Creative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
HighlightsCreative Biolabs is offering the most comprehensive services for antibody development projects. With strict regulation and effective execution, we are dedicated to providing the most valuable solutions to complete your projects.
HighlightsCreative Biolabs has established a broad range of platforms for developing novel antibodies or equivalents. These cutting-edge technologies enable our scientists to meet your demands from different aspects and tailor the most appropriate solution that contributes to the success of your projects.
HighlightsWith deep understanding in antibody-related realms and extensive project experience, Creative Biolabs offers a variety of references to help you learn more about our capacities and achievements, including infographic, flyer, case study, peer-reviewed publications, and all kinds of knowledge that can assist your projects. You are also welcome to contact us directly for more specific solutions.
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Interleukin 18 binding protein (IL18BP) is a secreted soluble polypeptide encoded by IL-18 BP gene, which can be secreted by various stromal cells and immune cells and released into the extracellular space. The full-length sequence of the protein does not contain hydrophobic transmembrane helix and membrane anchoring structural domain, and has no cell membrane localization ability. It can be used as a high-affinity extracellular bait ligand, specifically binding mature IL-18 cytokines, and is a key antagonist molecule for regulating IL-18 immune signals. A large number of studies on the binding mechanism have confirmed that IL-18 BP and IL-18 can form a stable complex through electrostatic interaction and hydrophobic interaction, effectively blocking the specific binding of IL-18 with functional receptors on the cell membrane surface, thus blocking the initiation of downstream immune signals.
In the absence of IL-18 BP antagonistic regulation, IL-18-mediated signaling pathway will continue to be over-activated, causing abnormal amplification of immune cascade. By limiting the bioavailability of extracellular IL-18, IL-18 BP inhibits the excessive inflammatory activation effect, and maintains the inflammatory homeostasis and immune basic balance of mucosal and lymphoid microenvironment. When the body is in different immune activation states, cells can differentially regulate the secretion level of IL-18bp, and by constructing a negative feedback control loop, the downstream signal cascade mediated by IL-18 can be specifically antagonized, so as to realize the dynamic balance of inflammatory response. The highly conserved ligand binding domain in the central region of IL-18 BP can form a wide molecular contact surface with IL-18, which can stably bind the target molecule under the condition of physiological extracellular concentration, ensuring the high efficiency and reliability of bait antagonistic effect, and has important physiological significance for maintaining immune homeostasis and avoiding abnormal activation of inflammation.
Sequence variants within IL18BP coding regions might weaken IL-18 binding affinity and disrupt negative immune feedback loops observed in primary tissue models. No other soluble decoy protein replicates the high ligand affinity of IL18BP for IL-18, though other IL-1 family binding factors carry partial overlapping inhibitory capacity. IL18BP exists exclusively as secreted extracellular protein without membrane integration or cytoplasmic retention. Its fully soluble secreted localization grants dual roles in sequestering free IL-18 and restricting receptor-mediated immune signal transduction. Reduced IL18BP secretion elevates unbound extracellular IL-18 concentrations and amplifies inflammatory cascade activity, rendering this decoy polypeptide a suitable research target for cytokine immune homeostasis analysis.
Fig. 1 Schematic of IL‑18 signaling cascade. The secreted soluble IL18BP (upper‑right panel) acts as a decoy molecule to neutralize extracellular IL‑18 and prevent receptor‑mediated signal transduction.1
The biological functions of soluble secreted IL18BP decoy protein are focused on high-affinity cytokine capture and extracellular signal suppression:
Creative Biolabs offers purified IL18BP protein samples produced under unified preparation workflows, including full-length IL18BP constructs and isolated ligand-binding core variants. Truncated fragments cannot support complete high-affinity IL-18 sequestration activity, while full-length forms fit cytokine decoy interaction research. All batches receive uniform quality screening. Functional assessments may only be performed under simulated extracellular aqueous microenvironment setups. Central ligand pocket structure is preserved across batches for comparative cytokine binding testing. Full-length IL18BP samples retain intact IL-18 contact surfaces post-purification, supporting reliable detection of transient decoy-cytokine complexes in functional comparative analysis.
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Creative Biolabs provides cell research models with adjustable IL18BP expression levels, suitable for structural observation of soluble cytokine decoys and extracellular immune ligand research. Sample assessment covers secreted protein quantification and IL-18 binding analysis, enabling side-by-side comparison of cytokine neutralization efficiency under varying IL18BP abundances. These cell models can be paired with immune messenger detection schemes to track inflammatory cascade shifts linked to IL18BP secretion levels.
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Anti-IL18BP recombinant antibodies are generated via standardized workflows, compatible with extracellular fluid protein detection and decoy-cytokine complex identification. The antibody series supports multi-dimensional visualization of IL18BP distribution within tissue interstitial spaces.
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Beyond catalog products, Creative Biolabs offers specialized custom services for IL18BP research:
IL18BP may act as a secreted soluble decoy protein to bind extracellular IL-18 and block receptor-dependent inflammatory immune signaling.
IL18BP secretion status might modulate tissue inflammatory cascade magnitude, serving as a key mediator of extracellular cytokine balance biological processes.
No, all IL18BP related products and services are strictly for research use only, and cannot be applied in clinical workflows. All material design and functional screening are optimized exclusively for basic laboratory research, without meeting clinical application criteria.
Offerings include full-length IL18BP protein, target-specific recombinant antibodies and tunable expression cell research models, supporting research on cytokine decoy-ligand interactions and immune feedback regulation.
Laboratory analysis schemes may include cytokine co-binding assays to assess decoy-ligand interaction capacity under simulated extracellular environments.
