通过PEGylated固体脂质纳米颗粒进行增强的mRNA和pDNA传递,具有最佳平衡的可离子化/化脂质含量
Nipuni Maniyamgama1,2, Ki Hyun Bae1, Jialing Lee1
1Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, Centros #06-01, Singapore 138668, Republic of Singapore. yyyang@bti.a-star.edu.sg.
Journal of materials chemistry. B
|September 3, 2025
概括
研究人员开发了用于增强基因传递的化脂质纳米颗粒 (PEG-iSLNs). 这些PEG-iSLN显示出卓越的mRNA转染和稳定性,显示出对体内应用的希望.
科学领域:
- 纳米技术
- 生物技术
- 基因治疗
背景情况:
- 非病毒基因传递为各种疾病提供治疗潜力.
- 固体脂质纳米粒子 (SLN) 是稳定且易于制造的基因传递载体.
- 开发有效和安全的核酸输送SLN仍然是一个挑战.
研究的目的:
- 为有效的mRNA和等离子体DNA (pDNA) 输送开发可电离的脂质结合PEGylated SLNs (PEG-iSLNs).
- 通过改变可离子化脂质ALC-0315和离子性脂质DOTMA的比例来优化PEG-iSLN配方.
主要方法:
- 使用溶剂乳化/蒸发技术制备PEG-iSLN.
- 评估mRNA转染效能和膜融合活性.
- 使用生物发光成像的存储和体内传递研究中的SLN稳定性的评估.
主要成果:
- 与单脂配方相比,PEG- iSLN中的最佳ALC- 0315/ DOTMA比率产生了更好的mRNA转染和膜融合.
- 在4°C下,iSLN和PEG-iSLN的存储稳定性分别为18个月和12个月.
- 最好的候选药物PEG-iSLN-3成功地通过肌肉内和皮下途径促进了mRNA的输送.
结论:
- 可离子化脂质纳入的PEGylatedSLN是有效和稳定的非病毒基因传递载体.
- PEG-iSLN显示出在体内具有极小毒性的核酸输送的显著潜力.
- 这项研究强调了PEG-iSLN作为多种基因治疗应用的有希望的平台.
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