Recombinant Human IL-18BP Protein (C-Fc)

Name: Recombinant Human IL-18BP Protein (C-Fc)
Brand: Beta LifeScience
SKU: BL-0042NP
Availability: InStock

BL-0042NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

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Product Overview

Description	Recombinant Human Interleukin-18-binding Protein is produced by our Mammalian expression system and the target gene encoding Thr31-Gly194 is expressed with a human IgG1 Fc tag at the C-terminus.
Accession	O95998
Synonym	Interleukin-18-binding protein; Tadekinig-alfa and IL18BP
Gene Background	Interleukin-18-binding protein, also known as Tadekinig-alfa and IL18BP, contains 1 Ig-like C2-type domain. IL18BP is constitutively expressed and secreted in mononuclear cells. IL18BP functions as an IL18 inhibitor. IL18BP binds to IL18, prevents the binding of IL18 to its receptor, and thus inhibits IL18-induced IFN-gamma production. It has been shown that IL18BP may be a promising molecular approach to inhibit neointimal hyperplasia and arteriosclerosis progression following coronary and peripheral angioplasty.
Molecular Mass	44.8 KDa
Apmol Mass	60-75 KDa, reducing conditions
Formulation	Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.
Endotoxin	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity	Not tested
Reconstitution	Always centrifuge tubes before opening.Do not mix by vortex or pipetting.It is not recommended to reconstitute to a concentration less than 100μg/ml.Dissolve the lyophilized protein in distilled water.Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt.Reconstituted protein solution can be stored at 2-8°C for 2-7 days.Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature.Upon receipt, store it immediately at the temperature listed below.
Usage	For Research Use Only

Target Details

Target Function	Isoform A binds to IL-18 and inhibits its activity. Functions as an inhibitor of the early TH1 cytokine response.
Subcellular Location	Secreted.
Database References	HGNC: 5987 OMIM: 604113 KEGG: hsa:10068 STRING: 9606.ENSP00000260049 UniGene: PMID: 27649785 epigenetic silencing by single CpG methylation determines differential IL18BP inducibility in monocytic versus epithelial cells. T PMID: 29409936 a large proportion blood basophils from patients with asthma express IL-18 and IL-18BP. mast cells and basophils are implicated in the pathogenesis of asthma via an IL-18-related mechanism. PMID: 29505668 The maintenance of normal production of IL-18BP may contribute, at least in part, to the ability ofLong Term Non-Progressors to delay AIDS progression. PMID: 27863336 Platelets also contain the IL-18 antagonist, the IL-18-Binding Protein (IL-18BP); however, it is not synthesized in them de novo, is present in pre-made form and is released irrespective of platelet activation. PMID: 27914933 The serum levels of IL-37, which were correlated with antibody production and the serum levels of total IL-18 and IL-18BP, were elevated in the patients with primary Sjogren's syndrome. PMID: 28057714 an imbalance in the production of IL-18 and its antagonist (an increase in the production of IL-18 with a decrease, no increase or an insufficient increase in the production of IL-18BP) has been described in many chronic inflammatory diseases in humans. PMID: 26898120 IL-18, IL-18R and IL-18BP expression in eosinophil are involved in the inflammatory reaction of asthma. PMID: 28395725 the inhibition of IL-18 signaling by IL-18BPa may be involved in the development of pulmonary vascular involvement leading to pulmonary hypertension and modulate the systemic inflammation in systemic sclerosis PMID: 26777734 The natural IL-18 inhibitor IL-18BP further regulates IL-18 activity in the extracellular environment. Review. PMID: 25548255 imbalance of IL-18/IL-18BP ratio in IgA nephropathy especially in patients with arteriolar lesions PMID: 25807634 IL-18, IL-18BP, and IL-18R may have roles in the pathogenesis of epithelial ovarian carcinoma PMID: 24963217 HPV16 E7 oncoprotein increases production of the IL18BP in keratinocytes. PMID: 24478434 these data indicate that IL-18BP, which is produced in EOC in response to microenvironmental factors, may inhibit endogenous or exogenous IL-18 activity PMID: 23873689 Data suggest that the imbalance of IL-18/IL-18BP might play an important role in the pathogenesis of systemic juvenile idiopathic arthritis (SJIA) and it might go hand-in-hand with the severity of SJIA. PMID: 23419721 Due to highly significant increases in circulating IL-18BP in schizophrenia compared to controls, the levels of free IL-18 are not significantly different between schizophrenic groups. PMID: 22913567 Imbalance between IL-18 and IL-18BP may play an important role in pathogenesis of idiopathic thrombocytopenic purpura. PMID: 21867627 High IL-18 BP levels indicate the severity of existing glomerular injury in systemic lupus erythematosus. PMID: 21656327 The balance between interleukin-18 (IL-18) and its endogenous antagonist, IL-18 binding protein (IL-18BP), was evaluated in children with Henoch-Schonlein purpura. PMID: 22289535 IL-18/IL-18BP imbalance plays an important role in pathogenesis of primary immune thrombocytopenia. PMID: 21418867 In T2DM patients, 18 BP began to increase after IL-18 increased and reached a threshold, in which case kidney dysfunction would have developed. PMID: 21440322 increased levels of both IL-18 and its natural inhibitor IL-18BP, characterise SLE PMID: 21126942 In lines of intestinal epithelial cells from inflammatory bowel disease patients, interferon-gamma selectively up-regulated IL-18 binding protein. PMID: 21078084 lupus nephritis patients present lower IL-18BP mRNA expression and higher serum levels of IL-18 than those in normal controls PMID: 20140691 Altogether, data presented herein indicate that direct action of STAT1 on the IL-18BP promoter at the proximal GAS element is key to IL-18BP expression by IFN-gamma-stimulated DLD-1 colon carcinoma cells PMID: 19046253 High circulating levels in patients with active Systemic Lupus Erythematosus PMID: 19699611 Endometrial interleukin-18 binding protein mRNA expression may possibly be responsible for the pathologic process of adenomyosis. PMID: 19394601 Suggest that an early rise in IL-18 levels may play a role in reverse remodeling process following aortic valve replacement. PMID: 19961286 Since IL-18 plays a major role in perpetuating hemophagocytosis, the failure of IFNgamma to induce IL-18BP may constitute a fundamental pathogenetic mechanism PMID: 20072626 trancriptional activation and release of IL-18 binding protein in response to IFN-gamma PMID: 11739524 IL-18BP messenger transcript and protein are significantly increased in surgically resected specimens from active Crohn's disease compared with control patients, correlating with an up-regulation of IL-18. PMID: 11907126 after binding to IL-18BP, IL-1F7b forms a complex with IL-18Rbeta, depriving the beta-chain of forming a functional receptor complex with IL-18Ralpha and thus inhibiting IL-18 activity PMID: 12381835 IRF-1-CEBPbeta complex activate the promoter of IL-18 binding protein. PMID: 12482935 Administration of recombinant human IL-18BP not only reduces symptoms of murine contact hypersensitivity (CHS) during the elicitation phase but also significantly decreases inflammation in mice that had previously undergone CHS without treatment. PMID: 12874202 High endogenous levels of IL-18BP in trangenic mice effectively neutralize IL-18 and are protective in response to different inflammatory stimuli. PMID: 12960225 production of IL-18BP in response to IL-12 and IL-18 was regulated differently in blood and synovial cells. PMID: 15188356 IL-18 levels, which are determined in part by variation in IL18/IL18BP, play a role in coronary heart disease development and postsurgery outcome. PMID: 17951325 Despite the elevated IL-18BP levels during active disease, free IL-18 remained higher than in the inactive disease stages, suggesting a potential benefit of administration of exogenous IL-18BP as a therapeutic approach for active Wegener's granulomatosis. PMID: 18594952

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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Recombinant Human IL-18BP Protein (C-Fc)

Recombinant Human IL-18BP Protein (C-Fc)

Product Overview

Target Details

FAQs