Cytokine stimulation of human fetal hematopoietic cells.
The effects of interleukins 3 and 6, stem cell factor, and granulocyte-macrophage colony-stimulating factor on human fetal hematopoietic, bone marrow, and cord blood cells were studied on the basis of the colony-forming capacity. Fetal hematopoietic cells from 28 elective abortions, three bone marrow samples, and three cord blond samples were incubated with cytokines and investigated for the presence of BFU-E (burst-forming units--erythroid), CFU-GM (colony-forming units--granulocytes, macrophages), and CFU-GEMM (colony-forming units--granulocytes, erythrocytes, macrophages, megakaryocytes). Single and combined cytokines and preincubation versus adding cytokines in culture were investigated. Interleukin-6 alone had the most pronounced effect on BFU-E formation. All four cytokines in combination yielded the highest scores for CFU-GM (p < 0.05) and CFU-GEMM (p < 0.05), whereas BFU-E was not enhanced. The mode of cytokine exposure was not a determinant of colony formation.
Department of Obstetrics and Gynecology, Huddinge Hospital, Karolinska Institute, Sweden.
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S
Ek
M
M
Westgren
L
L
Markling
A
A
Kjeldgaard
O
O
Ringdén
D001854:Bone Marrow Cells; D002455:Cell Division; D016207:Cytokines / Q000494:pharmacology*; D015672:Erythroid Precursor Cells / Q000166:cytology; D005260:Female; D005312:Fetal Blood / Q000166:cytology; D005333:Fetus; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D006098:Granulocytes / Q000166:cytology; D006412:Hematopoietic Stem Cells / Q000166:cytology*; D006801:Humans; D007377:Interleukin-3 / Q000494:pharmacology; D015850:Interleukin-6 / Q000494:pharmacology; D007700:Kinetics; D008264:Macrophages / Q000166:cytology; D008533:Megakaryocytes / Q000166:cytology; D011247:Pregnancy; D019089:Stem Cell Factor / Q000494:pharmacology
D016207:Cytokines; D007377:Interleukin-3; D015850:Interleukin-6; D019089:Stem Cell Factor; D016178:Granulocyte-Macrophage Colony-Stimulating Factor