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Within the IL18 receptor complex, responsible for the binding of the proinflammatory cytokine IL18, but not IL1A nor IL1B. Involved in IL18-mediated IFNG synthesis from T-helper 1 (Th1) cells. Contributes to IL18-induced cytokine production, either independently of SLC12A3, or as a complex with SLC12A3.
Gene References into Functions
IL-18, IL-18R and IL-18BP expression in eosinophil are involved in the inflammatory reaction of asthma. PMID: 28395725
IL18R1 rs1035130 may be associated with schizophrenia. PMID: 26736035
IL-18 and IL-18R polymorphisms may contribute to the development and lymph node metastasis of PTC. PMID: 26600055
strong evidence that IL-18 and IL18Ralpha have important functions in the pathogenesis of allergic asthma PMID: 26561030
PDGFB and IL18R1 represent plausible candidates for studying the pathophysiology of these disorders in the context of TLR4 activation PMID: 25327457
The architecture of the IL-18 receptor second domain (D2) is unique among the other IL-1R family members, which presumably distinguishes them from the IL-1 receptors that exhibit a more promiscuous ligand recognition mode. PMID: 25500532
polymorphisms in the interleukin 18 receptor 1 gene and tuberculosis susceptibility among Chinese PMID: 25360588
IL-37 requires the receptors IL-18Ralpha and IL-1R8 to carry out its multifaceted anti-inflammatory program upon innate signal transduction. PMID: 25729923
There was no association between the rs917997 in IL18R gene and rs187238 in IL18 gene polymorphisms and risk for non-Hodgkin's malignant lymphomas in Novosibirsk population. PMID: 24909718
IL-18, IL-18BP, and IL-18R may have roles in the pathogenesis of epithelial ovarian carcinoma PMID: 24963217
IL-18R downregulates IFN-alpha production by activation-induced splicing of IL-18Ralpha into 2 isoforms: the full-length receptor (IL-18Ralpha1) and a novel, truncated variant (IL-18Ralpha2), a competitive molecular decoy inhibiting canonical IL-18Ralpha1/IL-18Rbeta signaling. PMID: 25170117
structural basis for the specific recognition of IL-18 by its alpha receptor PMID: 25261253
increased levels of soluble IL-18Ralpha complex in serum may also exert an antagonistic effect in vivo and play an important role in the inflammatory process in allergic asthma. PMID: 23963474
Association between single nucleotide polymorphisms in the IL18R1, IL18 and interferon-gamma genes and smallpox vaccine induced adaptive immunity. PMID: 23901078
Our study reveals the important role of IL12/IL18-mediated transcriptional regulation of IFN-gamma production in leprosy. PMID: 23103228
Genetic variation in the promoter region of IL18, but not IL18R1, may be associated with knee osteoarthritis. PMID: 22136483
The soluble IL-18Ralpha complex could be a potentially useful biomarker for the diagnosis of rheumatoid arthritis PMID: 21435242
IL18 and its receptor may play an important role in the pathogenesis of allergic asthma. PMID: 21965503
IL18 and IL18R1 genes as plausible genes regulating the humoral immune response to smallpox vaccine in both Caucasians and African Americans. PMID: 21742843
The levels of plasma IL-18 and IL-18R on CD3(+) lymphocytes were significantly increased in active phase immune thrombocytopenia than in remission phase and controls. PMID: 19954659
Report increased expression of IL18R1 in multiple sclerosis but did not find evidence of a genetic association with SNPs. PMID: 20354066
These data suggest a role for IL-1F family members in psoriasis. PMID: 20833839
IL-18 and IL-18Ralpha might upregulate the expression of Th1-cytokines in immune thrombocytopenia patients. PMID: 20627039
Interleukin-18 receptor expression may possibly be responsible for the pathologic process of adenomyosis. PMID: 19394601
These results demonstrate how IL-18 activity is regulated by TNFalpha and TGF-beta1, and how IFNgamma production through regulation of IL-18 receptor and T-bet expression. PMID: 19879772
Expression of the IL-18 receptor is demonstrated on dendritic cells (DC) in peripheral blood and epidermis; on monocyte-derived DC its expression is up-regulated by interferon-gamma. PMID: 14662834
The biologically active IL-8R complex requires the membrane-proximal third immunoglobulin-like domain in IL-18Ralpha for formation of IL-18R ternary complex as well as for signaling involved in IL-18-induced interferon-gamma in natural killer cells. PMID: 14662859
IL-1F6, IL-1F8, and IL-1F9 signal through IL-1Rrp2 and IL-1RAcP in Jurkat cells. PMID: 14734551
the promoter region of IL-18 receptor has two novel single nucleotide polymorphisms PMID: 15009178
Thus, our results identified a functional region in the IL-1R AcP required for the recruitment and activation of PI 3-kinase. PMID: 15044087
Transfection of C33A cervical cancer cells with the IL-18 receptor induced IL-18 expression, and enhanced intracellular reactive oxygen species and Fas expression. PMID: 15202785
review of structure, function and tissue distribution of IL-18R [review] PMID: 15323361
The overexpression of IL-18Ralpha predominantly by CD4+ T cells in sarcoidosis emphasizes crucial roles played by T-helper type 1 cells in the IL-18/IL-18Ralpha system in sarcoidosis PMID: 16236915
Two IFN-gammaR2 chains interact through species-specific determinants in their extracellular domains. Finally, these determinants also participate in the interaction of IFN-gammaR2 with IFN-gammaR1. PMID: 16467876
our data show that variola virus IL-18BP prevents IL-18 from binding to IL-18R by interacting with three residues that are part of the binding site for hIL-18Ralpha. PMID: 16979683
A twofold increase in the percentage of CD4-resting T cells expressing IL-12Rbeta1 and IL-18Ralpha from HIV-1-infected patients; deregulation of the IL-12 and IL-18 pathways may play a role in the immunopathogenesis of HIV-1 infection. PMID: 17403771
There is a significant association between polymorphisms of interleukin 18 receptor 1 and asthma. PMID: 18382474
Our analysis suggests that the variability of IL18R1 genes is unlikely to contribute to modulate the risk of cardiovascular disease PMID: 19473509
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Subcellular Location
Membrane; Single-pass type I membrane protein.
Protein Families
Interleukin-1 receptor family
Tissue Specificity
Highly expressed in leukocytes, spleen, lung. Also expressed, but at lower levels, in liver, small intestine, colon, prostate, thymus, placenta, and heart. Specifically coexpressed with IL18R1 in Th1 cells.