Thromb Haemost 2015; 114(06): 1175-1188
DOI: 10.1160/TH14-11-0958
Cellular Haemostasis and Platelets
Schattauer GmbH

Fibrillar cellular fibronectin supports efficient platelet aggregation and procoagulant activity

Eric Maurer
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
,
Mathieu Schaff
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
,
Nicolas Receveur
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
,
Catherine Bourdon
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
,
Luc Mercier
5   UMR_S1109, Inserm, Strasbourg, France
6   CHU Hautepierre, Strasbourg, France
,
Bernhard Nieswandt
7   University Hospital Würzburg, Würzburg, Germany
8   Rudolf Virchow Center, DFG Research Center for Experimental Biomedicine, University of Würzburg, Würzburg, Germany
,
Christophe Dubois
9   UMR_S1076, Inserm, Marseille, France
10   Faculté de Pharmacie, Marseille, France
,
Martine Jandrot-Perrus
11   UMR_S1148, Inserm, France
12   CHU Bichat, Paris, France
,
Jacky G. Goetz
5   UMR_S1109, Inserm, Strasbourg, France
6   CHU Hautepierre, Strasbourg, France
,
François Lanza
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
,
Christian Gachet
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
,
Pierre H. Mangin
1   Unité mixte de recherche (UMR)_S949, Inserm, Strasbourg, France
2   Etablissement Français du Sang-Alsace (EFS-Alsace), Strasbourg, France
3   Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
4   Université de Strasbourg, Strasbourg, France
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Financial support : This work was supported by INSERM, EFS, ARMESA (Association de Recherche et Développement en Médecine et Santé Publique), the Fondation de France (grant 2011–00020448) and a European FP7 grant (PRESTIGE 260309). Mathieu Schaff was supported by a “Contrat doctoral” from the French government and Eric Maurer by an “INSERM-Région Alsace” fellowship.
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Publikationsverlauf

Received: 18. November 2014

Accepted after major revision: 21. Juni 2015

Publikationsdatum:
30. November 2017 (online)

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Summary

The ability of cellular fibronectin, found in the vessel wall in a fibrillar conformation, to regulate platelet functions and trigger thrombus formation remains largely unknown. In this study, we evaluated how parietal cellular fibronectin can modulate platelet responses under flow conditions. A fibrillar network was formed by mechanically stretching immobilised dimeric cellular fibronectin. Perfusion of anticoagulated whole blood over this surface resulted in efficient platelet adhesion and thrombus growth. The initial steps of platelet adhesion and activation, as evidenced by filopodia extension and an increase in intracellular calcium levels (419 ± 29 nmol/l), were dependent on integrins α5β1 and αIIbβ3. Subsequent thrombus growth was mediated by these integrins together with the GPIb-V-IX complex, GPVI and Toll-like receptor 4. The involvement of Toll-like receptor 4 could be conveyed via its binding to the EDA region of cellular fibronectin. Upon thrombus formation, the platelets became procoagulant and generated fibrin as revealed by video-microscopy. This work provides evidence that fibrillar cellular fibronectin is a strong thrombogenic surface which supports efficient platelet adhesion, activation, aggregation and procoagulant activity through the interplay of a series of receptors including integrins α5β1 and αIIbβ3, the GPIb-V-IX complex, GPVI and Toll-like receptor 4.