通过微米大小的联合组装与设计者寡的mRNA的直接细胞质输送
Ruilu Feng1, Mehrnoosh Rafiei1, Kalindu S Fernando1
1Chemical and Biological Engineering Department, The Hong Kong University of Science and Technology, Hong Kong SAR, China. keychau@ust.hk.
Journal of materials chemistry. B
|January 13, 2025
概括
携带mRNA的微米尺寸载体绕过细胞内基因组直接进入细胞质中,性能优于纳米粒子和商业试剂. 这种新的方法通过避免 lysosomal 降解来提高核酸输送效率.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 药物输送系统 药物输送系统
背景情况:
- 无效的内体逃逸是细胞内核酸输送中的一个主要障碍.
- 目前的研究主要集中在纳米尺寸的载体上,忽视了替代策略.
研究的目的:
- 研究微米尺寸的载体对核酸直接进入细胞体的潜力.
- 开发一种新的方法,使用酸创建微米大小的mRNA联合组件.
- 为了比较微米尺寸载体的传染效率与纳米尺寸载体和商业试剂.
主要方法:
- 传递 RNA (mRNA) 与设计者寡 (pepMAX2) 的自发联合组合.
- 通过调整 NaCl 度和预化时间来优化联合组装尺寸.
- 与纳米尺寸组件和基于脂质的试剂相比,转化效率的评估.
- 使用计算模拟,抑制剂研究和活细胞共聚焦成像来阐明机制.
主要成果:
- 微米大小的mRNA-合组件已经成功生成了可调节的大小.
- 微米尺寸的载体的传输效率明显高于纳米尺寸的载体.
- 微米尺寸载体的效率超过了商用基于脂质的转染试剂的效率.
- 研究表明,细胞质中直接进入细胞质,绕过内体的通路和 lysosomal 降解.
结论:
- 微米大小的联合组件通过规避内体捕获提供了通过规避内体捕获来实现细胞内核酸输送的优越战略.
- 使用和盐的简单联合组装方法为传统纳米载体提供了有效的替代方案.
- 这种方法有望通过克服输送障碍来推进核酸疗法.
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