SRP4137 Sigma-Aldrich

IL-4 human

recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC)

Synonym: B cell stimulating factor, BCDF, BCGF, BSF-1, IL-4, Lymphocyte stimulatory factor 1



Related Categories Cancer Research, Cell Biology, Cell Culture, Cell Signaling and Neuroscience, Cytokines & Growth Factors,
biological source   human
recombinant   expressed in E. coli
assay   ≥98% (HPLC)
  ≥98% (SDS-PAGE)
form   lyophilized
mol wt   ~15.0 kDa
packaging   pkg of 10 μg
impurities   endotoxin, tested
NCBI accession no.   P05112
shipped in   wet ice
storage temp.   −20°C
Gene Information   human ... IL4(3565)


General description

The gene IL-4 (interleukin 4) is mapped to human chromosome 5q31.1. Human IL-4 is a 15kDa globular protein containing 130 amino acid residues. It is a cytokine which is mainly secreted by activated Th2 (T helper) cells.


In inflamed porcine endometrium, IL-4 (interleukin 4)-human has been used to study effects of IL-4 on the leukotriene B4 and leukotriene C4 synthesis as well as secretion. It has been used to study the effect of IL-4 on synthesis and secretion of leukotrienes from endometrial epithelial cells of pigs.

Biochem/physiol Actions

IL-4 (Interleukin 4) is a potent lymphoid cell growth factor that stimulates the growth and survivability of certain B cells and T cells. It exhibits anti-inflammatory responses and participates in immune processes by providing protection from intracellular pathogens. IL-4 also plays an important role in Th2 (T helper cells) differentiation. Additionally, it can suppress pro-inflammatory cytokines. IL-4 is associated with pemphigus. Also, mutation in the gene is linked with risk of dental implant loss. In children, IL-4 might be involved with risk of asthma and Mycoplasma pneumoniae infection.

Physical form

Sterile filtered and lyophilized with no additives.


Centrifuge the vial prior to opening. Avoid freeze-thaw cycles.

Reconstitute in water to a concentration of 0.1-1.0 mg/mL. The solution can then be diluted into other aqueous buffers.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


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