石墨烯/氧化石墨烯与细菌和哺乳动物细胞膜相互作用的差异
Victor Lanai1,2, Yanyan Chen1, Elena Naumovska3
1Division of Systems and Synthetic Biology, Department of Life Sciences, Chalmers University of Technology, SE-41296 Gothenburg, Sweden. shadir@chalmers.se.
Nanoscale
|December 21, 2023
概括
石墨烯与细菌和哺乳动物细胞的相互作用不同. 细菌细胞膜显示较弱的脂相互作用,允许更容易的石墨烯透,与哺乳动物细胞不同.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 细胞生物学 细胞生物学
背景情况:
- 石墨烯 (二维碳板) 在抗菌应用和药物输送方面表现有前途.
- 了解石墨烯与细胞膜的相互作用对于生物医学用途至关重要.
- 关于石墨烯细胞相互作用的知识存在差距.
研究的目的:
- 研究石墨烯和氧化石墨烯与细菌和哺乳动物细胞膜的相互作用.
- 比较石墨烯材料与关键脂的原子级相互作用.
- 分析这些相互作用对膜完整性和细胞吸收的影响.
主要方法:
- 密度函数理论 (DFT) 对原子级脂-石墨烯相互作用的计算.
- 使用细菌和哺乳动物脂的脂质组合.
- 差分扫描热量计 (DSC) 分析脂质体的热性质.
- 在细菌和哺乳动物脂质体/细胞中对石墨烯片透的观察.
主要成果:
- 哺乳动物脂体表现出比细菌脂体更强的自我结合.
- 细菌脂对表现出较少的排斥力,并与石墨烯/石墨烯氧化物形成更稳定的系统.
- 石墨烯片更容易穿透细菌脂质体和细胞.
- 细菌脂质体显示较低的热容量,支持较弱的脂相互作用.
- 石墨烯氧化物可以在没有破坏膜的情况下内化到哺乳动物脂质体中.
结论:
- 细菌脂之间的较弱的结合和减少的排斥力促进了石墨烯材料与细菌的相互作用.
- 石墨烯材料表现出与细菌细胞和哺乳动物细胞的明显相互作用机制.
- 这些发现有助于开发基于石墨烯的生物医学应用,考虑细胞特异性反应.
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