作为细胞内传递剂的DNA
Max E Distler1,2, Michelle H Teplensky1,2, Katherine E Bujold1,2
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Journal of the American Chemical Society
|August 19, 2021
概括
通过利用捕食受体-A进行快速内细胞分裂,DNA树枝显著增强了生物分子的传递. 这一突破为细胞输送和其他纳米级材料提供了一种新的方法.
科学领域:
- 生物技术
- 纳米技术
- 分子生物学
背景情况:
- 高密度的核酸纳米结构,就像球形核酸一样,激发了新的生物分子传递系统.
- 了解细胞吸收机制对于有效治疗至关重要.
研究的目的:
- 开发和评估DNA树突作为将生物分子送入活细胞的方法.
- 研究细胞吸收效率和DNA的机制.
主要方法:
- 合成DNA和结合到生物分子.
- 用DNA树突治疗树突细胞,并通过流细胞计量评估细胞吸收.
- 对DNA树突与食尸体受体-A的相互作用和随后的内细胞分裂的分析.
主要成果:
- 在1小时内,DNA树突在树突细胞中实现了90%的内化.
- 与线性DNA对应物相比,细胞DNA传递增加了20倍.
- 增强结合的细胞输送和活性 (卵泡蛋白1和硫蛋白α1).
结论:
- 高密度,多价值的DNA树枝显著增强生物分子的细胞吸收.
- 清理受体-A介导的内细胞分裂是DNA树突内部化的主要机制.
- 基因组构成一个有前途的平台,可以为细胞提供多种分子和纳米级材料.
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