Methods of deriving definitive endoderm cells from pluripotent parthenogenetic stem cells
First Claim
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1. A method of producing definitive endoderm cells comprising:
- a) culturing pluripotent parthenogenetic stem cells lacking paternal imprinting in the presence of trichostatin A (TSA) with the proviso that Activin A is not present, wherein the TSA alters the epigenetic status of the cell; and
b) thereafter, culturing the parthenogenetic stem cells in the absence of the TSA and in the presence of Activin A, thereby producing definitive endoderm cells.
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Abstract
The present invention provides a method of generating definitive endoderm, mesoderm, or ectoderm cells. The method includes culturing embryonic stem cells, parthenogenetic cells, or induced pluripotent stem cells in the presence of a demethylation agent, a histone deacetylase inhibitor, or a combination thereof, and thereafter, culturing the stem cells in the absence of the agent or combination of agents, to produce definitive endoderm cells, mesoderm, or ectoderm cells.
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11 Claims
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1. A method of producing definitive endoderm cells comprising:
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a) culturing pluripotent parthenogenetic stem cells lacking paternal imprinting in the presence of trichostatin A (TSA) with the proviso that Activin A is not present, wherein the TSA alters the epigenetic status of the cell; and b) thereafter, culturing the parthenogenetic stem cells in the absence of the TSA and in the presence of Activin A, thereby producing definitive endoderm cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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