外部触发的纳米结构掩盖细胞透的激活
Gayong Shim1,2
1School of Systems Biomedical Science, Soongsil University, Seoul 06978, Republic of Korea.
Molecules (Basel, Switzerland)
|August 14, 2025
概括
研究人员开发了一种新的DNA纳米结构来控制细胞透. 该平台使用冷大气等离子体精确激活递送,克服当前疗法的局限性.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 药物输送系统 药物输送系统
背景情况:
- 细胞透 (CPP) 对于细胞内传递有价值,但遭受非特异性吸收和细胞毒性.
- 目前的输送方法缺乏精确的空间和时间控制,这阻碍了CPP的临床应用.
研究的目的:
- 开发一个冷大气等离子体响应的输送平台,暂时抑制和外部激活膜活性.
- 设计一种基于DNA的纳米结构,用于控制治疗性的细胞内输送.
主要方法:
- 制造DNA纳米花纳米结构 (150-250nm) 用于复杂化.
- 使用冷大气等离子体来触发DNA掩盖的破坏并恢复的功能.
- 通过等离子体治疗评估生理条件下的系统惰性和激活动力学.
- 在2D和3D模型中使用光恢复,细胞吸收试验和细胞毒性测量评估受控活性.
主要成果:
- 在生理条件下,DNA纳米花系统表现为惰性,在暴露于等离子体时迅速激活.
- 在单层和3D球形模型中实现了对活性的精确空间和时间控制.
- 该平台成功调节了功能,没有生物化学触发或永久修改.
结论:
- 开发的可外部激活的纳米材料平台可以精确控制用于治疗应用的功能.
- 这种模块化策略为开发需要在复杂的生物环境中控制激活的疗法提供了有希望的方法.
- 该系统克服了与传统的细胞透相关的非特异性吸收和非向性细胞毒性限制.
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