Nuclear receptors are involved in the enhanced IL-6 production by melatonin in U937 cells - PubMed (original) (raw)

. 2000 May-Aug;9(3-4):197-202.

doi: 10.1159/000014639.

Affiliations

Nuclear receptors are involved in the enhanced IL-6 production by melatonin in U937 cells

J M Guerrero et al. Biol Signals Recept. 2000 May-Aug.

Abstract

This report shows that melatonin enhances IL-6 production by U937 cells via a nuclear receptor-mediated mechanism. Resting U937 cells only express membrane (mt1) melatonin receptors. In these cells, melatonin did not modify basal production of IL-6 or when activated by PMA plus lipopolysaccharide, a treatment that downregulates the expression of mt1 receptor. However, in U937 cells activated with IFN-gamma, which induces the expression of the ROR alpha 1 and ROR alpha 2 nuclear receptors and represses the expression of the mt1 receptor, melatonin can activate IL-6 production. These results show that the expression of nuclear melatonin receptor but not membrane receptors is sufficient for melatonin to activate cytokine production in human lymphocytic and monocytic cell lines.

Copyright 2000 S. Karger AG, Basel

PubMed Disclaimer

Similar articles

Cited by

Publication types

MeSH terms

Substances

LinkOut - more resources