Phosphoinositide 3-kinase δ inhibitor suppresses interleukin-17 expression in a murine asthma model

S. J. Park, K. S. Lee, S. R. Kim, K. H. Min, H. Moon, M. H. Lee, C. R. Chung, H. J. Han, K. D. Puri, Y. C. Lee

    Research output: Contribution to journalArticlepeer-review

    55 Citations (Scopus)

    Abstract

    Phosphoinositide 3-kinases (PI3Ks) contribute to the pathogenesis of asthma by regulating the activation of inflammatory mediators, inflammatory cell recruitment and immune cell function. Recent findings have indicated that PI3Ks also regulate the expression of interleukin (IL)-17, which has been recognised as an important cytokine involved in airway inflammation. In the present study, we investigated a role of PI3Kδ in the regulation of IL-17 expression in allergic airway disease using a murine model of asthma. After ovalbumin inhalation, administration of a selective p110d inhibitor, IC87114, significantly attenuated airway infiltration of total cells, lymphocytes, neutrophils and eosinophils, as well as airway hyperresponsiveness, and attenuated the increase in IL-17 protein and mRNA expression. Moreover, IC87114 reduced levels of IL-4, -5 and -13, expression of keratinocyte chemoattractant protein and mRNA, and nuclear factor (NF)-κB activity. In addition, a NF-κB inhibitor, BAY 11-7085 substantially reduced the increase in IL-17 protein levels. Our results also showed that inhibition of IL-17 activity with an anti-IL-17 antibody remarkably reduced airway inflammation and hyperresponsiveness. These findings suggest that inhibition of the p110d signalling pathway suppresses IL-17 expression through regulation of NF-κB activity and, thus, has therapeutic potential in asthma. Copyright

    Original languageEnglish
    Pages (from-to)1448-1459
    Number of pages12
    JournalEuropean Respiratory Journal
    Volume36
    Issue number6
    DOIs
    Publication statusPublished - 2010 Dec 1

    Keywords

    • Asthma
    • Interleukin-17
    • Nuclear factor-κB
    • P110δ
    • Phosphoinositide 3-kinase

    ASJC Scopus subject areas

    • Pulmonary and Respiratory Medicine

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