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A single nucleotide polymorphism (SNP) in the gene encoding the type III interferon IFN-λ3 was found to be protective against chronic infection following proven HCV infection [55] and predicted treatment response to interferon-based regimens. The frequency of the SNP differed significantly by race, partly explaining observed differences in ...
The type-I interferons (IFN) are cytokines which play essential roles in inflammation, immunoregulation, tumor cells recognition, and T-cell responses. In the human genome, a cluster of thirteen functional IFN genes is located at the 9p21.3 cytoband over approximately 400 kb including coding genes for IFNα (IFNA1, IFNA2, IFNA4, IFNA5, IFNA6, IFNA7, IFNA8, IFNA10, IFNA13, IFNA14, IFNA16 ...
Human interferon alpha-2 (IFNα2) is a cytokine belonging to the family of type I IFNs. IFNα2 is a protein secreted by cells infected by a virus and acting on other cells to inhibit viral infection. The first description of IFNs as a cellular agent interfering with viral replication was made by Alick Isaacs and Jean Lindenmann in 1957.
Interferons are a type of protein called a cytokine, which is produced in response to infection. [9] When released, they signal to infected cells and other nearby cells that a pathogen is present. [9] This signal is passed from one cell to another by binding of the interferon to a cell surface receptor on a naïve cell. [10]
Interferon-alpha, an interferon type I, was identified in 1957 as a protein that interfered with viral replication. [5] The activity of interferon-gamma (the sole member of the interferon type II class) was described in 1965; this was the first identified lymphocyte-derived mediator. [6]
STING deficiency in mice led to lethal susceptibility to HSV-1 infection due to the lack of a successful type I interferon response. [ 16 ] Point mutation of serine -358 dampens STING-IFN activation in bats and is suggested to give bats their ability to serve as reservoir hosts.
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]
Functions of type III interferons overlap largely with that of type I interferons. Both of these cytokine groups modulate the immune response after a pathogen has been sensed in the organism, their functions are mostly anti-viral and anti-proliferative. However, type III interferons tend to be less inflammatory and show a slower kinetics than ...