Engineered Metal-Phenolic Capsules Show Tunable Targeted Delivery to Cancer Cells

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• 作者：Yi Ju ; Jiwei Cui ; Huanli Sun ; Markus Müllner ; Yunlu Dai ; Junling Guo ; Nadja Bertleff-Zieschang ; Tomoya Suma ; Joseph J. Richardson ; Frank Caruso
• 刊名：Biomacromolecules
• 出版年：2016
• 出版时间：June 13, 2016
• 年：2016
• 卷：17
• 期：6
• 页码：2268-2276
• 全文大小：519K
• 年卷期：0
• ISSN：1526-4602

文摘

We engineered metal-phenolic capsules with both high targeting and low nonspecific cell binding properties. The capsules were prepared by coating phenolic-functionalized hyaluronic acid (HA) and poly(ethylene glycol) (PEG) on calcium carbonate templates, followed by cross-linking the phenolic groups with metal ions and removing the templates. The incorporation of HA significantly enhanced binding and association with a CD44 overexpressing (CD44+) cancer cell line, while the incorporation of PEG reduced nonspecific interactions with a CD44 minimal-expressing (CD44−) cell line. Moreover, high specific targeting to CD44+ cells can be balanced with low nonspecific binding to CD44– cells simply by using an optimized feed-ratio of HA and PEG to vary the content of HA and PEG incorporated into the capsules. Loading an anticancer drug (i.e., doxorubicin) into the obtained capsules resulted in significantly higher cytotoxicity to CD44+ cells but lower cytotoxicity to CD44– cells.