Soluble Guanylate Cyclase As an Alternative Target for Bronchodilator
Soluble guanylate cyclase as an alternative target for PNAS PLUS bronchodilator therapy in asthma Arnab Ghosha, Cynthia J. Koziol-Whiteb, Kewal Asosingha, Georgina Chenga, Lisa Ruplea, Dieter Gronebergc, Andreas Friebec, Suzy A. A. Comhaira, Johannes-Peter Staschd, Reynold A. Panettieri Jr.b, Mark A. Aronicaa,e, Serpil C. Erzuruma,e,1, and Dennis J. Stuehra,1 aDepartment of Pathobiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195; bRutgers Institute for Translational Medicine & Science, Rutgers University, New Brunswick, NJ 08901; cInstitute of Vegetative Physiology, Universität Würzburg, Wuerzburg 97070, Germany; dPharma Research Centre, Bayer Pharma AG, D-42096 Wuppertal, Germany; and eRespiratory Institute, Cleveland Clinic, Cleveland, OH 44195 Edited by Louis J. Ignarro, University of California, Los Angeles School of Medicine, Beverly Hills, CA, and approved March 11, 2016 (received for review December 10, 2015) Asthma is defined by airway inflammation and hyperresponsive- S1). Graded doses of the slow-release NO donor DETA/NO ness, and contributes to morbidity and mortality worldwide. Although [3,3-Bis(aminoethyl)-1-hydroxy-2-oxo-1-triazene] produced bron- bronchodilation is a cornerstone of treatment, current bronchodilators chodilation in human PCLS similar to what was induced by a become ineffective with worsening asthma severity. We investigated standard β-agonist bronchodilator, Formoterol (Fig. 1B). In ad- an alternative pathway that involves activating the airway smooth dition, having a NO donor (sodium nitroprusside, SNP) present at a muscle enzyme, soluble guanylate cyclase (sGC). Activating sGC by its subeffective concentration made the preconstricted human small natural stimulant nitric oxide (NO), or by pharmacologic sGC agonists airways more responsive to lower doses of the β-agonist broncho- – – BAY 41 2272 and BAY 60 2770, triggered bronchodilation in normal dilator Isoproterenol (Fig.
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