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Masalceva AA, Kaneva VN, Panteleev MA, Ataullakhanov F, Volpert V, Afanasyev I, Nechipurenko DY. Analysis of microvascular thrombus mechanobiology with a novel particle-based model. J Biomech 2021; 130:110801. [PMID: 34768079 DOI: 10.1016/j.jbiomech.2021.110801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 08/20/2021] [Accepted: 09/16/2021] [Indexed: 11/18/2022]
Abstract
Platelet accumulation at the site of a vascular injury is regulated by soluble platelet agonists, which induce various types of platelet responses, including integrin activation and granule secretion. The interplay between local biochemical cues, mechanical interactions between platelets and macroscopic thrombus dynamics is poorly understood. Here we describe a novel computational model of microvascular clot formation for the detailed analysis of thrombus mechanics. We adopt a previously developed two-dimensional particle-based model focused on the thrombus shell formation and revise it to introduce the platelet agonists. Blood flow is simulated via a computational fluid dynamics approach. In order to model soluble platelet activators, we apply Langevin dynamics to a large number of non-dimensional virtual particles. Taking advantage of the available data on platelet dense granule secretion kinetics, we model platelet degranulation as a stochastic agonist-dependent process. The new model qualitatively reproduces the enhanced thrombus formation due to dense granule secretion, in line with in vivo findings, and provides a mechanism for the thrombin confinement at the early stages of clot formation. Our calculations also predict that the release of platelet dense granules results in the additional mechanical stabilization of the inner layers of thrombus. Distribution of the inter-platelet forces throughout the aggregate reveals multiple weak spots in the outer regions of a thrombus, which are expected to result in the mechanical disruptions at the later stages of clot formation.
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Affiliation(s)
- Anastasia A Masalceva
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Science, Moscow, Russia
| | - Valeriia N Kaneva
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Science, Moscow, Russia; Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Mikhail A Panteleev
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Science, Moscow, Russia; Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia; Faculty of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudnyi, Russia
| | - Fazoil Ataullakhanov
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Science, Moscow, Russia; Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia; Faculty of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudnyi, Russia
| | - Vitaly Volpert
- Institut Camille Jordan, UMR 5208 CNRS, University Lyon 1, 69622 Villeurbanne, France; INRIA Team Dracula, INRIA Lyon La Doua, 69603 Villeurbanne, France; Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow 117198, Russia
| | - Ilya Afanasyev
- Moscow Center of Fundamental and Applied Mathematics, Moscow, Russia; Research Computing Center of Moscow State University, Moscow, Russia
| | - Dmitry Yu Nechipurenko
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia; Center for Theoretical Problems of Physico-chemical Pharmacology, Russian Academy of Science, Moscow, Russia; Dmitry Rogachev National Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia.
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Redondo PC. miRNA and platelet genetic machinery. World J Hematol 2018; 7:1-3. [DOI: 10.5315/wjh.v7.i1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/14/2018] [Accepted: 11/02/2018] [Indexed: 02/05/2023] Open
Abstract
Platelets are responsible for blood haemostasis. Although anucleate, a complete translational machinery has been found in platelets, which is responsible for new protein generation. Recently, the role of miRNAs in platelets has started to become apparent. In this editorial I highlight this topic in the hope that other scientists may be attracted to work in this area to aid a more complete understanding of protein regulation in platelets and its impact on platelet function.
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Affiliation(s)
- Pedro C Redondo
- Department of Physiology, Institute of Molecular Pathology Biomarkers, University of Extremadura, Caceres 10003, Spain
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