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Puspitasari YM, Ministrini S, Han J, Karch C, Prisco F, Liberale L, Bengs S, Akhmedov A, Montecucco F, Beer JH, Lüscher TF, Bongiovanni D, Camici GG. Hutchinson-Gilford progeria syndrome mice display accelerated arterial thrombus formation and increased platelet reactivity. Thromb Res 2024; 241:109100. [PMID: 39032390 DOI: 10.1016/j.thromres.2024.109100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 07/12/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
INTRODUCTION Hutchinson-Gilford Progeria Syndrome (HGPS) is an ultra-rare premature aging genetic disorder caused by a point mutation in the lamin A gene, LMNA. Children with HGPS display short lifespans and typically die due to myocardial infarction or ischemic stroke, both acute cardiovascular events that are tightly linked to arterial thrombosis. Despite this fact, the effect of the classic HGPS LMNA gene mutation on arterial thrombosis remains unknown. METHODS Heterozygous LmnaG609G knock-in (LmnaG609G/+) mice, yielding an equivalent classic mutation observed in HGPS patients (c.1824C>T; pG608G mutation in the human LMNA gene) and corresponding wild-type (WT) control littermates underwent photochemically laser-induced carotid injury to trigger thrombosis. Coagulation and fibrinolytic factors were measured. Furthermore, platelet activation and reactivity were investigated. RESULTS LmnaG609G/+ mice displayed accelerated arterial thrombus formation, as underlined by shortened time to occlusion compared to WT littermates. Levels of factors involved in the coagulation and fibrinolytic system were comparable between groups, while LmnaG609G/+ animals showed higher plasma levels of thrombin-antithrombin complex and lower levels of antithrombin. Bone marrow analysis showed larger megakaryocytes in progeric mice. Lastly, enhanced platelet activation upon adenosine diphosphate, collagen-related peptide, and thrombin stimulation was observed in LmnaG609G/+ animals compared to the WT group, indicating a higher platelet reactivity in progeric animals. CONCLUSIONS LMNA mutation in HGPS mice accelerates arterial thrombus formation, which is mediated, at least in part, by enhanced platelet reactivity, which consequently augments thrombin generation. Given the wide spectrum of antiplatelet agents available clinically, further investigation is warranted to consider the most suitable antiplatelet regimen for children with HGPS to mitigate disease mortality and morbidity.
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Affiliation(s)
| | - Stefano Ministrini
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland; Internal Medicine, Angiology and Atherosclerosis, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Jiaying Han
- Department of Internal Medicine I, School of Medicine, University Hospital rechts der Isar, Technical University of Munich, Munich, Germany
| | - Caroline Karch
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Francesco Prisco
- Laboratory for Animal Model Pathology, Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Switzerland
| | - Luca Liberale
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino Genoa - Italian Cardiovascular Network, Genoa, Italy
| | - Susan Bengs
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Alexander Akhmedov
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, Genoa, Italy; IRCCS Ospedale Policlinico San Martino Genoa - Italian Cardiovascular Network, Genoa, Italy
| | - Jürg H Beer
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland; Department of Internal Medicine, Cantonal Hospital of Baden, Baden, Switzerland
| | - Thomas F Lüscher
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland; Department of Cardiology, Royal Brompton & Harefield Hospitals, National Heart & Lung Institute, Imperial College, London, United Kingdom
| | - Dario Bongiovanni
- Department of Internal Medicine I, Cardiology, University Hospital Augsburg, University of Augsburg, Augsburg, Germany; Department of Cardiovascular Medicine, Humanitas Clinical and Research Center IRCCS and Humanitas University, Rozzano, Milan, Italy
| | - Giovanni G Camici
- Center for Molecular Cardiology, University of Zurich, Schlieren, Switzerland; Department of Research and Education, University Hospital Zurich, Zurich, Switzerland.
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Hindle MS, Cheah LT, Yates DM, Naseem KM. Preanalytical conditions for multiparameter platelet flow cytometry. Res Pract Thromb Haemost 2023; 7:102205. [PMID: 37854456 PMCID: PMC10579537 DOI: 10.1016/j.rpth.2023.102205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 08/02/2023] [Accepted: 08/30/2023] [Indexed: 10/20/2023] Open
Abstract
Background Flow cytometry is an important technique for understanding multiple aspects of blood platelet biology. Despite the widespread use of the platform for assessing platelet function, the optimization and careful consideration of preanalytical conditions, sample processing techniques, and data analysis strategies should be regularly assessed. When set up and designed with optimal conditions, it can ensure the acquisition of robust and reproducible flow cytometry data. However, these parameters are rarely described despite their importance. Objectives We aimed to characterize the effects of several preanalytical variables on the analysis of blood platelets by multiparameter fluorescent flow cytometry. Methods We assessed anticoagulant choice, sample material, sample processing, and storage times on 4 distinct and commonly used markers of platelet activation, including fibrinogen binding, expression of CD62P and CD42b, and phosphatidylserine exposure. Results The use of suboptimal conditions led to increases in basal platelet activity and reduced sensitivities to stimulation; however, the use of optimal conditions protected the platelets from artifactual stimulation and preserved basal activity and sensitivity to activation. Conclusion The optimal preanalytical conditions identified here for the measurement of platelet phenotype by flow cytometry suggest a framework for future development of multiparameter platelet assays for high-quality data sets and advanced analysis.
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Affiliation(s)
- Matthew S. Hindle
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular & Metabolic Medicine, University of Leeds, UK
- Centre for Biomedical Science Research, School of Health, Leeds Beckett University, UK
| | - Lih T. Cheah
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular & Metabolic Medicine, University of Leeds, UK
| | - Daisie M. Yates
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular & Metabolic Medicine, University of Leeds, UK
| | - Khalid M. Naseem
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular & Metabolic Medicine, University of Leeds, UK
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Hamad MA, Krauel K, Schanze N, Gauchel N, Stachon P, Nuehrenberg T, Zurek M, Duerschmied D. Platelet Subtypes in Inflammatory Settings. Front Cardiovasc Med 2022; 9:823549. [PMID: 35463762 PMCID: PMC9021412 DOI: 10.3389/fcvm.2022.823549] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 03/09/2022] [Indexed: 12/24/2022] Open
Abstract
In addition to their essential role in hemostasis and thrombosis, platelets also modulate inflammatory reactions and immune responses. This is achieved by specialized surface receptors as well as secretory products including inflammatory mediators and cytokines. Platelets can support and facilitate the recruitment of leukocytes into inflamed tissue. The various properties of platelet function make it less surprising that circulating platelets are different within one individual. Platelets have different physical properties leading to distinct subtypes of platelets based either on their function (procoagulant, aggregatory, secretory) or their age (reticulated/immature, non-reticulated/mature). To understand the significance of platelet phenotypic variation, qualitatively distinguishable platelet phenotypes should be studied in a variety of physiological and pathological circumstances. The advancement in proteomics instrumentation and tools (such as mass spectrometry-driven approaches) improved the ability to perform studies beyond that of foundational work. Despite the wealth of knowledge around molecular processes in platelets, knowledge gaps in understanding platelet phenotypes in health and disease exist. In this review, we report an overview of the role of platelet subpopulations in inflammation and a selection of tools for investigating the role of platelet subpopulations in inflammation.
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Affiliation(s)
- Muataz Ali Hamad
- Department of Cardiology and Angiology I, Heart Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
- Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg im Breisgau, Germany
- Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany
| | - Krystin Krauel
- Department of Cardiology and Angiology I, Heart Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
- Department of Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Nancy Schanze
- Department of Cardiology and Angiology I, Heart Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
- Department of Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Nadine Gauchel
- Department of Cardiology and Angiology I, Heart Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Peter Stachon
- Department of Cardiology and Angiology I, Heart Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Thomas Nuehrenberg
- Department of Cardiology and Angiology II, Heart Center, Faculty of Medicine, University of Freiburg, Bad Krozingen, Germany
| | - Mark Zurek
- Department of Cardiology and Angiology II, Heart Center, Faculty of Medicine, University of Freiburg, Bad Krozingen, Germany
| | - Daniel Duerschmied
- Department of Cardiology and Angiology I, Heart Center, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
- Department of Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- European Center for AngioScience (ECAS) and German Center for Cardiovascular Research (DZHK) Partner Site Heidelberg/Mannheim, Mannheim, Germany
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