Bioengineered anterior cruciate ligament

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/38 (2006.01) A61F 2/08 (2006.01)

Patent

CA 2371025

The present invention provides a method for producing an anterior cruciate ligament ex vivo. The method comprises seeding pluripotent stem cells in a three-dimensional matrix, anchoring the seeded matrix by attachment to two anchors, culturing the cells within the matrix under conditions appropriate for cell growth, and regeneration, while subjecting the matrix to one or more mechanical forces via movement of one or both of the attached anchors. Bone marrow stromal cells are preferably used as the pluripotent cells in the method. Suitable matrix materials are materials to which cells can adhere, such as a gel made from collagen type I. Suitable anchor materials are materials to which the matrix can attach, such as Goinopra coral, and also demineralized bone.

La présente invention concerne un procédé de production ex vivo d'un ligament croisé antérieur. Le procédé consiste à ensemencer des cellules souches multipotentes dans une matrice tridimensionnelle, à ancrer la matrice ensemencée en la fixant à deux pièces d'ancrage, à cultiver les cellules à l'intérieur de la matrice dans des conditions propres à favoriser la croissance cellulaire et la régénération pendant que la matrice est soumise à des forces mécaniques par le mouvement d'une ou des deux pièces d'ancrage. Les cellules du stroma de la moelle osseuse sont utilisées de préférence comme cellules multipotentes dans le procédé de l'invention. Des matériels matriciels appropriés sont des matériels auxquels les cellules peuvent adhérer, tels qu'un gel obtenu à partir de collagène du type I. Des matériels d'ancrage appropriés sont des matériels auxquels la matrice peut se fixer, tels que le corail Goinopra ou encore un os déminéralisé.

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