0000000000287919

AUTHOR

Dieter Glebe

showing 4 related works from this author

N-terminal myristoylation-dependent masking of neutralizing epitopes in the preS1 attachment site of hepatitis B virus

2011

The N-terminally myristoylated preS1 domain of the large hepatitis B surface protein (LHBs) mediates specific attachment of hepatitis B virus (HBV) to hepatocytes. Its B-cell epitopes leading to neutralization of infectivity are not yet characterized.We inserted C- and N-terminal preS1 peptides into the most immunogenic region of HBV core particles, therewith immunized Balb/c mice and determined binding properties and neutralization potential of resulting antibodies in vitro.The particles with preS1 inserts were highly immunogenic and the corresponding anti-preS antibodies strongly bound to HBV particles from chronic carriers infected with different HBV genotypes A-F. However, antibodies bi…

Hepatitis B virusHBsAgGenotypeMolecular Sequence DataIn Vitro TechniquesBiologymedicine.disease_causeMyristic AcidNeutralizationEpitopeMice03 medical and health sciencesHepatitis B Chronic0302 clinical medicinemedicineAnimalsHumansHepatitis B VaccinesAmino Acid SequenceHepatitis B AntibodiesProtein Precursors030304 developmental biologyHepatitis B virusInfectivityMice Inbred BALB C0303 health sciencesBinding SitesHepatitis B Surface AntigensSequence Homology Amino AcidHepatologyHepatitis Bmedicine.diseaseAntibodies NeutralizingVirology3. Good healthEpitope mappingbiology.proteinEpitopes B-Lymphocyte030211 gastroenterology & hepatologyAntibodyEpitope MappingJournal of Hepatology
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Update of the statements on biology and clinical impact of occult hepatitis B virus infection

2019

In October 2018 a large number of international experts with complementary expertise came together in Taormina to participate in a workshop on occult hepatitis B virus infection (OBI). The objectives of the workshop were to review the existing knowledge on OBI, to identify issues that require further investigation, to highlight both existing controversies and newly emerging perspectives, and ultimately to update the statements previously agreed in 2008. This paper represents the output from the workshop.

0301 basic medicineOccult HBV infectionHepatitis B virusmedicine.medical_specialtyCarcinoma HepatocellularHepatocellular carcinomaHbv reactivationMEDLINEHBV reactivationOBImedicine.disease_cause03 medical and health sciences0302 clinical medicineHBV S variantRisk FactorsmedicineHumansHepatitis B AntibodiesIntensive care medicineComputingMilieux_MISCELLANEOUSHepatitis B virusHepatitis B Surface AntigensHepatologyHBV cccDNALiver Neoplasmsvirus diseasesHBV cccDNA; HBV reactivation; HBV S variants; HBV transmission; Hepatocellular carcinoma; OBI; Occult HBV infectionHBV S variantsHepatitis Bmedicine.diseaseOccultdigestive system diseases3. Good healthHBV S variants; HBV cccDNA; HBV reactivation; HBV transmission; Hepatocellular carcinoma; OBI; Occult HBV infection030104 developmental biologyLiverHepatocellular carcinomaDNA Viral030211 gastroenterology & hepatologyHBV transmission[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
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Peripheral blood dendritic cells are phenotypically and functionally intact in chronic hepatitis B virus (HBV) infection

2007

Summary Persistence of hepatitis B virus (HBV) infection is associated with reduced anti-viral T cell responses. Impaired dendritic cell (DC) function was suggested as the cause of reduced T cell stimulation in chronic HBV carriers. Thus, we compared myeloid (mDC) and plasmacytoid DC (pDC) from chronic HBV carriers and controls. Frequency and phenotype of isolated DC were analysed by fluorescence activated cell sorter staining, DC function by mixed lymphocyte reaction, cytokine bead array, intracellular cytokine staining, enzyme-linked immunosorbent assay and enzyme-linked immunospot. Expression of HBV DNA and mRNA was studied by polymerase chain reaction (PCR). Circulating total DC, mDC or…

AdultMaleHepatitis B virusHeterozygoteTranslational StudiesT cellImmunologyBone Marrow CellsLymphocyte Activationmedicine.disease_causeStatistics NonparametricVirusHepatitis B ChronicmedicineHumansImmunology and AllergyCytotoxic T cellLymphocyte CountHepatitis B virusbiologyDendritic CellsDendritic cellT helper cellHepatitis BFlow Cytometrybiology.organism_classificationmedicine.diseasemedicine.anatomical_structureHepadnaviridaeCase-Control StudiesDNA ViralImmunologyCytokinesRNA ViralFemaleLymphocyte Culture Test MixedT-Lymphocytes CytotoxicClinical and Experimental Immunology
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Recombinant Semliki Forest virus vectors encoding hepatitis B virus small surface and pre-S1 antigens induce broadly reactive neutralizing antibodies

2012

Most hepatitis B virus (HBV) vaccines consist of viral small surface (S) protein subtype adw2 expressed in yeast cells. In spite of good efficacy, HBV-genotype and subtype differences, escape mutants and insufficient Th1 activation remain potential problems. To address these problems, we generated recombinant Semliki Forest virus (rSFV) vectors encoding S protein, subtype adw2 or ayw2, or a fragment of the large surface protein, amino acids 1-48 of the pre-S1 domain, fused to S (pre-S1.1-48/S). The antigen loop in S protein and the selected pre-S1 sequences are known targets of neutralizing antibodies. BALB/c mice were immunized intravenously with 10(7) rSFV particles and 10(8) rSFV particl…

Hepatitis B virusAntiserumInfectivityHepatologybiologymedicine.disease_causeSemliki Forest virusbiology.organism_classificationVirologyMolecular biologyImmunoglobulin Glaw.inventionInfectious DiseasesAntigenlawVirologymedicineRecombinant DNAbiology.proteinAntibodyJournal of Viral Hepatitis
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