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Description
IL-18 (Interleukin-18) is a pleiotropic pro-inflammatory cytokine belonging to the IL-1 superfamily. It signals through a heterodimeric receptor composed of IL-18Rα (binding chain) and IL-18Rβ (signaling chain), leading to activation of NF-κB and MAPK pathways. IL-18 exerts immunomodulatory functions by promoting Th1 immune responses and, in synergy with IL-12, induces IFN-γ production in T cells and NK cells, thereby enhancing cell-mediated immunity (e.g., in anti-tumor or anti-infection responses). Additionally, it activates NK cells, boosting their cytotoxicity and cytokine secretion. Under specific conditions—such as in combination with IL-23—IL-18 can also promote Th17 differentiation and has been implicated in models of autoimmune diseases.
Specifications
| Product Details | |
|---|---|
| Cat. No. | Y02821H |
| Purity | ≥95%, by SDS-PAGE (under reducing (R) & Non-reducing conditions, visualized by Coomassie staining). |
| Endotoxin | ≤10 EU/mg by the LAL method. |
| Bioactivity | Measured by its ability to induce IFN-gamma secretion by KG‑1 human acute myelogenous leukemia cells in the presence of TNF-alpha. The ED50 for this effect is ≤2.0 ng/mL. |
| Accession | Q14116 |
| Alternative Names | Interleukin-18; Iboctadekin; Interferon gamma-inducing factor; IFN-gamma-inducing factor; Interleukin-1 gamma; IL-1 gamma;GIF; IL-18; IL-1g; IL1F4; MG/VAIL C12320 |
| Species | Human |
| Expression System | CHO |
| Mol. Weight | 18.2 kDa |
| Expression Region | Tyr37-Asp193 |
| Tag Info | Tag free |
| Formulation | Lyophilized |
| Buffer | PBS, 5% Mannitol and 0.01% Tween 80, pH7.4. |
| Size | 10μg/50μg/1mg |
| Lead Time | Products are in stock, but custom products may require further consultation. |
| Reconstitution | It is recommended to redissolve in sterile deionized water. |
| Shipping | The product is shipped with blue ice. |
| Storage & Stability | 36 months at 2°C to 8°C in lyophilized state;6 months at -20°C to -80°C under sterile conditions after reconstitution;7-10 days at 2°C to 8°C under sterile conditions after reconstitution;Use a manual defrost freezer and avoid repeated freeze-thaw cycles. |
Features
- ✔ High Purity: This product undergoes stringent purification processes, achieving a purity level of over 95%,ensuring the reliability and reproducibility of experimental results.
- ✔ High Biological Activity: Verified through multiple activity assays, this product effectively induces the expectedbiological responses in target cells.
- ✔ Batch Consistency: Manufactured under strict production and quality control protocols to ensure highconsistency between batches.
- ✔ Animal-Free: Produced without the use of animal-derived components, meeting animal-free requirements.
Applications
Hematology
Supports maturation of NK and T cell functions.
Immunology
Enhances IFN-γ production, amplifying inflammatory responses.
Cell Biology
Regulates inflammation and cell activation signaling.
Data Figures

Figure 1: Measured by its ability to induce IFN-gamma secretion by KG‑1 human acute myelogenous leukemia cells in the presence of TNF-alpha. The ED50 for this effect is ≤2.0 ng/mL.
Instructions for Use
- Dissolve the lyophilized powder in an appropriate sterile buffer in a sterile environment before use.
- Prepare and dilute the solution according to experimental requirements to ensure accurate and reproducible results.
- Do not mix with other similar products to avoid cross-reactivity and potential interference.
Cautions
• Research Use Only: This product is not suitable for clinical diagnostics or therapeutic applications.
• Preservation: Handle according to instructions to preserve its activity and stability.
• Support: Contact our technical support team if you encounter any issues or questions.
Documents
When can I expect my order to ship?
Most orders are filled and shipped within 2-3 business days from the time they are received.
Our standard shipping usually take 2-5 days.
We also provide express shippping for time-sensitive deliveries.
Email contact@biofargo.com if you have any requirements.

