Culture media, cell cultures and methods of culturing pluripotent stem cells in an undifferentiated state
First Claim
1. A culture medium being serum-free and devoid of non-human contaminants comprising ascorbic acid at a concentration range of about 400-600 μ
- g/ml, basic fibroblast growth factor (bFGF) at a concentration range of about 50-200 ng/ml, serum replacement and a lipid mixture, wherein the culture medium is capable of maintaining pluripotent stem cells in an undifferentiated state and with a stable karyotype for at least 40 passages in the absence of feeder cell support.
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Abstract
Provided are serum-free culture media which comprise basic fibroblast growth factor (bFGF), transforming growth factor beta-3, ascorbic acid, xeno-free serum replacement and a lipid mixture. The media may also comprise an IL6R/IL6 chimera, or leukemia inhibitory factor (LIF); wherein the culture medium is capable of maintaining pluripotent stem cells in an undifferentiated state in the absence of feeder cell support. Also provided are cell cultures comprising pluripotent stem cells such as human embryonic stem cells and induced pluripotent stem (iPS) cells, and methods of using the same for expanding pluripotent stem cells in an undifferentiated state using two-dimensional or three-dimensional culture systems. Methods of expanding iPS cells in a suspension culture devoid of substrate adherence and cell encapsulation are also provided.
134 Citations
10 Claims
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1. A culture medium being serum-free and devoid of non-human contaminants comprising ascorbic acid at a concentration range of about 400-600 μ
- g/ml, basic fibroblast growth factor (bFGF) at a concentration range of about 50-200 ng/ml, serum replacement and a lipid mixture, wherein the culture medium is capable of maintaining pluripotent stem cells in an undifferentiated state and with a stable karyotype for at least 40 passages in the absence of feeder cell support.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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9. A culture medium being serum-free, devoid of non-human contaminants and devoid of TGFβ
- 1, comprising ascorbic acid at a concentration range of about 400-600 μ
g/ml, basic fibroblast growth factor (bFGF) at a concentration range of about 50-200 ng/ml, serum replacement and a lipid mixture, wherein the culture medium is capable of maintaining pluripotent stem cells in an undifferentiated state and with a stable karyotype for at least 40 passages in the absence of feeder cell support.
- 1, comprising ascorbic acid at a concentration range of about 400-600 μ
Specification