Evidence map›Paper›PMID 21190668›Full record

ArticleBiophysical journal2011

Dissociation of bimolecular αIIbβ3-fibrinogen complex under a constant tensile force.

Rustem I Litvinov, Valeri Barsegov, Andrew J Schissler, Andrew R Fisher, Joel S Bennett, John W Weisel, Henry Shuman

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
4.7field-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

40 citing papers in PubMed, 66 citations in OpenAlex.

  1. Biomechanical anticoagulation by spherical platelets in extracorporeal systems.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. A computational investigation of occlusive arterial thrombosis.Biomechanics and modeling in mechanobiology · 2024
    Article
  4. Review
  5. Article
  6. Receptor-Ligand Binding: Effect of Mechanical Factors.International journal of molecular sciences · 2023
    Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Dynamic bonds and their roles in mechanosensing.Current opinion in chemical biology · 2019
    Review
  16. Regulatory element in fibrin triggers tension-activated transition from catch to slip bonds.Proceedings of the National Academy of Sciences of the United States of America · 2018
    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

7 authors at 2 institutions in 1 country.

Rustem I LitvinovDepartment of Cell and Developmental Biology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA. litvinov@mail.med.upenn.edu
Valeri Barsegov
Andrew J Schissler
Andrew R Fisher
Joel S Bennett
John W Weisel
Henry Shuman
University of Pennsylvania · USUniversity of Massachusetts Lowell · US

Funding

Subcellular Mechanisms pf Platelet ActivationP01HL040387 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI BENNETT, JOEL S. · 1988 to 2018
$35.5M
Thrombosis Models CoreP01HL120846 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI ABRAMS, CHARLES S. · 2014 to 2018
$12.2M
THE ROLE OF SEMA4D/CD100 AND ITS RECEPTORS IN PLATELET BIOLOGY AND THROMBOSISP50HL081012 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI BRASS, LAWRENCE · 2006 to 2010
$11.9M
NHLBI NIH HHS HL40387NHLBI NIH HHS HL81012NHLBI NIH HHS P01 HL040387NHLBI NIH HHS P01 HL120846NHLBI NIH HHS P50 HL081012
6 · The paper itself

Abstract

The regulated ability of integrin αIIbβ3 to bind fibrinogen plays a crucial role in platelet aggregation, adhesion, and hemostasis. Employing an optical-trap-based electronic force clamp, we studied the thermodynamics and kinetics of αIIbβ3-fibrinogen bond formation and dissociation under constant unbinding forces, mimicking the forces of physiologic blood shear on a thrombus. The distribution of bond lifetimes was bimodal, indicating that the αIIbβ3-fibrinogen complex exists in two bound states with different mechanical stability. The αIIbβ3 antagonist, abciximab, inhibited binding without affecting the unbinding kinetics, whereas Mn²(+) biased the αIIbβ3-fibrinogen complex to the strong bound state with reduced off-rate. The average bond lifetimes decreased exponentially with increasing pulling force from ∼5 pN to 50 pN, suggesting that in this force range the αIIbβ3-fibrinogen interactions are classical slip bonds. We found no evidence for catch bonds, which is consistent with the known lack of shear-enhanced platelet adhesion on fibrinogen-coated surfaces. Taken together, these data provide important quantitative and qualitative characteristics of αIIbβ3-fibrinogen binding and unbinding that underlie the dynamics of platelet adhesion and aggregation in blood flow.

Indexed as

Tensile StrengthAbciximabAntibodies, MonoclonalBiomechanical PhenomenaFibrinogenHumansImmunoglobulin Fab FragmentsKineticsModels, BiologicalOptical TweezersPlatelet Glycoprotein GPIIb-IIIa ComplexProtein BindingThermodynamicsTime FactorsAbciximabAntibodies, MonoclonalFibrinogenImmunoglobulin Fab FragmentsPlatelet Glycoprotein GPIIb-IIIa Complex

Identifiers

PMID21190668
PMCPMC3010843
OpenAlexW2122060254

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.