Selective expansion of target cell populations
First Claim
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1. A method of selective expansion of a target population of cells, said method comprising:
- (a) introducing a starting sample of cells, containing cells of the target population or a progenitor to the target population, into a growth medium;
(b) causing cells of the target cell population to divide, the cell division resulting in a relative increase in the number of the target cells; and
(c) concurrently with, intermittently during or following step (b), contacting the cells with a selection element, comprising a plurality of selective binding molecules with specific affinity either for target cells or for a first population of non-target cells, so as to select cells of the target population; and
(d) following selection step (c), causing cells of the target population to divide;
wherein during the division of step (d), there is at least a one day period during which the cell division of step (d) results in a relative increase in tile number of target cells that is at least as great as the relative increase during the division of step (b).
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Abstract
Methods and systems are provided for the selective expansion of target cell populations, and methods of treating patients with cell populations and products.
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Citations
25 Claims
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1. A method of selective expansion of a target population of cells, said method comprising:
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(a) introducing a starting sample of cells, containing cells of the target population or a progenitor to the target population, into a growth medium;
(b) causing cells of the target cell population to divide, the cell division resulting in a relative increase in the number of the target cells; and
(c) concurrently with, intermittently during or following step (b), contacting the cells with a selection element, comprising a plurality of selective binding molecules with specific affinity either for target cells or for a first population of non-target cells, so as to select cells of the target population; and
(d) following selection step (c), causing cells of the target population to divide;
wherein during the division of step (d), there is at least a one day period during which the cell division of step (d) results in a relative increase in tile number of target cells that is at least as great as the relative increase during the division of step (b). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification