The Journal of Experimental Medicine
VeriKine-HS Human IFN-Beta
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© The Rockefeller University Press, 0022-1007/1997/7/189/ $5.00
The Journal of Experimental Medicine, Volume 186, Number 2, July 21, 1997 189-198


Article

Tumor Necrosis Factor {alpha} and Interleukin 1β Enhance the Cortisone/Cortisol Shuttle

Geneviève Escher, Ivo Galli, Bannikuppe S. Vishwanath, Brigitte M. Frey, and Felix J. Frey

From the Division of Nephrology, University Hospital of Berne, 3010 Berne, Switzerland

Endogenously released or exogenously administered glucocorticosteroids are relevant hormones for controlling inflammation. Only 11β-hydroxy glucocorticosteroids, but not 11-keto glucocorticosteroids, activate glucocorticoid receptors. Since we found that glomerular mesangial cells (GMC) express 11β-hydroxysteroid dehydrogenase 1 (11β-OHSD1), which interconverts 11-keto glucocorticosteroids into 11β-hydroxy glucocorticosteroids (cortisone/cortisol shuttle), we explored whether 11β-OHSD1 determines the antiinflammatory effect of glucocorticosteroids. GMC exposed to interleukin (IL)-1β or tumor necrosis factor {alpha} (TNF-{alpha}) release group II phospholipase A2 (PLA2), a key enzyme producing inflammatory mediators. 11β-hydroxy glucocorticosteroids inhibited cytokine-induced transcription and release of PLA2 through a glucocorticoid receptor–dependent mechanism. This inhibition was enhanced by inhibiting 11β-OHSD1. Interestingly, 11-keto glucocorticosteroids decreased cytokine-induced PLA2 release as well, a finding abrogated by inhibiting 11β-OHSD1. Stimulating GMC with IL-1β or TNF-{alpha} increased expression and reductase activity of 11β-OHSD1. Similarly, this IL-1β– and TNF-{alpha}–induced formation of active 11β-hydroxy glucocorticosteroids from inert 11-keto glucocorticosteroids by the 11β-OHSD1 was shown in the Kiki cell line that expresses the stably transfected bacterial β-galactosidase gene under the control of a glucocorticosteroids response element. Thus, we conclude that 11β-OHSD1 controls access of 11β-hydroxy glucocorticosteroids and 11-keto glucocorticosteroids to glucocorticoid receptors and thus determines the anti-inflammatory effect of glucocorticosteroids. IL-1β and TNF-{alpha} upregulate specifically the reductase activity of 11β-OHSD1 and counterbalance by that mechanism their own proinflammatory effect.


Address correspondence to Dr. Felix J. Frey, Division of Nephrology, Inselspital, 3010 Berne, Switzerland. Phone: 41-31-632-96-29; FAX: 41-31-632-94-44.

1Abbreviations used in this paper: dCTP, desoxy CTP; GA, glycyrrhetinic acid; GAPDH, glyceraldehydephosphate dehydrogenase; GMC, glomerular mesangial cells; mRNA, messenger RNA; NAD, nicotinamide adenine dinucleotide; NADP, NAD phosphate; NADPH, reduced form of NADP; OHSD, hydroxysteroid dehydrogenase; PLA2, phospholipase A2; RT-PCR, reverse transcribed PCR.


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