Composite vector formulation for multiple siRNA delivery as a host targeting antiviral in a cell culture model of hepatitis C virus (HCV) infection.

Composite vector formulation for multiple siRNA delivery as a host targeting antiviral in a cell culture model of hepatitis C virus (HCV) infection.
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DOI:
10.1039/c6tb01718e
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发表时间:
2017-01-28
期刊:
Journal of materials chemistry. B
影响因子:
--
通讯作者:
Meyer F
Meyer F
中科院分区:
其他
文献类型:
--
作者:
Crouchet E ;Saad R ;Affolter-Zbaraszczuk C ;Ogier J ;Baumert TF ;Schuster C ;Meyer F

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丙型肝炎病毒(HCV)感染是世界范围内慢性肝病和癌症的主要原因。基于RNA干扰(RNAi)的基因疗法最近已经成为治疗慢性病毒感染的有希望的工具。事实上,小干扰RNA(siRNA)提供了靶向病毒生命周期所需的宿主因子的机会。在这项研究中,我们评估了一种新的基于纳米载体的方法,用于在慢性感染的肝细胞模型中递送siRNA。我们通过用靶向HCV宿主因子的siRNA和吡啶基硫脲接枝的聚乙烯亚胺(πPEI)涂覆磷酸钙核心来设计原始复合纳米颗粒。使用不同siRNA的组合,我们观察到HCV复制的有效和延长的减少。此外,我们表明,应用于我们的纳米颗粒的逐层涂层技术触发了作用于HCV生命周期不同步骤的siRNA的顺序释放。总之,我们的结果证明了这些纳米颗粒用于siRNA递送的功效,并为抗病毒治疗开辟了新的前景。
Hepatitis C virus (HCV) infection is a major cause of chronic liver disease and cancer worldwide. RNA interference (RNAi)-based gene therapies have emerged recently as a promising tool to treat chronic viral infections. Indeed, small interfering RNAs (siRNAs) provide an opportunity to target host factors required for the viral life cycle. In this study, we evaluated a novel nanovector-based approach for siRNA delivery in a model of chronically infected hepatic cells. We designed original composite nanoparticles by coating the calcium phosphate core with siRNAs targeting HCV host-factors and pyridylthiourea-grafted polyethyleneimine (πPEI). Using combinations of different siRNAs, we observed an efficient and prolonged decrease of HCV replication. Moreover, we showed that the layer-by-layer technique of coating applied to our nanoparticles triggers a sequential release of siRNAs acting on different steps of the HCV life cycle. Together, our results demonstrate the efficacy of these nanoparticles for siRNA delivery and open new perspectives for antiviral therapies.
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