Cholesterol reducing agents inhibit assembly of type I parainfluenza viruses.

Cholesterol reducing agents inhibit assembly of type I parainfluenza viruses.
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DOI:
10.1016/j.virol.2016.11.011
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发表时间:
2017-01-15
期刊:
影响因子:
3.7
通讯作者:
Takimoto, Toru
Takimoto, Toru
中科院分区:
医学3区
文献类型:
--
作者:
Bajimaya, Shringkhala;Hayashi, Tsuyoshi;Frankl, Tunde;Bryk, Peter;Ward, Brian;Takimoto, Toru

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许多包膜RNA病毒利用脂筏组装子代病毒体,但胆固醇,筏的主要成分,副粘病毒出芽和病毒体形成的作用是有争议的。在这项研究中,我们分析了FDA批准的降胆固醇药物吉非罗齐和洛伐他汀对人副流感病毒1型(hPIV1)和仙台病毒(SeV)筏形成和组装的影响。用试剂处理人气道上皮A549细胞,特别是当组合时,显著降低了感染性hPIV 1和SeV的产生。机制分析表明,细胞胆固醇的耗竭减少了包膜糖蛋白的细胞表面积累和病毒基质和核衣壳与筏膜的结合,从而导致病毒出芽和从细胞释放受损。这些结果表明,细胞胆固醇是组装和形成1型副流感病毒所必需的,并表明胆固醇可能是抗hPIV 1的抗病毒剂的有吸引力的靶点。
Many enveloped RNA viruses utilize lipid rafts for the assembly of progeny virions, but the role of cholesterol, a major component of rafts, on paramyxovirus budding and virion formation is controversial. In this study, we analyzed the effects of FDA-approved cholesterol-reducing agents, gemfibrozil and lovastatin, on raft formation and assembly of human parainfluenza virus type 1 (hPIV1) and Sendai virus (SeV). Treatment of the human airway epithelial A549 cells with the agents, especially when combined, significantly decreased production of infectious hPIV1 and SeV. Mechanistic analysis indicated that depletion of cellular cholesterol reduced cell surface accumulation of envelope glycoproteins and association of viral matrix and nucleocapsids with raft membrane, which resulted in impaired virus budding and release from the cells. These results indicate that cellular cholesterol is required for assembly and formation of type 1 parainfluenza viruses and suggest that cholesterol could be an attractive target for antiviral agents against hPIV1.
DOI: 10.1371/journal.pone.0010994
发表时间: 2010-06-07
期刊: PloS one
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