Enhanced suppression of adenovirus replication by triple combination of anti-adenoviral siRNAs, soluble adenovirus receptor trap sCAR-Fc and cidofovir.

Enhanced suppression of adenovirus replication by triple combination of anti-adenoviral siRNAs, soluble adenovirus receptor trap sCAR-Fc and cidofovir.
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通过抗腺病毒 siRNA、可溶性腺病毒受体捕获 sCAR-Fc 和西多福韦的三重组合增强对腺病毒复制的抑制

DOI:
10.1016/j.antiviral.2015.05.010
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发表时间:
2015
期刊:
影响因子:
7.6
通讯作者:
Fechner H
Fechner H
中科院分区:
医学2区
文献类型:
--
作者:
Pozzuto T;Roger C;Kurreck J;Fechner H

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腺病毒(Ad)通常会引起轻微的自限性呼吸道或肠道感染,但也可能导致免疫抑制患者的严重疾病和致命结果。抗病毒药物治疗是腺病毒感染的重要治疗方法,但其疗效有限。最近,我们发现通过 RNA 干扰 (RNAi) 进行基因沉默是一种有前景的抑制腺病毒感染的新方法。在本体外研究中,我们检查了基于 RNAi 的抗腺病毒治疗的效率是否可以通过与病毒受体捕获 sCAR-Fc 和抗病毒药物西多福韦组合进一步提高。最初,分别针对腺病毒E1A、IVa2和DNA聚合酶mRNA的三种siRNA,siE1A_4、siIVa2_2和Pol-si2,被用于基因沉默。每种 siRNA 以剂量依赖性方式抑制 Ad 的复制,但抑制效率不同 (Pol-si2 > siIVa2_2 > siE1A_4)。与单一 siRNA 相比,双重或三重 siRNA 组合并未导致 Ad 复制明显更高的抑制。与不含sCAR-Fc的相同siRNA治疗相比,siRNA(单独或两种或三种siRNA的混合物)与sCAR-Fc的组合显着增加了对腺病毒复制的抑制。此外,所有三种siRNA、sCAR-Fc和西多福韦的混合物的三重组合比siRNA混合物/sCAR-Fc的组合效率高约23倍,比单独的siRNA混合物效率高约95倍。这些数据表明,用 sCAR-Fc 和西多福韦共同处理细胞适合提高抗腺病毒 siRNA 的效率。
Adenoviruses (Ad) generally induce mild self-limiting respiratory or intestinal infections but can also cause serious disease with fatal outcomes in immunosuppressed patients. Antiviral drug therapy is an important treatment for adenoviral infections but its efficiency is limited. Recently, we have shown that gene silencing by RNA interference (RNAi) is a promising new approach to inhibit adenoviral infection. In the presentin vitrostudy, we examined whether the efficiency of an RNAi-based anti-adenoviral therapy can be further increased by combination with a virus receptor trap sCAR-Fc and with the antiviral drug cidofovir. Initially, three siRNAs, siE1A_4, siIVa2_2 and Pol-si2, targeting the adenoviral E1A, IVa2 and DNA polymerase mRNAs, respectively, were used for gene silencing. Replication of the Ad was inhibited in a dose dependent manner by each siRNA, but the efficiency of inhibition differed (Pol-si2 > siIVa2_2 > siE1A_4). Double or triple combinations of the siRNAs compared with single siRNAs did not result in a measurably higher suppression of Ad replication. Combination of the siRNAs (alone or mixes of two or three siRNAs) with sCAR-Fc markedly increased the suppression of adenoviral replication compared to the same siRNA treatment without sCAR-Fc. Moreover, the triple combination of a mix of all three siRNAs, sCAR-Fc and cidofovir was about 23-fold more efficient than the combination of siRNAs mix/sCAR-Fc and about 95-fold more efficient than the siRNA mix alone. These data demonstrate that co-treatment of cells with sCAR-Fc and cidofovir is suitable to increase the efficiency of anti-adenoviral siRNAs.
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