Identification of Magnetic Nanoparticles for Combined Positioning and Lentiviral Transduction of Endothelial Cells

Identification of Magnetic Nanoparticles for Combined Positioning and Lentiviral Transduction of Endothelial Cells
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用于内皮细胞组合定位和慢病毒转导的磁性纳米颗粒的鉴定

DOI:
10.1007/s11095-011-0657-5
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发表时间:
2012
影响因子:
3.7
通讯作者:
Fleischmann BK
Fleischmann BK
中科院分区:
医学3区
文献类型:
--
作者:
Wenzel D;Rieck S;Vosen S;Mykhaylyk O;Trueck C;Eberbeck D;Trahms L;Zimmermann K;Pfeifer A;Fleischmann BK

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目的磁性纳米粒子(MNP)与磁场的结合是一种强有力的方法,使细胞定位和/或局部基因治疗。由于这两个应用程序之间的MNP的物理要求不同,我们已经探讨了是否使用不同的MNP可以提供位点特异性定位结合有效的病毒转导的内皮细胞(ECs)。MethodsA各种MNP进行了筛选磁细胞标记和慢病毒结合。然后选择两种不同的MNP和他们的联合应用进行评估EC磁化和transduction efficiency.ResultsThe PEI-Mag 2和NDT-Mag 1粒子的联合使用提供了两个有效的慢病毒转导和高磁响应的EC,甚至可以保留在血管壁内流动条件下。这些MNP的使用不影响EC的生物学特性,如表面标记物表达和血管网络形成。重要的是,用这种方法,我们可以实现一个有效的功能过度表达内皮细胞中的内皮型一氧化氮合酶在ECs.ConclusionsThe应用程序的两个不同的MNP提供了最佳的结果磁标记的内皮细胞结合病毒转导。这种新的方法对于体内靶向基因治疗和血管系统中的位点特异性细胞替代非常有用。
PurposeThe combination of magnetic nanoparticles (MNPs) with a magnetic field is a powerful approach to enable cell positioning and/or local gene therapy. Because physical requirements for MNPs differ between these two applications we have explored whether the use of different MNPs can provide site-specific positioning combined with efficient viral transduction of endothelial cells (ECs).MethodsA variety of MNPs was screened for magnetic cell labeling and lentivirus binding. Then two different MNPs were chosen and their combined application was evaluated regarding EC magnetization and transduction efficiency.ResultsThe combined use of PEI-Mag2 and NDT-Mag1 particles provided both efficient lentiviral transduction and high magnetic responsiveness of ECs that could be even retained within the vascular wall under flow conditions. The use of these MNPs did not affect biological characteristics of ECs like surface marker expression and vascular network formation. Importantly, with this method we could achieve an efficient functional overexpression of endothelial nitric oxide synthase in ECs.ConclusionsThe application of two different MNPs provides optimal results for magnetic labeling of ECs in combination with viral transduction. This novel approach could be very useful for targeted gene therapyex vivoand site-specific cell replacement in the vascular system.
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发表时间: 2004-05-01
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