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Interleukin-18 (IL-18) is an 18 kDa cytokine produced by Kupffer cells, activated macrophages, keratinocytes, intestinal epithelial cells, osteoblasts, and adrenal cortex cells. IL-18 is involved in the production of interferon-γ (IFN-γ) in response to toxic shock and shares functional similarities with IL-12. IL-18 works together with IL-12 to induce cell-mediated immunity following infection with microbial products like lipopolysaccharides (LPS). IL-18 is also able to induce severe inflammatory reactions, which suggests a role in certain inflammatory disorders. Elevated plasma levels of IL-18 have been reported in hematological malignancies, inflammatory diseases, and autoimmune disorders.
AlphaLISA® technology allows the detection of molecules of interest in a no-wash, highly sensitive, quantitative assay. In an AlphaLISA assay, a biotinylated anti-analyte antibody binds to the Streptavidin-coated Donor beads while another anti-analyte antibody is conjugated to AlphaLISA Acceptor beads. In the presence of the analyte, the beads come into close proximity. The excitation of the Donor beads causes the release of singlet oxygen molecules that triggers a cascade of energy transfer in the Acceptor beads, resulting in a sharp peak of light emission at 615 nm.
| Assay Target | IL-18 |
|---|---|
| Assay Target Class | Cytokine |
| Assay Technology | Alpha |
| Product Brand Name | AlphaLISA |
| Shipping Condition | Blue Ice |
| Therapeutic Area | Inflammation |
| Unit Size | 500 Assay Points |
Alpha (Amplified Luminescent Proximity Homogeneous Assay) technology is a bead-based, no-wash alternative to traditional ELISAs. Instead of detection with an HRP substrate, the Alpha assay signal is generated by the excitation of an Eu+-coated bead that has been conjugated to the detection antibody.
Alpha technology offers a simple, straight forward workflow. No wash needed!
Download this application note to see how no-wash AlphaLISA® technology provides a more-convenient alternative to ELISA for quantitation of biomarkers in complex sample types, including tissue, serum, and plasma.
Product brochure for the Alpha Technology, a versatile, no wash, homogeneous assay technology that's suitable for a broad range of applications.
Find out about our range of integrated solutions for drug discovery screening in this e-brochure.
Our screening solutions for high-throughput screening, phenotypic screening and data analysis help to streamline drug discovery workflows in labs across the globe. Our portfolio includes automated liquid handling, assays and reagents, imaging and detection systems, and informatics.
Working independently or together, with our solutions you can achieve consistent and accurate results. By accelerating the identification and characterization of effective and safe drug candidates, the PerkinElmer portfolio enables you to optimize efficiency in your lab and deliver more actionable, real-world results.
Download the brochure to learn more about how we can partner with you so that you can discover smarter, more effective, data-driven breakthroughs in the critical screening stages of drug discovery and development.
Biomarker levels were measured directly in CulturPlates-96 and-384 in a simple, fast, all-in-one-well AlphaLISA assay format. The elimination of transfer and wash steps simplifies cellular assays, reduces variability and significantly reduces hands-on time and costs associated with consumables. Integral plasma membrane (EGFR) and secreted solubleproteins (TNFa, IL1ß, IL6, IL8) were successfully determined, on adherent or suspension cells, using the standard AlphaLISA Immunoassay buffer.
The AlphaLISA® assay is a homogeneous immunoassay alternative to classical ELISA. AlphaLISA assays were originally utilized to detect analytesin cell cultures upernatants or serum/plasma samples.
List Price : USD70.0
OptiPlate-384, White Opaque 384-well Microplate, Case 50
List Price : USD307.0
AlphaPlate-384, Light gray, untreated, Case of 50
List Price : USD567.0
