Dexamethasone and RU24858 induce survival and growth factor receptor bound protein 2, leukotriene B4 receptor 1 and annexin-1 expression in primary human neutrophils
Author(s)
Janka-Junttila, M
Hasala, H
Adcock, I
Moilanen, E
Kankaanranta, H
Type
Journal Article
Abstract
Glucocorticoids are widely used anti-inflammatory medication in diseases like asthma and chronic obstructive pulmonary disease. Glucocorticoids can either activate (transactivation) or inhibit (transrepression) transcription. RU24858 was introduced as a dissociated glucocorticoid and it has been reported to transrepress but not to transactivate. The aim of this study was to compare the effects of RU24858 and dexamethasone in human neutrophils. RU24858 delayed spontaneous neutrophil apoptosis and further enhanced GM-CSF- induced neutrophil survival to a similar extent as dexamethasone. Like dexamethasone RU24858 also reduced CXCL8 and MIP-1α. Unexpectedly however, RU24858 increased the expression of the glucocorticoid-inducible genes BLT-1, Annexin-1 and Grb-2 in neutrophils to a similar level as seen with dexamethasone. We have shown here that dexamethasone and RU24858 both increase Grb-2, BLT1 and Annexin-1 expression and inhibit CXCL8 and MIP-1α production. This suggests that RU24858 was not able to dissociate between transactivation and transrepression in human neutrophils but enhanced neutrophil survival. © the author(s), publisher and licensee Libertas Academica Ltd.
Date Issued
2012-02-28
Date Acceptance
2012-02-28
Citation
Journal of Cell Death, 2012, 5, pp.21-29
ISSN
1179-0660
Publisher
Libertas Academica
Start Page
21
End Page
29
Journal / Book Title
Journal of Cell Death
Volume
5
Copyright Statement
© The Author(s) 2012. Published by Libertas Academica Ltd. This is an open access article. Unrestricted non-commercial use is permitted provided the original work is properly cited.
Identifier
PII: jcd-5-2012-021
Subjects
apoptosis
dexamethasone
glucocorticoids
neutrophils
transactivation
transrepression
Publication Status
Published