Human embryonic stem cell cultures, and compositions and methods for growing same
First Claim
1. Isolated undifferentiated pluripotential human embryonic stem (hES) cells, wherein the hES cells exhibit dependence on adult human feeder cells, or an hES cell-maintaining product of said adult human feeder cells, for maintenance in culture.
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Accused Products
Abstract
Human pluripotential embryonic stem cell cultures are provided, as are human feeder cells useful for growing the human embryonic stem cells, conditioned medium obtained from cultures of the human feeder cells, and factors derived from the conditioned medium. Also provided are methods of growing human embryonic stem cells in the presence of the human feeder cells, the conditioned medium, the factors derived from the conditioned medium, or a combination thereof. In addition to the human embryonic stem cell cultures grown according to such methods, isolated human embryonic stem cells obtained from such human embryonic stem cell cultures are provided, as are methods of using such isolated cells.
50 Citations
64 Claims
- 1. Isolated undifferentiated pluripotential human embryonic stem (hES) cells, wherein the hES cells exhibit dependence on adult human feeder cells, or an hES cell-maintaining product of said adult human feeder cells, for maintenance in culture.
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10. A culture of undifferentiated pluripotential human embryonic stem (hES) cells, comprising
hES cells, and supportive adult human feeder cells, or an hES cell-maintaining product of said feeder cells.
- 17. A method of obtaining an expanded population of undifferentiated pluripotential human embryonic stem (hES) cells, comprising culturing hES cells, and supportive adult human feeder cells or an hES cell-maintaining product of said feeder cells, under conditions suitable for growth of the hES cells, thereby obtaining an expanded population of the hES cells.
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36. A method for identifying an agent that alters a function of an undifferentiated pluripotential human embryonic stem (hES) cell, comprising:
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a) contacting the hES cells with a test agent, wherein the hES cells exhibit dependence on adult human feeder cells, or an hES cell-maintaining product of said adult human feeder cells, for maintenance in culture; and
b) detecting a change in a function of the hES cells in presence of the test agent as compared to the function in the absence of the test agent, thereby identifying the test agent as an agent that alters the fiction of the hES cells. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method of obtaining a cell culture medium for maintaining undifferentiated pluripotential human embryonic stem (hES) cell in culture, comprising:
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a) culturing adult human cells that can support the growth of hES cells in culture; and
b) isolating conditioned medium generated by culturing the adult human cells, thereby obtaining a cell culture medium for maintaining undifferentiated pluripotential hES cells in culture. - View Dependent Claims (47, 48, 49, 50, 51)
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52. A method for obtaining undifferentiated pluripotential human embryonic stem (ES) cells, comprising:
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a) culturing a suspension of cells comprising undifferentiated pluripotential hES cells, and supportive adult human feeder cells or an hES cell-maintaining product of said feeder cells, under conditions suitable for growth of the hES cells; and
b) isolating cells that express stage-specific surface antigen-4 (SSEA-4), Oct-4, and alkaline phosphatase, and do not express stage-specific surface antigen-1 (SSEA-1), thereby obtaining undifferentiated pluripotential hES cells. - View Dependent Claims (53, 54, 55, 56)
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57. A method of ameliorating a pathologic condition in a subject, comprising administering undifferentiated pluripotential human embryonic stem (hES) cells, or cells derived from said hES cells, to the subject,
wherein the hES cells exhibit dependence on adult human feeder cells, or an hES cell-maintaining product of said adult human feeder cells, for maintenance in culture.
Specification