|Application ||WB, IHC-P, IF, E|
|Other Accession||NP_254274, 90865|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||Predicted: 30 kDa; Observed: 36 kDa|
|Application Notes||IL-33 antibody can be used for the detection of IL-33 by Western blot at 1 - 2 μg/mL. For immunofluorescence start at 20 μg/mL. Antibody can also be used for immunohistochemistry starting at 2.5 μg/mL.|
|Target/Specificity||IL-33 antibody was raised against a 19 amino acid synthetic peptide from near the center of human IL-33.|
The immunogen is located within amino acids 150 - 200 of IL-33.
|Reconstitution & Storage||IL-33 antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.|
|Precautions||IL-33 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||C9orf26, IL1F11, NFHEV|
|Function||Cytokine that binds to and signals through the IL1RL1/ST2 receptor which in turn activates NF-kappa-B and MAPK signaling pathways in target cells (PubMed:16286016). Involved in the maturation of Th2 cells inducing the secretion of T-helper type 2-associated cytokines. Also involved in activation of mast cells, basophils, eosinophils and natural killer cells. Acts as a chemoattractant for Th2 cells, and may function as an "alarmin", that amplifies immune responses during tissue injury (PubMed:17853410, PubMed:18836528).|
|Cellular Location||Nucleus Chromosome. Cytoplasmic vesicle, secretory vesicle. Secreted. Note=Associates with heterochromatin and mitotic chromosomes (PubMed:17185418)|
|Tissue Location||Expressed at high level in high endothelial venules found in tonsils, Peyer patches and mesenteric lymph nodes. Almost undetectable in placenta|
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Provided below are standard protocols that you may find useful for product applications.
IL-33 Antibody: Interleukin-33 (IL-33) is a recently identified member of the IL-1 family of cytokines whose other members include IL-1α/beta, IL-1Ra and IL-18. Its receptor has been shown to be ST2, an IL-1 receptor family member that also acts as a negative regulator of TLR-IL-1R signaling and IL-1R accessory protein (IL-1RAcP). Receptor binding of IL-33 activates NF-κB and MAP kinases and induces the expression of TH2-associated cytokines such as IL-4, IL-5 and IL-6. Prolonged IL-33 treatment of mice led to the development of eosinophilia, splenomegaly, and severe pathological changes in mucosal organs such as lungs, esophagus and small intestine. Recent experiments have shown that IL-33 can also co-localize with heterochromatin and possesses transcriptional repressor activities, indicating that IL-33 may function as both a proinflammatory cytokine and an intracellular nuclear factor with transcriptional regulatory properties.
Schmitz J, Owyang A, Oldham E, et al. IL-33, and interleukin-1-like cytokine that signals via the IL-1 receptor-related protein ST2 and induces T helper type 2-associated cytokines. Immunity 2005; 23:479-90.
Dinarello CA. Interleukin-18, a proinflammatory cytokine. Eur. Cytokine Netw. 2000; 11:483-6.
Brint EK, Xu D, Liu H, et al. ST2 is an inhibitor of interleukin 1 receptor and Toll-like receptor 4 signaling and maintains endotoxin tolerance. Nat. Immunol. 2004; 5:373-9.
Chackerian AA, Oldham ER, Murphy EE, et al. IL-1 receptor accessory protein and ST2 comprise the IL-33 receptor complex. J. Immunol. 2007; 179:2551-5.
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