可点击可降解的阿里法性聚合物通过与基环氧合聚合:用有机染料进行合成和后功能化
Nele S Teske1, Julia Voigt, V Prasad Shastri
1Institute for Macromolecular Chemistry, Hermann Staudinger Haus, University of Freiburg , Stefan-Meier Str. 31, 79104 Freiburg, Germany.
Journal of the American Chemical Society
|June 28, 2014
概括
研究人员开发了用于纳米粒子治疗的新型可降解聚合物. 这些基因功能化聚合物能够有效地粘附着染料,用于增强成像和药物输送应用.
科学领域:
- 聚合物化学 聚合物化学
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
背景情况:
- 可降解的阿里法性聚合物对于基于纳米粒子 (NP) 的疗法至关重要.
- 用向图案和染料对NP进行共价修改对于指导交付和视觉确认至关重要.
- 引入易于修改的化学物质,如点击反应,对于NP功能化具有重要意义.
研究的目的:
- 开发一种简单而有效的方法,在高密度的情况下将基基组引入到亚利法性聚合物中,而不损害结晶性.
- 为了证明这些基因功能化聚合物的实用性,在创建染料修饰的纳米颗粒中用于成像和药物输送.
主要方法:
- 循环乳 (乳酸和e-caprolactone) 与propargyl 3-methylpentenoate氧化物 (PMPO) 的共聚合,以合成含有基的聚合物.
- 使用点击化学与常见的光染料 (Cy3,ATTO-740, 343) 证明了基基团的可访问性.
- 将共聚合物制成NP并评估细胞相容性,细胞吸收和在HeLa细胞中的可视化.
主要成果:
- 合成的共聚合物高达9%的基含量,保持聚结晶性.
- 通过多种光染料确认了成功的点击反应.
- 配制的染料修饰的NP没有火,在溶液中稳定超过10天,没有细胞毒性,并且由HeLa细胞有效地吸收细胞.
- 与物理捕获相比,共价染料修饰的证明优势,包括改善的信号噪声比和细胞内定位.
结论:
- 开发了一种简单的方法来合成高密度的基因功能化形聚合物.
- 这些新型聚合物适用于创建用于成像和药物输送的先进纳米粒子载体.
- 与常规装载的NP相比,共价染料修饰的NP在生物应用中提供了更高的性能.
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