PT - JOURNAL ARTICLE AU - Xiaoyang Hua AU - Kelly D. Chason AU - Corey Jania AU - Tatiana Acosta AU - Catherine Ledent AU - Stephen L. Tilley TI - G<sub>s</sub>-Coupled Adenosine Receptors Differentially Limit Antigen-Induced Mast Cell Activation AID - 10.1124/jpet.112.198978 DP - 2013 Feb 01 TA - Journal of Pharmacology and Experimental Therapeutics PG - 426--435 VI - 344 IP - 2 4099 - http://jpet.aspetjournals.org/content/344/2/426.short 4100 - http://jpet.aspetjournals.org/content/344/2/426.full SO - J Pharmacol Exp Ther2013 Feb 01; 344 AB - Mast cell activation results in the immediate release of proinflammatory mediators prestored in cytoplasmic granules, as well as initiation of lipid mediator production and cytokine synthesis by these resident tissue leukocytes. Allergen-induced mast cell activation is central to the pathogenesis of asthma and other allergic diseases. Presently, most pharmacological agents for the treatment of allergic disease target receptors for inflammatory mediators. Many of these mediators, such as histamine, are released by mast cells. Targeting pathways that limit antigen-induced mast cell activation may have greater therapeutic efficacy by inhibiting the synthesis and release of many proinflammatory mediators produced in the mast cell. In vitro studies using cultured human and mouse mast cells, and studies of mice lacking A2B receptors, suggest that adenosine receptors, specifically the Gs-coupled A2A and A2B receptors, might provide such a target. Here, using a panel of mice lacking various combinations of adenosine receptors, and mast cells derived from these animals, we show that adenosine receptor agonists provide an effective means of inhibition of mast cell degranulation and induction of cytokine production both in vitro and in vivo. We identify A2B as the primary receptor limiting mast cell degranulation, whereas the combined activity of A2A and A2B is required for the inhibition of cytokine synthesis.