ArticleiScience2025
Bronchial smooth muscle extracellular vesicles interfere with bronchial epithelium metabolism and function in asthma.
Article in iScience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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21 authors.
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Abstract
Bronchial smooth muscle (BSM) remodeling is an important feature of severe asthma pathophysiology. We previously showed that asthmatic BSM is metabolically different and increased rhinovirus (RV) replication rate, the main trigger of severe asthma exacerbations. Extracellular vesicles (EVs) are the key mediator in cell-cell communication, but the role of BSM cells-derived EVs on bronchial epithelial has never been investigated in asthma. Using severe asthmatic and non-asthmatic tissue collection, we show that asthmatic BSM cells are able to produce a greater amount of EVs containing metabolites involved in bioenergetics. We study the bronchial epithelium energetic rewiring following stimulation with asthmatic BSM cells-derived EVs. Modifications of bronchial epithelium metabolic behavior were associated with an increased ATP production and a breakdown of bronchial epithelium barrier function such as ciliary beating frequency and efficiency. Finally, we show that asthmatic BSM cells-derived EVs increased RV replication in bronchial epithelium following RV infection.
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