Hematopoietic reconstitution of CD34+ cells grown in static and stirred culture systems in NOD/SCID mice.

The hematopoietic reconstitution of cord blood (CB) CD34(+)cells grown in static and stirred system was studied. Static cultures were better than stirred cultures for cell expansion. Engraftment of stirred-culture hematopoietic stem cells (HSCs) was higher than static-culture HSCs. Stirred-culture HSCs had better multilineage reconstitution ability and colony-forming ability than static-culture HSCs. Static cultures thus favor the expansion of HSCs and stirred cultures are more effective in preserving functional HSCs.