Abrogated by TLRs and p38 the Inflammatory Functions of IL-27 Are STAT1 and Suppresses IL-10 Production but IL-27 Activates Human Monocytes via
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IL-27 induces Th1 differentiation via p38 MAPK/T-bet- and intercellular adhesion molecule-1/LFA-1/ERK1/2-dependent pathways.
IL-27, a novel member of the IL-6/IL-12 family, activates both STAT1 and STAT3 through its receptor, which consists of WSX-1 and gp130 subunits, resulting in positive and negative regulations of immune responses. We recently demonstrated that IL-27 induces Th1 differentiation through ICAM-1/LFA-1 interaction in a STAT1-dependent, but T-bet-independent mechanism. In this study, we further invest...
متن کاملSTAT3 is indispensable to IL-27-mediated cell proliferation but not to IL-27-induced Th1 differentiation and suppression of proinflammatory cytokine production.
IL-27, a member of the IL-6/IL-12 family, activates both STAT1 and STAT3 through its receptor, which consists of WSX-1 and gp130 subunits, resulting in augmentation of Th1 differentiation and suppression of proinflammatory cytokine production. In the present study, we investigated the role of STAT3 in the IL-27-mediated immune functions. IL-27 induced phosphorylation of STAT1, -2, -3 and -5 in ...
متن کاملRegulation of Antitumor Immune Responses by the IL-12 Family Cytokines, IL-12, IL-23, and IL-27
The interleukin (IL)-12 family, which is composed of heterodimeric cytokines including IL-12, IL-23, and IL-27, is produced by antigen-presenting cells such as macrophages and dendritic cells and plays critical roles in the regulation of helper T (Th) cell differentiation. IL-12 induces IFN-γ production by NK and T cells and differentiation to Th1 cells. IL-23 induces IL-17 production by memory...
متن کاملAn indispensable role for STAT1 in IL-27-induced T-bet expression but not proliferation of naive CD4+ T cells.
IL-27 is a novel IL-12 family member that plays a role in the early regulation of Th1 initiation, induces proliferation of naive CD4+ T cells, and synergizes with IL-12 in IFN-gamma production. It has been recently reported that IL-27 induces T-bet and IL-12Rbeta2 expression through JAK1/STAT1 activation. In the present study, we further investigated the JAK/STAT signaling molecules activated b...
متن کاملIncreased IL-17A but Decreased IL-27 Serum Levels in Patients with Multiple Sclerosis
Background: Effector CD4+ T cell subsets play an important role in Multiple Sclerosis (MS). Interleukin-27 (IL-27) suppresses Th (Th1, Th2 and Th17) cells and dampens autoimmunity and tissue inflammation by promoting the generation of Type 1 regulatory T cells (Tr1). Objective: To identify the relative levels of IL-27 and IL-17A in MS disease. Method: In a case-control study, venous blood was c...
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