Nori Bovine IL-33 ELISA Kit
$461.00 – $832.00
This ELISA kit is for quantification of IL-33 in bovine. This is a quick ELISA assay that reduces time to 50% compared to the conventional method, and the entire assay only takes 3 hours. This assay employs the quantitative sandwich enzyme immunoassay technique and uses biotin-streptavidin chemistry to improve the performance of the assays. An antibody specific for IL-33 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any IL-33 present is bound by the immobilized antibody. After washing away any unbound substances, a detection antibody specific for IL-33 is added to the wells. Following wash to remove any unbound antibody reagent, a detection reagent is added. After intensive wash a substrate solution is added to the wells and color develops in proportion to the amount of IL-33 bound in the initial step. The color development is stopped, and the intensity of the color is measured.
Alternative names for IL-33: Interleukin 33, IL33
This product is for Laboratory Research Use Only not for diagnostic and therapeutic purposes or any other purposes.
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Description
Nori Bovine IL-33 ELISA Kit Summary
Alternative names for IL-33: Interleukin 33, IL33
Alternative name for bovine: cattle, cow, bull
| Assay Type | Solid Phase Sandwich ELISA |
| Format | 96-well Microplate or 96-Well Strip Microplate |
| Method of Detection | Colorimetric |
| Number of Targets Detected | 1 |
| Target Antigen Accession Number | Q08DU3 |
| Assay Length | 3 hours |
| Quantitative/Semiquantitative | Quantitative |
| Sample Type | Plasma, Serum, Cell Culture, Urine, Cell/Tissue Lysates, Synovial Fluid, BAL, |
| Recommended Sample Dilution (Plasma/Serum) | No dilution for sample <ULOQ; sufficient dilution for samples >ULOQ |
| Sensitivity | 5 pg/mL |
| Detection Range | 25-1600 pg/mL |
| Specificity | Bovine IL-33 |
| Cross-Reactivity | < 0.5% cross-reactivity observed with available related molecules, < 50% cross-species reactivity observed with species tested. |
| Interference | No significant interference observed with available related molecules |
| Storage/Stability | 4 ºC for up to 6 months |
| Usage | For Laboratory Research Use Only. Not for diagnostic or therapeutic use. |
| Additional Notes | The kit allows for use in multiple experiments. |
Standard Curve
Kit Components
1. Pre-coated 96-well Microplate
2. Biotinylated Detection Antibody
3. Streptavidin-HRP Conjugate
4. Lyophilized Standards
5. TMB One-Step Substrate
6. Stop Solution
7. 20 x PBS
8. Assay Buffer
Other Materials Required but not Provided:
1. Microplate Reader capable of measuring absorption at 450 nm
2. Log-log graph paper or computer and software for ELISA data analysis
3. Precision pipettes (1-1000 µl)
4. Multi-channel pipettes (300 µl)
5. Distilled or deionized water
Protocol Outline
1. Prepare all reagents, samples and standards as instructed in the datasheet.
2. Add 100 µl of Standard or samples to each well and incubate 1 h at RT.
3. Add 100 µl of Working Detection Antibody to each well and incubate 1 h at RT.
4. Add 100 µl of Working Streptavidin-HRP to each well and incubate 20 min at RT.
5. Add 100 µl of Substrate to each well and incubate 5-30 min at RT.
6. Add 50 µl of Stop Solution to each well and read at 450 nm immediately.
Background:
IL-33 is a member of the IL-1 family that potently drives production of T helper-2 (Th2)-associated cytokines (e.g., IL-4). IL33 is a ligand for IL33R (IL1RL1), an IL-1 family receptor that is highly expressed on Th2 cells, mast cells and group 2 innate lymphocytes.[1] IL-33 is expressed on a wide variety of cell types, including fibroblasts, mast cells, dendritic cells, macrophages, osteoblasts, endothelial cells, and epithelial cells.[2] IL-33 is a ligand that binds to a high-affinity receptor family member ST2. IL-33 induces helper T cells, mast cells, eosinophils and basophils to produce type 2 cytokines. This cytokine was previously named NF-HEV ‘nuclear factor (NF) in high endothelial venules‘ (HEVs) since it was originally identified in these specialized cells.[3] IL-33 mediates its biological effects by interacting with the receptors ST2 (also known as IL1RL1) and IL-1 Receptor Accessory Protein (IL1RAP), activating intracellular molecules in the NF-κB and MAP kinase signaling pathways that drive production of type 2 cytokines (e.g. IL-5 and IL-13) from polarized Th2 cells. The induction of type 2 cytokines by IL-33 in vivo is believed to induce the severe pathological changes observed in mucosal organs following administration of IL-33.[4][5]
References
- Yagami A, et al. (2010). J. Immunol. 185 (10): 5743–50.
- Mirchandani A, et al. (2012). Trends in Immunology 33 (8): 389–396.
- Baekkevold ES, et al. (2003). Am. J. Pathol. 163 (1): 69–79.
- Schmitz J, et al. (2005). Immunity 23 (5): 479–90.
- Chackerian AA, et al. (2007). J. Immunol. 179 (4): 2551–5.
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