Granulocyte-macrophage colony-stimulating factor (CSF) and multilineage CSF
recruit human monocytes to express granulocyte CSF
W Oster, A Lindemann, R Mertelsmann and F Herrmann
Department of Hematology, Johannes Gutenberg University, Mainz, FRG.
We assessed the capacity of recombinant human granulocyte-macrophage
colony-stimulating factor (GM-CSF) and multilineage (Multi)-CSF to induce
release of granulocyte-CSF (G-CSF) by highly purified peripheral blood
monocyte (Mo) preparations. Our results reveal that GM-CSF and Multi-CSF,
either alone or in a synergistic concert, activate Mo to transcribe G-CSF
messenger (m) RNA and release biologically active G- CSF protein into their
culture supernatants. G-CSF had no regulatory effect on Mo expression of
cytoplasmic G-CSF mRNA levels and G-CSF protein secretion by itself. These
differential actions of CSFs provide further insight into self-regulatory
mechanisms within the growth factor hierarchy system.
Volume 73,
Issue 1,
pp. 64-67,
01/01/1989
Copyright © 1989 by The American Society of Hematology