Cholesterol dependence of pseudorabies herpesvirus entry.

Cholesterol dependence of pseudorabies herpesvirus entry.
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伪狂犬病疱疹病毒进入的胆固醇依赖性

DOI:
10.1007/s00284-010-9700-8
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发表时间:
2011-01
影响因子:
2.6
通讯作者:
Herrler G
Herrler G
中科院分区:
生物学4区
文献类型:
--
作者:
Ren X;Yin J;Li G;Herrler G

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脂筏是细胞膜上的特殊微区。它们富含鞘脂和胆固醇,在许多生物过程中起着关键作用。本研究的目的是分析伪狂犬病病毒(PrV)感染细胞对脂筏的关键成分胆固醇的需求。用甲基-β-环糊精(MβCD)去除病毒膜或包膜的胆固醇,用空斑法测定三株PrV的感染性。分析了在Mβ CD处理的细胞和病毒中加入胆固醇对细胞感染的影响。此外,吸附后胆固醇耗竭对PrV感染的影响进行了研究。我们发现,MβCD对质膜或病毒膜的胆固醇消耗显著损害了PrV毒株Kaplan、Becker和Bartha K-61的感染性。该病毒的胆固醇含量较低,对较低的MβCD浓度有反应。将外源性胆固醇加入到Mβ CD处理的细胞或病毒粒子中,部分恢复了病毒的感染性。最佳的PrV感染需要病毒和质膜中的胆固醇。
Lipid rafts are special microdomains in the plasma membrane. They are enriched in sphingolipids and cholesterol, playing critical roles in many biological processes. The purpose of this study is to analyze the requirement of cholesterol, a crucial component of lipid rafts for cell infection by pseudorabies virus (PrV). Cholesterol of plasma membrane or viral envelope was depleted with methyl-beta-cyclodextrin (MβCD), and the infectivity of three strains of PrV was determined with plaque assays. The effect of adding cholesterol to MβCD-treated cells and viruses on cell infection was analyzed. Furthermore, effect of post-adsorption cholesterol depletion on PrV infection was investigated. We show that cholesterol depletion of either the plasma membrane or the viral membrane by MβCD significantly impaired the infectivity of PrV strains Kaplan, Becker, and Bartha K-61. The virus was shown to have lower cholesterol content and to respond to lower MβCD concentrations. Exogenous cholesterol added to either MβCD-treated cells or virions partially restored the virus infectivity. Optimal PrV infection requires cholesterol in viral and plasma membranes.
DOI: 10.1099/vir.0.19252-0
发表时间: 2003-11-01
影响因子: 3.8
作者:
Katzman, RB;Longnecker, R
通讯作者: Longnecker, R
DOI: 10.1128/jvi.76.13.6701-6709.2002
发表时间: 2002-07-01
影响因子: 5.4
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发表时间: 2007-07-01
影响因子: 5.4
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DOI: 10.1128/jvi.77.17.9542-9552.2003
发表时间: 2003-09-01
影响因子: 5.4
作者:
Bender, FC;Whitbeck, JC;Cohen, GH
通讯作者: Cohen, GH