DNA-Mediated Cellular Delivery of Functional Enzymes.

DNA-Mediated Cellular Delivery of Functional Enzymes.
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DOI:
10.1021/jacs.5b09711
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发表时间:
2015-12-02
影响因子:
15
通讯作者:
Mirkin CA
Mirkin CA
中科院分区:
化学1区
文献类型:
--
作者:
Brodin JD;Sprangers AJ;McMillan JR;Mirkin CA

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我们报告了一种策略,用于创建一类新的蛋白质转染材料组成的功能性蛋白质核心化学修饰的致密壳的寡核苷酸。这些材料保留了水解酶β-半乳糖苷酶的天然结构和催化能力,该酶作为蛋白质核心,尽管其表面用β 25 DNA链官能化。寡核苷酸壳与β-半乳糖苷酶表面的共价连接使其细胞摄取增强高达280倍,并允许使用低至100 pM酶的工作浓度。DNA-功能化的β-半乳糖苷酶保留其一旦被内吞就催化β-糖苷键水解的能力,而相同浓度的蛋白质显示出很少或没有细胞内催化活性。
We report a strategy for creating a new class of protein transfection materials composed of a functional protein core chemically modified with a dense shell of oligonucleotides. These materials retain the native structure and catalytic ability of the hydrolytic enzyme β-galactosidase, which serves as the protein core, despite the functionalization of its surface with ∼25 DNA strands. The covalent attachment of a shell of oligonucleotides to the surface of β-galactosidase enhances its cellular uptake of by up to ∼280-fold and allows for the use of working concentrations as low as 100 pM enzyme. DNA-functionalized β-galactosidase retains its ability to catalyze the hydrolysis of β-glycosidic linkages once endocytosed, whereas equal concentrations of protein show little to no intracellular catalytic activity.
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影响因子: 11.1
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