C2AB: a molecular glue for lipid vesicles with a negatively charged surface.

C2AB: a molecular glue for lipid vesicles with a negatively charged surface.
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DOI:
10.1021/la901676e
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发表时间:
2009-07-07
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
通讯作者:
Ha T
Ha T
中科院分区:
其他
文献类型:
--
作者:
Diao J;Yoon TY;Su Z;Shin YK;Ha T

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人工微粒系统如脂质囊泡在多种生物医学应用如药物递送和靶向中被发现。如果脂质体可以根据需要粘合在一起,同时稳定防止融合,则可以添加更多通用的控制层。在这里,我们提出了一种由蛋白质和钙离子组成的双组分分子胶,每种组分都专门用于快速和特异性结合带负电荷的脂质膜。在混合两种成分时,这种胶的高亲和力结合开始以亚秒级紧密地桥接两个脂质囊泡。此外,高度带电的脂质体有益于在施加分子胶之前防止自发融合。
Artificial particulate systems such as lipid vesicles are found in a variety of biomedical applications such as drug delivery and targeting. More versatile layers of control would be added if liposomes could be glued together on demand while stabilized against fusion. Here, we present a two-component molecular glue composed of a protein and calcium ions, with each component specialized for fast and specific binding to negatively charged lipid membranes. Upon mixing the two components, the high affinity binding of this glue starts to tightly bridge two lipid vesicles on a subsecond scale. Furthermore, highly charged liposomes are beneficial in preventing spontaneous fusion before applying the molecular glue.
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