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Passage History
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These cells are provided to be used as feeder cells to support the growth of stem cells in the undifferentiated state. They have been irradiated with 6,000 rads and will not replicate. The cells will begin to deteriorate in 2 to 3 weeks after plating. Once the feeder cells have attached, the culture medium can be changed to accommodate the cells to be supported. It is recommended that the feeder cells be plated 24 hours before use at 5 to 6 X 10(6)/T75 in order to obtain a 100% confluent monolayer for stem cells growth.
It is not recommended to use them past passage no. 50 (P50).
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References
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Amit M, et al. Human feeder layers for human embryonic stem cells. Biol. Reprod. 68: 2150-2156, 2003. PubMed: 12606388
Hovatta O, et al. A culture system using human foreskin fibroblasts as feeder cells allows production of human embryonic stem cells. Hum. Reprod. 18: 1404-1408, 2003. PubMed: 12832363
Andrews P, et al. Human embryonic fibroblast feeder cells. International Patent Application WO 03/078611 A1
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