Compositions for the in vitro derivation and culture of embryonic stem (ES) cell lines with germline transmission capability and for the culture of adult stem cells
First Claim
1. A method of establishing pluripotent embryonic stem cells from mouse blastocysts, or of maintaining or growing established pluripotent embryonic stem cells from a mouse blastocyst for at least 10 passages as undifferentiated cells, or of maintaining or growing human umbilical cord blood (UCB) CD 34+ cells, said method comprising the step of cultivating said stem cells or precursor cells for at least one passage in basal embryonic stem cell medium preconditioned by the rabbit fibroblast cell line Rab9 (ATCC catalogue CRL1414) and containing less than 0.1 ng/ml Leukemia Inhibitory Factor (LIF).
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Abstract
The present invention is directed to a method of deriving pluripotent embryonic stem cells from mouse blastocysts or from primordial germ cells from a post-implantation mouse embryo, or of maintaining or growing pluripotent embryonic stem cells from a mouse, or of expanding human hematopoietic stem cells or human hematopoietic precursor cells. The methods include the step of cultivating the stem cells or precursor cells for at least one passage in a culture medium preconditioned by the rabbit fibroblast cell line Rab9 (ATCC catalogue CRL1414) and containing less than 0.1 ng/ml Leukemia Inhibitory Factor (LIF).
12 Citations
12 Claims
- 1. A method of establishing pluripotent embryonic stem cells from mouse blastocysts, or of maintaining or growing established pluripotent embryonic stem cells from a mouse blastocyst for at least 10 passages as undifferentiated cells, or of maintaining or growing human umbilical cord blood (UCB) CD 34+ cells, said method comprising the step of cultivating said stem cells or precursor cells for at least one passage in basal embryonic stem cell medium preconditioned by the rabbit fibroblast cell line Rab9 (ATCC catalogue CRL1414) and containing less than 0.1 ng/ml Leukemia Inhibitory Factor (LIF).
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11. A method for deriving and culturing pluripotent murine embryonic stem cells, said method comprising the steps of:
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i) isolating inner mass cells from murine blastocyst stage embryos ii) culturing inner mass cells isolated from the blastocysts iii) passaging the inner mass cells periodically wherein said culturing and passaging is in a composition comprising basal embryonic stem cell medium preconditioned by the rabbit fibroblast cell line Rab9 (ATCC catalogue CRL1414) and containing less than 0.1 ng/ml Leukemia Inhibitory Factor (LIF). - View Dependent Claims (12)
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Specification