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Specificity and Mobility of Biomacromolecular Multivalent Constructs for Cellular Targeting

机译:用于细胞靶向的生物大分子多价构建体的特异性和移动性

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摘要

Effective targeting of drugs to cells requires that the drug reach the target cell and interact specifically with it. In this study we synthesized a biomacromolecular, multivalent construct intended to target glioblastoma tumors. The construct was created by linking three dodecapeptides, reported to bind the α6β1 integrin, with poly(ethylene glycol) linkers. The construct is intended to be delivered locally, and it demonstrates a more homogenous and more rapid perfusion profile in comparison with quantum dots. The binding specificity of the construct was investigated using glioblastoma cells and normal human astrocyte cells. The results reveal qualitative differences in binding between glioma and normal human astrocyte cells, with a moderate increase in binding avidity due to multivalency (0.79 μM for the trivalent construct versus 4.28 μM for the dodecapeptide). Overall, biomacromolecular constructs appear to be a promising approach for targeting with high biocompatibility, good perfusion abilities, and specificity.
机译:有效地将药物靶向细胞需要药物到达靶细胞并与其特异性相互作用。在这项研究中,我们合成了旨在靶向胶质母细胞瘤肿瘤的生物大分子多价构建体。该构建体是通过将三个据报道可与α6β1整联蛋白结合的十二肽与聚乙二醇连接体连接而成的。该构建体旨在局部递送,并且与量子点相比,其显示出更均一,更快速的灌注曲线。使用胶质母细胞瘤细胞和正常人星形胶质细胞研究了构建体的结合特异性。结果揭示了神经胶质瘤与正常人星形胶质细胞之间结合的质量差异,由于多价(三价构建体为0.79μM,十二肽为4.28μM),结合亲和力有所增加。总体而言,生物大分子构建体似乎是具有高生物相容性,良好的灌注能力和特异性的靶向方法。

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