6533b856fe1ef96bd12b265f
RESEARCH PRODUCT
Tumor necrosis factor (TNF)-alpha but not TNF-beta induces secretion of colony stimulating factor for macrophages (CSF-1) by human monocytes
Roland MertelsmannSusan D. HornWolfgang OsterAlbrecht LindemannFriedhelm Herrmannsubject
Macrophage colony-stimulating factormedicine.medical_specialtyT-LymphocytesImmunologyIn Vitro TechniquesBiologyBiochemistryMonocytesColony-Forming Units AssayColony-Stimulating FactorsInternal medicinemedicineHumansSecretionLeukapheresisMessenger RNATumor Necrosis Factor-alphaMonocyteCell BiologyHematologyMacrophage ActivationColony-stimulating factorMolecular biologyHaematopoiesisEndocrinologySecretory proteinmedicine.anatomical_structureTumor necrosis factor alphadescription
Abstract Tumor necrosis factor (TNF)-alpha has been identified as a major inducer of colony stimulating factor (CSF)-secretion by human vascular endothelial cells and fibroblasts. In the present study we assessed the capacity of TNFs to induce release of CSF-1 from highly purified peripheral blood monocyte preparations. Whereas monocytes do not accumulate CSF-1 messenger (m)RNA constitutively and consequently do not produce CSF-1 protein, CSF-1 mRNA and protein secretion became detectable, when monocytes were cultured in the presence of TNF-alpha, that was synergistically enhanced by interferon-gamma (IFN-gamma). However, under identical experimental conditions TNF-beta failed to induce monocyte CSF-1 synthesis. Cultures of monocytes in the presence of TNF-beta before addition of TNF-alpha abolished the CSF-1 inducing capacity of TNF-alpha, suggesting that TNF-beta may act as antagonist to TNF-alpha for CSF-1 production. These data point out a previously unrecognized function of TNF-alpha to modulate CSF-1 release by monocytes and demonstrate disparate biological properties of different TNF species in hematopoiesis.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-11-01 | Blood |