Interferon response of the cystic fibrosis bronchial epithelium to major and minor group rhinovirus infection

Schögler, Aline; Stokes-Luginbühl, Andrea; Casaulta Aebischer, Carmen; Regamey, Nicolas; Edwards, Michael R; Johnston, Sebastian L; Jung, Andreas; Moeller, Alexander; Geiser, Thomas; Alves, Marco (2015). Interferon response of the cystic fibrosis bronchial epithelium to major and minor group rhinovirus infection. Journal of cystic fibrosis, 15(3), pp. 332-339. Elsevier 10.1016/j.jcf.2015.10.013

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Rhinoviruses (RVs) are associated with exacerbations of cystic fibrosis (CF), asthma and COPD. There is growing evidence suggesting the involvement of the interferon (IFN) pathway in RV-associated morbidity in asthma and COPD. The mechanisms of RV-triggered exacerbations in CF are poorly understood. In a pilot study, we assessed the antiviral response of CF and healthy bronchial epithelial cells (BECs) to RV infection, we measured the levels of IFNs, pattern recognition receptors (PRRs) and IFN-stimulated genes (ISGs) upon infection with major and minor group RVs and poly(IC) stimulation. Major group RV infection of CF BECs resulted in a trend towards a diminished IFN response at the level of IFNs, PRRs and ISGs in comparison to healthy BECs. Contrary to major group RV, the IFN pathway induction upon minor group RV infection was significantly increased at the level of IFNs and PRRs in CF BECs compared to healthy BECs.

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