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Description
IL-3 (Interleukin-3), also known as Multi-CSF, is a cytokine secreted by activated T cells, mast cells, and natural killer (NK) cells. It exerts its function by binding to the IL-3 receptor complex, composed of IL-3Rα (CD123) and the common beta chain (CD131), thereby activating downstream signaling pathways such as JAK/STAT, MAPK, and PI3K/Akt. IL-3 plays a critical regulatory role in both hematopoietic and non-hematopoietic systems. It promotes the survival and proliferation of hematopoietic stem and progenitor cells, and supports the growth of myeloid cells, including granulocytes, monocytes, and mast cells. Furthermore, IL-3 enhances the antigen-presenting capacity of dendritic cells (DCs) and stimulates B cell proliferation and antibody secretion.
Specifications
| Product Details | |
|---|---|
| Cat. No. | Y02121H |
| Purity | ≥95%, by SDS-PAGE (under conditions, visualized by Coomassie staining). |
| Endotoxin | ≤10 EU/mg by the LAL method. |
| Bioactivity | Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is 0.02-0.1 ng/mL. |
| Accession | P08700 |
| Species | Human |
| Expression System | E. coli |
| Mol. Weight | 15.1 kDa |
| Expression Region | Ala20-Phe152 |
| Tag Info | Tag free |
| Formulation | Lyophilized |
| Buffer | Lyophilized from a 0.22 μm filtered solution containing 10 mM PB, 5% Trehalose 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 -20°C to -80°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
Key hematopoietic growth factor promoting proliferation of multipotent progenitors.
Immunology
Supports myeloid immune cell generation and function.
Stem Cell Research
Widely used for hematopoietic stem/progenitor cell expansion in vitro.
Cell Biology
Controls survival and differentiation via STAT and PI3K pathways.
Data Figures

Figure 1: Measured in a cell proliferation assay using TF-1 cells.
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.

