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首页> 外文期刊>Nucleic Acid Therapeutics >Modulating Polymer-siRNA Binding Does Not Promote Polyplex-Mediated Silencing
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Modulating Polymer-siRNA Binding Does Not Promote Polyplex-Mediated Silencing

机译:调节聚合物 - siRNA结合不会促进多分布介导的沉默

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摘要

The development of delivery vehicles for small interfering RNAs (siRNAs) remains a bottleneck to widespread clinical use. Cationic polymers represent an important class of potential delivery vehicles. In this study, we used alkyne-azide click chemistry to synthesize a variety of cationic poly(propargyl glycolide) backbone polymers to bind and deliver siRNAs. We demonstrated control over the binding interactions of these polymers and siRNAs by varying binding strength by more than three orders of magnitude. Binding strength was found to meet or exceed that of commercially available transfection agents. Our polymers effectively delivered siRNAs with no detectable cytotoxicity. Despite accumulation of siRNAs at levels comparable with commercial reagents, we did not observe silencing of the targeted protein. The implications of our results for future siRNA delivery vehicle design are discussed.
机译:小干扰RNA(siRNA)载体的开发仍然是临床广泛应用的瓶颈。阳离子聚合物是一类重要的潜在运载工具。在这项研究中,我们使用叠氮炔点击化学合成了多种阳离子聚(炔丙基乙交酯)主链聚合物,以结合和传递siRNA。我们证明了通过改变结合强度超过三个数量级来控制这些聚合物和siRNA的结合相互作用。发现结合强度达到或超过商用转染剂的结合强度。我们的聚合物有效地传递siRNA,没有可检测的细胞毒性。尽管siRNA的积累水平与商业试剂相当,但我们没有观察到靶蛋白的沉默。讨论了我们的研究结果对未来siRNA载体设计的影响。

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