Method for inducing differentiation of pluripotent stem...

C - Chemistry – Metallurgy – 12 – N

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C12N 5/00 (2006.01) C12N 5/0735 (2010.01)

Patent

CA 2650685

The object is to provide a method for differentiation induction of a myocardial cell from a stem cell in a selective manner with high efficiency. Disclosed is a method for differentiation induction of a myocardial cell from a pluripotent stem cell, comprising the following steps (i) and (ii): (i) culturing the pluripotent stem cell in a culture medium containing no substance capable of promoting the activation of the canonical Wnt signaling pathway, wherein the culturing is started at the point of time at which the differentiation induction is initiated and is ended 24 hours before the expression of canonical Wnt gene starts to increase; and (ii) culturing the pluripotent stem cell in a culture medium containing a substance capable of promoting the activation of the canonical Wnt signaling pathway, wherein the culturing is started 24 to 0 hour before the expression of the canonical Wnt gene starts to increase and is continued for 24 to 96 hours.

L'objet de la présente invention est de proposer un procédé pour l'induction de la différenciation de cellules du myocarde à partir de cellules souches de façon sélective avec une haute efficacité. Il est décrit un procédé pour l'induction de la différenciation d'une cellule du myocarde à partir d'une cellule souche pluripotente, comprenant les étapes (i) et (ii) consistant à : (i) faire la culture de cellules souches pluripotentes dans un milieu de culture ne contenant aucune substance capable de favoriser l'activation de la voie de signalisation Wnt canonique, dans lequel la culture commence au moment où l'induction de la différenciation est lancée et se termine 24 heures avant le début de l'augmentation de l'expression du gène Wnt canonique ; et (ii) faire la culture de cellules souches pluripotentes dans un milieu de culture contenant une substance capable de favoriser l'activation de la voie de signalisation Wnt canonique, dans lequel la culture commence 24 heures à 0 heure avant le début de l'augmentation de l'expression du gène Wnt canonique et se poursuit pendant 24 à 96 heures.

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