Interleukin-6 enhances growth factor-dependent proliferation of the blast
cells of acute myeloblastic leukemia
T Hoang, A Haman, O Goncalves, GG Wong and SC Clark
Clinical Research Institute of Montreal, Quebec.
The effects of recombinant interleukin-6 (IL-6) on the proliferation of
blast precursors present in the peripheral blood of patients with acute
myeloblastic leukemia (AML) was investigated. IL-6 had little effect by
itself; however, it synergized with granulocyte macrophage colony-
stimulating factor (GM-CSF) and interleukin-3 (IL-3) in the stimulation of
AML blast colony formation. Responsiveness of blast progenitors to IL-6 was
heterogeneous. On normal bone marrow cells the same synergy was observed on
granulocyte and monocyte precursors (GM-CFC), while there was no
significant effect on erythroid and multipotential precursors.
Volume 72,
Issue 2,
pp. 823-826,
08/01/1988
Copyright © 1988 by The American Society of Hematology