Evidence map›Paper›PMID 34648606›Full record

ArticlePLoS pathogens2021

Heparan sulfate proteoglycans serve as alternative receptors for low affinity LCMV variants.

André Volland, Michael Lohmüller, Emmanuel Heilmann, Janine Kimpel, Sebastian Herzog, Dorothee von Laer

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 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

20 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
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  15. Article
  16. Review
  17. Replicating-Competent VSV-Vectored Pseudotyped Viruses.Advances in experimental medicine and biology · 2023
    Article
  18. Pseudotyped Viruses for Mammarenavirus.Advances in experimental medicine and biology · 2023
    Article
  19. Article
  20. CD164 is a host factor for lymphocytic choriomeningitis virus entry.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
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

6 authors at 1 institution in 1 country.

André VollandInstitute of Virology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0003-2805-8215
Michael LohmüllerDivision of Developmental Immunology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0002-7712-3143
Emmanuel HeilmannInstitute of Virology, Medical University of Innsbruck, Innsbruck, Austria.
Janine KimpelInstitute of Virology, Medical University of Innsbruck, Innsbruck, Austria.
Sebastian HerzogDivision of Developmental Immunology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0001-7167-3489
Dorothee von LaerInstitute of Virology, Medical University of Innsbruck, Innsbruck, Austria.ORCID 0000-0001-5825-7237
Innsbruck Medical University · AT

Funding

Austrian Science Fund FWF P 30194
6 · The paper itself

Abstract

Members of the Old World Arenaviruses primarily utilize α-dystroglycan (α-DAG1) as a cellular receptor for infection. Mutations within the glycoprotein (GP) of lymphocytic choriomeningitis virus (LCMV) reduce or abrogate the binding affinity to α-DAG1 and thus influence viral persistence, kinetics, and cell tropism. The observation that α-DAG1 deficient cells are still highly susceptible to low affinity variants, suggests the use of an alternative receptor(s). In this study, we used a genome-wide CRISPR Cas9 knockout screen in DAG1 deficient 293T cells to identify host factors involved in α-DAG1-independent LCMV infection. By challenging cells with vesicular stomatitis virus (VSV), pseudotyped with the GP of LCMV WE HPI (VSV-GP), we identified the heparan sulfate (HS) biosynthesis pathway as an important host factor for low affinity LCMV infection. These results were confirmed by a genetic approach targeting EXTL3, a key factor in the HS biosynthesis pathway, as well as by enzymatic and chemical methods. Interestingly, a single point mutation within GP1 (S153F or Y155H) of WE HPI is sufficient for the switch from DAG1 to HS binding. Furthermore, we established a simple and reliable virus-binding assay, using directly labelled VSV-GP by intramolecular fusion of VSV-P and mWasabi, demonstrating the importance of HS for virus attachment but not entry in Burkitt lymphoma cells after reconstitution of HS expression. Collectively, our study highlights the essential role of HS for low affinity LCMV infection in contrast to their high affinity counterparts. Residual LCMV infection in double knockouts indicate the use of (a) still unknown entry receptor(s).

Indexed as

HEK293 CellsHeparan Sulfate ProteoglycansHumansLymphocytic ChoriomeningitisLymphocytic choriomeningitis virusReceptors, VirusHeparan Sulfate ProteoglycansReceptors, Virus

Identifiers

PMID34648606
PMCPMC8547738
OpenAlexW3206791861

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.