Interleukin-13 induces expression and release of interleukin-1 decoy receptor in human polymorphonuclear cells

Francesco Colotta, Fabio Re, Marta Muzio, Nadia Polentarutti, Adrian Minty, Daniel Caput, Pascual Ferrara, Alberto Mantovani

Research output: Contribution to journalArticlepeer-review


The aim of this study was to examine whether interleukin-13 (IL-13), a cytokine with anti-inflammatory activities, affected expression of interleukin-1 (IL-1) receptors (R) in human polymorphonuclear cells (PMN). Treatment with IL-13 augmented both type I and type II (decoy) R transcripts, with the latter being by far the most represented. The transcriptional inhibitor actinomycin D blocked the induction of IL-1 R mRNAs by IL-13. Nuclear run-off experiments demonstrated an augmented transcriptional rate of IL-1 decoy R in IL-13-treated B lymphoblastoid cells. The protein synthesis inhibitor cycloheximide blocked type I R expression but superinduced decoy R expression. IL-13 augmented the binding of radiolabeled IL-1β on the PMN surface with an increased number of IL-1 receptors and no change in K(d) values. IL-13 induced the surface expression of IL-1 decoy R and the release by PMN of an IL-1-binding protein identified as a soluble version of the IL- 1 decoy R. These results show that PMN is an important target for IL-13 and that induction of expression and release of the IL-1 decoy R, in concert with inhibition of cytokine synthesis, may represent an important mechanism by which IL-13 blocks IL-1, a central mediator of inflammatory reactions.

Original languageEnglish
Pages (from-to)12403-12406
Number of pages4
JournalJournal of Biological Chemistry
Issue number17
Publication statusPublished - Apr 29 1994

ASJC Scopus subject areas

  • Biochemistry


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