Glucocorticoids regulate natural killer cell function epigenetically Journal Article

Authors: Eddy, J. L.; Krukowski, K.; Janusek, L; Mathews, H. L.
Article Title: Glucocorticoids regulate natural killer cell function epigenetically
Abstract: Although glucocorticoids are well known for their capacity to suppress the immune response, glucocorticoids can also promote immune responsiveness. It was the purpose of this investigation to evaluate the molecular basis for this apparent dichotomous immunologic effect. Glucocorticoid treatment of natural killer cells (NK) was shown to reduce NK cell cytolytic activity by reduction of histone promoter acetylation for perforin and granzyme B, which corresponded with reduced mRNA and protein for each. In contrast, glucocorticoid treatment increased histone acetylation at regulatory regions for interferon gamma and IL-6, as well as chromatin accessibility for each. This increase in histone acetylation was associated with increased proinflammatory cytokine mRNA and protein production upon cellular stimulation. These immunologic effects were evident at the level of the individual cell and demonstrate glucocorticoids to epigenetically reduce NK cell cytolytic activity while at the same time to prime NK cells for proinflammatory cytokine production.
Journal Title: Cellular immunology
Volume: 290
Issue: 1
ISSN: 1090-2163; 0008-8749
Publisher: Elsevier Inc  
Date Published: 2014
Start Page: 120
End Page: 130
Language: ENG
Notes: CI: Copyright (c) 2014; JID: 1246405; OTO: NOTNLM; 2014/04/15 [received]; 2014/05/08 [revised]; 2014/05/31 [accepted]; aheadofprint