Quantity and proliferation rate of mesenchymal stem cells in human cord blood during gestation

Lan-Lan Ma, Fan-Biao Meng, Ping Shi, Gang Li, Xi-Ning Pang
Cell Biology International 2012 April 1, 36 (4): 415-8
UCB (umbilical cord blood) as a resource of MSCs (mesenchymal stem cells) is widely accepted, but the quantity and characteristics of UCB-MSCs from different gestational ages have not been well studied. We have quantified the number of MSCs in UCB at different gestational ages using a multi-colour flowcytometer and compared the cell proliferation rates of these UCB-MSCs. Defining MSCs as CD44+/CD105+/CD34-/CD45 population, their numbers declined in the UCB at the gestational age. Proliferation rates were significantly higher in UCB before term than at full term. Non-full term UCB samples may be a better source of MSCs.

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