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Int J Nanomed：PEI-AgNCs可更有效的递送miRNA

2017-12-21 MedSci MedSci原创

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有效和安全的非病毒基因传递系统是治疗性基因临床应用的先决条件。在本文中，研究人员制备了聚乙烯亚胺封闭的银纳米簇（PEI-AgNCs）以递送microRNA（miRNA）。通过光致发光测定和透射电子显微镜表征所制备的PEI-AgNCs。细胞毒性测定显示PEI-AgNCs较低的细胞毒性。有趣的是，在HepG2和293A细胞中，PEI-AgNCs比PEI可更有效地转染miRNA模拟物。在这方面，通过使用

有效和安全的非病毒基因传递系统是治疗性基因临床应用的先决条件。在本文中，研究人员制备了聚乙烯亚胺封闭的银纳米簇（PEI-AgNCs）以递送microRNA（miRNA）。

通过光致发光测定和透射电子显微镜表征所制备的PEI-AgNCs。细胞毒性测定显示PEI-AgNCs较低的细胞毒性。有趣的是，在HepG2和293A细胞中，PEI-AgNCs比PEI可更有效地转染miRNA模拟物。在这方面，通过使用PEI-AgNCs将hsa-miR-21或hsa-miR-221模拟物（miR-21/221m）转运到HepG2细胞中。通过定量实时聚合酶链式反应确定转染后miR-21/221的表达。

结果显示，与阴性对照相比，PEI-AgNCs/miR-21/221m组表现出更高的miR-21/221水平。此外，AgNCs赋予PEI更强的抗菌活性，这一优势为PEI-AgNCs在转染过程中提供了防止细菌污染的潜力。此外，PEI-AgNCs是激活扫描共聚焦显微镜的细胞成像可行的纳米材料，显示出作为理想的荧光探针追踪转染行为的巨大潜力。

综上所述，该结果表明PEI-AgNCs是用于基因递送的有希望的新型非病毒载体。

原始出处：

Du C, Yan H, et al., Polyethyleneimine-capped silver nanoclusters for microRNA oligonucleotide delivery and bacterial inhibition.Int J Nanomedicine. 2017 Dec 1;12:8599-8613. doi: 10.2147/IJN.S146968. eCollection 2017.

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    2018-08-11 feather89

    #PE#

    0

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    2018-03-29 smallant2002

    #miR#

    0

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    2017-12-23 Homburg

    #miRNA#

    0

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    2017-12-23 ms3994565386320060

    #Med#

    0

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    2017-12-22 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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    2017-12-22 1dd8c52fm63(暂无匿称)

    学习学习.了解了解

    0

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    2017-12-22 忠诚向上

    好好学习.天天向上

    0

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    2017-12-22 清风拂面

    谢谢.学习了很好

    0