PMID- 32400135 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 2092-7355 (Print) IS - 2092-7363 (Electronic) IS - 2092-7355 (Linking) VI - 12 IP - 4 DP - 2020 Jul TI - In Vitro and In Vivo Validation of EP2-Receptor Agonism to Selectively Achieve Inhibition of Mast Cell Activity. PG - 712-728 LID - 10.4168/aair.2020.12.4.712 [doi] AB - PURPOSE: Agonism of the prostaglandin E2 receptor, E-prostanoid receptor 2 (EP2), may represent an alternative protective mechanism in mast cell (MC)-mediated diseases. Previous studies have suggested that activation of the MC EP2 receptor prevents pathological changes in the murine models of allergic asthma. This work aimed to analytically validate the EP2 receptor on MCs as a therapeutic target. METHODS: Murine MC lines and primary cultures, and MCs bearing the human immunoglobulin E (IgE) receptor were subjected to IgE-mediated activation subsequent to incubation with selective EP2 agonists. Two molecularly unrelated agonists, butaprost and CP-533536, were tested either in vitro or in 2 in vivo models of allergy. RESULTS: The diverse range of MC populations was consistently inhibited through selective EP2 agonism in spite of exhibiting a heterogeneous phenotype. Such inhibition occurred in both mouse and human IgE (hIgE)-mediated activation. The use of molecularly unrelated selective EP2 agonists allowed for the confirmation of the specificity of this protective mechanism. This effect was further demonstrated in 2 in vivo murine models of allergy where MCs are a key to pathological changes: cutaneous anaphylaxis in a transgenic mouse model expressing the hIgE receptor and aeroallergen-induced murine model of asthma. CONCLUSIONS: Selective EP2 agonism is a powerful pharmacological strategy to prevent MCs from being activated through IgE-mediated mechanisms and from causing deleterious effects. The MC EP2 receptor may be an effective pharmacological target in allergic and other MC-mediated conditions. CI - Copyright (c) 2020 The Korean Academy of Asthma, Allergy and Clinical Immunology . The Korean Academy of Pediatric Allergy and Respiratory Disease. FAU - Plaza, Judith AU - Plaza J AUID- ORCID: 0000-0003-2217-3095 AD - Department of Pharmacology, Therapeutics and Toxicology, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Torres, Rosa AU - Torres R AUID- ORCID: 0000-0002-9109-4035 AD - Department of Pharmacology, Therapeutics and Toxicology, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Urbano, Adrian AU - Urbano A AUID- ORCID: 0000-0002-4107-1644 AD - Department of Pharmacology, Therapeutics and Toxicology, Universitat Autonoma de Barcelona, Barcelona, Spain. FAU - Picado, Cesar AU - Picado C AUID- ORCID: 0000-0001-7400-4993 AD - Department of Pneumology and Respiratory Allergy, Hospital Clinic i Universitari de Barcelona, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain. FAU - de Mora, Fernando AU - de Mora F AUID- ORCID: 0000-0002-3002-6004 AD - Department of Pharmacology, Therapeutics and Toxicology, Universitat Autonoma de Barcelona, Barcelona, Spain. fernando.demora@uab.cat. LA - eng PT - Journal Article PL - Korea (South) TA - Allergy Asthma Immunol Res JT - Allergy, asthma & immunology research JID - 101518382 PMC - PMC7225001 OTO - NOTNLM OT - IgE OT - allergy OT - anaphylaxis OT - asthma OT - inflammation OT - mast cell OT - prostaglandin E receptor 2 OT - prostaglandin E2 COIS- There are no financial or other issues that might lead to conflict of interest. EDAT- 2020/05/14 06:00 MHDA- 2020/05/14 06:01 PMCR- 2020/07/01 CRDT- 2020/05/14 06:00 PHST- 2019/12/12 00:00 [received] PHST- 2020/02/27 00:00 [revised] PHST- 2020/03/01 00:00 [accepted] PHST- 2020/05/14 06:00 [entrez] PHST- 2020/05/14 06:00 [pubmed] PHST- 2020/05/14 06:01 [medline] PHST- 2020/07/01 00:00 [pmc-release] AID - 12.712 [pii] AID - 10.4168/aair.2020.12.4.712 [doi] PST - ppublish SO - Allergy Asthma Immunol Res. 2020 Jul;12(4):712-728. doi: 10.4168/aair.2020.12.4.712.