Principles for studying in vivo attenuation of virus mutants: defining the role of the cytomegalovirus gH/gL/gO complex as a paradigm

Principles for studying in vivo attenuation of virus mutants: defining the role of the cytomegalovirus gH/gL/gO complex as a paradigm
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研究病毒突变体体内减毒的原则:定义巨细胞病毒 gH/gL/gO 复合物作为范例的作用

DOI:
10.1007/s00430-015-0405-2
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发表时间:
2015
影响因子:
5.4
通讯作者:
Lemmermann
Lemmermann
中科院分区:
医学2区
文献类型:
--
作者:
Podlech;Reddehase;Lemmermann

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病毒最初进入宿主器官的细胞和随后的病毒后代在组织细胞之间的传播是病毒发病机制的基本事件。插入病毒体包膜的糖蛋白复合物在细胞进入过程中起关键作用。在这里,我们回顾和讨论最近的工作,揭示了小鼠巨细胞病毒(mCMV)的三聚体糖蛋白复合物gH/gL/gO的体内作用,提出相应的复合物的作用的模型,在体内的实验研究是不可行的,由于宿主种属特异性的CMV和明显的道德约束。一种新的方法相结合的gO反式互补的基因gO缺陷型病毒和数学对数线性回归分析的病毒增殖动力学在宿主组织中揭示了关键作用mCMV gH/gL/gO的病毒粒子到达的循环中的第一个靶细胞进入,而组织内传播进行不受影响的gH/gL/gO的情况下也。这些发现预测,靶向gO进行抗病毒干预可能在防止病毒接种到器官方面具有预防价值,但可能无法干扰已建立的原发性器官感染或组织细胞内潜伏期病毒再活化后的复发性感染。在鼠模型中证明的替代性gH/gL复合物gH/gL/gO和gH/gL/MCK-2以冗余方式彼此取代以确保病毒在组织中扩散,具有医学上有趣的意义,即直接靶向gH/gL核心复合物可能是预防原发性、确立性和复发性CMV感染的有希望的方法。
Initial virus entry into cells of host organs and subsequent spread of viral progeny between tissue cells are events fundamental to viral pathogenesis. Glycoprotein complexes inserted in the virion envelope are critically involved in the cell entry process. Here we review and discuss recent work that has shed light on the in vivo role of the trimeric glycoprotein complex gH/gL/gO of murine cytomegalovirus (mCMV) as a model to propose the role of the corresponding complex of human CMV, for which experimental studies in vivo are not feasible due to the host species specificity of CMVs and evident ethical constraints. A novel approach combining gO transcomplementation of a genetically gO-deficient virus and a mathematical log-linear regression analysis of the viral multiplication kinetics in host tissues revealed a critical role of mCMV gH/gL/gO only in first target cell entry of virions arriving with the circulation, whereas intra-tissue spread proceeded unaffected also in the absence of gH/gL/gO. These findings predict that targeting gO for an antiviral intervention may be of prophylactic value in preventing the seeding of virus to organs, but will likely fail to interfere with an established primary organ infection or with recurrent infection after virus reactivation from latency within tissue cells. The demonstration in the murine model of alternative gH/gL complexes gH/gL/gO and gH/gL/MCK-2, substituting one another in a redundant fashion for securing viral spread in tissues, has the medically interesting bearing that targeting the gH/gL core complex directly may be a promising approach to preventing primary, established, and recurrent CMV infections.
鼠巨细胞病毒的病毒趋化因子MCK-2作为GH/GL/MCK-2复合物的一部分促进感染。
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期刊: PLoS pathogens
影响因子: 6.7
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DOI: 10.1128/jvi.55.2.264-273.1985
发表时间: 1985-01-01
影响因子: 5.4
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DOI: --
发表时间: 2013
影响因子: 11.8
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巨细胞病毒 MCK-2 控制骨髓祖细胞的动员和募集以促进传播。
DOI: 10.1182/blood-2005-05-1833
发表时间: 2006
期刊: Blood
影响因子: 20.3
作者:
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通讯作者: Mocarski,EdwardS