0000000000993699

AUTHOR

Kari Salokas

showing 4 related works from this author

Parvovirus nonstructural protein 2 interacts with chromatin-regulating cellular proteins

2022

Autonomous parvoviruses encode at least two nonstructural proteins, NS1 and NS2. While NS1 is linked to important nuclear processes required for viral replication, much less is known about the role of NS2. Specifically, the function of canine parvovirus (CPV) NS2 has remained undefined. Here we have used proximity-dependent biotin identification (BioID) to screen for nuclear proteins that associate with CPV NS2. Many of these associations were seen both in noninfected and infected cells, however, the major type of interacting proteins shifted from nuclear envelope proteins to chromatin-associated proteins in infected cells. BioID interactions revealed a potential role for NS2 in DNA remodel…

11832 Microbiology and virologyparvovirusesvirusesvirus diseasesViral Nonstructural Proteinsbiochemical phenomena metabolism and nutritionVirus ReplicationinfektiotChromatinCell Linecellular proteinsParvoviridae InfectionsParvovirusHumans1182 Biochemistry cell and molecular biology3111 Biomedicineproteiinitparvovirukset
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Promoter-Targeted Histone Acetylation of Chromatinized Parvoviral Genome Is Essential for the Progress of Infection

2015

ABSTRACT The association of host histones with parvoviral DNA is poorly understood. We analyzed the chromatinization and histone acetylation of canine parvovirus DNA during infection by confocal imaging and in situ proximity ligation assay combined with chromatin immunoprecipitation and high-throughput sequencing. We found that during late infection, parvovirus replication bodies were rich in histones bearing modifications characteristic of transcriptionally active chromatin, i.e., histone H3 lysine 27 acetylation (H3K27ac). H3K27ac, in particular, was located in close proximity to the viral DNA-binding protein NS1. Importantly, our results show for the first time that in the chromatinized …

Gene Expression Regulation Viral0301 basic medicineParvovirus CanineVirus IntegrationvirusesImmunologyGenome ViralMicrobiologyCell LineEpigenesis Geneticviral DNAHistonesParvoviridae Infections03 medical and health sciencesHistone H3VirologyAnimalsHistone codeNucleosomePromoter Regions GeneticEpigenomicsMicroscopy ConfocalbiologyLysinecanine parvovirushistone acetylationAcetylationHistone acetyltransferaseVirologyChromatinchromatinizationVirus-Cell Interactions3. Good healthChromatin030104 developmental biologyHistoneInsect ScienceDNA ViralCatsbiology.proteinChromatin immunoprecipitationJournal of Virology
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Comprehensive evaluation of coding region point mutations in microsatellite-unstable colorectal cancer

2018

Microsatellite instability (MSI) leads to accumulation of an excessive number of mutations in the genome, mostly small insertions and deletions. MSI colorectal cancers (CRCs), however, also contain more point mutations than microsatellite-stable (MSS) tumors, yet they have not been as comprehensively studied. To identify candidate driver genes affected by point mutations in MSI CRC, we ranked genes based on mutation significance while correcting for replication timing and gene expression utilizing an algorithm, MutSigCV. Somatic point mutation data from the exome kit-targeted area from 24 exome-sequenced sporadic MSI CRCs and respective normals, and 12 whole-genome-sequenced sporadic MSI CR…

0301 basic medicineMedicine (General)Candidate geneclinical evaluationgenetic identificationgenetic analysisQH426-470medicine.disease_causeChromatin Epigenetics Genomics & Functional Genomicswhole exome sequencingddc:590mutator genesingle nucleotide polymorphismddc:576.5Gene Regulatory NetworksExomeExome sequencingCancercancer cellGeneticsMutation1184 Genetics developmental biology physiology3. Good healthgenetic codesyöpägeenitpriority journalMolecular Medicinewild typepoint mutationSystems MedicineColorectal Neoplasmscongenital hereditary and neonatal diseases and abnormalitiesddc:025.063/5703122 Cancerscancer geneticsSingle-nucleotide polymorphismcolorectal cancerBiologygene frequencyta3111mikrosatelliititcolony formationR105W geneArticle03 medical and health sciencesR5-920Gene interactionReportGeneticsmedicineHumanscontrolled studyhumanneoplasmspaksusuolisyöpäPoint mutationgene interactionhuman celltumor-related geneMicrosatellite instabilityMolecular Sequence AnnotationSequence Analysis DNAmedicine.diseaseta3122digestive system diseaseshuman tissueSTK38L gene030104 developmental biologyvalidation processgene expressionSMARCB1 genemicrosatellite instability3111 Biomedicinegene replicationReports
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G2/M checkpoint regulation and apoptosis facilitate the nuclear egress of parvoviral capsids

2022

The nuclear export factor CRM1-mediated pathway is known to be important for the nuclear egress of progeny parvovirus capsids in the host cells with virus-mediated cell cycle arrest at G2/M. However, it is still unclear whether this is the only pathway by which capsids exit the nucleus. Our studies show that the nuclear egress of DNA-containing full canine parvovirus. capsids was reduced but not fully inhibited when CRM1-mediated nuclear export was prevented by leptomycin B. This suggests that canine parvovirus capsids might use additional routes for nuclear escape. This hypothesis was further supported by our findings that nuclear envelope (NE) permeability was increased at the late stages…

G2/M checkpointnuclear egress of capsidsgeenitisäntäsolutcyclin B1canine parvovirusapoptosisApoptosisCRM1Crm1bakteeritsolut1182 Biochemistry cell and molecular biology3111 BiomedicineCanine parvovirusparvoviruksetNuclear egress of capsidssolukiertosolubiologia
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