Adenosine receptor agonism protects against NETosis and thrombosis in antiphospholipid syndrome.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31015489.
- Also identified by DOI 10.1038/s41467-019-09801-x and PMC identifier 6478874.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Potentiation of neutrophil extracellular trap (NET) release is one mechanism by which antiphospholipid antibodies (aPL Abs) effect thrombotic events in patients with antiphospholipid syndrome (APS). Surface adenosine receptors trigger cyclic AMP (cAMP) formation in neutrophils, and this mechanism has been proposed to regulate NETosis in some contexts. Here we report that selective agonism of the adenosine A<sub>2A</sub> receptor (CGS21680) suppresses aPL Ab-mediated NETosis in protein kinase A-dependent fashion. CGS21680 also reduces thrombosis in the inferior vena cavae of both control mice and mice administered aPL Abs. The antithrombotic medication dipyridamole is known to potentiate adenosine signaling by increasing extracellular concentrations of adenosine and interfering with the breakdown of cAMP. Like CGS21680, dipyridamole suppresses aPL Ab-mediated NETosis via the adenosine A<sub>2A</sub> receptor and mitigates venous thrombosis in mice. In summary, these data suggest an anti-inflammatory therapeutic paradigm in APS, which may extend to thrombotic disease in the general population.
Medical subject headings
- Adenosine
- Adenosine A2 Receptor Agonists
- Antiphospholipid Syndrome
- Extracellular Traps
- Neutrophils
- Phenethylamines
- Venous Thrombosis