Interleukin 1 and/or tumor necrosis factor-alpha synergize with granulocyte-macrophage colony-stimulating factor to enhance histamine synthesis in hematopoietic cells: role of prostaglandin E2.
Previously, we have shown that granulocyte-macrophage colony-stimulating factor (GM-CSF) stimulates histamine synthesis by normal murine hematopoietic cells. Addition of either interleukin (IL) 1 (alpha or beta) or murine recombinant tumor necrosis factor (TNF)-alpha to murine recombinant GM-CSF (at optimal or suboptimal concentrations) enhances its activity on bone marrow histamine synthesis up to 70%. Evidence is provided that these synergies between GM-CSF and IL 1 or TNF-alpha are mediated by prostaglandin E2 (PGE2) production since (a) GM-CSF together with either IL 1 or TNF-alpha stimulates PGE2 synthesis by bone marrow cells, while none of these factors does it alone; (b) exogenous PGE2 (ranging from 10(-6) M to 10(-10) M) potentiates GM-CSF-induced histamine synthesis in a dose-dependent manner; and (c) indomethacin, a cyclooxygenase inhibitor, completely abrogates the synergistic action of IL 1 and TNF-alpha on GM-CSF-induced histamine generation. Conversely, histamine synthesis promoted by IL 3, the unique cytokine sharing this property with GM-CSF, cannot be modulated by IL 1, TNF-alpha or PGE2, suggesting two distinct mechanisms for the induction of this biological activity in hematopoietic progenitor cells.
Piquet-Pellorce
C
C
Institut National de la Santé et de la Recherche Médicale (INSERM), U 25 Hôpital Necker, Paris, France.
Homo-Delarche
F
F
Dy
M
M
D000818:Animals; D001854:Bone Marrow Cells; D002460:Cell Line; D003115:Colony-Stimulating Factors / Q000494:pharmacology*; D015232:Dinoprostone / Q000494:pharmacology*; D004357:Drug Synergism; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D006133:Growth Substances / Q000494:pharmacology*; D006412:Hematopoietic Stem Cells / Q000502:physiology*; D006632:Histamine / Q000096:biosynthesis*; D066298:In Vitro Techniques; D007213:Indomethacin / Q000494:pharmacology; D007375:Interleukin-1 / Q000494:pharmacology*; D051379:Mice; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology*
D003115:Colony-Stimulating Factors; D006133:Growth Substances; D007375:Interleukin-1; D011994:Recombinant Proteins; D014409:Tumor Necrosis Factor-alpha; D006632:Histamine; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D015232:Dinoprostone; D007213:Indomethacin