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<dc:title xml:lang="fr">Importance des propriétés mécaniques des cellules tumorales circulantes au cours du développement métastatique</dc:title>
<dcterms:alternative xml:lang="en">Importance of the mechanical properties of circulating tumor cells during metastatic development</dcterms:alternative>
<dc:subject xml:lang="fr">Cancer</dc:subject>
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<dc:subject xml:lang="fr">Mécanique cellulaire</dc:subject>
<dc:subject xml:lang="fr">Déformabilité</dc:subject>
<dc:subject xml:lang="fr">Viscosité</dc:subject>
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<dc:subject xml:lang="en">Viscosity</dc:subject>
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<dcterms:abstract xml:lang="fr">Les métastases apparaissent à la fin de la cascade métastatique, un processus complexe dans lequel plusieurs paramètres biomécaniques jouent un rôle important. La contribution de la déformabilité des cellules tumorales circulantes (CTCs) lors de la dissémination hématogène reste mal comprise. Mes travaux identifient la propriété de viscosité comme composante clé de la mécanique cellulaire impactant le comportement des CTCs dans les étapes intravasculaires de la cascade métastatique. Cette propriété intervient au cours de la déformation permettant aux CTCs de surmonter les contraintes aux sites d’occlusion, leur donnant ainsi accès à des itinéraires de circulation alternatifs dans des vaisseaux à petits diamètres où elles pourront se loger. La propriété de viscosité intervient encore au cours de l’étape d’extravasation en impactant le déclenchement du mécanisme de remodelage endothélial extirpant les cellules tumorales des vaisseaux où elles se trouvent arrêtées.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Metastasis occurs at the end of the metastatic cascade, a complex process in which several biomechanical parameters play an important role. The contribution of the deformability of circulating tumor cells (CTCs) during hematogenous dissemination remains poorly understood. My work identifies the property of viscosity as a key component of cell mechanics impacting the behavior of CTCs in the intravascular stages of the metastatic cascade. This property comes into play during deformation, enabling CTCs to overcome constraints at sites of occlusion, giving them access to alternative circulation routes in small-diameter vessels where they can lodge. The property of viscosity also comes into play during the extravasation stage as it impacts the triggering of the endothelial remodeling mechanism that extirpates arrested tumor cells from the circulation.</dcterms:abstract>
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