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A fluorescent reporter system enables spatiotemporal analysis of host cell modification during herpes simplex virus-1 replication.

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Scherer, Katharina M 
Manton, James D 
Soh, Timothy K 
Mascheroni, Luca 
Connor, Vivienne 

Abstract

Herpesviruses are large and complex viruses that have a long history of coevolution with their host species. One important factor in the virus-host interaction is the alteration of intracellular morphology during viral replication with critical implications for viral assembly. However, the details of this remodeling event are not well understood, in part because insufficient tools are available to deconstruct this highly heterogeneous process. To provide an accurate and reliable method of investigating the spatiotemporal dynamics of virus-induced changes to cellular architecture, we constructed a dual-fluorescent reporter virus that enabled us to classify four distinct stages in the infection cycle of herpes simplex virus-1 at the single cell level. This timestamping method can accurately track the infection cycle across a wide range of multiplicities of infection. We used high-resolution fluorescence microscopy analysis of cellular structures in live and fixed cells in concert with our reporter virus to generate a detailed and chronological overview of the spatial and temporal reorganization during viral replication. The highly orchestrated and striking relocation of many organelles around the compartments of secondary envelopment during transition from early to late gene expression suggests that the reshaping of these compartments is essential for virus assembly. We furthermore find that accumulation of HSV-1 capsids in the cytoplasm is accompanied by fragmentation of the Golgi apparatus with potential impact on the late steps of viral assembly. We anticipate that in the future similar tools can be systematically applied for the systems-level analysis of intracellular morphology during replication of other viruses.

Description

Keywords

cytoskeleton, fluorescence, herpesvirus, host–pathogen interaction, microscopic imaging, microscopy, organelle, Animals, Capsid, Chlorocebus aethiops, Cytoplasm, Genes, Reporter, Golgi Apparatus, Herpesvirus 1, Human, Humans, Microscopy, Fluorescence, Single-Cell Analysis, Spatio-Temporal Analysis, Vero Cells, Virus Assembly, Virus Replication

Journal Title

J Biol Chem

Conference Name

Journal ISSN

0021-9258
1083-351X

Volume Title

296

Publisher

Elsevier BV

Rights

All rights reserved
Sponsorship
Engineering and Physical Sciences Research Council (EP/H018301/1)
Wellcome Trust (089703/Z/09/Z)
Medical Research Council (MR/K015850/1)
Medical Research Council (MR/K02292X/1)
Engineering and Physical Sciences Research Council (EP/L015889/1)
Biotechnology and Biological Sciences Research Council (BB/M021424/1)
Wellcome Trust (203249/Z/16/Z)