NeutralizationTo yield one-half maximal inhibition [ND50] of the biological activity of hIL-4 (1.50 ng/mL), aconcentration of 0.03-0.05 μg/mL of this antibody is required. ELISAIndirect: To detect hIL-4 by indirect ELISA (using 100 μL/well antibody solution) aconcentration of 0.5-2.0 μg/mL of this antibody is required. This antigen affinity purifiedantibody, in conjunction with compatible secondary reagents, allows the detection of atleast 0.2-0.4 ng/well of recombinant hIL-4. Sandwich: To detect hIL-4 by sandwich ELISA (using 100 μL/well antibody solution) aconcentration of 0.5-2.0 μg/mL of this antibody is required. This antigen affinity purifiedantibody, in conjunction with Biotinylated Anti-Human IL-4 (PP1026B1 or PP1026B2) as adetection antibody, allows the detection of at least 0.2-0.4 ng/well of recombinant hIL-4.
Restrictions
For Research Use only
Reconstitution
Restore in sterile water to a concentration of 0.1-1.0 mg/mL.
Buffer
PBS, pH 7.2 without preservatives.
Preservative
Without preservative
Handling Advice
Avoid repeated freezing and thawing.
Storage
4 °C/-20 °C
Storage Comment
Store the antibody prior to reconstitution at -20 °C. Following reconstitution the antibody can be stored at 2-8 °C for one month or at -20 °C for longer.
IL4 is a pleiotropic cytokine produced by activated T cells, mast cells and basophils. It is a ligand for Interleukin 4 receptor. The Interleukin 4 receptor also binds to IL13, which may contribute to many overlapping functions of this cytokine and IL13. IL4 elicits many different biological responses, but has two dominant functions. The first is regulating differentiation of naive CD4+ T cell to the Th2 type. Th2 cells produce IL4, IL5, IL10 and IL13, which tend to favor a humoral immune response while suppressing a cell mediated immune response controlled by Th1 cells. STAT6, a signal transducer and activator of transcription, has been shown to play a central role in mediating the immune regulatory signal of this cytokine. The second is regulating IgE and IgG1 production by B cells. Two alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported.Synonyms: B-cell stimulatory factor 1, BSF1, Binetrakin, IL-4, Lymphocyte stimulatory factor 1, Pitrakinra