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Key Documents

SRP3076

Sigma-Aldrich

IL-13 Variant human

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

Synonym(s):

interleukin 13

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.32

biological source

human

recombinant

expressed in E. coli

Assay

≥98% (HPLC)
≥98% (SDS-PAGE)

form

lyophilized

mol wt

12.6 kDa

packaging

pkg of 10 μg

technique(s)

cell culture | mammalian: suitable

impurities

<0.1 EU/μg endotoxin, tested

color

white to off-white

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... IL13(3596)

General description

IL13 (interleukin 13) is a classic cytokine produced by Th2 (T-helper) cells. This gene is localized to human chromosome 5q31, and is composed of four exons and three introns.
Recombinant human IL-13 is a 12.5 kDa protein consisting of 114 amino acid residues.

Application

IL-13 variant human has been used for the treatment of THP1 monocytes, along with with IL-4 and phorbol myristate acetate (PMA), to study the ability of SFN (sulforaphane) to induce THP1 differentiation into M2 macrophage cells.

Biochem/physiol Actions

IL13 (interleukin 13) is up-regulated during parasitic infections, and participates in host′s protective immunity against Schistosoma japonicum. This protein promotes eosinophil activation resulting in elevated specific IgE against adult and larval antigens. During acute infection it promotes egg expulsion through increased intestinal contractility. It acts as a liver protective agent where it promotes formation of liver granulomas in a CD4+ T cell-mediated manner, which results in liver fibrosis. In airway disorders, such as asthma, chronic obstructive pulmonary disease (COPD), and cystic fibrosis lung disease, IL13 promotes the formation of airway goblet cells, resulting in excess mucus secretion, which in turn, is regulated by IL13-activated autophagy. In adult subjects with ever-asthma, SNP (single nucleotide polymorphism) rs848 in this gene is linked with symptom severity.

Sequence

MSPGPVPPST ALRELIEELV NITQNQKAPL CNGSMVWSIN LTAGMYCAAL ESLINVSGCS AIEKTQRMLS GFCPHKVSAG QFSSLHVRDT KIEVAQFVKD LLLHLKKLFR EGQFN

Physical form

Lyophilized from 10 mM Sodium Citrate, pH 4.0.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in 20 mM Acetic Acid to a concentration of 0.1-0.5 mg/ml. Note: Allow the reconstituted vial to sit at 4°C for at >2 hours before use. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

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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Sulforaphane regulates phenotypic and functional switching of both induced and spontaneously differentiating human monocytes.
Pal S and Konkimalla VB
International Immunopharmacology, 35, 85-98 (2016)
An Interleukin 13 Polymorphism Is Associated with Symptom Severity in Adult Subjects with Ever Asthma.
Accordini S et al
PLoS ONE, 11(3), e0151292-e0151292 (2016)
IL13 activates autophagy to regulate secretion in airway epithelial cells.
Dickinson JD et al
Autophagy, 12(2), 397-409 (2016)
M Wills-Karp et al.
Science (New York, N.Y.), 282(5397), 2258-2261 (1998-12-18)
The worldwide incidence, morbidity, and mortality of allergic asthma are increasing. The pathophysiological features of allergic asthma are thought to result from the aberrant expansion of CD4(+) T cells producing the type 2 cytokines interleukin-4 (IL-4) and IL-5, although a
Xin Long et al.
PloS one, 10(8), e0135360-e0135360 (2015-08-11)
The aim of this study was to determine whether two polymorphisms in the gene encoding IL13 previously associated with Schistosoma hematobium (S. hematobium) and S. mansoni infection are associated with S. japonicum infection. Single nucleotide polymorphisms (SNPs) rs1800925 (IL13/-1112C>T) and

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