Spatial and temporal resolution of global protein synthesis during HSV infection using bioorthogonal precursors and click chemistry
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Author(s)
Su Hui Teo, C
Serwa, RA
O'Hare, P
Type
Journal Article
Abstract
We used pulse-labeling with the methionine analogue homopropargylglycine (HPG) to investigate spatiotemporal aspects of protein synthesis during herpes simplex virus (HSV) infection. In vivo incorporation of HPG enables subsequent selective coupling of fluorochrome-capture reagents to newly synthesised proteins. We demonstrate that HPG labeling had no effect on cell viability, on accumulation of test early or late viral proteins, or on overall virus yields. HPG pulse-labeling followed by SDS-PAGE analysis confirmed incorporation into newly synthesised proteins, while parallel processing by in situ cycloaddition revealed new insight into spatiotemporal aspects of protein localisation during infection. A striking feature was the rapid accumulation of newly synthesised proteins not only in a general nuclear pattern but additionally in newly forming sub-compartments represented by small discrete foci. These newly synthesised protein domains (NPDs) were similar in size and morphology to PML domains but were more numerous, and whereas PML domains were progressively disrupted, NPDs were progressively induced and persisted. Immediate-early proteins ICP4 and ICP0 were excluded from NPDs, but using an ICP0 mutant defective in PML disruption, we show a clear spatial relationship between NPDs and PML domains with NPDs frequently forming immediately adjacent and co-joining persisting PML domains. Further analysis of location of the chaperone Hsc70 demonstrated that while NPDs formed early in infection without overt Hsc70 recruitment, later in infection Hsc70 showed pronounced recruitment frequently in a coat-like fashion around NPDs. Moreover, while ICP4 and ICP0 were excluded from NPDs, ICP22 showed selective recruitment. Our data indicate that NPDs represent early recruitment of host and viral de novo translated protein to distinct structural entities which are precursors to the previously described VICE domains involved in protein quality control in the nucleus, and reveal new features from which we propose spatially linked platforms of newly synthesised protein processing after nuclear import.
Date Issued
2016-10-05
Date Acceptance
2016-09-12
Citation
PLOS Pathogens, 2016, 12 (10), pp.1-37
ISSN
1553-7366
Publisher
Public Library of Science
Start Page
1
End Page
37
Journal / Book Title
PLOS Pathogens
Volume
12
Issue
10
Copyright Statement
© 2016 Su Hui Teo et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
License URL
Sponsor
Medical Research Council (MRC)
Marie Curie Cancer Care
Identifier
https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1005927
Grant Number
MR/L000148/1
PU/T/WL/09/75
Subjects
Science & Technology
Life Sciences & Biomedicine
Microbiology
Parasitology
Virology
SIMPLEX-VIRUS-INFECTION
LEUKEMIA NUCLEAR-BODIES
ACID TAGGING BONCAT
TYPE-1 INFECTION
INTRANUCLEAR LOCALIZATION
QUANTITATIVE PROTEOMICS
HERPESVIRUS SAIMIRI
FLUORESCENT PROTEIN
MAMMALIAN-CELLS
DNA-REPLICATION
Animals
Blotting, Western
Chlorocebus aethiops
Click Chemistry
Fluorescent Antibody Technique
Gene Expression Regulation, Viral
Herpes Simplex
Humans
Protein Biosynthesis
Vero Cells
Vero Cells
Animals
Humans
Herpes Simplex
Fluorescent Antibody Technique
Blotting, Western
Protein Biosynthesis
Gene Expression Regulation, Viral
Click Chemistry
Chlorocebus aethiops
Virology
0605 Microbiology
1107 Immunology
1108 Medical Microbiology
Publication Status
Published
Article Number
e1005927
Date Publish Online
2016-10-05