Vitamin D represses rhinovirus replication in cystic fibrosis cells by inducing LL-37.

Schögler, Aline; Muster, Ricardo J; Kieninger, Elisabeth; Casaulta Aebischer, Carmen; Tapparel, Caroline; Jung, Andreas; Moeller, Alexander; Geiser, Thomas; Regamey, Nicolas; Alves, Marco (2016). Vitamin D represses rhinovirus replication in cystic fibrosis cells by inducing LL-37. European respiratory journal, 47(2), pp. 520-530. European Respiratory Society 10.1183/13993003.00665-2015

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Vitamin D has immunomodulatory properties in the defence against pathogens. Its insufficiency is a widespread feature of cystic fibrosis (CF) patients, which are repeatedly suffering from rhinovirus (RV)-induced pulmonary exacerbations.To investigate whether vitamin D has antiviral activity, primary bronchial epithelial cells from CF children were pre-treated with vitamin D and infected with RV16. Antiviral and anti-inflammatory activity of vitamin D was assessed. RV and LL-37 levels were measured in bronchoalveolar lavage (BAL) of CF children infected with RV.Vitamin D reduced RV16 load in a dose-dependent manner in CF cells (10(-7 )M, p<0.01). The antiviral response mediated by interferons remained unchanged by vitamin D in CF cells. Vitamin D did not exert anti-inflammatory properties in RV-infected CF cells. Vitamin D increased the expression of the antimicrobial peptide LL-37 up to 17.4-fold (p<0.05). Addition of exogenous LL-37 decreased viral replication by 4.4-fold in CF cells (p<0.05). An inverse correlation between viral load and LL-37 levels in CF BAL (r=-0.48, p<0.05) was observed.RV replication in primary CF bronchial cells was reduced by vitamin D through the induction of LL-37. Clinical studies are needed to determine the importance of an adequate control of vitamin D for prevention of virus-induced pulmonary CF exacerbations.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Paediatric Medicine
04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Pneumology
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Pneumologie (Pädiatrie)
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Forschungsbereich Mu50 > Forschungsgruppe Pneumologie (Erwachsene)

UniBE Contributor:

Schögler, Aline, Kieninger, Elisabeth, Casaulta Aebischer, Carmen, Geiser, Thomas (A), Regamey, Nicolas, Alves, Marco


600 Technology > 610 Medicine & health




European Respiratory Society




Anette van Dorland

Date Deposited:

20 Apr 2016 12:23

Last Modified:

29 Jan 2023 23:34

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