Evidence map›Paper›PMID 34359995›Full record

ArticleCells2021

The Phosphatidylserine Receptor TIM-1 Enhances Authentic Chikungunya Virus Cell Entry.

Jared Kirui, Yara Abidine, Annasara Lenman, Koushikul Islam, Yong-Dae Gwon, Lisa Lasswitz, Magnus Evander, Marta Bally, Gisa Gerold

Open access · goldAbstract read
In one paragraph

Article in Cells, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

35 citing papers in PubMed, 48 citations in OpenAlex.

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  12. Infectomics of Chikungunya Virus: Roles Played by Host Factors.The American journal of tropical medicine and hygiene · 2025
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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

9 authors at 3 institutions in 2 countries.

Jared KiruiCentre for Experimental and Clinical Infection Research, TWINCORE, Institute for Experimental Virology, a Joint Venture between the Medical School Hannover and the Helmholtz Centre for Infection Research, 30625 Hannover, Germany.ORCID 0000-0003-1741-7606
Yara AbidineDepartment of Clinical Microbiology, Umeå University, 90185 Umeå, Sweden.ORCID 0000-0002-1612-7247
Annasara LenmanCentre for Experimental and Clinical Infection Research, TWINCORE, Institute for Experimental Virology, a Joint Venture between the Medical School Hannover and the Helmholtz Centre for Infection Research, 30625 Hannover, Germany.ORCID 0000-0001-5109-9408
Koushikul IslamDepartment of Clinical Microbiology, Umeå University, 90185 Umeå, Sweden.
Yong-Dae GwonDepartment of Clinical Microbiology, Umeå University, 90185 Umeå, Sweden.ORCID 0000-0002-0703-4188
Lisa LasswitzCentre for Experimental and Clinical Infection Research, TWINCORE, Institute for Experimental Virology, a Joint Venture between the Medical School Hannover and the Helmholtz Centre for Infection Research, 30625 Hannover, Germany.ORCID 0000-0002-0393-076X
Magnus EvanderDepartment of Clinical Microbiology, Umeå University, 90185 Umeå, Sweden.
Marta BallyDepartment of Clinical Microbiology, Umeå University, 90185 Umeå, Sweden.ORCID 0000-0002-5865-8302
Gisa GeroldCentre for Experimental and Clinical Infection Research, TWINCORE, Institute for Experimental Virology, a Joint Venture between the Medical School Hannover and the Helmholtz Centre for Infection Research, 30625 Hannover, Germany.ORCID 0000-0002-1326-5038
Umeå University · SEUniversity of Veterinary Medicine Hannover, Foundation · DEHelmholtz Centre for Infection Research · DE

Funding

German Academic Exchange Service (DAAD) 57320205Open Access funding Projekt DEALSwedish Research Council 2017-05607Wenner-Grens foundations postdoctoral fellowship UPD2018-0193
6 · The paper itself

Abstract

Chikungunya virus (CHIKV) is a re-emerging, mosquito-transmitted, enveloped positive stranded RNA virus. Chikungunya fever is characterized by acute and chronic debilitating arthritis. Although multiple host factors have been shown to enhance CHIKV infection, the molecular mechanisms of cell entry and entry factors remain poorly understood. The phosphatidylserine-dependent receptors, T-cell immunoglobulin and mucin domain 1 (TIM-1) and Axl receptor tyrosine kinase (Axl), are transmembrane proteins that can serve as entry factors for enveloped viruses. Previous studies used pseudoviruses to delineate the role of TIM-1 and Axl in CHIKV entry. Conversely, here, we use the authentic CHIKV and cells ectopically expressing TIM-1 or Axl and demonstrate a role for TIM-1 in CHIKV infection. To further characterize TIM-1-dependent CHIKV infection, we generated cells expressing domain mutants of TIM-1. We show that point mutations in the phosphatidylserine binding site of TIM-1 lead to reduced cell binding, entry, and infection of CHIKV. Ectopic expression of TIM-1 renders immortalized keratinocytes permissive to CHIKV, whereas silencing of endogenously expressed TIM-1 in human hepatoma cells reduces CHIKV infection. Altogether, our findings indicate that, unlike Axl, TIM-1 readily promotes the productive entry of authentic CHIKV into target cells.

Indexed as

Virus InternalizationAnimalsAntibodies, MonoclonalAxl Receptor Tyrosine KinaseCell LineCell Line, TumorChikungunya virusChlorocebus aethiopsCHO CellsCricetulusEndosomesEpithelial CellsFibroblastsGene ExpressionHEK293 CellsHepatitis A Virus Cellular Receptor 1Antibodies, MonoclonalAxl Receptor Tyrosine KinaseHAVCR1 protein, humanHepatitis A Virus Cellular Receptor 1Proto-Oncogene ProteinsReceptor Protein-Tyrosine KinasesReceptors, VirusRecombinant Fusion ProteinsalphavirusAxlAxl receptor tyrosine kinaseChikungunya virusCHIKVentryenveloped virusphosphatidylserineT-cell immunoglobulin and mucin domain 1TIM-1

Identifiers

PMID34359995
PMCPMC8303237
OpenAlexW3186235333

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.