CDK9 and SPT5 proteins are specifically required for expression of herpes simplex virus 1 replication-dependent late genes

© 2017 by The American Society for Biochemistry and Molecular Biology, Inc..

DNA replication greatly enhances expression of the herpes simplex virus 1 (HSV-1) γ2 late genes by still unknown mechanisms. Here, we demonstrate that 5,6-dichloro-1-β-d-ribofuranosylbenzimidazole (DRB), an inhibitor of CDK9, suppresses expression of γ2 late genes with an IC50 of 5 μm, which is at least 10 times lower than the IC50 value required for inhibition of expression of early genes. The effect of DRB could not be explained by inhibition of DNA replication per se or loading of RNA polymerase II to late promoters and subsequent reduction of transcription. Instead, DRB reduces accumulation of γ2 late mRNA in the cytoplasm. In addition, we show that siRNA-mediated knockdown of the transcription factor SPT5, but not NELF-E, also gives rise to a specific inhibition of HSV-1 late gene expression. Finally, addition of DRB reduces co-immunoprecipitation of ICP27 using an anti-SPT5 antibody. Our results suggest that efficient expression of replication-dependent γ2 late genes is, at least in part, regulated by CDK9 dependent co- and/or post-transcriptional events involving SPT5 and ICP27.

Medienart:

E-Artikel

Erscheinungsjahr:

2017

Erschienen:

2017

Enthalten in:

Zur Gesamtaufnahme - volume:292

Enthalten in:

The Journal of biological chemistry - 292(2017), 37 vom: 15. Sept., Seite 15489-15500

Sprache:

Englisch

Beteiligte Personen:

Zhao, Zhiyuan [VerfasserIn]
Tang, Ka-Wei [VerfasserIn]
Muylaert, Isabella [VerfasserIn]
Samuelsson, Tore [VerfasserIn]
Elias, Per [VerfasserIn]

Links:

Volltext

Themen:

138673-72-0
53-85-0
Antiviral Agents
Chromosomal Proteins, Non-Histone
Cyclin-Dependent Kinase 9
Cyclin-dependent kinase (CDK)
Dichlororibofuranosylbenzimidazole
EC 2.7.11.22
Gene expression
Herpesvirus
ICP27 protein, human herpesvirus 1
Immediate-Early Proteins
Journal Article
Negative elongation factor
Nucleic Acid Synthesis Inhibitors
Post-transcriptional regulation
Protein Kinase Inhibitors
Research Support, Non-U.S. Gov't
SPT5 transcriptional elongation factor
Transcription Factors
Transcriptional Elongation Factors
Viral Proteins
Viral replication

Anmerkungen:

Date Completed 27.09.2017

Date Revised 05.02.2021

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1074/jbc.M117.806000

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM274184567