Efficient culture of stem cells for the production of hemoglobin
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United States of America Patent
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Mar 26, 2002
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Jun 25, 1999
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Jun 25, 1998
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Abstract
The present invention describes a serum-free medium that promotes the growth and differentiation of erythroid cells, cells that are highly transducible by a non-viral method and genes which increase the growth of erythroid cells and decrease their dependency on Epo. This invention can be used in the expansion of hematopoietic stem cells to produce cultures of erythroid cells as a source of erythroid-specific proteins such as hemoglobin. Hematopoietic stem cells are cultured ex vivo in a serum-free culture medium with the addition of IL-3, SCF and EPO. Cells transfected with the gene described in the present invention can be cultured in the serum-free culture medium with decreased dependency on Epo and other cytokines, thereby reducing the cost of the production of hemoglobin.
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