Journal
CELL REPORTS
Volume 33, Issue 2, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2020.108249
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Funding
- Medical Research Council [MR/R001405/1]
- NIHR Cambridge BRC
- Marie Sklodowska-Curie Individual Fellowship from the European Union's Framework Programme for Research and Innovation Horizon 2020 [656511]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [SFB900/3-158989968]
- MRC [MR/R001405/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [656511] Funding Source: Marie Curie Actions (MSCA)
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Kaposi's sarcoma herpesvirus (KSHV) is an oncogenic human virus and the leading cause of mortality in HIV infection. KSHV reactivation from latent- to lytic-stage infection initiates a cascade of viral gene expression. Here we show how these changes remodel the host cell proteome to enable viral replication. By undertaking a systematic and unbiased analysis of changes to the endothelial cell proteome following KSHV reactivation, we quantify >7,000 cellular proteins and 71 viral proteins and provide a temporal profile of protein changes during the course of lytic KSHV infection. Lytic KSHV induces >2-fold downregulation of 291 cellular proteins, including PKR, the key cellular sensor of double-stranded RNA. Despite the multiple episomes per cell, CRISPR-Cas9 efficiently targets KSHV genomes. A complementary KSHV genome-wide CRISPR genetic screen identifies K5 as the viral gene responsible for the downregulation of two KSHV targets, Nectin-2 and CD155, ligands of the NK cell DNAM-1 receptor.
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