确定表面活性剂对DNA交叉链接菌根细胞质递送中的作用
Ina F de la Fuente1, Shraddha S Sawant1, Kiang W Kho2
1Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States.
ACS applied materials & interfaces
|August 12, 2024
概括
核酸纳米囊 (NANs) 促进了DNA表面活性合物向细胞的输送. 表面活性剂的特性影响NAN降解和细胞分布,影响基因沉默效率和内体逃生.
科学领域:
- 纳米技术 纳米技术
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 核酸纳米囊 (NAN) 是用于刺激响应DNA传递的纳米结构.
- 以前的研究表明,NANs具有基因调节能力,但分子传递机制尚不清楚.
研究的目的:
- 研究NANs的酶降解,并确定由此产生的DNA-表面活性剂结合物.
- 阐明DNA - 表面活性剂结合体转移和细胞递送的机制.
- 为了比较不同表面活性剂尾巴长度对NAN特性和细胞递送的影响.
主要方法:
- 质谱测量 (MS) 来确认DNA-表面活性剂结合体的同一性.
- 表面增强 (共振) 拉曼光谱法 (SE(R) RS) 来研究转位.
- 使用具有不同表面活性剂尾巴长度 (C12和C10) 的NAN进行比较分析.
主要成果:
- NANs的酶降解产生DNA表面活性剂结合物.
- 结合物的转移是能源独立的,需要从NAN结构中释放.
- 与C12 NAN相比,C10 NAN显示出更有效的内体逃脱和基因沉默,尽管吸收率相似.
- 表面活性剂特性 (CMC,聚合) 的差异影响了细胞分布和贩运.
结论:
- 表面活性剂的特性极大地影响NAN降解和DNA-表面活性剂合物释放.
- 表面活性剂选择所决定的NANs的物理特性会影响细胞传递效率.
- 优化表面活性剂的组装和拆卸是提高NAN介导基因传递和治疗结果的关键.
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