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Growth-promoting effect of recombinant interleukin 1 and tumor necrosis factor for a human astrocytoma cell line.
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1987
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ImmunotoxicologyImmunologyImmune RegulationCell DeathImmunologic MechanismCell ProliferationImmunotherapyMurine Il 1GliomaTumor BiologyNeuroinflammationInflammationTumor Necrosis FactorRecombinant Interleukin 1NeuroimmunologyAllergyAutoimmune DiseaseImmune SurveillanceAutoimmunityBrain-immune InteractionCell BiologyHuman Il 1CytokineIl 1Cancer ImmunosurveillanceGrowth-promoting EffectMedicine
IL 1 can exhibit dichotomous effects in the sense that it is cytotoxic for certain cells, although growth promoting for other cells. Because IL 1 is growth promoting for astrocytes, but cytotoxic for melanoma cells, the current investigation evaluated the effect of IL 1 upon astrocytomas. The human astrocytoma U373 was found to incorporate [3H]thymidine after exposure to recombinant human IL 1 alpha and IL 1 beta and murine IL 1 alpha. Surprisingly, U373 also incorporated [3H]thymidine after exposure to recombinant TNF. The response of the U373 to IL 1 may be used as a simple and sensitive assay for IL 1.