Multifunctional trackable dendritic scaffolds and delivery agents.

Multifunctional trackable dendritic scaffolds and delivery agents.
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DOI:
10.1002/anie.201007427
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发表时间:
2011-04-04
影响因子:
16.6
通讯作者:
Hawker, Craig J.
Hawker, Craig J.
中科院分区:
化学1区
文献类型:
--
作者:
Amir, Roey J.;Albertazzi, Lorenzo;Willis, Jenny;Khan, Anzar;Kang, Taegon;Hawker, Craig J.

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树枝状聚合物和其他3-D分子组装体由于其球形形状、模块化结构、单分散性和多个官能端基而成为生物递送剂和诊断探针的有吸引力的支架[1,2]。[3]为了解决这一潜力,已经开发了许多策略和相关的树突状结构,用于将生物活性分子递送到所需的细胞或组织[4],其中包封[5]和共价连接到树突状链末端是两种主要方法。[6]虽然药物或染料在树枝状聚合物的内腔中的包封是有希望的,[5]在大多数情况下,即使使用高世代的树枝状聚合物,也只有有限数量的客体分子可以被包封。[4d]此外,包封的非共价性质使得控制负载载体的稳定性和有效载荷的后续释放成为挑战。[4e]另一种策略是利用大量的树枝状链末端,
Dendrimers and other 3-D molecular assemblies are attractive scaffolds for biological delivery agents and diagnostic probes [1, 2] due to their globular shape, modular structure, monodispersity and plurality of functional end groups.[3] To address this potential, a number of strategies and related dendritic architectures have been developed for delivery of bioactive molecules to desired cells or tissue,[4] with encapsulation [5] and covalent attachment to the dendritic chain ends being two major approaches.[6] While the encapsulation of drugs or dyes within the inner cavities of the dendrimer is promising,[5] in most cases only a limited number of guest molecules can be encapsulated even with dendrimers of high generations.[4d] Moreover, the non-covalent nature of the encapsulation makes it a challenge to control the stability of the loaded carrier and subsequent release of the payload.[4e] An alternative strategy exploits the large number of dendritic chain ends to
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