RGS2 as a critical target for asthma therapy

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In asthma and chronic obstructive pulmonary disease, activation of G(q)-protein-coupled receptors causes bronchoconstriction. Rgs2-deficient mice, first created by the Siderovski and Penninger labs, revealed enhanced bronchoconstriction to spasmogens and an absence of bronchoprotection by long-acting β(2)-adrenoceptor agonists (LABAs). RGS2 gene expression was identified as a genomic mechanism of bronchoprotection that is induced by glucocorticoids plus LABAs in human airway smooth muscle and provides a rational explanation for the clinical efficacy of inhaled corticosteroid (glucocorticoid)/LABA combinations in obstructive airways diseases. See PNAS 108:19713-8 (2011).

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