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Article Dans Une Revue Biomedical Physics & Engineering Express Année : 2022

In vitro differentiation of human cardiac fibroblasts into myofibroblasts: characterization using electrical impedance

Résumé

Abstract Cardiac arrhythmias represent about 50% of the cardiovascular diseases which are the first cause of mortality in the world. Implantable medical devices play a major role for treating these arrhythmias. Nevertheless the leads induce an unwanted biological phenomenon called fibrosis. This phenomenon begins at a cellular level and is effective at a macroscopic scale causing tissue remodelling with a local modification of the active cardiac tissue. Fibrosis mechanism is complex but at the cellular level, it mainly consists in cardiac fibroblasts activation and differentiation into myofibroblasts. We developed a simplified in vitro model of cardiac fibrosis, with human cardiac fibroblasts whom differentiation into myofibroblasts was promoted with TGF-β1. Our study addresses an unreported impedance-based method for real-time monitoring of in vitro cardiac fibrosis. The objective was to study whether the differentiation of cardiac fibroblasts in myofibroblasts had a specific signature on the cell index, an impedance-based feature measured by the xCELLigence system. Primary human cardiac fibroblasts were cultured along 6 days, with or without laminin coating, to study the role of this adhesion protein in cultures long-term maintenance. The cultures were characterized in the presence or absence of TGF-β1 and we obtained a significant cell index signature specific to the human cardiac fibroblasts differentiation.
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Dates et versions

hal-03843814 , version 1 (08-11-2022)

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Amelie Degache, Florence Poulletier de Gannes, Andre Garenne, Remy Renom, Yann Percherancier, et al.. In vitro differentiation of human cardiac fibroblasts into myofibroblasts: characterization using electrical impedance. Biomedical Physics & Engineering Express, 2022, 8 (5), pp.055007. ⟨10.1088/2057-1976/ac12e1⟩. ⟨hal-03843814⟩
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