Hydroxyphenyl cross-linked macromolecular network and...

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 89/00 (2006.01) C08G 63/48 (2006.01) C08G 63/91 (2006.01)

Patent

CA 2572804

A dihydroxyphenyl cross-linked macromolecular network is provided that is useful in artificial tissue and tissue engineering applications, particularly to provide a synthetic, implantable tissue matrix material for a wide variety of tissue types. In particular, artificial or synthetic cartilage, vocal cord material, vitreous material, soft tissue material and mitral valve material are described. In an embodiment, the network is composed of tyramine- substituted and cross-linked hyaluronan molecules, wherein cross-linking is achieved via peroxidase-mediated dityramine-linkages that can be performed in vivo. The dityramine bonds provide a stable, coherent hyaluronan-based hydrogel with desired physical properties.

L'invention concerne un réseau macromoléculaire réticulé de dihydroxyphényle, utile dans des applications de tissu artificiel et de manipulation de tissu, plus spécifiquement pour obtenir un matériau matriciel de tissu pouvant être implanté synthétique pour une grande variété de types de tissus. En particulier, l'invention concerne du cartilage artificiel ou synthétique, du matériau de cordes vocales, du matériau vitreux, du matériau de tissus souples et du matériau de valvule mitrale. Dans un mode de réalisation de cette invention, le réseau est composé de molécules d'hyaluronane réticulées et à substitution de tyramine, la réticulation étant obtenue par des liaisons de dityramine à médiation par peroxydase pouvant être effectuées "in vivo". Ces liaisons de dityramine permettent d'obtenir un hydrogel cohérent stable, à base d'hyaluronane, avec des caractéristiques physiques voulues.

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