Evidence map›Paper›PMID 12634351›Full record

ArticleJournal of virology2003

Alpha4beta1 integrin acts as a cell receptor for murine polyomavirus at the postattachment level.

Maddalena Caruso, Laura Belloni, Olga Sthandier, Paolo Amati, Marie-Isabelle Garcia

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

24 citing papers in PubMed, 56 citations in OpenAlex.

  1. Review
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  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Sialic Acid Receptors of Viruses.Topics in current chemistry · 2015
    Review
  11. Nanoscale assemblies and their biomedical applications.Journal of the Royal Society, Interface · 2013
    Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
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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

5 authors at 1 institution in 1 country.

Maddalena CarusoDipartimento di Biotecnologie Cellulari ed Ematologia, Sezione di Genetica Molecolare, Istituto Pasteur-Fondazione Cenci Bolognetti, Università di Roma La Sapienza, Rome, Italy.
Laura Belloni
Olga Sthandier
Paolo Amati
Marie-Isabelle Garcia
Sapienza University of Rome · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The initial interaction of murine polyomavirus (Py) with host cells occurs through direct binding of the major capsid protein VP1 with cell membrane molecules containing terminal sialic acids; however, these Py receptor molecules have not yet been identified. Analysis of the capsid protein primary sequences of all murine strains revealed the presence of integrin ligand motifs in the DE and EF loops of VP1 (LDV and DLXXL, respectively) and at the N terminus of VP2 (DGE). We show that infectivity of the Py A2 strain in mouse Swiss 3T3 fibroblasts is significantly reduced only in the presence of natural integrin ligands carrying an LDV motif or antibodies directed against the alpha4 and beta1 integrin subunits. Furthermore, we demonstrate that expression of the alpha4 subunit in the alpha4-deficient BALB/c 3T3 cells increases viral infectivity. Addition of alpha4 function-blocking antibodies, prior to or after virus adsorption, blocks this increased infectivity without affecting virus binding to cells. Taken together, these data indicate that expression of alpha4 integrin enhances permissivity to Py, probably by acting as one of the postattachment receptors.

Indexed as

3T3 CellsAmino Acid MotifsAmino Acid SequenceAnimalsBinding SitesCapsid ProteinsIntegrin alpha4beta1LigandsMiceModels, BiologicalMolecular Sequence DataPolyomavirusReceptors, VirusSequence Homology, Amino AcidSialic AcidsCapsid ProteinsIntegrin alpha4beta1LigandsReceptors, VirusSialic AcidsVP1 protein, polyomavirus

Identifiers

PMID12634351
PMCPMC150644
OpenAlexW2023663057

What OpenQuestion holds

Textmetadata
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.