The European respiratory journal · 2017
Transcriptomic gene signatures associated with persistent airflow limitation in patients with severe asthma.
СтатьяМногоцентровое исследованиеНаблюдательное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Hekking Pieter-Paul, Loza Matthew J, Pavlidis Stelios, De Meulder Bertrand, Lefaudeux Diane, Baribaud Frederic, Auffray Charles, Wagener Ariane H, Brinkman Paul, Lutter René, Bansal Aruna T, Sousa Ana R, Bates Stewart A, Pandis Ioannis, Fleming Louise J, Shaw Dominick E, Fowler Stephen J, Guo Yike, Meiser Andrea, Sun Kai, Corfield Julie, Howarth Peter, Bel Elisabeth H, Adcock Ian M, Chung Kian Fan, Djukanovic Ratko, Sterk Peter J, U-BIOPRED Study Group
Аннотация
A proportion of severe asthma patients suffers from persistent airflow limitation (PAL), often associated with more symptoms and exacerbations. Little is known about the underlying mechanisms. Here, our aim was to discover unexplored potential mechanisms using Gene Set Variation Analysis (GSVA), a sensitive technique that can detect underlying pathways in heterogeneous samples.Severe asthma patients from the U-BIOPRED cohort with PAL (post-bronchodilator forced expiratory volume in 1 s/forced vital capacity ratio below the lower limit of normal) were compared with those without PAL. Gene expression was assessed on the total RNA of sputum cells, nasal brushings, and endobronchial brushings and biopsies. GSVA was applied to identify differentially enriched predefined gene signatures based on all available gene expression publications and data on airways disease.Differentially enriched gene signatures were identified in nasal brushings (n=1), sputum (n=9), bronchial brushings (n=1) and bronchial biopsies (n=4) that were associated with response to inhaled steroids, eosinophils, interleukin-13, interferon-α, specific CD4+ T-cells and airway remodelling.PAL in severe asthma has distinguishable underlying gene networks that are associated with treatment, inflammatory pathways and airway remodelling. These findings point towards targets for the therapy of PAL in severe asthma.