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<dc:title xml:lang="en">Soft hybrid materials for cell growth and proliferation</dc:title>
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<dcterms:abstract xml:lang="fr">Le travail de recherche consiste à développer des hydrogels pour la prolifération et la migration cellulaires in vitro et in vivo en trois dimensions (3D). Des hydrogels à base de polyamidoamines avec d'intéressantes propriétés physicochimiques et une remarquable biocompatibilité ont été développés pour différentes applications biomédicales. Un hydrogel avec des sondes luminescentes d’iridium(III) incorporés de manière covalente, a été conçue comme plate-forme 3D de culture cellulaire, pour la visualisation directe des cellules vivantes en temps réel, et a démontré être un puissant outil de bioimagerie in vitro. En outre, un hydrogel nanocomposite, capable d'induire la chimiotaxie des cellules souches, a été développé et testé in vivo, en confirmant son potentiel en tant qu’implant pour l’ingénierie tissulaire. Finalement, un hydrogel injectable et biodégradable a été réalisé comme un nouvel agent pour la dissection sous-muqueuse endoscopique des lésions néoplasiques digestives.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The research work focuses on the development of hydrogels to investigate three-dimensional (3D) cell proliferation and migration in vitro and in vivo. Polyamidoamines-based hydrogels with interesting physicochemical properties and high biocompatibility have been developed for different biomedical applications. An hydrogel with covalently incorporated iridium(III) fluorescent probes, has been conceived as a 3D cell culture platform for the direct visualization of living cells in real-time, demonstrating to be a powerful tool for in vitro bio-imaging. Moreover, a nanocomposite hydrogel, able to induce chemotaxis of stem cells, was developed andtested in vivo, confirming its potential as a tissue engineering implant. Finally, an injectable biodegradable nanocomposite hydrogel was realized as a novel agent for endoscopic submucosal dissection of large neoplastic lesions of the gastro-intestinal tract.</dcterms:abstract>
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