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Effects of polyrotaxane structure on polyion complexation with DNA

机译:聚轮烷结构对聚离子与DNA络合的影响

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Aminoethylcarbamoyl-polyrotaxanes (AEC-α/E35-TYR-Zs) were synthesized as a novel cationic polymer for DNA complexation and characterized in terms of physicochemical properties of polyion complex. Here, AEC groups were introduced to hydroxyl groups of α-cyclodextrins (α-CDs) that are threaded onto a poly(ethylene glycol) (PEG) chain capped with bulky end-groups (polyrotaxane). We examined the ability of DNA complexation of the AEC-α/E35-TYR-Zs compared with polyethylenimine (PEI). Agarose gel shift assay and ethydium bromide (EB) displacement analysis showed that the number of threading α-CDs was one of the dominant factors to enhance the ability of DNA complexation. In addition, increasing the number of AEC groups in the AEC-α/E35-TYR-Zs led to tighter complexation.
机译:合成了氨基乙基氨基甲酰基聚轮烷(AEC-α/ E35-TYR-Zs),作为一种新型的阳离子聚合物,用于DNA络合,并根据聚离子复合物的理化性质对其进行了表征。在这里,将AEC基团引入到α-环糊精(α-CDs)的羟基上,该羟基拧在以大端基(聚轮烷)封端的聚乙二醇(PEG)链上。我们检查了与聚乙烯亚胺(PEI)相比,AEC-α/ E35-TYR-Zs的DNA络合能力。琼脂糖凝胶位移试验和溴化乙锭(EB)位移分析表明,穿线α-CD的数量是增强DNA络合能力的主要因素之一。另外,增加AEC-α/ E35-TYR-Z中AEC基团的数量会导致更紧密的络合。

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