Evidence map›Paper›PMID 21895608›Full record

ArticleThe Biochemical journal2011

Intracellular curvature-generating proteins in cell-to-cell fusion.

Jean-Philippe Richard, Evgenia Leikina, Ralf Langen, William Mike Henne, Margarita Popova, Tamas Balla, Harvey T McMahon, Michael M Kozlov, Leonid V Chernomordik

Open access · bronzeAbstract read
In one paragraph

Article in The Biochemical journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

32 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. Cell-cell fusion: To lose one life and begin another.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  3. Article
  4. Article
  5. Binucleated and Multinucleated Neurons are Formed by Fusion.Bulletin of experimental biology and medicine · 2021
    Article
  6. Article
  7. Article
  8. RNAi Screen inG3 (Bethesda, Md.) · 2019
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Membrane tension and membrane fusion.Current opinion in structural biology · 2015
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  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

9 authors at 2 institutions in 2 countries.

Jean-Philippe RichardSection on Membrane Biology, Laboratory of Cellular and Molecular Biophysics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892-1855, USA.
Evgenia Leikina
Ralf Langen
William Mike Henne
Margarita Popova
Tamas Balla
Harvey T McMahon
Michael M Kozlov
Leonid V Chernomordik
Medical Research Council · GBTel Aviv University · IL

Funding

Protein-mediated membrane remodelingZIAHD001501 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI CHERNOMORDIK, LEONID V. · 2009 to 2025
$30.7M
Phosphoinositide-calcium Signaling In Cell RegulationZIAHD000196 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI BALLA, TAMAS · 2009 to 2025
$26.3M
Structural Analysis of Protein-Membrane InteractionR01GM063915 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LANGEN, RALF · 2001 to 2012
$2.8M
Intramural NIH HHSMedical Research Council MC_U105178795NIGMS NIH HHS 2 R01 GM063915NIGMS NIH HHS R01 GM063915
6 · The paper itself

Abstract

Cell-to-cell fusion plays an important role in normal physiology and in different pathological conditions. Early fusion stages mediated by specialized proteins and yielding fusion pores are followed by a pore expansion stage that is dependent on cell metabolism and yet unidentified machinery. Because of a similarity of membrane bending in the fusion pore rim and in highly curved intracellular membrane compartments, in the present study we explored whether changes in the activity of the proteins that generate these compartments affect cell fusion initiated by protein fusogens of influenza virus and baculovirus. We raised the intracellular concentration of curvature-generating proteins in cells by either expressing or microinjecting the ENTH (epsin N-terminal homology) domain of epsin or by expressing the GRAF1 (GTPase regulator associated with focal adhesion kinase 1) BAR (Bin/amphiphysin/Rvs) domain or the FCHo2 (FCH domain-only protein 2) F-BAR domain. Each of these treatments promoted syncytium formation. Cell fusion extents were also influenced by treatments targeting the function of another curvature-generating protein, dynamin. Cell-membrane-permeant inhibitors of dynamin GTPase blocked expansion of fusion pores and dominant-negative mutants of dynamin influenced the syncytium formation extents. We also report that syncytium formation is inhibited by reagents lowering the content and accessibility of PtdIns(4,5)P(2), an important regulator of intracellular membrane remodelling. Our findings indicate that fusion pore expansion at late stages of cell-to-cell fusion is mediated, directly or indirectly, by intracellular membrane-shaping proteins.

Indexed as

Cell FusionAdaptor Proteins, Vesicular TransportAnimalsCell MembraneDynaminsGiant CellsHemagglutinins, ViralMembrane FusionMembrane ProteinsMiceNIH 3T3 CellsPhosphatidylinositol 4,5-DiphosphateProtein Structure, TertiaryAdaptor Proteins, Vesicular TransportDynaminsepsinhemagglutinin fusogenic peptide, influenza virusHemagglutinins, ViralMembrane ProteinsPhosphatidylinositol 4,5-Diphosphate

Identifiers

PMID21895608
PMCPMC3216009
OpenAlexW2146379608

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.