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Chimerigen
IL-4 (human):Fc (human) (rec.) (non-lytic)
250
CHF
CHF 250.00
In stock
CHI-HF-22004-C01010 µgCHF 250.00
CHI-HF-22004-C05050 µgCHF 430.00
| Product Details | |
|---|---|
| Synonyms | Interleukin-4; B Cell Stimulatory Factor 1; BSF-1 |
| Product Type | Protein |
| Properties | |
| Source/Host | CHO cells |
| Sequence |
The extracellular domain of human IL-4 (aa 1-153) is fused to the N-terminus of the Fc region of a mutant human IgG1. |
| Crossreactivity | Human |
| Biological Activity |
Shows the biological function of the IL-4 moiety and exerts a prolonged circulating half-life caused by the modified Fc domain. |
| Purity | ≥98% (SDS-PAGE) |
| Endotoxin Content | <0.06EU/μg protein (LAL test; Lonza). |
| Reconstitution |
Reconstitute 10µg vial in 100µl sterile water. Reconstitute 50µg vial in 50µl sterile water. Add 1X PBS to the desired protein concentration. |
| Formulation | Lyophilized from 0.2μm-filtered solution in PBS. |
| Protein Negative Control | |
| Other Product Data |
Non-lytic: Acts as a long lasting fusion protein which only binds to the receptor. Mutations to the complement (C1q) and FcgR I binding sites of the IgGs Fc fragment render the fusion proteins incapable of antibody directed cytotoxicity (ADCC) and complement directed cytotoxicity (CDC). |
| Declaration | Manufactured by Chimerigen. |
| Shipping and Handling | |
| Shipping | BLUE ICE |
| Short Term Storage | +4°C |
| Long Term Storage | -20°C |
| Handling Advice |
Avoid freeze/thaw cycles. Centrifuge lyophilized vial before opening and reconstitution. |
| Use/Stability |
Stable for at least 1 year after receipt when stored at -20°C. Working aliquots are stable for up to 3 months when stored at -20°C. |
| Documents | |
| MSDS | Inquire |
| Product Specification Sheet | |
| Datasheet |
 Download PDF |
Description
Interleukin-4 (IL-4) is a cytokine produced by type 2 helper T cells, the Th2 cells. These cells tends to make a specific set of lymphokines including IL-4, IL-5, IL-6, IL-10, IL-13, IL-3 and GM-CSF and fail to produce IL-2, IFN-γ, and lymphotoxin (TNF-β). In addition, mast cells can produce IL-4. IL-4 exerts numerous effects on various hematopoietic cell types. On B cells, IL-4 promotes immunoglobulin class switching to IgE and IgG1 isotypes and upregulates MHC class II and CD23 expression. IL-4 promotes survival, growth, and differentiation of both T and B lymphocytes, mast cells and endothelial cells. In addition, IL-4 inhibits the production of TNF, IL-1, and IL-6 by macrophages.
Product References
- Prolonged islet allograft acceptance in the absence of interleukin 4 expression: P. Nickerson, et al.; Transpl. Immunol. 4, 81 (1996)
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