Urban Dust Nanoparticles Induce Proinflammatory Activation of Human Bronchial Epithelial Cellsстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 апреля 2026 г.
Аннотация:Air pollution remains a major environmental challenge, largely driven by urban dust composedof suspended solid particles of diverse origins and chemical compositions. Particulate matter (PM2.5) andultrafine urban dust nanoparticles (NPs), with diameters smaller than 2.5 μm and 100 nm, respectively, posea particular threat to human health. In this study, we present the first evidence that NPs induce pro-inflammatory activation of human bronchial epithelial cells. Exposure to non-cytotoxic concentrations of NPsled to a significant increase in the mRNA levels of pro-inflammatory markers IL-8, IL-1β, IL-6, and ICAM-1,accompanied by increased secretion of the cytokines IL-8 and IL-6. Heat treatment of NPs, which removedtheir organic components, completely abolished their ability to stimulate cytokine secretion. NP-inducedupregulation of pro-inflammatory gene expression depended on both surface-adsorbed organic compoundsand inorganic particle constituents.