The fate of Speckled protein 100 (Sp100) during herpesviruses infection

Collados Rodriguez, M. (2021) The fate of Speckled protein 100 (Sp100) during herpesviruses infection. Frontiers in Cellular and Infection Microbiology, 10, 607526. (doi: 10.3389/fcimb.2020.607526) (PMID:33598438) (PMCID:PMC7882683)

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The constitutive expression of Speckled-100 (Sp100) is known to restrict the replication of many clinically important DNA viruses. This pre-existing (intrinsic) immune defence to virus infection can be further upregulated upon interferon (IFN) stimulation as a component of the innate immune response. In humans, Sp100 is encoded by a single gene locus, which can produce alternatively spliced isoforms. The widely studied Sp100A, Sp100B, Sp100C and Sp100HMG have functions associated with the transcriptional regulation of viral and cellular chromatin, either directly through their characteristic DNA-binding domains, or indirectly through post-translational modification (PTM) and associated protein interaction networks. Sp100 isoforms are resident component proteins of promyelocytic leukemia-nuclear bodies (PML-NBs), dynamic nuclear sub-structures which regulate host immune defences against many pathogens. In the case of human herpesviruses, multiple protein antagonists are expressed to relieve viral DNA genome transcriptional silencing imposed by PML-NB and Sp100-derived proteinaceous structures, thereby stimulating viral propagation, pathogenesis, and transmission to new hosts. This review details how different Sp100 isoforms are manipulated during herpesviruses HSV1, VZV, HCMV, EBV and KSHV infection, identifying gaps in our current knowledge, and highlighting future areas of research.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Collados Rodriguez, Dr Milagros
Authors: Collados Rodriguez, M.
College/School:College of Medical Veterinary and Life Sciences > School of Infection & Immunity
College of Medical Veterinary and Life Sciences > School of Infection & Immunity > Centre for Virus Research
Journal Name:Frontiers in Cellular and Infection Microbiology
Publisher:Frontiers Media
ISSN (Online):2235-2988
Published Online:01 February 2021
Copyright Holders:Copyright © 2021 Collados Rodrıguez
First Published:First published in Frontiers in Cellular and Infection Microbiology 10:607526
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
656521The role of ubiquitin and ubiquitin-like proteins during viral infectionChris BoutellMedical Research Council (MRC)MC_UU_12014/5MVLS III - CENTRE FOR VIRUS RESEARCH