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Identification of host factors involved in coronavirus replication by quantitative proteomics analysis
Author(s) -
Vogels Mijke W.,
van Balkom Bas W. M.,
Kaloyanova Dora V.,
Batenburg Joseph J.,
Heck Albert J.,
Helms J. Bernd,
Rottier Peter J. M.,
de Haan Cornelis A. M.
Publication year - 2010
Publication title -
proteomics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.26
H-Index - 167
eISSN - 1615-9861
pISSN - 1615-9853
DOI - 10.1002/pmic.201000309
Subject(s) - stable isotope labeling by amino acids in cell culture , biology , viral replication , golgi apparatus , proteomics , coronavirus , virus , quantitative proteomics , microbiology and biotechnology , proteome , virology , gene , genetics , endoplasmic reticulum , disease , covid-19 , pathology , medicine , infectious disease (medical specialty)
Abstract In this study, we applied a quantitative proteomic approach, based on SILAC, to investigate the interactions of coronaviruses with the secretory pathway of the host cell, with the aim to identify host factors involved in coronavirus replication. Comparison of the protein profiles of Golgi‐enriched fractions of cells that were either mock infected or infected with mouse hepatitis virus revealed the significant depletion or enrichment of 116 proteins. Although ribosomal/nucleic acid binding proteins were enriched in the Golgi‐fractions of mouse hepatitis virus‐infected cells, proteins annotated to localize to several organelles of the secretory pathway were overrepresented among the proteins that were depleted from these fractions upon infection. We hypothesized that proteins, of which the abundance or distribution is affected by infection, are likely to be involved in the virus life cycle. Indeed, depletion of a small subset of the affected proteins by using small interfering RNAs identified several host factors involved in coronavirus infection. Transfection of small interfering RNAs targeting either C11orf59 or Golgi apparatus glycoprotein 1 resulted in increased virus replication, whereas depletion of vesicle‐trafficking protein vesicle‐trafficking protein sec22b enhanced the release of infectious progeny virus. Overexpression of these proteins, on the other hand, had a negative effect on virus replication. Overall, our study shows that the SILAC approach is a suitable tool to study host–pathogen interactions and to identify host proteins involved in virus replication.