0000000000025632

AUTHOR

Susanne Schmalz

showing 3 related works from this author

Random, asynchronous, and asymmetric transcriptional activity of enhancer-flanking major immediate-early genes ie1/3 and ie2 during murine cytomegalo…

2001

ABSTRACT The lungs are a major organ site of cytomegalovirus (CMV) pathogenesis, latency, and recurrence. Previous work on murine CMV latency has documented a high load and an even distribution of viral genomes in the lungs after the resolution of productive infection. Initiation of the productive cycle requires expression of the ie1/3 transcription unit, which is driven by the immediate-early (IE) promoter P 1/3 and generates IE1 and IE3 transcripts by differential splicing. Latency is molecularly defined by the absence of IE3 transcripts specifying the essential transactivator protein IE3. In contrast, IE1 transcripts were found to be generated focally and randomly, reflecting sporadic P …

Lung DiseasesMuromegalovirusTranscription GeneticvirusesImmunologyReplicationEnhancer RNAsBiologyMicrobiologyImmediate early proteinImmediate-Early ProteinsTransactivationMiceViral ProteinsViral Envelope ProteinsTranscription (biology)VirologyVirus latencymedicineAnimalsEnhancerTranscription factorGenes Immediate-EarlyLungGeneticsMice Inbred BALB CMembrane Glycoproteinsvirus diseasesHerpesviridae Infectionsmedicine.diseaseUpstream EnhancerVirus LatencyEnhancer Elements GeneticInsect ScienceTrans-ActivatorsFemaleJournal of virology
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Focal Transcriptional Activity of Murine Cytomegalovirus during Latency in the Lungs

1999

ABSTRACT Interstitial pneumonia is a frequent and critical manifestation of human cytomegalovirus (CMV) disease in immunocompromised patients, in particular in recipients of bone marrow transplantation. Previous work in the murine CMV infection model has identified the lungs as a major organ site of CMV latency and recurrence. It was open to question whether the viral genome is transcriptionally silent or active during latency. Transcription could be latency associated and thus be part of the latency phenotype. Alternatively, transcriptional activity could reflect episodes of reactivation. We demonstrate here that transcription of the immediate-early (IE) transcription unit ie1-ie3 selectiv…

Human cytomegalovirusMaleMuromegalovirusTranscription GeneticRNA SplicingImmunologyReplicationBiologyMicrobiologyTransactivationExonMiceMuromegalovirusTranscription (biology)Bone MarrowRecurrenceVirologyVirus latencyGene expressionmedicineAnimalsGeneGenes Immediate-EarlyLungExonsmedicine.diseasebiology.organism_classificationVirologyVirus LatencyInsect ScienceImmunologyDNA ViralFemale
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In Vivo Replication of Recombinant Murine Cytomegalovirus Driven by the Paralogous Major Immediate-Early Promoter-Enhancer of Human Cytomegalovirus

1999

ABSTRACT Transcription of the major immediate-early (MIE) genes of cytomegaloviruses (CMV) is driven by a strong promoter-enhancer (MIEPE) complex. Transactivator proteins encoded by these MIE genes are essential for productive infection. Accordingly, the MIEPE is a crucial control point, and its regulation by activators and repressors is pertinent to virus replication. Since the MIEPE contains multiple regulatory elements, it was reasonable to assume that specific sequence motifs are irreplaceable for specifying the cell-type tropism and replication pattern. Recent work on murine CMV infectivity (A. Angulo, M. Messerle, U. H. Koszinowski, and P. Ghazal, J. Virol. 72:8502–8509, 1998) has do…

Human cytomegalovirusImmunologyReplicationCytomegalovirusBiologyVirus ReplicationRecombinant virusMicrobiologyMiceVirologymedicineAnimalsPromoter Regions GeneticEnhancerGenes Immediate-EarlyGeneIn Situ HybridizationTropismRecombination GeneticInfectivityMice Inbred BALB CPromotermedicine.diseaseVirologyEnhancer Elements GeneticLiverViral replicationInsect ScienceFemaleJournal of Virology
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