Hyaluronic Acid/Poly-l-Lysine Multilayers as Reservoirs for Storage and Release of Small Charged Molecules.

Hyaluronic Acid/Poly-l-Lysine Multilayers as Reservoirs for Storage and Release of Small Charged Molecules.
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透明质酸/聚-L-赖氨酸多层作为储存和释放小带电分子的储层。

DOI:
10.1002/mabi.201500093
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发表时间:
2015
影响因子:
4.6
通讯作者:
D. Volodkin
D. Volodkin
中科院分区:
工程技术3区
文献类型:
--
作者:
Vladimir Z. Prokopović;C. Duschl;D. Volodkin

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聚电解质多层膜由于其可调节的特性和控制细胞反应的能力,目前在生物应用方面非常有吸引力。在这里,我们证明了由透明质酸和聚赖氨酸制成的多层膜作为小带电分子的高容量储层。薄膜内的强积累是由静电驱动的聚电解质自由电荷结合来解释的。基于电荷平衡和聚合物动力学,讨论了膜中的结合和释放机制。我们的研究结果表明,分子通过膜-液界面的传输限制了释放速度。多层膜具有较高的载药和控释潜力,可作为药物传递和组织工程的有效平台。
Polyelectrolyte multilayer films are nowadays very attractive for bioapplications due to their tunable properties and ability to control cellular response. Here we demonstrate that multilayers made of hyaluronic acid and poly-l-lysine act as high-capacity reservoirs for small charged molecules. Strong accumulation within the film is explained by electrostatically driven binding to free charges of polyelectrolytes. Binding and release mechanisms are discussed based on charge balance and polymer dynamics in the film. Our results show that transport of molecules through the film-solution interface limits the release rate. The multilayers might serve as an effective platform for drug delivery and tissue engineering due to high potential for drug loading and controlled release.
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