Critical regulation of Th17 cell differentiation by serum amyloid-A signalling in Behcet's disease.

Critical regulation of Th17 cell differentiation by serum amyloid-A signalling in Behcet's disease. Immunol Lett. 2018 Oct 29;: Authors: Lucherini OM, Lopalco G, Cantarini L, Emmi G, Lopalco A, Venerito V, Vitale A, Iannone F Abstract The current understandings on cellular and molecular biology suggest that Th17 axis plays a pivotal role in Behcet's disease (BD) pathogenesis. Recently the role of serum amyloid-A (SAA) as a potential marker of disease activity in BD patients has been explored, and it has been reported that the occurrence of specific clinical features are significantly associated with high serum levels of this inflammatory mediator. The aim of this study was to investigate the cytokine-like activity of SAA in inducing Th17 differentiation from CD4 + T naive cells in BD. Purified peripheral monocytes from BD and healthy control (HC) were stimulated with SAA "in vitro", and secreted IL-8, TNF-α, IL-18, IFN-α, IFN-γ, IL-1β and IL-6 were measured using a Bio-Rad multiplex cytokine immunoassay. To assess Th17 differentiation, purified CD4 + T cells were challenged with anti-CD3/CD28 antibodies, while cultured with supernatant derived from SAA stimulated monocytes, and intracellular staining of IL-17 A and IFN-γ was evaluated by flow-cytometry. Furthermore, peripheral blood mononuclear cells (PBMCs) were stimulated with SAA and transcript levels of RAR-related orphan nuclear receptor (ROR)-γt and IL-17 A we...
Source: Immunology Letters - Category: Allergy & Immunology Authors: Tags: Immunol Lett Source Type: research