Osteopontin-coated surfaces and methods of use

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/47 (2006.01) A61C 8/00 (2006.01) A61K 38/19 (2006.01) A61L 27/22 (2006.01) A61L 27/34 (2006.01) C07K 14/46 (2006.01) C07K 16/24 (2006.01)

Patent

CA 2425662

An osteopontin containing implant which increases the rate of osseointegration and the percentage of bone apposition is described. In one embodiment, the implant includes osteopontin or an active fragment thereof or an active peptide derived thereform. In another embodiment, the implant includes a material suitable for use in vivo within a subject in combination with a releasable form of osteopontin forming an osteopontin containing implant. The disclosed osteopontin derived peptides bind to various cell types and play important roles in cellular differentiation and/or motility. Many of these interactions are mediated by integrins as disclosed. Antibodies provide a mechanism to abolish or attenuate the activities of the claimed peptides.

L'invention concerne un implant comprenant de l'ostéopontine qui augmente la vitesse d'osséointégration et le pourcentage d'apposition osseuse. Dans un mode de réalisation, l'implant comprend de l'ostéopontine ou un fragment actif de celle-ci ou encore un peptide actif dérivé de celle-ci. Dans un autre mode de réalisation, l'implant comprend une substance conçue pour être utilisée <i>in vivo</i> chez un sujet, conjointement avec une forme à libération d'ostéopontine formant un implant comprenant de l'ostéopontine. Les peptides dérivés de l'ostéopontine selon l'invention se lient à différents types de cellules et jouent un rôle important dans la différentiation et/ou mobilité cellulaire. Plusieurs de ces interactions sont induites par des intégrines selon l'invention. Des anticorps mettent en place un mécanisme permettant d'éliminer ou d'atténuer les activités des peptides selon l'invention.

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