Regulation of the MIE Locus During HCMV Latency and Reactivation

Human cytomegalovirus (HCMV) is a ubiquitous herpesviral pathogen that results in life-long infection. HCMV maintains a latent or quiescent infection in hematopoietic cells, which is broadly defined by transcriptional silencing and the absence of de novo virion production. However, upon cell differe...

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Main Authors: Abigail L. Dooley, Christine M. O’Connor
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Pathogens
Subjects:
Online Access:https://www.mdpi.com/2076-0817/9/11/869
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author Abigail L. Dooley
Christine M. O’Connor
author_facet Abigail L. Dooley
Christine M. O’Connor
author_sort Abigail L. Dooley
collection DOAJ
description Human cytomegalovirus (HCMV) is a ubiquitous herpesviral pathogen that results in life-long infection. HCMV maintains a latent or quiescent infection in hematopoietic cells, which is broadly defined by transcriptional silencing and the absence of de novo virion production. However, upon cell differentiation coupled with immune dysfunction, the virus can reactivate, which leads to lytic replication in a variety of cell and tissue types. One of the mechanisms controlling the balance between latency and reactivation/lytic replication is the regulation of the major immediate-early (MIE) locus. This enhancer/promoter region is complex, and it is regulated by chromatinization and associated factors, as well as a variety of transcription factors. Herein, we discuss these factors and how they influence the MIE locus, which ultimately impacts the phase of HCMV infection.
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spelling doaj.art-1631ec4be31942a4aeb8dab0070337aa2023-11-20T18:13:42ZengMDPI AGPathogens2076-08172020-10-0191186910.3390/pathogens9110869Regulation of the MIE Locus During HCMV Latency and ReactivationAbigail L. Dooley0Christine M. O’Connor1Genomic Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44105, USAGenomic Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44105, USAHuman cytomegalovirus (HCMV) is a ubiquitous herpesviral pathogen that results in life-long infection. HCMV maintains a latent or quiescent infection in hematopoietic cells, which is broadly defined by transcriptional silencing and the absence of de novo virion production. However, upon cell differentiation coupled with immune dysfunction, the virus can reactivate, which leads to lytic replication in a variety of cell and tissue types. One of the mechanisms controlling the balance between latency and reactivation/lytic replication is the regulation of the major immediate-early (MIE) locus. This enhancer/promoter region is complex, and it is regulated by chromatinization and associated factors, as well as a variety of transcription factors. Herein, we discuss these factors and how they influence the MIE locus, which ultimately impacts the phase of HCMV infection.https://www.mdpi.com/2076-0817/9/11/869cytomegalovirusMIEPlatencyreactivationCMV
spellingShingle Abigail L. Dooley
Christine M. O’Connor
Regulation of the MIE Locus During HCMV Latency and Reactivation
Pathogens
cytomegalovirus
MIEP
latency
reactivation
CMV
title Regulation of the MIE Locus During HCMV Latency and Reactivation
title_full Regulation of the MIE Locus During HCMV Latency and Reactivation
title_fullStr Regulation of the MIE Locus During HCMV Latency and Reactivation
title_full_unstemmed Regulation of the MIE Locus During HCMV Latency and Reactivation
title_short Regulation of the MIE Locus During HCMV Latency and Reactivation
title_sort regulation of the mie locus during hcmv latency and reactivation
topic cytomegalovirus
MIEP
latency
reactivation
CMV
url https://www.mdpi.com/2076-0817/9/11/869
work_keys_str_mv AT abigailldooley regulationofthemielocusduringhcmvlatencyandreactivation
AT christinemoconnor regulationofthemielocusduringhcmvlatencyandreactivation