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酸核酸 - 协调纳米粒子

Özgür Öztürk^1,2, Anna-Lina Lessl¹, Miriam Höhn¹

¹Department of Pharmacy and Center for NanoScience (CeNS), LMU Munich, 81377, Munich, Germany.

Scientific reports

|August 30, 2023

概括

研究人员开发了基于新型核酸 (PNA) 的 (Zr) 协调纳米粒子,具有异常高的PNA负载. 这些自组装的纳米载体有效地提供治疗性PNA用于细胞中的基因拼接校正.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
生物技术是生物技术.

背景情况:

药物载体需要高负载能力,以最大限度地减少不活性物质的暴露.
由治疗分子组装的纳米载体提供了最高的负载潜力.

研究的目的:

开发基于新型核酸 (PNA) 的 (Zr) 协调纳米粒子.
在自组装纳米结构中实现超高的PNA负载能力.
评估PNA-Zr纳米颗粒作为治疗基因输送的平台.

主要方法:

PNA架构的系统变化,用于与Zr(IV) 节点的协调驱动自组装.
利用了芳香碳酸基作为易斯基和一个两步合成与[Zr4(OH) 8(H2O) 12 8+预制.
通过共聚焦激光扫描显微镜确认了细胞吸收.
在记者细胞系中评估了用于beta-环球蛋白内突变IVS2-705的反意义PNA序列的拼接切换活性.

主要成果:

在PNA-Zr纳米颗粒中达到高达70%的超高PNA负荷.
确定了纳米粒子组装的关键设计标准,包括PNA结构和合成条件.
证明了PNA-Zr纳米颗粒的有效细胞内化.
通过交付的PNA调节的拼接切换成功纠正β-环球蛋白内核突变IVS2-705.

结论:

PNA-Zr纳米颗粒代表了一种新的金属有机混合纳米材料类,具有特殊的PNA负载能力.
核酸是材料的组成部分,而不是被动加载.
这种生物活性平台为基因治疗应用提供了高度的设计灵活性.

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