How is IFN-gamma produced?
IFN‐γ is primarily secreted by activated T cells and natural killer (NK) cells, and can promote macrophage activation, mediate antiviral and antibacterial immunity, enhance antigen presentation, orchestrate activation of the innate immune system, coordinate lymphocyte–endothelium interaction, regulate Th1/Th2 balance.
Do CD4 cells produce IFN-gamma?
CD4 T cells are a primary source of IFN-γ during the adaptive immune response to M. tuberculosis infection and are required for host survival during both the acute and chronic stages of infection [6, 7].
Which cells express IFN-gamma receptor?
The interferon gamma receptor (IFNγR) is expressed in all nucleated cells as a tetramer composed of two IFNγR1 and two IFNγR2 subunits (130). IFNGR1 maps to 6q23–24, and IFNGR2 maps to 21q22.
Do Th1 cells produce IFN-gamma?
Th1 cells secrete IFN-γ, TNF-β, and IL-2, mediate immune responses against intracellular pathogens, and are associated with pathological processes such as organ-specific autoimmune diseases 1.
What stimulates IFN-gamma production?
IFN-γ production is controlled by cytokines secreted by APCs, most notably interleukin (IL)-12 and IL-18. These cytokines serve as a bridge to link infection with IFN-γ production in the innate immune response [18192021222324].
Where is IFN-gamma produced?
IFN-γ production is largely restricted to cells of the immune system; however, the IFNGR is found on most cells. Therefore IFN-γ is produced by specialized cells, but can bind nearly all cell types to elicit a response. IFN-γ signaling plays a major role in establishing cellular immunity.
Do T cells release IFN-gamma?
IFN-γ is secreted by T helper cells (specifically, Th1 cells), cytotoxic T cells (TC cells), macrophages, mucosal epithelial cells and NK cells. IFN-γ is both an important autocrine signal for professional APCs in early innate immune response, and an important paracrine signal in adaptive immune response.
Do B cells produce IFN-gamma?
B cells produce IFN-gamma in response to IL-12 and IL-18 and when primed by Th1 cells.