使用分裂-Ugi反应合成可离子化脂聚合物,用于肺部输送各种大小的RNA和基因编辑
bioRxiv : the preprint server for biology
|June 25, 2024
概括
研究人员开发了用于高效的mRNA输送的新型阴阳性脂聚合物,显示了肺向和治疗癌症和囊性纤维化模型的治疗结果的显著改善,毒性低.
科学领域:
- 生物材料科学 生物材料科学
- 基因疗法交付 基因疗法交付
- 纳米技术 纳米技术
背景情况:
- 开发有效和安全的核酸治疗药物,如mRNA的传递系统,对于基因疗法至关重要.
- 聚乙烯 (如聚乙烯胺) 等离子聚合物得到了广泛的研究,但通常面临着毒性和向传递的挑战.
- 多元分离-Ugi反应为合成各种聚合物结构提供了一种快速的方法.
研究的目的:
- 开发一种多功能和高效的平台,用于使用新型阴离子脂聚合物进行全身mRNA输送.
- 建立结构-活性关系,以增强内体逃逸和转染.
- 在疾病模型中评估脂聚合物-脂质混合纳米颗粒的治疗疗效和安全性.
主要方法:
- 通过多元组件分裂-Ugi反应合成155种阴离子聚乙烯 (胺) 衍生物的库.
- 将聚合物制成多重复和脂聚合物-脂质混合纳米粒子.
- 评估mRNA传递效率,内体逃生,以及肺和免疫细胞中的传染.
- 在路易斯肺癌和囊性纤维化模型中评估治疗效果.
- 在体内基因编辑研究使用CRISPR-Cas9和PD-1在T细胞中淘汰.
主要成果:
- 合成了155种功能性电离性脂聚合物的库.
- 与体内-JetPEI相比,脂质聚合物-脂质混合纳米颗粒在全身肺部mRNA输送方面得到了300倍的改善.
- 成功治疗IL-12mRNA延迟了易斯肺癌的进展.
- 在囊性纤维化模型中恢复功能性CFTR蛋白和化物分泌.
- 在肺组织和体内T细胞PD-1淘汰赛中有效地传递CRISPR-Cas9RNA载荷用于基因编辑.
结论:
- 开发的脂聚合物-脂质混合纳米颗粒代表了系统mRNA输送的多功能和高效的平台.
- 这个平台显示出治疗各种疾病的巨大潜力,包括癌症和囊性纤维化等遗传疾病.
- 这种方法使得精确的基因编辑和免疫细胞的调制成为可能,开辟了基因治疗的新途径.
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