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Key Documents

SRP4137

Sigma-Aldrich

IL-4 human

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

Synonym(s):

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

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About This Item

MDL number:
UNSPSC Code:
12352202
NACRES:
NA.32

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.

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.

Application

IL-4 (interleukin 4) has been used to polarize the human monocytic leukemia (THP-1) cells to M2-like phenotype.
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.

Reconstitution

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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Linkage analysis of IL4 and other chromosome 5q31.1 markers and total serum immunoglobulin E concentrations.
Marsh DG, et al.
Science, 264, 1152-1156 (1994)
Association of interleukin 4 gene polymorphisms with dental implant loss.
Pigossi SC, et al.
Implant Dentistry, 23, 723-731 (2014)
Purification of a 130-kDa T cell glycoprotein that binds human interleukin 4 with high affinity.
Galizzi JP, et al.
The Journal of Biological Chemistry, 265, 439-444 (1990)
Effect of lipopolysaccharide and cytokines on synthesis and secretion of leukotrienes from endometrial epithelial cells of pigs.
Jana B and Czarzasta J
Animal Reproduction Science, 168, 116-125 (2016)
Shuichi Sakamoto et al.
Oncoimmunology, 8(12), e1671760-e1671760 (2019-11-20)
A solid tumor consists of cancer and stromal cells, which comprise the tumor microenvironment (TME). Tumor-associated macrophages (TAMs) are usually abundant in the TME, contributing to tumor progression. In cases of peritoneal dissemination of gastric cancer (GC), the contribution of

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