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[8] [9] It was developed as a recombinant protein (rhIL-11) as the drug substance oprelvekin. The human IL-11 gene, consisting of 5 exons and 4 introns, is located on chromosome 19, [6] and encodes a 23 kDa protein. IL-11 is a member of the IL-6-type cytokine family, distinguished based on their use of the common co-receptor gp130.
In humans treated with oprelvekin on a daily base a twofold increase in fibrinogen levels occurred. Healthy volunteers displayed an increase in von-Willebrand-factor (vWf) activity. Isolated molecules formed under oprelvekin were found to have exact the same multimere structure as the 'normal' factor and were therefore fully functioning.
The cause of adult-onset Still's disease is unknown and it is not heritable, but it presumably involves interleukin-1 (IL-1), since medications that block the action of IL-1β are effective treatments. Interleukin-18 is expressed at high levels. [2] [10] [11]
The severity of GvHD is highly variable and is influenced by the amount of native cells present in the environment along with other regulatory T cells, T H 1, T H 2, or T H 17 phenotypes. [10] Both CD4 + and CD8 IL-17 producing T cells have been shown to cause aTH1, causing tissue inflammation and resulting in severe GVHD. [11]
They act by inhibiting gene expression of cytokines including Interleukin 1 (IL-1), IL-2, IL-3, IL-4, IL-5, IL-6, IL-8, and TNF-alpha by binding to corticosteroid response elements on DNA. [1] This decrease in cytokine production reduces T cell proliferation. With decreased T cell proliferation there is decreased production of IL-2.
The receptors can both bind all three forms of IL-1 (IL-1 alpha, IL-1 beta and IL-1 receptor antagonist). The crystal structures of IL1A and IL1B [ 9 ] have been solved, showing them to share the same 12-stranded beta-sheet structure as both the heparin binding growth factors and the Kunitz-type soybean trypsin inhibitors. [ 10 ]
Cytokine-induced killer cells (CIK) cells are a group of immune effector cells featuring a mixed T- and natural killer (NK) cell-like phenotype.They are generated by ex vivo incubation of human peripheral blood mononuclear cells (PBMC) or cord blood mononuclear cells with interferon-gamma (), anti-CD3 antibody, recombinant human interleukin (IL)-1 and recombinant human interleukin (IL)-2.
The interleukin-1 receptor antagonist (IL-1RA) is a protein that in humans is encoded by the IL1RN gene. [ 5 ] [ 6 ] IL-1RA was initially called the IL-1 inhibitor and was discovered separately in 1984 by two independent laboratories. [ 7 ]