Effect of long-term corticosteroid treatment on microRNA and gene-expression profiles in COPD

Alen Faiz*, Katrina Steiling, Mirjam P. Roffel, Dirkje S. Postma, Avrum Spira, Marc E. Lenburg, Malte Borggrewe, Tim R. Eijgenraam, Marnix R. Jonker, Gerard H. Koppelman, Simon D. Pouwels, Gang Liu, Yuriy O. Alekseyev, Stephen Lam, Pieter S. Hiemstra, Peter J. Sterk, Wim Timens, Corry-Anke Brandsma, Irene H. Heijink, Maarten van den Berge

*Corresponding author voor dit werk

Onderzoeksoutput: ArticleAcademicpeer review

27 Citaten (Scopus)
55 Downloads (Pure)

Samenvatting

The aim was to investigate whether microRNA (miRNA) expression is modulated by inhaled corticosteroid (ICS) treatment

We performed genome-wide miRNA analysis on bronchial biopsies of 69 moderate/severe chronic obstructive pulmonary disease (COPD) patients at baseline and after 6- and 30-month treatment with the ICS fluticasone propionate or placebo. The effect of ICS on miRNA expression was validated in differentiated primary bronchial epithelial cultures, and functional studies were conducted in BEAS-2B cells. MiRNAs affected by ICS and their predicted targets were compared to an independent miRNA dataset of bronchial brushings from COPD patients and healthy controls.

Treatment with ICS for both 6 and 30 months significantly altered the expression of four miRNAs, including miR-320d, which was increased during ICS treatment compared with placebo. The ICS-induced increase of miR-320d was confirmed in primary airway epithelial cells. MiR-320d negatively correlated targets were enriched for pro-inflammatory genes and were increased in the bronchial brushes of patients with lower lung function in the independent dataset. Overexpression of miR-320d in BEAS-2B cells dampened cigarette smoke extract-induced pro-inflammatory activity via inhibition of nuclear factor-kappa B.

Collectively, we identified miR-320d as a novel mediator of ICS, regulating the pro-inflammatory response of the airway epithelium.

Originele taal-2English
Artikelnummer1801202
Aantal pagina's12
TijdschriftEuropean Respiratory Journal
Volume53
Nummer van het tijdschrift4
Vroegere onlinedatum2019
DOI's
StatusPublished - 1-apr.-2019

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