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Interferon gamma (IFNG or IFN-γ) is a dimerized soluble cytokine that is the only member of the type II class of interferons. [5] The existence of this interferon, which early in its history was known as immune interferon, was described by E. F. Wheelock as a product of human leukocytes stimulated with phytohemagglutinin, and by others as a product of antigen-stimulated lymphocytes. [6]
An interferon-stimulated gene (ISG) is a gene that can be expressed in response to stimulation by interferon. [ 1 ] [ 2 ] Interferons bind to receptors on the surface of a cell, initiating protein signaling pathways within the cell.
Interferons (IFNs, / ˌ ɪ n t ər ˈ f ɪər ɒ n / IN-tər-FEER-on [1]) are a group of signaling proteins [2] made and released by host cells in response to the presence of several viruses. In a typical scenario, a virus-infected cell will release interferons causing nearby cells to heighten their anti-viral defenses.
After recognizing viral DNA, DNA sensors initiate the downstream signaling pathways by activating STING-mediated interferon response. [15] Adenovirus, herpes simplex virus, HSV-1 and HSV-2, as well as the negative-stranded RNA virus, vesicular stomatitis virus (VSV), have been shown to be able to activate a STING-dependent innate immune ...
CXCL10 is secreted by several cell types in response to IFN-γ.These cell types include monocytes, endothelial cells and fibroblasts. [5] CXCL10 has been attributed to several roles, such as chemoattraction for monocytes/macrophages, T cells, NK cells, and dendritic cells, promotion of T cell adhesion to endothelial cells, antitumor activity, and inhibition of bone marrow colony formation and ...
The human interferon-gamma receptor complex consists the heterodimer of two chains: IFNGR1 and IFNGR2. [2] [3] In unstimulated cells, these subunits are not preassociated with each other but rather associate through their intracellular domains with inactive forms of specific Janus family kinases (Jak1 and Jak2). Jak1 and Jak2 constitutively ...
Type III interferons induce a similar response to type I interferons, but their expression is limited to epithelial cells. [1] [4] The receptor is coded for by number of different genes, due to the diversity of types of interferons. Regulation of cell surface receptor levels plays an important role in the regulation and limiting of interferon ...
An inflammatory cytokine or proinflammatory cytokine is a type of signaling molecule (a cytokine) that is secreted from immune cells like helper T cells (T h) and macrophages, and certain other cell types that promote inflammation.