0000000000388765

AUTHOR

Marcus-folker Pahl-seibert

showing 5 related works from this author

Experimental Preemptive Immunotherapy of Murine Cytomegalovirus Disease with CD8 T-Cell Lines Specific for ppM83 and pM84, the Two Homologs of Human …

2001

ABSTRACTCD8 T cells are the principal antiviral effectors controlling cytomegalovirus (CMV) infection. For human CMV, the virion tegument protein ppUL83 (pp65) has been identified as a source of immunodominant peptides and is regarded as a candidate for cytoimmunotherapy and vaccination. Two sequence homologs of ppUL83 are known for murine CMV, namely the virion protein ppM83 (pp105) expressed late in the viral replication cycle and the nonstructural protein pM84 (p65) expressed in the early phase. Here we show that ppM83, unlike ppUL83, is not delivered into the antigen presentation pathway after virus penetration before or in absence of viral gene expression, while other virion proteins o…

Human cytomegalovirusMuromegalovirusmedicine.medical_treatmentImmunologyImmunodominanceCD8-Positive T-LymphocytesBiologyMicrobiologyCell LineViral Matrix ProteinsInterferon-gammaMiceImmune systemAntigenVirologyVaccines and Antiviral AgentsmedicineAnimalsCytotoxic T cellMice Inbred BALB CHerpesviridae InfectionsImmunotherapyPhosphoproteinsmedicine.diseaseAdoptive TransferVirologyPeptide FragmentsDisease Models AnimalViral replicationInsect ScienceImmunologyFemaleCytokine secretionImmunologic MemoryJournal of Virology
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Highly protective in vivo function of cytomegalovirus IE1 epitope-specific memory CD8 T cells purified by T-cell receptor-based cell sorting.

2005

ABSTRACTReconstitution of antiviral CD8 T cells is essential for controlling cytomegalovirus (CMV) infection after bone marrow transplantation. Accordingly, polyclonal CD8 T cells derived from BALB/c mice infected with murine CMV protect immunocompromised adoptive transfer recipients against CMV disease. The protective population comprises CD8 T cells with T-cell receptors (TCRs) specific for defined and for as-yet-unknown viral epitopes, as well as a majority of nonprotective cells with unrelated specificities. Defined epitopes include IE1/m123 and m164, which are immunodominant in terms of the magnitude of the CD8 T-cell response, and a panel of subordinate epitopes (m04, m18, M45, M83, a…

Adoptive cell transferMuromegalovirusReceptors Antigen T-Cell alpha-betaImmunologyEpitopes T-LymphocyteImmunodominanceCell SeparationBiologyCD8-Positive T-LymphocytesMajor histocompatibility complexMicrobiologyEpitopeImmediate-Early ProteinsMiceViral ProteinsVirologyCytotoxic T cellAnimalsMice Inbred BALB CImmunodominant EpitopesT-cell receptorvirus diseasesHerpesviridae InfectionsCell sortingFlow CytometryVirologyMolecular biologyAdoptive TransferDisease Models AnimalInsect Sciencebiology.proteinPathogenesis and ImmunityImmunologic MemoryCD8Journal of virology
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Enrichment of Immediate-Early 1 (m123/pp89) Peptide-Specific CD8 T Cells in a Pulmonary CD62LloMemory-Effector Cell Pool during Latent Murine Cytomeg…

2000

ABSTRACTInterstitial cytomegalovirus (CMV) pneumonia is a clinically relevant complication in recipients of bone marrow transplantation (BMT). Recent data for a model of experimental syngeneic BMT and concomitant infection of BALB/c mice with murine CMV (mCMV) have documented the persistence of tissue-resident CD8 T cells after clearance of productive infection of the lungs (J. Podlech, R. Holtappels, M.-F. Pahl-Seibert, H.-P. Steffens, and M. J. Reddehase, J. Virol. 74:7496–7507, 2000). It was proposed that these cells represent antiviral “standby” memory cells whose functional role might be to help prevent reactivation of latent virus. The pool of pulmonary CD8 T cells was composed of two…

ImmunologyCytomegalovirusPeptideCD8-Positive T-LymphocytesBiologyEffector cellMicrobiologyImmediate-Early ProteinsMiceInterleukin 21Latent VirusAntigenVirologyAnimalsCytotoxic T cellAntigens ViralLungAntigenic peptidechemistry.chemical_classificationMice Inbred BALB Cvirus diseasesVirologyVirus LatencyCytomegalovirus infectionchemistryInsect ScienceCytomegalovirus InfectionsImmunologyPathogenesis and ImmunityFemaleImmunologic MemoryJournal of Virology
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Cytomegalovirus Misleads Its Host by Priming of CD8 T Cells Specific for an Epitope Not Presented in Infected Tissues

2003

Cytomegaloviruses (CMVs) code for several proteins that inhibit the presentation of antigenic peptides to CD8 T cells. Although the molecular mechanisms of CMV interference with the major histocompatibility complex class I pathway are long understood, surprisingly little evidence exists to support a role in vivo. Here we document the first example of the presentation of an antigenic peptide being blocked by a CMV immune evasion protein in organs relevant to CMV disease. Although this Db-restricted peptide, which is derived from the antiapoptotic protein M45 of murine CMV (mCMV), is classified as an immunodominant peptide based on response magnitude and long-term memory, adoptive transfer of…

Adoptive cell transferImmunologyMutantCytomegalovirusPriming (immunology)PeptideCD8-Positive T-LymphocytesBiologyLymphocyte ActivationMajor histocompatibility complexEpitopeImmune systemHumansImmunology and AllergyCytotoxic T cellimmune evasionchemistry.chemical_classificationimmune controlimmunodominanceImmunomagnetic SeparationBrief Definitive Reportvirus diseasesAdoptive TransferVirologyantigen presentationchemistryCytomegalovirus InfectionsImmunologybiology.proteincross-primingImmunologic MemoryJournal of Experimental Medicine
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Murine model of interstitial cytomegalovirus pneumonia in syngeneic bone marrow transplantation: persistence of protective pulmonary CD8-T-cell infil…

2000

ABSTRACTInterstitial pneumonia (IP) is a severe organ manifestation of cytomegalovirus (CMV) disease in the immunocompromised host, in particular in recipients of bone marrow transplantation (BMT). Diagnostic criteria for the definition of CMV-IP include clinical evidence of pneumonia together with CMV detected in bronchoalveolar lavage or lung biopsy. We have used the model of syngeneic BMT and simultaneous infection of BALB/c mice with murine CMV for studying the pathogenesis of CMV-IP by controlled longitudinal analysis. A disseminated cytopathic infection of the lungs with fatal outcome was observed only when reconstituting CD8 T cells were depleted. Neither CD8 nor CD4 T cells mediated…

ImmunologyPneumonia ViralBiologyCD8-Positive T-LymphocytesLymphocyte ActivationMicrobiologyPathogenesisMiceVirologyImmunopathologymedicineCytotoxic T cellAnimalsHumansLungBone Marrow TransplantationMice Inbred BALB CLungmedicine.diagnostic_testSyngeneic Bone Marrow TransplantationDisease Models AnimalTransplantation Isogeneicmedicine.anatomical_structureBronchoalveolar lavagePhenotypeViral replicationInsect ScienceImmunologyCytomegalovirus InfectionsPathogenesis and ImmunityFemaleLung Diseases InterstitialCD8Journal of virology
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