» Articles » PMID: 27010636

The Lymphocytic Choriomeningitis Virus Matrix Protein PPXY Late Domain Drives the Production of Defective Interfering Particles

Overview
Journal PLoS Pathog
Specialty Microbiology
Date 2016 Mar 25
PMID 27010636
Citations 23
Authors
Affiliations
Soon will be listed here.
Abstract

Arenaviruses cause severe diseases in humans but establish asymptomatic, lifelong infections in rodent reservoirs. Persistently-infected rodents harbor high levels of defective interfering (DI) particles, which are thought to be important for establishing persistence and mitigating virus-induced cytopathic effect. Little is known about what drives the production of DI particles. We show that neither the PPXY late domain encoded within the lymphocytic choriomeningitis virus (LCMV) matrix protein nor a functional endosomal sorting complex transport (ESCRT) pathway is absolutely required for the generation of standard infectious virus particles. In contrast, DI particle release critically requires the PPXY late domain and is ESCRT-dependent. Additionally, the terminal tyrosine in the PPXY motif is reversibly phosphorylated and our findings indicate that this posttranslational modification may regulate DI particle formation. Thus we have uncovered a new role for the PPXY late domain and a possible mechanism for its regulation.

Citing Articles

Seoul orthohantavirus evades innate immune activation by reservoir endothelial cells.

Klimaj S, LaPointe A, Martinez K, Acosta E, Kell A PLoS Pathog. 2024; 20(11):e1012728.

PMID: 39585900 PMC: 11627401. DOI: 10.1371/journal.ppat.1012728.


Defective viral genomes: advances in understanding their generation, function, and impact on infection outcomes.

Brennan J, Sun Y mBio. 2024; 15(5):e0069224.

PMID: 38567955 PMC: 11077978. DOI: 10.1128/mbio.00692-24.


S RNA Intergenic Deletions Drive Viral Interference during Arenavirus Infections.

Hackbart M, Lopez C bioRxiv. 2023; .

PMID: 37961573 PMC: 10635013. DOI: 10.1101/2023.10.31.564889.


Persistent Reptarenavirus and Hartmanivirus Infection in Cultured Boid Cells.

Lintala A, Szirovicza L, Kipar A, Hetzel U, Hepojoki J Microbiol Spectr. 2022; 10(4):e0158522.

PMID: 35862992 PMC: 9430581. DOI: 10.1128/spectrum.01585-22.


Masitinib is a broad coronavirus 3CL inhibitor that blocks replication of SARS-CoV-2.

Drayman N, DeMarco J, Jones K, Azizi S, Froggatt H, Tan K Science. 2021; 373(6557):931-936.

PMID: 34285133 PMC: 8809056. DOI: 10.1126/science.abg5827.


References
1.
Garcia M, Reynolds T, Mothes W, Robek M . Functional characterization of the putative hepatitis B virus core protein late domain using retrovirus chimeras. PLoS One. 2013; 8(8):e72845. PMC: 3756966. DOI: 10.1371/journal.pone.0072845. View

2.
Votteler J, Sundquist W . Virus budding and the ESCRT pathway. Cell Host Microbe. 2013; 14(3):232-41. PMC: 3819203. DOI: 10.1016/j.chom.2013.08.012. View

3.
Klaus J, Eisenhauer P, Russo J, Mason A, Do D, King B . The intracellular cargo receptor ERGIC-53 is required for the production of infectious arenavirus, coronavirus, and filovirus particles. Cell Host Microbe. 2013; 14(5):522-34. PMC: 3999090. DOI: 10.1016/j.chom.2013.10.010. View

4.
Degasperi A, Birtwistle M, Volinsky N, Rauch J, Kolch W, Kholodenko B . Evaluating strategies to normalise biological replicates of Western blot data. PLoS One. 2014; 9(1):e87293. PMC: 3903630. DOI: 10.1371/journal.pone.0087293. View

5.
Strecker T, Eichler R, Ter Meulen J, Weissenhorn W, Klenk H, Garten W . Lassa virus Z protein is a matrix protein and sufficient for the release of virus-like particles [corrected]. J Virol. 2003; 77(19):10700-5. PMC: 228511. DOI: 10.1128/jvi.77.19.10700-10705.2003. View