脂质纳米粒子介导的信使RNA传递用于自然杀手细胞的ex vivo工程
Stefania Douka1, Lisa E Brandenburg1, Cristina Casadidio2
1Pharmaceutics division, Utrecht Institute for Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, the Netherlands.
概括
脂质纳米颗粒 (LNP) 提供了一种有希望的非病毒方法,用于将mRNA传递给自然杀手 (NK) 细胞,克服了用于增强细胞疗法的当前转染技术的挑战.
科学领域:
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
- 细胞疗法细胞疗法
背景情况:
- 自然杀手 (NK) 细胞对于天生的免疫力至关重要,可以消除癌症和病毒感染的细胞.
- 鉴于NK细胞的低毒性和独立于先前激活,NK细胞正在被用于采用细胞疗法 (ACT).
- 用mRNA对NK细胞进行工程可以改善瘤向和细胞毒性,但目前的传染方法如电穿孔有局限性.
研究的目的:
- 研究聚合物和脂质纳米粒子 (LNP) 配方,以有效地将mRNA传递给NK细胞.
- 为了比较基于LNP的交付与传统的方法,如电穿孔和多重复合.
- 在ACT中确定NK细胞工程的最佳非病毒传递系统.
主要方法:
- 使用聚合纳米粒子 (基于二甲基乙胺和二甲基乙胺库) 和含有各种可电离性脂质的脂质纳米粒子 (LNP) 评估mRNA输送.
- 通过调整脂质组成和微流体参数来为eGFP-mRNA输送,优化了LNP配方.
- 评估NK (KHYG-1) 和T (Jurkat) 细胞系中的转染效率和蛋白质表达,以及带血衍生的NK细胞.
主要成果:
- 聚合物纳米颗粒显示了有限的NK细胞内化和低的转染效率.
- 优化的mRNA-LNP在NK细胞中实现了大约100%的转染效率和高蛋白表达.
- 与多重复和电穿孔相比,LNP表现出更高的传染效率和eGFP表达.
结论:
- 脂质纳米颗粒 (LNP) 是NK细胞中mRNA的高效非病毒传递系统.
- 优化的LNP克服了现有的转染方法的局限性,从而实现了增强的NK细胞工程.
- 基于LNP的mRNA输送是推进基于NK细胞的新型免疫疗法的有希望的策略.
相关概念视频
RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
Experimental RNAi
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...


