Evidence map›Paper›PMID 31947771›Full record

ArticleCells2020

Involvement of the Gap Junction Protein, Connexin43, in the Formation and Function of Invadopodia in the Human U251 Glioblastoma Cell Line.

Amandine Chepied, Zeinaba Daoud-Omar, Annie-Claire Meunier-Balandre, Dale W Laird, Marc Mesnil, Norah Defamie

Open access · goldAbstract read
In one paragraph

Article in Cells, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

11 citing papers in PubMed, 26 citations in OpenAlex.

  1. Connexin-Pannexin duality in glioblastoma.Cell and tissue research · 2026
    Review
  2. E-Cadherin Is a Structuring Component of Invadopodia in Pancreatic Cancer.Journal of cellular and molecular medicine · 2025
    Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Connexins and Glucose Metabolism in Cancer.International journal of molecular sciences · 2022
    Review
  8. Article
  9. Review
  10. Article
  11. 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

6 authors at 2 institutions in 2 countries.

Amandine ChepiedEquipe 4CS, Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7003, Pôle Biologie Santé, University of Poitiers, 86073 Poitiers, France.
Zeinaba Daoud-OmarEquipe 4CS, Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7003, Pôle Biologie Santé, University of Poitiers, 86073 Poitiers, France.
Annie-Claire Meunier-BalandreEquipe 4CS, Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7003, Pôle Biologie Santé, University of Poitiers, 86073 Poitiers, France.
Dale W LairdDepartment of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, ON N6A 3K7, Canada.
Marc MesnilEquipe 4CS, Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7003, Pôle Biologie Santé, University of Poitiers, 86073 Poitiers, France.ORCID 0000-0003-4922-0365
Norah DefamieEquipe 4CS, Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7003, Pôle Biologie Santé, University of Poitiers, 86073 Poitiers, France.ORCID 0000-0002-7504-7538
Centre National de la Recherche Scientifique · FRWestern University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The resistance of glioblastomas to treatments is mainly the consequence of their invasive capacities. Therefore, in order to better treat these tumors, it is important to understand the molecular mechanisms which are responsible for this behavior. Previous work suggested that gap junction proteins, the connexins, facilitate the aggressive nature of glioma cells. Here, we show that one of them-connexin43 (Cx43)-is implicated in the formation and function of invadopodia responsible for invasion capacity of U251 human glioblastoma cells. Immunofluorescent approaches-combined with confocal analyses-revealed that Cx43 was detected in all the formation stages of invadopodia exhibiting proteolytic activity. Clearly, Cx43 appeared to be localized in invadopodia at low cell density and less associated with the establishment of gap junctions. Accordingly, lower extracellular matrix degradation correlated with less mature invadopodia and MMP2 activity when Cx43 expression was decreased by shRNA strategies. Moreover, the kinetics of invadopodia formation could be dependent on Cx43 dynamic interactions with partners including Src and cortactin. Interestingly, it also appeared that invadopodia formation and MMP2 activity are dependent on Cx43 hemichannel activity. In conclusion, these results reveal that Cx43 might be involved in the formation and function of the invadopodia of U251 glioblastoma cells.

Indexed as

Cell Line, TumorConnexin 43GelatinGene Knockdown TechniquesGlioblastomaHumansModels, BiologicalPodosomesProtein BindingProteolysisConnexin 43Gelatincell invasionconnexingap junctionglioblastomainvadopodia

Identifiers

PMID31947771
PMCPMC7017254
OpenAlexW2998105939

What Socratic 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 Socratic graph.