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Caiazzo E, Maione F, Morello S, Lapucci A, Paccosi S, Steckel B, Lavecchia A, Parenti A, Iuvone T, Schrader J, Ialenti A, Cicala C. Adenosine signalling mediates the anti-inflammatory effects of the COX-2 inhibitor nimesulide. Biochem Pharmacol 2016; 112:72-81. [PMID: 27188793 DOI: 10.1016/j.bcp.2016.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 05/13/2016] [Indexed: 12/20/2022]
Abstract
Extracellular adenosine formation from ATP is controlled by ecto-nucleoside triphosphate diphosphohydrolase (E-NTPDase/CD39) and ecto-5'-nucleotidase (e-5NT/CD73); the latter converts AMP to adenosine and inorganic phosphate, representing the rate limiting step controlling the ratio between extracellular ATP and adenosine. Evidence that cellular expression and activity of CD39 and CD73 may be subject to changes under pathophysiological conditions has identified this pathway as an endogenous modulator in several diseases and was shown to be involved in the molecular mechanism of drugs, such as methotrexate, salicylates , interferon-β. We evaluated whether CD73/adenosine/A2A signalling pathway is involved in nimesulide anti-inflammatory effect, in vivo and in vitro. We found that the adenosine A2A agonist, 4-[2-[[6-amino-9-(N-ethyl-β-d-ribofuranuronamidosyl)-9H-purin-2-yl]amino]ethyl]benzenepropanoic acid hydrochloride (CGS21680, 2mg/kg ip.), inhibited carrageenan-induced rat paw oedema and the effect was reversed by co-administration of the A2A antagonist -(2-[7-amino-2-[2-furyl][1,2,4]triazolo[2,3-a][1,3,5]triazin-5-yl-amino]ethyl)phenol (ZM241385; 3mg/kg i.p.). Nimesulide (5mg/kg i.p.) anti-inflammatory effect was inhibited by pre-treatment with ZM241385 (3mg/kg i.p.) and by local administration of the CD73 inhibitor, adenosine 5'-(α,β-methylene)diphosphate (APCP; 400μg/paw). Furthermore, we found increased activity of 5'-nucleotidase/CD73 in paws and plasma of nimesulide treated rats, 4h following oedema induction. In vitro, the inhibitory effect of nimesulide on nitrite and prostaglandin E2 production by lipopolysaccharide-activated J774 cell line was reversed by ZM241385 and APCP. Furthermore, nimesulide increased CD73 activity in J774 macrophages while it did not inhibit nitrite accumulation by lipopolysaccharide-activated SiRNA CD73 silenced J774 macrophages. Our data demonstrate that the anti-inflammatory effect of nimesulide in part is mediated by CD73-derived adenosine acting on A2A receptors.
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Affiliation(s)
| | - Francesco Maione
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy
| | - Silvana Morello
- Department of Pharmacy, University of Salerno, Fisciano, Salerno, Italy
| | - Andrea Lapucci
- Department of Health Sciences, Clinical Pharmacology and Oncology Section, University of Florence, Florence, Italy
| | - Sara Paccosi
- Department of Health Sciences, Clinical Pharmacology and Oncology Section, University of Florence, Florence, Italy
| | - Bodo Steckel
- Department of Molecular Cardiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Antonio Lavecchia
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy
| | - Astrid Parenti
- Department of Health Sciences, Clinical Pharmacology and Oncology Section, University of Florence, Florence, Italy
| | - Teresa Iuvone
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy
| | - Jürgen Schrader
- Department of Molecular Cardiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Armando Ialenti
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy
| | - Carla Cicala
- Department of Pharmacy, University of Naples Federico II, Napoli, Italy.
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