Evidence map›Paper›PMID 12724415›Full record

ArticleMolecular and cellular biology2003

Direct involvement of HERV-W Env glycoprotein in human trophoblast cell fusion and differentiation.

Jean-Louis Frendo, Delphine Olivier, Valérie Cheynet, Jean-Luc Blond, Olivier Bouton, Michel Vidaud, Michèle Rabreau, Danièle Evain-Brion, François Mallet

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 173 papers.

0numbers the graph read from it
0cells of the map it votes in
173citing papers in PubMed
34.2field-weighted citation impact, top 1% 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

173 citing papers in PubMed, 425 citations in OpenAlex.

  1. Article
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  9. Review
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  11. Receptor usage of Syncytin-1: ASCT2, but not ASCT1, is a functional receptor and effector of cell fusion in the human placenta.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Trophoblast Syncytialization: A Metabolic Crossroads.Results and problems in cell differentiation · 2024
    Article
  18. Article
  19. Early Syncytialization of the Ovine Placenta Revisited.Results and problems in cell differentiation · 2024
    Review
  20. Article

113 more citing papers are in PubMed but not listed here.

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 1 country.

Jean-Louis FrendoUnité INSERM 427, Faculté des Sciences Pharmaceutiques et Biologiques, Université René Descartes, 75006 Paris, France.
Delphine Olivier
Valérie Cheynet
Jean-Luc Blond
Olivier Bouton
Michel Vidaud
Michèle Rabreau
Danièle Evain-Brion
François Mallet
École Normale Supérieure de Lyon · FRDélégation Paris 5 · FRUniversité Paris Cité · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We recently demonstrated that the product of the HERV-W env gene, a retroviral envelope protein also dubbed syncytin, is a highly fusogenic membrane glycoprotein inducing the formation of syncytia on interaction with the type D mammalian retrovirus receptor. In addition, the detection of HERV-W Env protein (Env-W) expression in placental tissue sections led us to propose a role for this fusogenic glycoprotein in placenta formation. To evaluate this hypothesis, we analyzed the involvement of Env-W in the differentiation of primary cultures of human villous cytotrophoblasts that spontaneously differentiate by cell fusion into syncytiotrophoblasts in vitro. First, we observed that HERV-W env mRNA and glycoprotein expression are colinear with primary cytotrophoblast differentiation and with expression of human chorionic gonadotropin (hCG), a marker of syncytiotrophoblast formation. Second, we observed that in vitro stimulation of trophoblast cell fusion and differentiation by cyclic AMP is also associated with a concomitant increase in HERV-W env and hCG mRNA and protein expression. Finally, by using specific antisense oligonucleotides, we demonstrated that inhibition of Env-W protein expression leads to a decrease of trophoblast fusion and differentiation, with the secretion of hCG in culture medium of antisense oligonucleotide-treated cells being decreased by fivefold. Taken together, these results strongly support a direct role for Env-W in human trophoblast cell fusion and differentiation.

Indexed as

Cell DifferentiationCell FusionEndogenous RetrovirusesGene Products, envGiant CellsHumansImmunoblottingImmunohistochemistryOligonucleotidesOligonucleotides, AntisenseRNARNA, MessengerTime FactorsTrophoblastsGene Products, envOligonucleotidesOligonucleotides, AntisenseRNARNA, Messenger

Identifiers

PMID12724415
PMCPMC164757
OpenAlexW2102415181

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.