1. Profiling of healthy and asthmatic airway smooth muscle cells following interleukin-1β treatment: a novel role for CCL20 in chronic mucus hypersecretion.
- Author
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Faiz A, Weckmann M, Tasena H, Vermeulen CJ, Van den Berge M, Ten Hacken NHT, Halayko AJ, Ward JPT, Lee TH, Tjin G, Black JL, Haghi M, Xu CJ, King GG, Farah CS, Oliver BG, Heijink IH, and Burgess JK
- Subjects
- Adolescent, Adult, Aged, Asthma drug therapy, Case-Control Studies, Cells, Cultured, Epithelial Cells drug effects, Epithelial Cells metabolism, Female, Gene Expression, Humans, Male, Middle Aged, Mucus metabolism, Myocytes, Smooth Muscle drug effects, Sputum metabolism, Young Adult, Asthma metabolism, Chemokine CCL20 metabolism, Interleukin-1beta pharmacology, MicroRNAs metabolism, Myocytes, Smooth Muscle metabolism
- Abstract
Chronic mucus hypersecretion (CMH) contributes to the morbidity and mortality of asthma, and remains uncontrolled by current therapies in the subset of patients with severe, steroid-resistant disease. Altered cross-talk between airway epithelium and airway smooth muscle cells (ASMCs), driven by pro-inflammatory cytokines such as interleukin (IL)-1β, provides a potential mechanism that influences CMH. This study investigated mechanisms underlying CMH by comparing IL-1β-induced gene expression profiles between asthma and control-derived ASMCs and the subsequent paracrine influence on airway epithelial mucus production in vitro IL-1β-treated ASMCs from asthmatic patients and healthy donors were profiled using microarray analysis and ELISA. Air-liquid interface (ALI)-cultured CALU-3 and primary airway epithelial cells were treated with identified candidates and mucus production assessed.The IL-1β-induced CCL20 expression and protein release was increased in ASMCs from moderate compared with mild asthmatic patients and healthy controls . IL-1β induced lower MIR146A expression in asthma-derived ASMCs compared with controls. Decreased MIR146A expression was validated in vivo in bronchial biopsies from 16 asthmatic patients versus 39 healthy donors. miR-146a-5p overexpression abrogated CCL20 release in ASMCs. CCL20 treatment of ALI-cultured CALU-3 and primary airway epithelial cells induced mucus production, while CCL20 levels in sputum were associated with increased levels of CMH in asthmatic patients.Elevated CCL20 production by ASMCs, possibly resulting from dysregulated expression of the anti-inflammatory miR-146a-5p, may contribute to enhanced mucus production in asthma., Competing Interests: Conflict of interest: M. Van den Berge reports research grants (paid to university) from Teva, Chiesi and GlaxoSmithKline, outside the submitted work. J.L. Black reports grants from the National Health and Medical Research Council, during the conduct of the study. J.K. Burgess reports grants from the National Health and Medical Research Council, during the conduct of the study., (Copyright ©ERS 2018.)
- Published
- 2018
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