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SRP4193

Sigma-Aldrich

IL-33 human

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

Synonym(s):

C9orf26, DKFZp586H0523, DVS27, NF-HEV, NFEHEV, RP11-575C20

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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

~18.1 kDa

packaging

pkg of 10 μg

impurities

endotoxin, tested

NCBI accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... IL33(90865)

General description

IL-33 (interleukin 33) is a potent immunomodulatory cytokine that belongs to the IL-1 family, which also includes IL-1β and IL-18. This protein as first identified as a nuclear factor showing predominant expression in human high endothelial venules. IL-33 shows high expression levels in endothelial cells and epithelium, such as keratinocytes, that are in direct contact with the environment.
Recombinant human IL-33 produced from Escherichia coli is a non-disulfide-linked homodimeric, non-glycosylated polypeptide chain consisting of 160 amino acids and having a total molecular mass of 18.1kDa.

Biochem/physiol Actions

IL-33 (interleukin 33) functions as an extracellular cytokine, and also translocates to the nucleus where it inhibits gene expression. It acts as a ligand for ST2/ IL-1 receptor-like 1 (growth STimulation expressed gene 2), and ST2 is expressed on cells such as CD34+ hematopoietic progenitor cells, eosinophils, basophils, T-helper 2 cell (Th2), and dendritic, NK (natural killer), endothelial and mast cells. Polymorphisms in this gene as well as its receptor are linked with atopic dermatitis, allergies and asthma. This protein is also thought to function as a profibrogenic cytokine, signaling through ST2, where it facilitates the stimulation and progression of fibrosis in different types of organs and tissues, such as pulmonary, liver, and uterine leiomyoma. In renal transplant recipients, the increased levels of IL-33 might be implicated in the pathogenesis of chronic allograft dysfunction (CAD).

Physical form

Sterile filtered and lyophilized with 10 mM sodium phosphate, pH 7.5.

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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The Potential Role of IL-33 in Renal Transplant Recipients with Chronic Allograft Dysfunction.
Zhang J et al
Annals of Transplantation : Quarterly of the Polish Transplantation Society, 21, 611-618 (2016)
Esophageal Epithelial-Derived IL-33 Is Upregulated in Patients with Heartburn.
Sei H et al
PLoS ONE, 11(4), e0154234-e0154234 (2016)
Elizabeth A Oczypok et al.
The Journal of allergy and clinical immunology, 136(3), 747-756 (2015-05-02)
Single nucleotide polymorphisms in the human gene for the receptor for advanced glycation end-products (RAGE) are associated with an increased incidence of asthma. RAGE is highly expressed in the lung and has been reported to play a vital role in
Targeting the IL-1 family members in skin inflammation.
Jensen LE
Current Opinion in Investigational Drugs, 11(11), 1211-1220 (2010)
Ying Lei et al.
PloS one, 10(7), e0133774-e0133774 (2015-07-28)
In several clinical and experimental studies IL-33 and its receptor have been found to play important roles in the development of asthma and allergic airway inflammation. We evaluated the effects of vaccination against IL-33 in a mouse model of airway

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