Methods and compositions to promote bone homeostasis

G - Physics – 01 – N

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G01N 33/68 (2006.01) G01N 33/74 (2006.01)

Patent

CA 2570496

Methods are disclosed for identifying osteogenic promoting compounds by contacting test compounds with a target gene polypeptide or fragment thereof, which target gene is identified as involved in the osteogenesis process, and measuring a compound~ polypeptide osteogenesis property. Also disclosed are methods of promoting osteogenesis by contacting progenitor cells with an effective osteogenic stimulating amount of an agonist of a target gene or an expressible nucleic acid of SEQ ID NO. 1-18, and may be used for the treatment or prevention of an imbalance in bone homeostasis. A further aspect is a method to produce bone tissue in vitro, by contacting a target gene agonist or an expressible nucleic acid of SEQ ID NO. 1-18 with a vertebrate cell population including osteoblast progenitor cells on a substrate.

L'invention concerne des procédés pour identifier des composés qui favorisent l'ostéogenèse, consistant à mettre des composés d'essai en contact avec un polypeptide ou un fragment d'un gène cible identifié comme étant impliqué dans le processus de l'ostéogenèse, et à mesurer une propriété d'ostéogenèse composé-polypeptide. Cette invention concerne également des procédés pour favoriser l'ostéogenèse, qui consistent à mettre des cellules souches en contact avec une quantité efficace, stimulant l'ostéogenèse, d'un agoniste d'une cellule cible ou d'un acide nucléique exprimable de SEQ ID NO. 1-18, ces procédés pouvant être utilisés pour traiter ou prévenir un déséquilibre de l'homéostasie osseuse. La présente invention se rapporte en outre à un procédé de production de tissu osseux in vitro, consistant à mettre un agoniste de gène cible ou un acide nucléique exprimable de SEQ ID NO. 1-18 en contact avec une population de cellules de vertébré comprenant des cellules souches d'ostéoblates sur un substrat.

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