Tumor necrosis factor stimulates Na+/H+ antiporter in human fibroblasts:
dissociation between intracellular alkalinization and cytokine mRNA
accumulation
YY Lee, I Kurtz, K Yamato, Z el-Hajjoui and HP Koeffler
Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA.
Several hormones and cytokines stimulate the cellular Na+/H+ antiporter and
this stimulation may be a signal transduction mechanism to mediate gene
expression. We find that tumor necrosis factor rapidly stimulates both the
Na+/H+ antiporter and the accumulation of mRNA coding for
granulocyte-macrophage colony-stimulating factor and interleukin-6 in
fibroblasts. Further experiments show that these phenomena occur
independent of each other.
Volume 79,
Issue 9,
pp. 2262-2266,
05/01/1992
Copyright © 1992 by The American Society of Hematology