Interleukin-33/Nuclear factor from high endothelial venules, IL33, C9orf26, CHROMOSOME 9 OPEN READING FRAME 26, DKFZp586H0523, DVS27, DVS27 related protein, IL 1F11, IL 33, IL1F11, Interleukin 1 family member 11, Interleukin 33, INTERLEUKIN 33 NFHEV, Interleukin 33 precursor, Interleukin33, NF HEV, NFEHEV, NFHEV, Nuclear factor from high endothelial venules, RP11 575C20.2 IL33_HUMAN.
IL33 is a cytokine which belongs to the IL-1 superfamily, and it induces helper T cells to produce type 2 cytokines. This cytokine was previously named NF-HEV nuclear factor (NF) in high endothelial venules (HEVs), as it was originally identified in these specialized cells.IL33 mediates its biological effects by interacting with the receptors ST2 and IL-1 Receptor Accessory Protein, activating intracellular molecules in the NF-kappaB and MAP kinase signaling pathways that drive production of type 2 cytokines (e.g. IL-4, IL-5 and IL-13) from polarized Th2 cells. The induction of type 2 cytokines by IL-33 in vivo is believed to induce the the severe pathological changes observed in mucosal organs following administration of IL33.