METHOD FOR CULTURING STEM CELLS
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United States of America Patent
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Jan 31, 2008
app pub date -
Jun 20, 2007
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Jun 20, 2006
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Abstract
A three-dimensional microwell system that supports long term embryonic stem cell (ESCs) culture and formation of homogeneous embryoid bodies (EBs) is described. Microwell-cultured ESCs remain viable and undifferentiated for several weeks in culture and maintain undifferentiated replication when passaged to Matrigel.RTM.-coated, tissue culture-treated polystyrene dishes. Microwell-cultured ESCs maintain pluripotency, differentiating to each of the three embryonic germ layers. ESC aggregates released from microwells can be passaged for undifferentiated replication or differentiated to monodisperse EBs. The ability to constrain ESC growth in three dimensions advantageously provides for more efficient, reproducible culture of undifferentiated cells, high-throughput screening, and the ability to direct ESC differentiation by generating monodisperse EBs of a desired size and shape.
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