Evidence map›Paper›PMID 34440816›Full record

ArticleCells2021

Secretory Vesicles Are the Principal Means of SARS-CoV-2 Egress.

Sébastien Eymieux, Rustem Uzbekov, Yves Rouillé, Emmanuelle Blanchard, Christophe Hourioux, Jean Dubuisson, Sandrine Belouzard, Philippe Roingeard

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 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
3.4field-weighted citation impact, top 6% 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

38 citing papers in PubMed, 59 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. CD169Frontiers in cellular and infection microbiology · 2026
    Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Mechanisms underlying sex differences in autoimmunity.The Journal of clinical investigation · 2024
    Review
  14. Article
  15. Extracellular Vesicles: The Invisible Heroes and Villains of COVID-19 Central Neuropathology.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. Review
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

8 authors at 2 institutions in 2 countries.

Sébastien EymieuxINSERM U1259 MAVIVH, Université de Tours and CHRU de Tours, 37032 Tours, France.ORCID 0000-0002-4738-510X
Rustem UzbekovPlate-Forme IBiSA de Microscopie Electronique, Université de Tours and CHRU de Tours, 37032 Tours, France.ORCID 0000-0002-9336-5484
Yves RouilléU1019-UMR 9017-CIIL-Center for Infection and Immunity of Lille, Institut Pasteur de Lille, Université de Lille, CNRS, INSERM, CHU de Lille, 59000 Lille, France.ORCID 0000-0003-0788-9271
Emmanuelle BlanchardINSERM U1259 MAVIVH, Université de Tours and CHRU de Tours, 37032 Tours, France.ORCID 0000-0002-9541-5190
Christophe HouriouxINSERM U1259 MAVIVH, Université de Tours and CHRU de Tours, 37032 Tours, France.
Jean DubuissonU1019-UMR 9017-CIIL-Center for Infection and Immunity of Lille, Institut Pasteur de Lille, Université de Lille, CNRS, INSERM, CHU de Lille, 59000 Lille, France.ORCID 0000-0003-1626-7693
Sandrine BelouzardU1019-UMR 9017-CIIL-Center for Infection and Immunity of Lille, Institut Pasteur de Lille, Université de Lille, CNRS, INSERM, CHU de Lille, 59000 Lille, France.
Philippe RoingeardINSERM U1259 MAVIVH, Université de Tours and CHRU de Tours, 37032 Tours, France.ORCID 0000-0001-9131-3341
Université de Tours · FRCentre National de la Recherche Scientifique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The mechanisms of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) egress, similar to those of other coronaviruses, remain poorly understood. The virus buds in intracellular compartments and is therefore thought to be released by the biosynthetic secretory pathway. However, several studies have recently challenged this hypothesis. It has been suggested that coronaviruses, including SARS-CoV-2, use lysosomes for egress. In addition, a focused ion-beam scanning electron microscope (FIB/SEM) study suggested the existence of exit tunnels linking cellular compartments rich in viral particles to the extracellular space resembling those observed for the human immunodeficiency (HIV) in macrophages. Here, we analysed serial sections of Vero cells infected with SARS-CoV-2 by transmission electron microscopy (TEM). We found that SARS-CoV-2 was more likely to exit the cell in small secretory vesicles. Virus trafficking within the cells involves small vesicles, with each generally containing a single virus particle. These vesicles then fuse with the plasma membrane to release the virus into the extracellular space. This work sheds new light on the late stages of the SARS-CoV-2 infectious cycle of potential value for guiding the development of new antiviral strategies.

Indexed as

Virus ReplicationAnimalsChlorocebus aethiopsCOVID-19Microscopy, Electron, TransmissionSARS-CoV-2Secretory VesiclesVero CellsVirioncoronavirusCOVID-19SARS-CoV-2serial sectionstransmission electron microscopyvirus egressvirus release

Identifiers

PMID34440816
PMCPMC8393858
OpenAlexW3193211545

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.