 载体系统来克服这一障碍,尽管由于缺乏递送效率,其广泛应用仍然受到限制。最近,由于其内在特性,RNA 的天然载体,即细胞外囊泡 (EVs),越来越被认为是替代 siRNA 递药载体。然而,它们很难装载外源性货物。在这里,制备了 EV-脂质体混合纳米颗粒 (hybrids),并将其作为一种替代递药系统进行评估,该系统结合了脂质体和 EVs 的特性。结果表明,hybrids 是包封 siRNA 的球形颗粒,含有 EV 表面标志物,并能将 siRNA 功能性递送至不同的细胞类型。与脂质体相比,hybrids 的细胞摄取、毒性和基因沉默效果等功能行为发生了改变,并且在不同的受体细胞类型中也发生了变化。此外,用心脏祖细胞 (CPC) 衍生的 EVs 制备的 hybrids 保留了归因于 CPC-EVs 的功能特性,如内皮信号激活和迁移。总之,hybrids 结合了合成和生物递药系统的优点,可能成为未来 siRNA 的治疗性载体。