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RESEARCH PRODUCT
Herpes simplex virus 1 induces egress channels through marginalized host chromatin
Carolyn A. LarabellCarolyn A. LarabellVisa RuokolainenSatu HakanenMarkko MyllysVesa AhoVeijo HukkanenMaija Vihinen-rantaJussi TimonenJussi TimonenElizabeth A. SmithElizabeth A. SmithPiritta PeriAnna Salvettisubject
0301 basic medicineanalysisvirusesHerpesvirus 1 Humanmedicine.disease_causeVirus Replicationlaw.inventionRussia[ SDV.CAN ] Life Sciences [q-bio]/CancerMicelaw2.1 Biological and endogenous factorsAetiologynuclear organisationTomographyB-LymphocytesMicroscopyMultidisciplinaryMicroscopy ConfocalTomography X-Rayta3141Chromatin3. Good healthCell biologyChromatinOther Physical SciencesInfectious Diseasesmedicine.anatomical_structureLytic cycleConfocalHost-Pathogen InteractionsVirusesFranceInfectionHumanConfocal030106 microbiology[SDV.CAN]Life Sciences [q-bio]/CancerBiologyta3111ElectronTime-Lapse ImagingArticleCell Line03 medical and health sciencesMicroscopy Electron TransmissionmedicineHerpes virusTransmissionAnimalsHumansCell Nucleusta114Herpesvirus 1ta1182VirionHerpes SimplexCell nucleus030104 developmental biologyHerpes simplex virusViral replicationCell cultureX-RaySexually Transmitted InfectionsBiochemistry and Cell BiologyElectron microscopeLaboratoriesdescription
AbstractLytic infection with herpes simplex virus type 1 (HSV-1) induces profound modification of the cell nucleus including formation of a viral replication compartment and chromatin marginalization into the nuclear periphery. We used three-dimensional soft X-ray tomography, combined with cryogenic fluorescence, confocal and electron microscopy, to analyse the transformation of peripheral chromatin during HSV-1 infection. Our data showed an increased presence of low-density gaps in the marginalized chromatin at late infection. Advanced data analysis indicated the formation of virus-nucleocapsid-sized (or wider) channels extending through the compacted chromatin of the host. Importantly, confocal and electron microscopy analysis showed that these gaps frequently contained viral nucleocapsids. These results demonstrated that HSV-1 infection induces the formation of channels penetrating the compacted layer of cellular chromatin and allowing for the passage of progeny viruses to the nuclear envelope, their site of nuclear egress.
year | journal | country | edition | language |
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2016-06-01 |