Compound screening using chondrocytes derived from primate pluripotent stem cells
First Claim
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1. A method of screening a compound for an effect on cultured chondrocytes, comprising:
- a) providing primate pluripotent stem cells which express SSEA3, SSEA4, Tra-1-60 and Tra-1-81;
b) culturing the primate pluripotent stem cells which express SSEA3, SSEA4, Tra-1-60 and Tra-1-81 in a medium comprising one or more of transforming growth factor (TGF), fibroblast growth factor (FGF), growth differentiation factor (GDF), bone morphogenic protein (BMP), hedgehog protein, L-ascorbic acid and para-thyroid hormone related protein to produce cultured chondrocytes;
c) contacting the cultured chondrocytes with the compound; and
d) observing a change in the cultured chondrocytes.
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Abstract
This invention provides a system for obtaining cells of the chondrocyte lineage by differentiating primate pluripotent stem cells. The process involves culturing the cells as a micromass or other aggregate form in a cocktail of differentiation agents that facilitates outgrowth of the desired cell type. Progeny are capable of synthesizing Type II collagen or aggrecan, or other products that are characteristic of the chondrocyte lineage. Chondrocytes and chondrocyte precursor cells obtained according to this disclosure are suitable for use in both research and clinical therapy.
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Citations
22 Claims
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1. A method of screening a compound for an effect on cultured chondrocytes, comprising:
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a) providing primate pluripotent stem cells which express SSEA3, SSEA4, Tra-1-60 and Tra-1-81; b) culturing the primate pluripotent stem cells which express SSEA3, SSEA4, Tra-1-60 and Tra-1-81 in a medium comprising one or more of transforming growth factor (TGF), fibroblast growth factor (FGF), growth differentiation factor (GDF), bone morphogenic protein (BMP), hedgehog protein, L-ascorbic acid and para-thyroid hormone related protein to produce cultured chondrocytes; c) contacting the cultured chondrocytes with the compound; and d) observing a change in the cultured chondrocytes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of screening a compound for an effect on cultured cells expressing collagen type II and/or aggrecan chondrocytes, comprising:
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a) providing primate pluripotent stem cells which express SSEA3, SSEA4, Tra-1-60 and Tra-1-81; b) culturing the primate pluripotent stem cells which express SSEA3, SSEA4,Tra-1-60 and Tra-1-81 in a medium comprising one or more of transforming growth factor (TGF), fibroblast growth factor (FGF), growth differentiation factor (GDF), bone morphogenic protein (BMP), hedgehog protein, L-ascorbic acid and para-thyroid hormone related protein to produce cultured cells expressing collagen type II and/or aggrecan; c) contacting the cultured cells expressing collagen type II and/or aggrecan with the compound; and d) observing a change in the cultured cells expressing collagen type II and/or aggrecan. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification