Evidence map›Paper›PMID 25421890›Full record

ReviewViruses2014

Implication of human endogenous retrovirus envelope proteins in placental functions.

Adjimon Gatien Lokossou, Caroline Toudic, Benoit Barbeau

Open access · goldAbstract readReview
In one paragraph

Review in Viruses, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

58 citing papers in PubMed, 99 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Genetic Diversity in theBiomolecules · 2025
    Article
  6. Review
  7. Phosphatidylinositol-3-phosphate mediates Arc capsid secretion through the multivesicular body pathway.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  8. Article
  9. Review
  10. Article
  11. Syncytin-1, syncytin-2 and suppressyn in human health and disease.Journal of molecular medicine (Berlin, Germany) · 2023
    Review
  12. Review
  13. Review
  14. Review
  15. Review
  16. Review
  17. Article
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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

3 authors at 1 institution in 1 country.

Adjimon Gatien LokossouDépartement des Sciences Biologiques and Centre de recherche BioMed, Université du Québec à Montréal, 2080 Saint-Urbain, Montréal, PQ H2X 3X8, Canada. gatien.lokossou@gmail.com.
Caroline ToudicDépartement des Sciences Biologiques and Centre de recherche BioMed, Université du Québec à Montréal, 2080 Saint-Urbain, Montréal, PQ H2X 3X8, Canada. caroline.toudic22@gmail.com.
Benoit BarbeauDépartement des Sciences Biologiques and Centre de recherche BioMed, Université du Québec à Montréal, 2080 Saint-Urbain, Montréal, PQ H2X 3X8, Canada. barbeau.benoit@uqam.ca.
Université du Québec à Montréal · CA

Funding

Canadian Institutes of Health Research MOP130561
6 · The paper itself

Abstract

Human endogenous retroviruses (ERVs) represent 8% of the total human genome. Although the majority of these ancient proviral sequences have only retained non-coding long terminal repeats (LTRs), a number of "endogenized" retroviral genes encode functional proteins. Previous studies have underlined the implication of these ERV-derived proteins in the development and the function of the placenta. In this review, we summarize recent findings showing that two ERV genes, termed Syncytin-1 and Syncytin-2, which encode former envelope (Env) proteins, trigger fusion events between villous cytotrophoblasts and the peripheral multinucleated syncytiotrophoblast layer. Such fusion events maintain the stability of this latter cell structure, which plays an important role in fetal development by the active secretion of various soluble factors, gas exchange and regulation of fetomaternal immunotolerance. We also highlight new studies showing that these ERV proteins, in addition to their localization at the cell surface of cytotrophoblasts, are also incorporated on the surface of various extracellular microvesicles, including exosomes. Such exosome-associated proteins could be involved in the various functions attributed to these vesicles and could provide a form of tropism. Additionally, through their immunosuppressive domains, these ERV proteins could also contribute to fetomaternal immunotolerance in a local and more distal manner. These various aspects of the implication of Syncytin-1 and -2 in placental function are also addressed in the context of the placenta-related disorder, preeclampsia.

Indexed as

Endogenous RetrovirusesExosomesFemaleGene Products, envHumansImmune TolerancePlacentaPre-EclampsiaPregnancyPregnancy ProteinsTrophoblastsViral Envelope ProteinsERVFRD-1 protein, humanGene Products, envPregnancy ProteinssyncytinViral Envelope Proteins

Identifiers

PMID25421890
PMCPMC4246240
OpenAlexW2067406742

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.