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RESEARCH PRODUCT

Extinct type of human parvovirus B19 persists in tonsillar B cells

Elina MäntyläLari PyöriäTaru IlmarinenKlaus HedmanMaria Söderlund-venermoLeena-maija AaltonenMaija Vihinen-rantaMari ToppinenLea HedmanMaria F. Perdomo

subject

0301 basic medicineSYNOVIAL TISSUEvirusesPalatine TonsilGeneral Physics and AstronomyAntibodies ViralGenotypeINFECTIONParvovirus B19 HumanREAL-TIME PCRChildCells CulturedB-LymphocytesMultidisciplinarybiologyQcell type harbouringvirus diseasesU937 CellsMiddle Aged3. Good healthHUMAN ERYTHROVIRUSESsolutReal-time polymerase chain reactionmedicine.anatomical_structurePLASMA-CELLSChild PreschoolGENETIC DIVERSITYAntibodyAdultCell typeAdolescentGenotypeBONE-MARROWScience030106 microbiologyQUANTITATIVE PCRta3111ArticleGeneral Biochemistry Genetics and Molecular BiologyCell LineParvoviridae InfectionsYoung Adult03 medical and health sciencesImmune systemCell Line TumormedicineHumansAgedB cellsparvovirus B19ParvovirusMonocyteta1182General ChemistryDNAvirus typesbiology.organism_classificationVirologyCELLULAR CORECEPTOR030104 developmental biologyCell cultureDNA ViralImmunologybiology.proteincells3111 Biomedicine

description

Parvovirus B19 (B19V) DNA persists lifelong in human tissues, but the cell type harbouring it remains unclear. We here explore B19V DNA distribution in B, T and monocyte cell lineages of recently excised tonsillar tissues from 77 individuals with an age range of 2–69 years. We show that B19V DNA is most frequent and abundant among B cells, and within them we find a B19V genotype that vanished from circulation >40 years ago. Since re-infection or re-activation are unlikely with this virus type, this finding supports the maintenance of pathogen-specific humoral immune responses as a consequence of B-cell long-term survival rather than continuous replenishment of the memory pool. Moreover, we demonstrate the mechanism of B19V internalization to be antibody dependent in two B-cell lines as well as in ex vivo isolated tonsillar B cells. This study provides direct evidence for a cell type accountable for B19V DNA tissue persistence.

yearjournalcountryeditionlanguage
2017-04-04Nature Communications
10.1038/ncomms14930https://doaj.org/article/c361ff35670e4ffbbdd991ab4dfb34ac