Evidence map›Paper›PMID 33878123›Full record

ArticlePLoS pathogens2021

Human parvovirus B19 interacts with globoside under acidic conditions as an essential step in endocytic trafficking.

Jan Bieri, Remo Leisi, Cornelia Bircher, Carlos Ros

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.4field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 25 citations in OpenAlex.

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  16. Nuclear entry and egress of parvoviruses.Molecular microbiology · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Jan BieriDepartment of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland.ORCID 0000-0001-8401-8002
Remo LeisiDepartment of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland.ORCID 0000-0001-7019-0098
Cornelia BircherDepartment of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland.ORCID 0000-0002-1755-0725
Carlos RosDepartment of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland.ORCID 0000-0002-6964-4002
University of Bern · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The glycosphingolipid (GSL) globoside (Gb4) is essential for parvovirus B19 (B19V) infection. Historically considered the cellular receptor of B19V, the role of Gb4 and its interaction with B19V are controversial. In this study, we applied artificial viral particles, genetically modified cells, and specific competitors to address the interplay between the virus and the GSL. Our findings demonstrate that Gb4 is not involved in the binding or internalization process of the virus into permissive erythroid cells, a function that corresponds to the VP1u cognate receptor. However, Gb4 is essential at a post-internalization step before the delivery of the single-stranded viral DNA into the nucleus. In susceptible erythroid Gb4 knockout cells, incoming viruses were arrested in the endosomal compartment, showing no cytoplasmic spreading of capsids as observed in Gb4-expressing cells. Hemagglutination and binding assays revealed that pH acts as a switch to modulate the affinity between the virus and the GSL. Capsids interact with Gb4 exclusively under acidic conditions and dissociate at neutral pH. Inducing a specific Gb4-mediated attachment to permissive erythroid cells by acidification of the extracellular environment led to a non-infectious uptake of the virus, indicating that low pH-mediated binding to the GSL initiates active membrane processes resulting in vesicle formation. In summary, this study provides mechanistic insight into the interaction of B19V with Gb4. The strict pH-dependent binding to the ubiquitously expressed GSL prevents the redirection of the virus to nonpermissive tissues while promoting the interaction in acidic intracellular compartments as an essential step in infectious endocytic trafficking.

Indexed as

CapsidCapsid ProteinsEndocytosisGlobosidesGlycosphingolipidsHumansParvovirus B19, HumanReceptors, VirusVirionVirus InternalizationCapsid ProteinsGlobosidesGlycosphingolipidsReceptors, Virus

Identifiers

PMID33878123
PMCPMC8087101
OpenAlexW3134462686

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.