| Literature DB >> 3257575 |
S W Lee1, A P Tsou, H Chan, J Thomas, K Petrie, E M Eugui, A C Allison.
Abstract
Transcription of the interleukin 1 beta (IL-1 beta) gene was studied by mRNA hybridization with a cDNA probe in the human promonocytic cell line U-937. Phorbol ester and lipopolysaccharide increased the steady-state level of IL-1 beta mRNA. Glucocorticoids markedly decreased IL-1 beta mRNA levels by two mechanisms. Transcription of the IL-1 gene was inhibited, as shown by in vitro transcription assays with nuclei isolated from glucocorticoid-treated cells. Moreover, kinetic analyses and pulse-labeling of mRNAs showed that glucocorticoids selectively decrease the stability of IL-1 beta mRNA, without affecting the stability of beta-actin and FOS mRNAs. Inhibition of the formation and effects IL-1 is a mechanism by which glucocorticoids can exert antiinflammatory and immunosuppressive effects.Entities:
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Year: 1988 PMID: 3257575 PMCID: PMC279735 DOI: 10.1073/pnas.85.4.1204
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205