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<dc:title xml:lang="fr">Développement d'un médicament de thérapie innovante combiné basé sur un dispositif médical implantable polymérique et des cellules souches à des fins de prévention de l'arthrose débutante</dc:title>
<dcterms:alternative xml:lang="en">Development of a combined advanced therapy medicinal product based on a polymeric implantable medical device and stem cells for the prevention of early-stage osteoarthritis</dcterms:alternative>
<dc:subject xml:lang="fr">Médecine régénérative</dc:subject>
<dc:subject xml:lang="fr">Ingénierie tissulaire</dc:subject>
<dc:subject xml:lang="fr">Dispositifs médicaux implantables</dc:subject>
<dc:subject xml:lang="fr">Médicaments de thérapie innovante</dc:subject>
<dc:subject xml:lang="fr">Cellules souches mésenchymateuses</dc:subject>
<dc:subject xml:lang="fr">Arthrose débutante</dc:subject>
<dc:subject xml:lang="fr">Cartilage</dc:subject>
<dc:subject xml:lang="en">Regenerative medicine</dc:subject>
<dc:subject xml:lang="en">Tissue engineering</dc:subject>
<dc:subject xml:lang="en">Implantable medical devices</dc:subject>
<dc:subject xml:lang="en">Advanced therapy medicinal products</dc:subject>
<dc:subject xml:lang="en">Mesenchymal stem cells</dc:subject>
<dc:subject xml:lang="en">Early-stage osteoarthritis</dc:subject>
<dc:subject xml:lang="en">Cartilage</dc:subject>
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<dcterms:abstract xml:lang="fr">L'arthrose est l'une des premières causes de handicap dans le monde et ne dispose à ce jour d'aucun traitement modificateur de la maladie. Le ciblage des lésions focales du cartilage à un stade réversible représente une voie d'intervention prometteuse en médecine régénérative. Nous avons développé une membrane nano-fibreuse de poly(ε-caprolactone) fonctionnalisée par des glycosaminoglycanes, conçue pour reproduire le microenvironnement natif du cartilage. Le scaffold a démontré une stabilité physicochimique et favorisé le recrutement de chondrocytes en cultures tridimensionnelles de micromasses. Chargée de cellules souches mésenchymateuses (CSM) encapsulées dans un hydrogel, la membrane a dirigé leur différenciation chondrogénique et stimulé le dépôt de matrice extracellulaire, soutenant à la fois la réparation endogène et l'apport cellulaire exogène. Cette membrane fonctionnalisée remplit les critères d'un dispositif médical implantable biomimétique et, associée à un composant cellulaire vivant, répond à la définition d'un médicament de thérapie innovante combiné (MTIc) à visée préventive dans l'arthrose précoce.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Osteoarthritis is a leading cause of disability worldwide, yet no disease-modifying therapy currently exists. Regenerative medicine approaches targeting focal cartilage lesions at a reversible stage represent a promising avenue for intervention. We developed a nanofibrous poly(ε-caprolactone) membrane functionalized with glycosaminoglycans to recapitulate the native cartilage microenvironment. The scaffold exhibited physicochemical stability and promoted chondrocyte recruitment in three-dimensional micromass cultures. When loaded with hydrogel-encapsulated mesenchymal stem cells (MSCs), it directed chondrogenic differentiation and extracellular matrix deposition, supporting both endogenous repair and exogenous cellular contribution. This functionalized membrane fulfils the criteria of a biomimetic implantable medical device and, combined with a viable cellular component, qualifies as a combined advanced therapy medicinal product (cATMP) with preventive potential for early-stage osteoarthritis.</dcterms:abstract>
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