脂质纳米颗粒用于通过系统注射向大脑输送mRNA
Dinglingge Cao1, Xucheng Hou1, Chang Wang1
1Icahn Genomics Institute, Precision Immunology Institute, Department of Immunology and Immunotherapy, Department of Oncological Sciences, Tisch Cancer Institute, Friedman Brain Institute, Biomedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Science advances
|August 13, 2025
概括
研究人员开发了OS4T脂质纳米粒子 (LNP) 用于大脑mRNA输送. 这些LNP显著增强大脑中的mRNA翻译,显示出治疗质母细胞瘤和其他中枢神经系统疾病的前景.
科学领域:
- 神经科学是一个神经科学.
- 生物技术是生物技术.
- 药物运输 药物运输 药物运输
背景情况:
- 系统性信使RNA (mRNA) 向大脑的传递受到血脑屏障的阻碍.
- 针对中枢神经系统 (CNS) 需要创新的交付平台.
研究的目的:
- 开发新的脂质纳米颗粒 (LNP) 以有效地向大脑传递系统性mRNA.
- 在脑疾病的临床前模型中评估这些LNP的疗效.
主要方法:
- 将SR-57227,一种血清素5-HT3受体连接体,纳入用于LNP配方的电离性脂质.
- 优化LNP配方,确定OS4T LNP作为主要候选人.
- 评估大脑mRNA转化和治疗疗效在一个正位体质母细胞瘤 (GBM) 鼠标模型.
主要成果:
- 在系统性给药后,OS4T LNPs与Onpattro (DLin-MC3-DMA) 相比,大脑mRNA翻译增加了50倍以上.
- 工程化介质素-12 mRNA载荷的OS4T LNPs显著抑制了质母细胞瘤瘤的生长.
- 在GBM小鼠模型中,用OS4T LNPs治疗导致整体存活率提高.
结论:
- OS4T LNP是一种高效的平台,可通过全身注射输送脑mRNA.
- 这种LNP技术具有治疗质母细胞瘤和其他中枢神经系统疾病的巨大潜力.
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