Methods to accelerate the isolation of novel cell strains from pluripotent stem cells and cells obtained thereby
First Claim
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1. A method for deriving cells from pluripotent stem cells wherein said derived cells possess reduced differentiation potential than said pluripotent stem cells, comprising the steps of:
- (a) selecting all or a subset of differentiation conditions from a plurality of differentiation conditions that may result in the differentiation of said pluripotent stem cells;
(b) exposing said pluripotent stem cells to said selected all or a subset of differentiation conditions from step (a) for various time periods resulting in a heterogeneous population of cells comprising cells with reduced differentiation potential than said pluripotent stem cells;
(c) plating said heterogeneous population of cells to isolate a number of individual cultures of cells or a number of individual cultures of cells that are oligoclonal, wherein one or more of said cultures comprise cells with reduced differentiation potential than said pluripotent stem cells and wherein each of said individual cultures having only one cell may be propagated into a pure clonal culture of cells and wherein each of said individual cultures of cells having cells that are oligoclonal may be propagated into a larger number of cells; and
(d) propagating one or more (or all) of said individual cultures of cells in conditions selected to promote the propagation of said one or more (or all) of said individual cultures of cells.
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Abstract
This invention generally relates to methods to differentiate pluripotent stem cells, such as embryonic stem, embryonic germ, or embryo-derived cells, to obtain subpopulations of cells from heterogeneous mixtures of cells wherein the subpopulation of cells possess reduced differentiation potential compared to the original pluripotent stem cells and where the subpopulation is capable of being propagated.
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56 Claims
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1. A method for deriving cells from pluripotent stem cells wherein said derived cells possess reduced differentiation potential than said pluripotent stem cells, comprising the steps of:
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(a) selecting all or a subset of differentiation conditions from a plurality of differentiation conditions that may result in the differentiation of said pluripotent stem cells;
(b) exposing said pluripotent stem cells to said selected all or a subset of differentiation conditions from step (a) for various time periods resulting in a heterogeneous population of cells comprising cells with reduced differentiation potential than said pluripotent stem cells;
(c) plating said heterogeneous population of cells to isolate a number of individual cultures of cells or a number of individual cultures of cells that are oligoclonal, wherein one or more of said cultures comprise cells with reduced differentiation potential than said pluripotent stem cells and wherein each of said individual cultures having only one cell may be propagated into a pure clonal culture of cells and wherein each of said individual cultures of cells having cells that are oligoclonal may be propagated into a larger number of cells; and
(d) propagating one or more (or all) of said individual cultures of cells in conditions selected to promote the propagation of said one or more (or all) of said individual cultures of cells. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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2. A method for deriving cells from embryoid bodies derived from pluripotent stem cells wherein said derived cells possess reduced differentiation potential than said embryoid bodies derived from pluripotent stem cells, comprising the steps of:
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(a) selecting all or a subset of differentiation conditions from a plurality of differentiation conditions that may result in the differentiation of said embryoid bodies derived from pluripotent stem cells;
(b) exposing said embryoid bodies derived from pluripotent stem cells to said selected all or a subset of differentiation conditions from step (a) for various time periods resulting in a heterogeneous population of cells comprising cells with reduced differentiation potential than said pluripotent stem cells;
(c) plating said heterogeneous population of cells to isolate a number of individual cultures of cells, each culture having only one cell or cells that are oligoclonal, wherein one or more of said cultures comprise cells with reduced differentiation potential than said pluripotent stem cells and wherein each of said individual cultures having only one cell may be propagated into a pure clonal culture of cells and wherein each of said individual cultures of cells that are oligoclonal may be propagated into a larger number of cells; and
(d) propagating one or more (or all) of said individual cultures of cells in conditions selected to promote the propagation of said one or more (or all) of said individual cultures of cells.
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3. A method for deriving cells from pluripotent stem cells, wherein said derived cells possess reduced differentiation potential than said pluripotent stem cells, comprising the steps of:
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(a) exposing said pluripotent stem cells in various differentiation conditions for various time periods resulting in a heterogeneous population of cells comprising cells with reduced differentiation potential than said pluripotent stem cells;
(b) plating said heterogeneous population of cells to isolate a number of individual cultures of cells or a number of individual cultures of cells that are oligoclonal, wherein one or more of said cultures comprise cells with reduced differentiation potential than said pluripotent stem cells and wherein each of said individual cultures having only one cell may be propagated into a pure clonal culture of cells and wherein each of said individual cultures of cells having cells that oligoclonal may be propagated into a larger number of cells; and
(c) propagating one or more (or all) of said individual cultures of cells in conditions selected to promote the propagation of said one or more (or all) of said individual cultures of cells.
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4. A method for deriving cells from embryoid bodies derived from pluripotent stem cells, wherein said derived cells possess reduced differentiation potential than said pluripotent stem cells, comprising the steps of:
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(a) exposing said embryoid bodies derived from pluripotent stem cells in various differentiation conditions for various time periods resulting in a heterogeneous population of cells comprising cells with reduced differentiation potential than said pluripotent stem cells;
(b) plating said heterogeneous population of cells to isolate a number of individual cultures of cells, each culture having only one cell or an oligoclonal number of cells, wherein one or more of said cultures comprise cells with reduced differentiation potential than said pluripotent stem cells and wherein each of said individual cultures having only one cell may be propagated into a pure clonal culture of cells and wherein each of said individual cultures of cells that are oligoclonal may be propagated into a larger number of cells; and
(c) propagating one or more (or all) of said individual cultures of cells in conditions selected to promote the propagation of said one or more (or all) of said individual cultures of cells.
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Specification