PerkinElmer
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IFN-γ (human) AlphaLISA Detection Kit, 500 Assay Points

The AlphaLISA Human IFN-γ Detection Kit is designed for the quantitative determination of human IFN-γ in serum, buffered solution or cell culture medium using a homogeneous (no wash steps, no separation steps) assay.

For research use only; not for diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption & disposal requirements under European REACH regulations (EC 1907/2006).

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AL217C
500 assay points
1905.00 USD
 
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AL217F
5,000 assay points
12600.00 USD
 
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Overview

Formats:

  • Our 500 assay point kit allows you to run 500 wells in 96-well or 384-well format, using a 50 µL reaction volume (5 µL of sample).
  • Our 5,000 assay point kit allows you to run 5,000 wells in 96-well or 384-well format, using a 50 µL reaction volume (5 µL of sample).

Features:

  • No-wash steps, no separation steps
  • ELISA alternative technology
  • Sensitive detection
  • Broad sample compatibility
  • Small sample volume
  • Results in less than 3 hours
  • Half the time of an ELISA assay

Interferons (IFNs) activity has been discovered due to their antiviral effects. In humans, there are three families of IFNs: IFN type I (IFN-α, ß, ω, ε, and κ), IFN type II (one single representative, IFN-γ), and IFN type III (IFN-λ1-3). Antigens and mitogens stimulate in Natural Killer (NK) and activated helper T lymphocytes (Th1) the production of IFN-γ. Human IFN-γ is a 140 amino acids polypeptide that shows multiple effects; it induces the production of cytokines, upregulates the expression of class I and II MHC antigens, and leukocyte adhesion molecules. It also activates macrophages, enhances the secretion of immunoglobulins by B cells, and potentiates Th1 cell expansion. Response to IFN-γ is mediated by the hetetodimeric IFN-γ Receptor, triggering a signalling cascade involving JAK1, JAK2, and STAT1. Importantly, IFNs have been proved to be effective in the treatment of several viral infections and cancers.

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.

Specifications

Assay Target IFNγ
Assay Target Class Cytokine
Automation Compatible Yes
Detection Method Alpha
Experimental Type In vitro
Product Brand Name AlphaLISA
Shipping Condition Blue Ice
Therapeutic Area Inflammation
Unit Size 500 assay points
Resources, Events & More
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Application Brief

Eight Limitations of ELISA and How to Overcome Them Using Alternative Technologies

The introduction of enzyme-linked immunosorbent assays (ELISAs) in the early 1970’s offered researchers a non-radiometric immunoassay platform without compromising sensitivity. Over the last 50 years scientists have made huge strides in disease research and drug discovery and a demand for greater assay throughput and sensitivity has evolved. In response, more robust immunoassays have been developed to address some of the limitations of the standard, colorimetric ELISA.

Find out about the most common limitations of traditional ELISAs and how different ELISA alternative technologies address these limitations.

PDF 1 MB

Application Note

AlphaLISA Automation - Use of the JANUS Automated Workstation to automate AlphaLISA assays

Immunoassays are a mainstay for the quantification of a variety of bio-molecular analytesin drug discovery, drug development, and life sciences research laboratories. While ELISAs have traditionally been the most popular form of immunoassay, they are limited by the need to perform multiple wash steps.

PDF 870 KB
Determination of Cytokines Present in a CAR-T Co-Culture Environment by AlphaLISA and HTRF Technologies

While fundamental knowledge about tumor immunology has exploded recently, a new therapeutic approach to cancer is taking off: immunotherapy. Instead of directly attacking tumor cells, the idea is to help the immune system recognize and destroy them.

The use of CAR-T cells (Chimeric Antigen Receptor-T Cells), a new avenue of immunotherapy, consists in genetically modifying the patient's immune cells to arm them against a tumor. Concretely, T lymphocytes are taken from the patient's blood and modified in vitro. This leads to their expression of specific surface receptors, which recognize a tumor antigen. Once modified, these CAR-T cells are multiplied and re-injected into the patient's body in large quantities. There they go on to destroy cancer cells after binding to the tumor antigen, releasing a mixture of cytokines and pro-inflammatory chemokines.

This application note focuses on detecting cytokine and chemokine secretion using two orthogonal no-wash immunoassays, AlphaLISA® and HTRF®, in an in vitro co-culture model with CAR-T cells and CD19 positive Raji cells targeting tumors.

PDF 1 MB

Brochure

Data Sheet

Poster

A Comparison of AlphaLISABead-Based Luminescence and Electrochemiluminescence Immunoassay Technologies for Detection of Human EPO, Amyloid Beta 42 and VEGF in Complex Sample Matrices

For the detection of three biomarkers in complex sample matrices, the AlphaLISA and Electrochemiluminescent (ECL) assay technologies were shown to have similar: Assay windows (linear dynamic range), Lower and upper detection limit, Intra-and inter-assay precision (lower % CV) The advantages of using AlphaLISA over ECL are: Shorter total assay duration No wash steps No shaking Lower sample volume requirement for equivalent performance Less expensive instrument and plates required

PDF 179 KB
All-In-One-Well AlphaLISA Assays for Direct Biomarker Quantification in Cell Cultures

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.

PDF 288 KB
AlphaLISA Assays are Homogeneous Sensitive Immunoassays for Detection of Analytesin a Variety of Biological Matrices

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.

PDF 273 KB