Evidence map›Paper›PMID 34319156›Full record

ArticleJournal of virology2021

Ebola Virus Requires Phosphatidylserine Scrambling Activity for Efficient Budding and Optimal Infectivity.

Marissa D Acciani, Maria F Lay Mendoza, Katherine E Havranek, Avery M Duncan, Hersha Iyer, Olivia L Linn, Melinda A Brindley

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
1.6field-weighted citation impact, top 14% 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

28 citing papers in PubMed, 29 citations in OpenAlex.

  1. Article
  2. Article
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  4. Review
  5. A cell-based scrambling assay reveals the phospholipid headgroup preference of TMEM16F on the plasma membrane.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
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  12. TMEM16F exacerbates tau pathology and mediates phosphatidylserine exposure in phospho-tau-burdened neurons.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  13. Article
  14. Article
  15. Review
  16. Pseudotyped Viruses for Mammarenavirus.Advances in experimental medicine and biology · 2023
    Article
  17. The Art of Viral Membrane Fusion and Penetration.Sub-cellular biochemistry · 2023
    Article
  18. HAP1, a new revolutionary cell model for gene editing using CRISPR-Cas9.Frontiers in cell and developmental biology · 2023
    Review
  19. Article
  20. 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

7 authors at 1 institution in 1 country.

Marissa D AccianiDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.
Maria F Lay MendozaDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.
Katherine E HavranekDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.
Avery M DuncanDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.
Hersha IyerDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.
Olivia L LinnDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.
Melinda A BrindleyDepartment of Infectious Diseases, Department of Population Health, College of Veterinary Medicine, University of Georgiagrid.213876.9, Athens, Georgia, USA.ORCID 0000-0002-4929-8085
University of Georgia · US

Funding

Defining the role of phosphatidylserine in hemorrhagic fever virus replicationR01AI139238 · NIAID · UNIVERSITY OF GEORGIA · PI BRINDLEY, MELINDA ANN · 2019 to 2023
$2.0M
HHS | NIH | National Institute of Allergy and Infectious Diseases (NIAID) R01AI139238NIAID NIH HHS R01 AI139238
6 · The paper itself

Abstract

Ebola virus (EBOV) attaches to target cells using two categories of cell surface receptors: C-type lectins and phosphatidylserine (PS) receptors. PS receptors typically bind to apoptotic cell membrane PS and orchestrate the uptake and clearance of apoptotic debris. Many enveloped viruses also contain exposed PS and can therefore exploit these receptors for cell entry. Viral infection can induce PS externalization in host cells, resulting in increased outer PS levels on budding virions. Scramblase enzymes carry out cellular PS externalization; thus, we targeted these proteins in order to manipulate viral envelope PS levels. We investigated two scramblases previously identified to be involved in EBOV PS levels, transmembrane protein 16F and Xk-related protein 8 (XKR8), as possible mediators of cellular and viral envelope surface PS levels during the replication of recombinant vesicular stomatitis virus containing its native glycoprotein (rVSV/G) or the EBOV glycoprotein (rVSV/EBOV-GP). We found that rVSV/G and rVSV/EBOV-GP virions produced in XKR8 knockout cells contain decreased levels of PS on their surfaces, and the PS-deficient rVSV/EBOV-GP virions are 70% less efficient at infecting cells through PS receptors. We also observed reduced rVSV and EBOV virus-like particle (VLP) budding in ΔXKR8 cells. Deletion of XKR8 in HAP1 cells reduced rVSV/G and rVSV/EBOV-GP budding by 60 and 65%, respectively, and reduced Ebola VLP budding more than 60%. We further demonstrated that caspase cleavage of XKR8 is required to promote budding. This suggests that XKR8, in addition to mediating virion PS levels, may also be critical for enveloped virus budding at the plasma membrane.

Indexed as

Cell LineEbolavirusGlycoproteinsHemorrhagic Fever, EbolaHumansPhosphatidylserinesPhospholipid Transfer ProteinsViral Envelope ProteinsVirionVirus AssemblyVirus ReleaseGlycoproteinsPhosphatidylserinesPhospholipid Transfer ProteinsViral Envelope ProteinsbuddingEbolaphosphatidylserineXKR8

Identifiers

PMID34319156
PMCPMC8475530
OpenAlexW3183640291

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.