Method for isolating and culturing adult stem cells derived...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/074 (2010.01) C12N 5/071 (2010.01) A61K 35/12 (2006.01) A61K 35/50 (2006.01)

Patent

CA 2692634

The present invention relates to a method for isolating and culturing adult stem cells derived from human amniotic membrane in high yield, and more particularly to a method for obtaining a large amount of adult stem cells, the method comprising obtaining amniotic epithelial cells from human amniotic tissue in high yield by treatment with dithiothreitol (DTT) and a low concentration of trypsin and culturing the amniotic epithelial cells in a medium containing a Rho-associated kinase inhibitor. The human amniotic epithelial cell-derived stem cells are easily extracted compared to existing therapeutic stem cells such as umbilical cord blood stem cells and bone marrow stem cells, the yield and proliferation thereof are significantly increased by DTT treatment, the addition of the ROCK inhibitor or the replacement of medium. Thus, the method can be used to efficiently prepare adult stem cells.

La présente invention concerne un procédé d'isolement et de culture de cellules souches adultes issues de membrane amniotique humaine avec un rendement élevé. L'invention concerne plus particulièrement un procédé permettant d'obtenir une grande quantité de cellules souches adultes, ledit procédé consistant à obtenir des cellules épithéliales amniotiques à partir de tissu amniotique humain avec un rendement élevé par traitement avec du dithiothréitol (DTT) et une faible concentration de trypsine, et à cultiver les cellules épithéliales amniotiques dans un milieu contenant un inhibiteur de la kinase associée à Rho. Les cellules souches issues des cellules épithéliales amniotiques humaines sont facilement extraites par rapport aux cellules souches thérapeutiques actuelles telles que les cellules souches sanguines issues de cordon ombilical et les cellules souches de moelle osseuse, et leur rendement d'obtention et leur prolifération sont significativement accrus par le traitement au DTT, l'addition de l'inhibiteur de la ROCK ou le remplacement du milieu. Ainsi, le procédé de l'invention peut être utilisé pour préparer efficacement des cellules souches adultes.

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