通过纳米体功能化的脂质纳米粒子传递细胞特异的mRNA
Linglong Chen1, Hans Van Der Weken1, Olivier Zwaenepoel2
1Laboratory of Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
概括
研究人员开发了向的信使RNA脂质纳米粒子 (mRNA-LNP) 传递系统. 这些新型系统增强了mRNA向特定细胞的传递,提高了基于mRNA的治疗方法的治疗疗效和安全性.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 分子生物学分子生物学
背景情况:
- 使者RNA脂质纳米粒子 (mRNA-LNP) 配方是各种疗法的强大平台.
- 一个主要的限制是缺乏有针对性的输送,阻碍了有效性和安全性.
- 细胞特异性传递对于推进mRNA治疗应用至关重要.
研究的目的:
- 设计一个具有有针对性交付能力的新型mRNA-LNP平台.
- 为了使脂质纳米颗粒具有功能,纳米体针对肠道上皮细胞上的aminopeptidase N (APN).
- 通过有针对性的功能化来证明mRNA有效载荷的增强细胞吸收和传递.
主要方法:
- 脂质纳米粒子与特定于aminopeptidase N (APN) 的纳米体 (VHH) 功能化.
- 在大肠杆菌中设计了纳米体,以结合亚齐多-氨酸以进行点击化学结合.
- 使用SPAAC和IEDDA点击化学实现了向脂纳米颗粒的合.
- 针对性输送的有效性在猪肠道器官和体内模型中进行了评估.
主要成果:
- 针对APN的mRNA-LNP被APN表达细胞选择性吸收.
- 功能化的LNP增强了mRNA向目标细胞的传递.
- 纳米体介导向促进了通过肠道上皮屏障的转细胞形成.
- 该平台在体外和体外模型中都表现出成功的交付.
结论:
- 开发的纳米体功能化的mRNA-LNP平台能够有针对性地传送mRNA有效载荷.
- 这种可编程系统增强了细胞吸收和通过肠道屏障传递.
- 该方法为细胞特异性mRNA传递提供了一种多功能解决方案,可跨物种适应.
- 这项技术对推进基于mRNA的疫苗和治疗方法具有重大潜力.
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