针对瘤向的siRNA输送的协作组装策略
Qiong Sun1, Zisheng Kang1, Lingjing Xue1
1State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, Nanjing 210009, China.
Journal of the American Chemical Society
|April 15, 2015
概括
一种新的协作组装方法增强了siRNA传递系统,提高了安全性和效率. 这种方法可以创建稳定,功能化的纳米粒子,用于针对性基因沉默.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 基因治疗 基因治疗
背景情况:
- 传统的siRNA传递系统通常仅依赖于物理组装,限制了它们的安全性,效率和灵活性.
- 对于基于脂质的复合物来说,高阴离子特性至关重要,以达到相当大的siRNA负载能力.
研究的目的:
- 开发一种新的"协作组装"方法来合成先进的siRNA传递系统.
- 提高siRNA载体的安全性,效率,稳定性和准能力.
主要方法:
- 将静电驱动的物理组件与点击反应介导的化学组件相结合.
- 通过点击化学,用氨酸 (HA) 化学修饰一个阴离子脂质聚合物复合物.
- 评估开发的纳米颗粒的体内稳定性,瘤向性和基因沉默功效.
主要成果:
- 与物理组装系统相比,协作组装方法产生了一种脂质聚合物混合纳米粒子 (RSC-HA),具有增强的体内稳定性和瘤向性.
- 通过点击化学的化学修饰屏蔽了正电荷,降低了毒性并改善了血液稳定性,而不影响siRNA结合.
- 开发的系统证明了在细胞吸收时控制的siRNA释放,导致增强的基因沉默.
结论:
- 协作组装策略为siRNA交付提供了一个安全,稳定和可功能化的平台.
- 这种混合方法克服了纯粹物理组装的局限性,为改进的治疗应用铺平了道路.
- 嵌入的多元离子的预功能化允许定制的生物特征,如延长血液循环和瘤向.
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