Reduced antigenicity tissue (rat) implants

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/36 (2006.01) A61F 2/28 (2006.01) A61F 2/30 (2006.01) A61F 2/44 (2006.01) A61L 2/00 (2006.01) A61F 2/00 (2006.01) A61F 2/46 (2006.01)

Patent

CA 2379665

The present invention relates to reduced antigenicity tissue (RAT) implants, including bone implant materials comprising reduced antigenicity bone (RAB) and cartilage implant materials comprising reduced antigenicity cartilage (RAC) by virtue of having been treated to remove substantially all non- collagenous proteins from the bone or cartilage implant matrix. In specific applications of the invention the RAB and RAC implants are treated with osteogenic (osteoinductive or osteoconductive) or cartilage growth inducing compositions, including but not limited to bone morphogenic proteins, cartilage derived morphogenic proteins, growth factors, peptides, cells, natural or recombinant, expressing such proteins or growth factors, and expressible nucleic acids encoding such proteins, peptides, growth factors, or combinations thereof.

L'invention concerne des implants tissulaires à antigénicité réduite (RAT), y compris des matières d'implant osseux contenant de l'os à antigénicité réduite (RAB) et des matières d'implant cartilagineux contenant du cartilage à antigénicité réduite (RAC). On obtient une antigénicité réduite en traitant ces matières de façon à éliminer sensiblement toutes les protéines non collagènes de la matrice d'implant osseux ou cartilagineux. Dans des applications spécifiques de l'invention, les implants RAB et RAC sont traités à l'aide de compositions ostéogènes (ostéo-inductives ou ostéoconductives) ou provoquant une croissance de cartilage, qui comprennent notamment, mais pas exclusivement, des protéines morphogénétiques, des protéines morphogénétiques dérivées de cartilage, des facteurs de croissance, des peptides, des cellules naturelles ou recombinées exprimant ces protéines ou facteurs de croissance, et des acides nucléiques pouvant être exprimés qui codent pour ces protéines, peptides et facteurs de croissance, ou des combinaisons de ceux-ci.

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