A method for osteogenic differentiation of bone marrow stem...

C - Chemistry – Metallurgy – 12 – N

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C12N 5/077 (2010.01) C12N 5/071 (2010.01) A61K 35/28 (2006.01) A61K 35/32 (2006.01) A61P 19/08 (2006.01) C12N 5/08 (2006.01)

Patent

CA 2640794

The invention provides a method for obtaining osteoprogenitors, osteoblasts or osteoblast phenotype cells, as well as cell populations comprising such, from human bone marrow stem cells in vitro or ex vivo, comprising contacting the bone marrow stem cells with human serum or plasma and a growth factor or a biologically active variant or derivative thereof. In addition, the invention provides novel osteoprogenitor or osteoblast phenotype cell types and cell populations comprising such, wherein such cell populations may comprise further cell types, such as preferably endothelial cells or progenitors. In related aspects, the invention provides uses, in particular in the field of therapy, preferably bone therapy, of the above methods, cells and cell populations obtainable using the methods, and of the cell types and cell populations specifically described herein.

La présente invention concerne un procédé permettant d'obtenir des cellules ostéoprogénitrices, des ostéoblastes ou des cellules de phénotype ostéoblaste, ainsi que des populations cellulaires comprenant de telles cellules provenant de cellules souches de la moelle osseuse humaine in vitro ou ex vivo. Le procédé consiste à mettre en contact les cellules souches de la moelle osseuse avec du sérum ou du plasma humain et un facteur de croissance ou un de ses variants ou dérivés biologiquement actif. En outre, l'invention permet d'obtenir de nouvelles cellules de phénotype ostéoprogéniteur ou ostéoblaste et des populations cellulaires comprenant de telles cellules, ces populations cellulaires pouvant également contenir d'autres types de cellules telles que des cellules endothéliales ou progénitrices idéalement. Dans d'autres modes de réalisation, l'invention concerne l'utilisation du procédé susmentionné en particulier dans le domaine de la thérapie, de préférence de la thérapie osseuse, des cellules et des populations cellulaires pouvant s'obtenir à l'aide de ce procédé, et des types cellulaires et des populations cellulaires spécifiquement mentionnés.

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