在可电离性脂质中通过与硫的替代重新编程mRNA递送热带
Xing Duan1, Hai Huang1, Shengbin Liu1
1Department of Critical Care Medicine, Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China.
Advanced materials (Deerfield Beach, Fla.)
|December 12, 2025
概括
一种新的-硫 (N-to-S) 脂质修饰策略将信使RNA (mRNA) 疗法从肝脏重定向到肺部和脏等其他器官. 这种方法增强了治疗应用和抗瘤效果,同时确保了安全性.
科学领域:
- 生物化学 生物化学
- 药物运输 药物运输 药物运输
- 纳米技术 纳米技术
背景情况:
- 电离性脂质对于mRNA疗法至关重要,目前的脂质如ALC-0315显示出强烈的肝脏向.
- 这种肝脏特异性热带性限制了肝外 (肝外) 输送的应用.
- 开发新的脂质配方面临着重大的安全验证障碍.
研究的目的:
- 在脂质头组中探索转硫 (N-to-S) 切换策略,以调节脂质纳米粒子 (LNP) -mRNA的组织分布.
- 评估这种修改对于肝外输送和治疗应用的潜力.
主要方法:
- 在市场上销售的ALC-0315脂质上进行了到硫 (N-to-S) 的原子级改性,从而产生S-ALC-0315.
- 配方优化涉及将S-ALC-0315与其原始脂质结合在1:2摩尔比上.
- 由此产生的LNP在临床前模型中评估了组织向,免疫反应诱导和抗瘤疗效.
主要成果:
- N-to-S修改成功地将LNP-mRNA输送热流从肝脏重定向到肺组织.
- 含有S-ALC-0315的优化配方证明了脏向.
- 这些脏向的LNP促进了抗原特异性细胞毒性T淋巴细胞 (CTL) 的产生,并在两个模型中显示出显著的抗瘤效应.
- N-to-S 修改策略保持了有利的安全概况.
结论:
- N-to-S脂质修饰是一种多功能平台,用于设计LNP-mRNA热带性,以实现有针对性的传递.
- 这一策略有效地实现了肝外输送,特别是在肺和脏.
- 这种方法有望通过克服输送限制和提高有效性来加速mRNA疗法的临床翻译,特别是在癌症治疗中.
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