主链二硫化物结合的阴离子聚碳酸盐用于局部mRNA输送
Xujin Gong1, Yu Yang1, Zhuoqun Wang1
1School of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong 250117, People's Republic of China; NHC Key Laboratory of Biotechnology Drugs (Shandong Academy of Medical Sciences), Jinan, Shandong 250117, People's Republic of China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan, Shandong 250117, People's Republic of China.
International journal of pharmaceutics
|September 16, 2025
概括
研究人员开发了一种新型的主链阴离子聚碳酸盐 (Bn-p(NC-co-SSC)) 用于信使RNA (mRNA) 传递. 这种双重pH和还原反应的聚合物显示出高的转染效率和生物相容性,为疫苗和蛋白质疗法提供了一个有前途的平台.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 基因传递系统是基因传递系统.
背景情况:
- 聚碳酸被探索为可生物降解,低毒性基因载体.
- 主链阴离子聚碳酸盐与刺激响应组用于mRNA传递是未被充分研究的.
- 现有的矢量往往集中在悬挂的阴性侧链上,限制了设计灵活性.
研究的目的:
- 为了合成和描述用于mRNA输送的新型主链阴离子聚碳酸盐.
- 评估这些聚合物的刺激反应性降解和mRNA复合能力.
- 评估开发的mRNA输送系统的转染效率,生物相容性和体内性能.
主要方法:
- 通过环开聚合合成主链阴离子聚碳酸盐 (Bn-pNC 和 Bn-p(NC-co-SSC).
- 聚合物降解谱的表征 (pH-和降解响应).
- 用mRNA形成和表征多复合体,随后进行体外 (HEK 293T细胞) 和体内 (肌内,鼻内) 传染研究.
主要成果:
- Bn-pNC显示pH响应性降解; Bn-p(NC-co-SSC) 显示双重pH和降解响应性降解.
- 这两种聚合物都形成了纳米大小的,带有mRNA的正电荷的多重复合体.
- 与商业聚乙烯胺相比,Bn-p (NC-co-SSC) 多复合体在体外和体内表现出更高的转染效率和生物相容性.
- 在体内研究表明,在注射部位的有效转染和持续的蛋白质表达,作为局部药物仓库.
结论:
- 主链阴离子聚碳酸Bn-p ((NC-co-SSC) 是一种安全有效的mRNA输送系统.
- 双重的pH和降解反应降解性增强了治疗潜力.
- 这种聚合物平台对疫苗开发和长效蛋白疗法具有前景.
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