Effects of glucocorticoids and cyclosporine on IL-2 and IκBα mRNA expression in human peripheral blood mononuclear cells

William A. Briggs, Su Hua Han, Horoshi Miyakawa, James F. Burdick, H. Moo Kwon

Research output: Contribution to journalArticlepeer-review

Abstract

To evaluate molecular mechanisms that might account for the heterogeneity in the in vitro responsiveness of individual subjects' peripheral blood mononuclear cells (PBMC) to immunosuppressive drugs, the authors quantitated in normal human cells the suppressive effects of the glucocorticoids prednisolone and methylprednisolone and of cyclosporine on interleukin-2 (IL-2) mRNA expression and IL-2 production, as well as the stimulatory effect of these drugs on IκBα mRNA expression. As expected, cyclosporine was significantly more suppressive than either glucocorticoid of IL-2 mBNA expression and IL-2 production by mitogen-stimulated PBMC, with variable degrees of inhibition in cells from individual subjects. The authors confirmed in human PBMC the stimulation of IκBα mRNA expression by the glucocorticoid reported by others in HeLa and transfected Jurkat cell lines. In addition, the authors observed a stimulatory effect on IκBα mRNA expression by cyclosporine as well in 8 of 10 PBMC preparations studied, suggesting a possible role of calcineurin in the regulation of IκBα production. Interindividual variability in the intracellular mechanisms of action, possibly based on molecular polymorphisms, might be one factor contributing to differences among patients in their clinical responses to treatment with such drugs.

Original languageEnglish (US)
Pages (from-to)119-124
Number of pages6
JournalJournal of clinical pharmacology
Volume39
Issue number2
DOIs
StatePublished - Feb 13 1999

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)

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