Recognition-mediated activation of therapeutic gold nanoparticles inside living cells.
Recognition-mediated activation of therapeutic gold nanoparticles inside living cells.
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DOI:
10.1038/nchem.858
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发表时间:
2010-11
期刊:
影响因子:
21.8
通讯作者:
Rotello, Vincent M.
中科院分区:
文献类型:
--
作者:
Kim, Chaekyu;Agasti, Sarit S.;Zhu, Zhengjiang;Isaacs, Lyle;Rotello, Vincent M.
Supramolecular chemistry provides a versatile tool for the organization of molecular systems into functional structures and the actuation of these assemblies for applications through the reversible association between complementary components. Application of this methodology in living systems represents a significant challenge due to the chemical complexity of cellular environments and lack of selectivity of conventional supramolecular interactions. Herein, we present a host-guest system featuring diaminohexane-terminated gold nanoparticles (AuNP-NH2) and complementary cucurbit[7]uril (CB[7]). In this system, threading of CB[7] on the particle surface reduces the cytotoxicity of AuNP-NH2 through sequestration of the particle in endosomes. Intracellular triggering of the therapeutic effect of AuNP-NH2 was then achieved via the administration of 1-adamantylamine (ADA), removing CB[7] from the nanoparticle surface and triggering the endosomal release and concomitant in situ cytotoxicity of AuNP-NH2. This supramolecular strategy for intracellular activation provides a new tool for potential therapeutic applications.
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