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<dc:title xml:lang="en">Development of new types of mechanocatalytic systems</dc:title>
<dcterms:alternative xml:lang="fr">Développement de nouveaux systèmes enzymatiques mécano-transductifs</dcterms:alternative>
<dc:subject xml:lang="fr">Mécano-transduction</dc:subject>
<dc:subject xml:lang="fr">Conformation</dc:subject>
<dc:subject xml:lang="fr">Étirement</dc:subject>
<dc:subject xml:lang="fr">Catalytique</dc:subject>
<dc:subject xml:lang="fr">Polyélectrolytes</dc:subject>
<dc:subject xml:lang="fr">Poly(etylene glycol)</dc:subject>
<dc:subject xml:lang="fr">Hydrogels</dc:subject>
<dc:subject xml:lang="fr">Nanogels,</dc:subject>
<dc:subject xml:lang="fr">Couche par couche</dc:subject>
<dc:subject xml:lang="en">Mechanotransduction</dc:subject>
<dc:subject xml:lang="en">Conformation</dc:subject>
<dc:subject xml:lang="en">Stretching</dc:subject>
<dc:subject xml:lang="en">Catalytic</dc:subject>
<dc:subject xml:lang="en">Polyelectrolytes</dc:subject>
<dc:subject xml:lang="en">Poly(ethylene glycol)</dc:subject>
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<tef:elementdEntree autoriteExterne="029632986" autoriteSource="Sudoc">Couches de Langmuir-Blodgett</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="032073178" autoriteSource="Sudoc">Polyéthylèneglycol</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="055281389" autoriteSource="Sudoc">Hydrocolloïdes</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="031286607" autoriteSource="Sudoc">Transduction du signal cellulaire</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Le fascinant processus par lequel les signaux mécaniques sont transformés en réactions biochimiques dans la nature est appelé mécano-transduction. Le but de ma thèse a été de mimer la Nature en élaborant de nouveaux systèmes enzymatiques mécano-transductifs, i.e des matériaux capables de moduler une catalyse enzymatique lorsqu’ils sont sollicités mécaniquement. Nous avons d’abord étudié l’effet de l’étirement sur les chaînes constitutives de films multicouches de polyélectrolytes, matrices souvent utilisées pour le développement de biomatériaux intelligents. Dans le cadre d’une nouvelle stratégie axée sur la modulation mécanique de la conformation, nous avons ensuite élaboré des matrices étirables à base de poly(éthylène glycol)s. Nous avons en particulier développé de tout nouveaux revêtements covalents appelés nanogels qui se sont avérés être déposables sur le silicone étirable et fonctionnalisables avec différentes biomacromolécules, ouvrant ainsi de nouvelles routes biomimétiques.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The fascinating process by which mechanical signals are transformed into biochemical reactions in Nature is called mechanotransduction. The goal of my PhD was to mimic Nature by elaborating new types of mechanocatalytic materials, i.e materials able to modulate a catalytic activity when mechanically stimulated. We first aimed at understanding the impact of stretching on the structural properties of polyelectrolyte multilayers films, polymeric matrices often used for the design of smart biomaterials. Within the framework of a new strategy essentially relying on mechanically induced conformational changes, we then developed stretchable polymeric matrices based on poly(ethylene glycol)s. We more particularly designed new types of covalent coatings, called nanogels. We showed that these architectures were buildable on stretchable silicone and that they could be functionalized with different types of biomacromolecules; thus opening new biomimetic routes.</dcterms:abstract>
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