Differentiation and enrichment of islet-like cells from human pluripotent stem cells
First Claim
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1. A method of enriching the proportion of islet-like cells from a cell population generated by the differentiation of human pluripotent stem cells to islet-like cells, comprising:
- a) differentiating human pluripotent stem cells into a cell population comprising islet-like cells by a method comprising,i. contacting human pluripotent stem cells with a first medium comprising Activin A; and
ii. contacting the cells from step i) with a second medium comprising FGF-2 but lacking Activin A,thereby generating a cell population comprising islet-like cells, wherein the cell population comprises cell clusters that have formed buds; and
b) separating at least some of the buds from at least some of the clusters in the cell population of step (a) into at least two fractions, wherein the fraction containing separated buds contains a higher proportion of insulin or glucagon-producing islet-like cells than the cell population of step (a) and wherein the buds are separated from the clusters based on the size difference between the buds and the clusters.
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Abstract
Methods for differentiating human pluripotent stem cells into islet-like cells are provided. In certain embodiments, the methods utilize sequential culturing of the human pluripotent stem cells with certain factors to produce islet-like cells. In certain embodiments, the population of cells produced by the methods is further enriched for islet-like cells.
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24 Claims
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1. A method of enriching the proportion of islet-like cells from a cell population generated by the differentiation of human pluripotent stem cells to islet-like cells, comprising:
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a) differentiating human pluripotent stem cells into a cell population comprising islet-like cells by a method comprising, i. contacting human pluripotent stem cells with a first medium comprising Activin A; and ii. contacting the cells from step i) with a second medium comprising FGF-2 but lacking Activin A, thereby generating a cell population comprising islet-like cells, wherein the cell population comprises cell clusters that have formed buds; and b) separating at least some of the buds from at least some of the clusters in the cell population of step (a) into at least two fractions, wherein the fraction containing separated buds contains a higher proportion of insulin or glucagon-producing islet-like cells than the cell population of step (a) and wherein the buds are separated from the clusters based on the size difference between the buds and the clusters. - 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)
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Specification