Evidence map›Paper›PMID 32047126›Full record

ArticlemBio2020

Encephalitic Alphaviruses Exploit Caveola-Mediated Transcytosis at the Blood-Brain Barrier for Central Nervous System Entry.

Hamid Salimi, Matthew D Cain, Xiaoping Jiang, Robyn A Roth, Wandy L Beatty, Chengqun Sun, William B Klimstra, Jianghui Hou, Robyn S Klein

Open access · goldAbstract read
In one paragraph

Article in mBio, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

44 citing papers in PubMed, 73 citations in OpenAlex.

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  14. Unraveling the complexities of neurotropic virus infection and immune evasion.Microbiology and molecular biology reviews : MMBR · 2025
    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

9 authors at 2 institutions in 1 country.

Hamid SalimiDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Matthew D CainDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Xiaoping JiangDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Robyn A RothDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Wandy L BeattyDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Chengqun SunDepartment of Immunology and Center for Vaccine Research, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
William B KlimstraDepartment of Immunology and Center for Vaccine Research, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Jianghui HouDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.
Robyn S KleinDepartment of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA rklein@wustl.edu.
Washington University in St. Louis · USUniversity of Pittsburgh · US

Funding

West Nile Virus and host control of innate defensesU19AI083019 · NIAID · UNIVERSITY OF WASHINGTON · PI CLARK, EDWARD A · 2009 to 2018
$22.5M
TAM Receptors and Virus InfectionR01AI101400 · NIAID · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI DIAMOND, MICHAEL S, KLEIN, ROBYN S. · 2012 to 2021
$5.8M
Neuroprotection and repair during West Nile Virus EncephalitisR01NS052632 · NINDS · WASHINGTON UNIVERSITY · PI KLEIN, ROBYN S. · 2005 to 2020
$5.0M
Molecular Mechanisms of Eastern Equine Encephalitis Virus PathogenesisR01AI095436 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KLIMSTRA, WILLIAM B · 2012 to 2022
$4.5M
NIAID NIH HHS R01 AI095436NIAID NIH HHS R01 AI101400NIAID NIH HHS U19 AI083019NINDS NIH HHS R01 NS052632
6 · The paper itself

Abstract

Venezuelan and western equine encephalitis viruses (VEEV and WEEV, respectively) invade the central nervous system (CNS) early during infection, via neuronal and hematogenous routes. While viral replication mediates host shutoff, including expression of type I interferons (IFN), few studies have addressed how alphaviruses gain access to the CNS during established infection or the mechanisms of viral crossing at the blood-brain barrier (BBB). Here, we show that hematogenous dissemination of VEEV and WEEV into the CNS occurs via caveolin-1 (Cav-1)-mediated transcytosis (Cav-MT) across an intact BBB, which is impeded by IFN and inhibitors of RhoA GTPase. Use of reporter and nonreplicative strains also demonstrates that IFN signaling mediates viral restriction within cells comprising the neurovascular unit (NVU), differentially rendering brain endothelial cells, pericytes, and astrocytes permissive to viral replication. Transmission and immunoelectron microscopy revealed early events in virus internalization and Cav-1 association within brain endothelial cells. Cav-1-deficient mice exhibit diminished CNS VEEV and WEEV titers during early infection, whereas viral burdens in peripheral tissues remained unchanged. Our findings show that alphaviruses exploit Cav-MT to enter the CNS and that IFN differentially restricts this process at the BBB.

Indexed as

TranscytosisVirus InternalizationAnimalsBlood-Brain BarrierCaveolaeCaveolin 1Cell LineCentral Nervous SystemEncephalitis Virus, Venezuelan EquineEncephalitis Virus, Western EquineEndothelial CellsMaleMice, Inbred C57BLVirus ReplicationCav1 protein, mouseCaveolin 1alphavirusblood-brain barriercaveola-mediated transcytosiscaveolin-1IFNARin vivo animal modeltranscytosis assaytype I interferonVenezuelan encephalitis viruswestern equine encephalitis virus

Identifiers

PMID32047126
PMCPMC7018649
OpenAlexW3005812692

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.