Method for differentiating mesenchymal stem cell into...

C - Chemistry – Metallurgy – 12 – N

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C12N 5/10 (2006.01) A61K 35/28 (2006.01) A61K 35/407 (2006.01) A61P 1/16 (2006.01) A61P 43/00 (2006.01) C12N 15/54 (2006.01)

Patent

CA 2536934

A liver cell can be hardly established. Therefore, it is intended to provide a means of preparing a liver cell useful in the liver cell transplantation therapy for liver injury which comprises differentiating a mesenchymal stem cell (in particular, a stroma cell, i.e., a bone marrow-origin mesenchymal stem cell) the growth method for which has been already established into a liver cell. It is found out that, by transplanting human mesenchymal stem cells into a mammal suffering from chronic liver injury induced by continuous chemical administration (for example, rat liver), the human mesenchymal stem cells can be differentiated into liver cells or matured liver cells. Thus, a means of differentiating a mesenchymal stem cell into a matured liver cell has been developed.

L'invention a trait à la formation d'une cellule hépatique, et concerne un procédé de préparation d'une cellule hépatique destinée à traiter un foie lésé au moyen d'une greffe de cellules hépatiques. Le procédé comporte les étapes consistant à différencier une cellule souche mésenchymateuse (en particulier une cellule de stroma, c.-à-d. une cellule souche mésenchymateuse issue de la moelle osseuse), et à la mettre en culture pour former une cellule hépatique. Il a été découvert que la greffe de cellules souches mésenchymateuses humaines sur un mammifère atteint d'une lésion chronique du foie induite par l'administration continue d'un produit chimique (par exemple, foie de rat), permet de différencier lesdites cellules en cellules hépatiques ou en cellules hépatiques mûres. L'invention concerne par conséquent un procédé mis au point qui permet de différencier une cellule souche mésenchymateuse en une cellule hépatique mûre.

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