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Martins Lima A, Saint Auguste DS, Cuenot F, Martins Cavaco AC, Lachkar T, Khawand CME, Fraga-Silva RA, Stergiopulos N. Standardization and Validation of Fluorescence-Based Quantitative Assay to Study Human Platelet Adhesion to Extracellular-Matrix in a 384-Well Plate. Int J Mol Sci 2020; 21:ijms21186539. [PMID: 32906775 PMCID: PMC7554887 DOI: 10.3390/ijms21186539] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 08/31/2020] [Accepted: 09/03/2020] [Indexed: 11/17/2022] Open
Abstract
Platelets play a crucial role in the immunological response and are involved in the pathological settings of vascular diseases, and their adhesion to the extracellular matrix is important to bring leukocytes close to the endothelial cells and to form and stabilize the thrombus. Currently there are several methods to study platelet adhesion; however, the optimal parameters to perform the assay vary among studies, which hinders their comparison and reproducibility. Here, a standardization and validation of a fluorescence-based quantitative adhesion assay to study platelet-ECM interaction in a high-throughput screening format is proposed. Our study confirms that fluorescence-based quantitative assays can be effectively used to detect platelet adhesion, in which BCECF-AM presents the highest sensitivity in comparison to other dyes.
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Affiliation(s)
- Augusto Martins Lima
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne Station 09, MED 3.2924, CH-1015 Lausanne, Switzerland
- Correspondence:
| | - Damian S. Saint Auguste
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
- Laboratory for Orthopaedic Technology, Institute for Biomechanics, Swiss Federal Institute of Technology Zurich, 8093 Zurich, Switzerland
| | - François Cuenot
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
| | - Ana C. Martins Cavaco
- Luis Costa Lab, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, 1649-028 Lisboa, Portugal;
| | - Tom Lachkar
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
| | - Cindy Marie Elodie Khawand
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
| | - Rodrigo A. Fraga-Silva
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
| | - Nikolaos Stergiopulos
- Laboratory of Hemodynamics and Cardiovascular Technology (LHTC), Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; (D.S.S.A.); (F.C.); (T.L.); (C.M.E.K.); (R.A.F.-S.); (N.S.)
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Abstract
Platelet aggregation is initiated by receptor activation coupled to intracellular signaling leading to activation of integrin alphaIIbbeta3. Recent advances in the study of platelet receptors for collagen, von Willebrand factor, thrombin, and adenosine diphosphate are providing new insights into the mechanisms of platelet aggregation.
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Affiliation(s)
- B Savage
- The Roon Research Center for Arteriosclerosis and Thrombosis, Division of Experimental Hemostasis and Thrombosis, Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037, USA
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Chiang TM, Cole F, Woo-Rasberry V, Kang ES. Role of Nitric Oxide Synthase in Collagen–Platelet Interaction: Involvement of Platelet Nonintegrin Collagen Receptor Nitrotyrosylation. Thromb Res 2001; 102:343-52. [PMID: 11369427 DOI: 10.1016/s0049-3848(01)00252-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Platelets possess the endothelial isoform of nitric oxide synthase (eNOS), which plays an important role in platelet function. Other laboratories, including ours, have reported that nitric oxide (NO) is released upon exposure of platelets to collagen, but the mechanism of the interaction is not yet established. The objective of this study is to examine the possible role of nonintegrin receptor nitrotyrosylation on collagen-induced platelet aggregation. Results of the study show that two platelet proteins with M(r) of 65- and 23-kDa proteins are nitrotyrosylated in a time-dependent manner after the addition of type I collagen. The M(r) 65-kDa protein is identified as the platelet receptor for type I collagen. The recombinant protein of the platelet receptor for type I collagen can also be nitrotyrosylated. The nitrotyrosylated recombinant protein loses its ability to inhibit type I collagen-induced platelet aggregation. In addition, the polyclonal anti-65 kDa immunoprecipitates eNOS suggesting that the platelet nonintegrin receptor for type I collagen is closely linked to the eNOS. These results demonstrate that the inhibitory effect of NO on collagen-induced platelet aggregation may be mediated by the nitrotyrosylation of the 65-kDa receptor.
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Affiliation(s)
- T M Chiang
- Veterans Affairs Medical Center and the Department of Medicine, University of Tennessee-Memphis, Memphis, TN 38104, USA.
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Chiang TM. A synthetic nonapeptide derived from the sequence of a platelet type I collagen receptor inhibits type I collagen-mediated platelet aggregation. Am J Med Sci 2000; 320:362-7. [PMID: 11149547 DOI: 10.1097/00000441-200012000-00002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We have cloned the platelet receptor for type I collagen, but the structure-function of the receptor has not been completely established. The purpose of this investigation was to identify a collagen binding site(s) of the platelet receptor. Three peptides were synthesized chemically. Each peptide serves as an inhibitor of type I collagen-induced platelet aggregation, ATP release, platelet protein phosphorylation, and platelet adhesion to artificial matrices and aortic segments. We show that a nonapeptide specifically inhibits type I collagen-induced platelet aggregation and the release of ATP in a dose-dependent fashion. The peptide also inhibits the binding of radiolabeled alpha (I) chain to washed platelets, the adhesion of radiolabeled platelets to type I collagen-coated petri dishes, rabbit aortic segments, and platelet protein phosphorylation. Deletion of this peptide region of the cloned cDNA abolishes the inhibitory effect of the recombinant protein on type I collagen-induced platelet aggregation. These findings support the likelihood that the nonapeptide forms part of the binding site of the platelet receptor for type I collagen.
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Affiliation(s)
- T M Chiang
- Veterans Affairs Medical Center and the Department of Medicine, University of Tennessee-Memphis, 38104, USA.
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